{"id":1645,"date":"2018-09-07T19:51:57","date_gmt":"2018-09-07T11:51:57","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=1645"},"modified":"2018-09-07T19:51:57","modified_gmt":"2018-09-07T11:51:57","slug":"%e5%9c%a8android%e4%b8%ad%e4%bd%bf%e7%94%a8protocol-buffers","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/1645","title":{"rendered":"\u5728Android\u4e2d\u4f7f\u7528Protocol Buffers"},"content":{"rendered":"
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\u5728Android\u4e2d\u4f7f\u7528Protocol Buffers<\/h1>\n
\"96\"<\/a><\/p>\n
hanpfei<\/a><\/span>\u00a0<\/i>\u5173\u6ce8<\/a><\/p>\n
2016.12.02 20:34*<\/span>\u00a0\u5b57\u6570 2242<\/span>\u00a0\u9605\u8bfb 12648<\/span>\u8bc4\u8bba 11<\/span>\u559c\u6b22 31<\/span><\/div>\n<\/div>\n<\/div>\n
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\u7f51\u7edc\u6027\u80fd\u4f18\u5316\u7684\u7ec8\u6781\u624b\u6cd5\u5c31\u662f\u4e0d\u901a\u8fc7\u7f51\u7edc\u4f20\u8f93\uff0c\u4f46\u8fd9\u5e38\u5e38\u662f\u4e0d\u53ef\u80fd\u7684\u3002\u4f46\u6211\u4eec\u8fd8\u662f\u53ef\u4ee5\u901a\u8fc7\u5bf9\u7f51\u7edc\u4f20\u8f93\u7684\u6570\u636e\u672c\u8eab\u505a\u4f18\u5316\uff0c\u6765\u83b7\u5f97\u66f4\u597d\u7684\u6027\u80fd\uff0c\u6027\u80fd\u5c31\u5e94\u8be5\u4ece\u6bcf\u4e00\u4e2a\u53ef\u80fd\u7684\u5730\u65b9\u69a8\u53d6\u3002\u8fd9\u91cc\u6765\u770b\u4e00\u4e0b\u00a0Protocol Buffers<\/strong>\u00a0\u3002<\/p>\n

Protocol Buffers<\/strong>\u00a0\u662f\u4e00\u4e2a\u5e8f\u5217\u5316\u7ed3\u6784\u6570\u636e\u7684\u7075\u6d3b\u3001\u9ad8\u6548\u4e14\u81ea\u52a8\u5316\u7684\u673a\u5236\u2014\u2014\u7c7b\u4f3c\u4e8eXML\uff0c\u4f46\u66f4\u5c0f<\/em><\/strong>\uff0c\u66f4\u5feb<\/em><\/strong>\uff0c\u66f4\u7b80\u5355<\/em><\/strong>\u3002\u5b9a\u4e49\u4e00\u6b21\u7ed3\u6784\u5316\u6570\u636e\u7684\u65b9\u5f0f\uff0c\u7136\u540e\u5c31\u53ef\u4ee5\u4f7f\u7528\u4e13\u95e8\u751f\u6210\u7684\u4ee3\u7801\u7b80\u5355\u5730\u5199\u5165\uff0c\u6216\u7528\u4e0d\u540c\u7684\u8bed\u8a00\u4ece\u5927\u91cf\u7684\u6570\u636e\u6d41\u8bfb\u51fa\u7ed3\u6784\u5316\u6570\u636e\u3002\u751a\u81f3\u53ef\u4ee5\u66f4\u65b0\u6570\u636e\u7ed3\u6784\u800c\u4e0d\u7834\u574f\u5df2\u90e8\u7f72\u7684\u57fa\u4e8e\u00a0\u8001<\/strong>\u00a0\u683c\u5f0f\u7f16\u8bd1\u7684\u7a0b\u5e8f\u3002\u6211\u4eec\u770b\u4e00\u4e0b\u8981\u5982\u4f55\u5c06\u00a0Protocol Buffers<\/strong>\u00a0\u7528\u5230\u6211\u4eec\u7684Android\u9879\u76ee\u4e2d\u3002<\/p>\n

\u603b\u89c8<\/h1>\n

\u5148\u6765\u770b\u4e00\u4e0b\u00a0Protocol Buffers<\/strong>\u00a0\u9879\u76ee\u5df2\u7ecf\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u4ec0\u4e48\uff0c\u6211\u4eec\u5728\u4f7f\u7528\u00a0Protocol Buffers<\/strong>\u00a0\u65f6\u9700\u8981\u505a\u4ec0\u4e48\u7684\u6574\u4f53\u6d41\u7a0b\u3002\u5982\u4e0b\u56fe\uff1a<\/p>\n

\n
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Protocol Buffers Architecture<\/div>\n<\/div>\n

\u5728\u4f7f\u7528\u00a0Protocol Buffers<\/strong>\u00a0\u65f6\uff0c\u6211\u4eec\u9700\u8981\u4ee5\u7279\u6b8a\u7684\u65b9\u5f0f\u5b9a\u4e49\u6211\u4eec\u7684\u7ed3\u6784\u5316\u6570\u636e\uff0c\u4fdd\u5b58\u4e3a .proto \u6d88\u606f\u5b9a\u4e49\u6587\u4ef6\u3002\u00a0Protocol Buffers<\/strong>\u00a0\u9879\u76ee\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u7f16\u8bd1\u5668\uff0c\u53ef\u4ee5\u5c06 .proto \u6587\u4ef6\u7f16\u8bd1\u4e3aJava\u6587\u4ef6\u4ee5\u7528\u4e8e\u6211\u4eec\u7684Java \u6216 Android\u5e94\u7528\u9879\u76ee\u3002\u8fd9\u4e2a\u7f16\u8bd1\u5668\u5728\u6211\u4eec\u7684PC\u673a\u4e0a\u7f16\u8bd1\u5e76\u8fd0\u884c\u3002\u4ea7\u751f\u7684Java\u6587\u4ef6\u662f\u4f9d\u8d56\u4e8e\u00a0Protocol Buffers<\/strong>\u00a0\u7684Java\u5e93\u7684\uff0c\u6bd4\u5982\u8fd9\u4e9b\u6587\u4ef6\u5b9e\u73b0\u4e86\u5e93\u7684\u501f\u53e3\u7b49\u3002\u6211\u4eec\u5c06\u751f\u6210\u7684\u8fd9\u4e9bJava\u6587\u4ef6\u548c\u00a0Protocol Buffers<\/strong>\u00a0\u7684Java\u5e93\u5f15\u5165\u6211\u4eec\u7684Android\u5e94\u7528\u9879\u76ee\uff0c\u5c31\u53ef\u4ee5\u65b9\u4fbf\u5730\u4ee5\u00a0Protocol Buffers<\/strong>\u00a0\u7684\u4e8c\u8fdb\u5236\u683c\u5f0f\u64cd\u4f5c\u7ed3\u6784\u5316\u6570\u636e\u4e86\u3002<\/p>\n

\u6bcf\u6b21\u624b\u52a8\u6267\u884c\u00a0Protocol Buffers<\/strong>\u00a0\u7f16\u8bd1\u5668\u5c06 .proto \u6587\u4ef6\u8f6c\u6362\u4e3aJava\u6587\u4ef6\u663e\u7136\u6709\u70b9\u592a\u9ebb\u70e6\u4e86\u3002\u00a0Protocol Buffers<\/strong>\u00a0\u9879\u76ee\u7684\u5f00\u53d1\u8005\u663e\u7136\u4e5f\u60f3\u5230\u4e86\u8fd9\u4e00\u70b9\uff0c\u56e0\u800c\u4ed6\u4eec\u8fd8\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u4e00\u4e2aAndroid Studio gradle\u63d2\u4ef6\u00a0protobuf-gradle-plugin<\/strong>\u00a0\uff0c\u4ee5\u4fbf\u4e8e\u5728\u6211\u4eec\u9879\u76ee\u7684\u7f16\u8bd1\u671f\u95f4\u81ea\u52a8\u5730\u6267\u884c\u00a0Protocol Buffers<\/strong>\u00a0\u7f16\u8bd1\u5668\u3002<\/p>\n

\u6211\u4eec\u53ef\u4ee5\u4e3a\u00a0protobuf-gradle-plugin<\/strong>\u00a0\u6307\u5b9a\u672c\u5730\u00a0Protocol Buffers<\/strong>\u00a0\u7f16\u8bd1\u5668\u7684\u8def\u5f84\u8ba9\u5b83\u4f7f\u7528\u672c\u5730\u7684\u7f16\u8bd1\u6267\u884c\u7f16\u8bd1\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u00a0Protocol Buffers<\/strong>\u00a0\u9879\u76ee\u63d0\u4f9b\u7684\u53e6\u5916\u4e00\u4e2a\u5de5\u5177\uff0c\u5728\u7f16\u8bd1\u65f6\u52a8\u6001\u5730\u4e0b\u8f7d\u5e76\u6267\u884c\u7f16\u8bd1\u8fc7\u7a0b\u3002<\/p>\n

\u540e\u9762\u6211\u4eec\u8be6\u7ec6\u5730\u6765\u770b\u8fd9\u4e2a\u8fc7\u7a0b\u3002<\/p>\n

\u4e0b\u8f7d\u7f16\u8bd1Protocol\u7f16\u8bd1\u5668<\/h1>\n

\u6211\u4eec\u53ef\u4ee5\u5728\u5982\u4e0b\u4f4d\u7f6e\uff1a<\/p>\n

https:<\/span>\/\/github.com\/google<\/span>\/protobuf\/releases<\/span>\r\n<\/code><\/pre>\n
\u4e0b\u8f7d\u6253\u5305\u597d\u7684protobuf\uff0c\u4e5f\u53ef\u4ee5\u76f4\u63a5clone protobuf\u7684\u4ee3\u7801\uff0c\u81ea\u5df1\u624b\u52a8\u7f16\u8bd1\u7f16\u8bd1\u5668\u3002\u8fd9\u91cc\u6211\u4eec\u4eceGitHub\u4e0aclone\u4ee3\u7801\u5e76\u624b\u52a8\u7f16\u8bd1\u7f16\u8bd1\u5668\uff1a<\/p>\n
$ git clone<\/span> https:\/\/github.com\/google\/protobuf.git\r\n\u6b63\u514b\u9686\u5230 'protobuf'<\/span>...\r\nremote: Counting objects: 38993, done<\/span>.\r\nremote: Compressing objects: 100% (17\/17), done<\/span>.\r\nremote: Total 38993 (delta 4), reused 0 (delta 0), pack-reused 38974\r\n\u63a5\u6536\u5bf9\u8c61\u4e2d: 100% (38993\/38993), 36.14 MiB | 239.00 KiB\/s, \u5b8c\u6210.\r\n\u5904\u7406 delta \u4e2d: 100% (26220\/26220), \u5b8c\u6210.\r\n\u68c0\u67e5\u8fde\u63a5... \u5b8c\u6210\u3002\r\n<\/code><\/pre>\n
\u4e0b\u8f7d\u4ee3\u7801\u4e4b\u540e\uff0c\u8fdb\u5165protobuf\u76ee\u5f55\u5e76\u6267\u884c\u00a0autogen.sh<\/strong>\u00a0\uff1a<\/p>\n
$ cd protobuf\r\n$ .\/autogen.sh \r\nGoogle Mock not<\/span> present.  Fetching gmock-1.7<\/span>.0<\/span> from the web...\r\n  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current\r\n                                 Dload  Upload   Total   Spent    Left  Speed\r\n100<\/span>   129<\/span>    0<\/span>   129<\/span>    0<\/span>     0<\/span>    111<\/span>      0<\/span> --:--<\/span>:--<\/span>  0<\/span>:<\/span>00<\/span>:<\/span>01<\/span> --:--<\/span>:--<\/span>   112<\/span>\r\n100<\/span>  362<\/span>k  100<\/span>  362<\/span>k    0<\/span>     0<\/span>  67764<\/span>      0<\/span>  0<\/span>:<\/span>00<\/span>:<\/span>05<\/span>  0<\/span>:<\/span>00<\/span>:<\/span>05<\/span> --:--<\/span>:--<\/span> 92816<\/span>\r\n  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current\r\n                                 Dload  Upload   Total   Spent    Left  Speed\r\n100<\/span>   129<\/span>    0<\/span>   129<\/span>    0<\/span>     0<\/span>    112<\/span>      0<\/span> --:--<\/span>:--<\/span>  0<\/span>:<\/span>00<\/span>:<\/span>01<\/span> --:--<\/span>:--<\/span>   112<\/span>\r\n100<\/span>  618<\/span>k  100<\/span>  618<\/span>k    0<\/span>     0<\/span>  56321<\/span>      0<\/span>  0<\/span>:<\/span>00<\/span>:<\/span>11<\/span>  0<\/span>:<\/span>00<\/span>:<\/span>11<\/span> --:--<\/span>:--<\/span>  115<\/span>k\r\n+ autoreconf -f -i -Wall,no-obsolete\r\nlibtoolize:<\/span> putting auxiliary files in<\/span> AC_CONFIG_AUX_DIR, 'build-aux'<\/span>.\r\n......\r\n<\/code><\/pre>\n
\u8fd9\u4e2a\u811a\u672c\u4e3b\u8981\u7528\u4e8e\u4e0b\u8f7d\u6d4b\u8bd5\u7528\u7684gmock-1.7.0\uff0c\u5e76\u751f\u6210\u7528\u4e8e\u7f16\u8bd1\u914d\u7f6e\u7684\u00a0configure<\/strong>\u00a0\u7b49\u6587\u4ef6\u3002\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u4e86\u89e3\u6211\u4eec\u53ef\u4ee5\u5bf9protobuf\u7684\u7f16\u8bd1\u505a\u54ea\u4e9b\u914d\u7f6e\uff0c\u4ee5\u53ca\u9ed8\u8ba4\u914d\u7f6e\u7684\u4fe1\u606f\uff1a<\/p>\n
$ .\/configure --help<\/span>\r\n`configure' configures Protocol Buffers 3.1.0 to adapt to many kinds of systems.\r\n\r\nUsage: .\/configure [OPTION]... [VAR=VALUE]...\r\n\r\nTo assign environment variables (e.g., CC, CFLAGS...), specify them as\r\nVAR=VALUE.  See below for descriptions of some of the useful variables.\r\n\r\nDefaults for the options are specified in brackets.\r\n\r\nConfiguration:\r\n  -h, --help              display this help and exit\r\n      --help=short        display options specific to this package\r\n      --help=recursive    display the short help of all the included packages\r\n  -V, --version           display version information and exit\r\n  -q, --quiet, --silent   do not print `checking ...'<\/span> messages\r\n      --cache-file=FILE   cache test<\/span> results in<\/span> FILE [disabled]\r\n  -C, --config-cache      alias<\/span> for<\/span> `--cache-file=config.cache'\r\n  -n, --no-create         do not create output files\r\n      --srcdir=DIR        find the sources in DIR [configure dir or `..'<\/span>]\r\n\r\nInstallation directories:\r\n  --prefix=PREFIX         install architecture-independent files in<\/span> PREFIX\r\n                          [\/usr\/local<\/span>]\r\n  --exec<\/span>-prefix=EPREFIX   install architecture-dependent files in<\/span> EPREFIX\r\n                          [PREFIX]\r\n\r\nBy default, `make install' will install all the files in\r\n`\/usr\/local\/bin'<\/span>, `\/usr\/local<\/span>\/lib' etc.  You can specify\r\nan installation prefix other than `\/usr\/local'<\/span> using `--prefix',\r\nfor instance `--prefix=$HOME'<\/span>.\r\n\r\nFor better control, use the options below.\r\n\r\nFine tuning of the installation directories:\r\n  --bindir=DIR            user executables [EPREFIX\/bin]\r\n......\r\n<\/code><\/pre>\n
\u6267\u884cconfigure\u5bf9\u7f16\u8bd1\u8fdb\u884c\u914d\u7f6e\uff1a<\/p>\n
$ .\/configure \r\nchecking whether to enable<\/span> maintainer-specific portions of Makefiles... yes\r\nchecking build system type<\/span>... x86_64-pc-linux-gnu\r\nchecking host system type<\/span>... x86_64-pc-linux-gnu\r\nchecking target system type<\/span>... x86_64-pc-linux-gnu\r\nchecking for<\/span> a BSD-compatible install... \/usr\/bin\/install -c\r\nchecking whether build environment is sane... yes\r\nchecking for<\/span> a thread-safe mkdir -p... \/bin\/mkdir -p\r\n......\r\n<\/code><\/pre>\n
\u8fd9\u6837\u5c31\u751f\u6210\u4e86makefile\u6587\u4ef6\uff0c\u7f16\u8bd1\u5e76\u5b89\u88c5\uff1a<\/p>\n
$ make\r\n$ sudo make install\r\n<\/code><\/pre>\n
\u8fd9\u4e2a\u8fc7\u7a0b\u5728\u7f16\u8bd1\u5e76\u5b89\u88c5\u00a0Protocol Buffers<\/strong>\u00a0\u7f16\u8bd1\u5668\u4e4b\u5916\uff0c\u8fd8\u4f1a\u4e3ahost\u7f16\u8bd1\u7528\u4e8e\u652f\u6301\u5728C++\u4e2d\u4f7f\u7528\u00a0Protocol Buffers<\/strong>\u00a0\u7684\u5e93\u3002\uff08\u7f16\u8bd1\u751f\u6210\u7684\u4e8c\u8fdb\u5236\u6587\u52a0\u5728\u00a0protobuf\/src\/.libs<\/strong>\u4e0b\u3002\uff09<\/p>\n
\u5b89\u88c5\u4e4b\u540e\u6267\u884c\u5982\u4e0b\u547d\u4ee4\u4ee5\u786e\u8ba4\u5df2\u7ecf\u88c5\u597d\uff1a<\/p>\n
$ protoc --version\r\nlibprotoc 3.1<\/span>.0<\/span>\r\n<\/code><\/pre>\n
\u5728\u6267\u884cprotoc\u65f6\u901a\u8fc7\u7ed9\u5b83\u52a0\u4e0a\u00a0–help<\/strong>\u00a0\u53c2\u6570\u53ef\u4ee5\u4e86\u89e3\u5230\u8fd9\u4e2a\u5de5\u5177\u66f4\u591a\u7684\u7528\u6cd5\u3002<\/p>\n
$ protoc --help\r\nUsage:<\/span> protoc [OPTION] PROTO_FILES\r\nParse PROTO_FILES and<\/span> generate output based on the options given:<\/span>\r\n  -IPATH, --proto_path=PATH   Specify the directory in<\/span> which to search for<\/span>\r\n                              imports.  May be specified multiple times;\r\n                              directories will be searched in<\/span> order.  If not<\/span>\r\n                              given, the current working directory is used.\r\n  --version                   Show version info and<\/span> exit.\r\n  -h, --help                  Show this text and<\/span> exit.\r\n  --encode=MESSAGE_TYPE       Read a text-format message of the given type\r\n                              from standard input and<\/span> write it in<\/span> binary\r\n                              to standard output.  The message type must\r\n                              be defined<\/span> in<\/span> PROTO_FILES or<\/span> their imports.\r\n  --decode=MESSAGE_TYPE       Read a binary message of the given type from\r\n                              standard input and<\/span> write it in<\/span> text format\r\n                              to standard output.  The message type must\r\n                              be defined<\/span> in<\/span> PROTO_FILES or<\/span> their imports.\r\n  --decode_raw                Read an arbitrary protocol message from\r\n                              standard input and<\/span> write the raw tag\/value\r\n                              pairs in<\/span> text format to standard output.  No\r\n                              PROTO_FILES should be given when<\/span> using this\r\n                              flag.\r\n  -oFILE,                     Writes a FileDescriptorSet (a protocol buffer,\r\n    --descriptor_set_out=FILE defined<\/span> in<\/span> descriptor.proto) containing all of\r\n                              the input files to FILE.\r\n  --include_imports           When using --descriptor_set_out, also include<\/span>\r\n                              all dependencies of the input files in<\/span> the\r\n                              set, so that the set is self<\/span>-contained.\r\n  --include_source_info       When using --descriptor_set_out, do<\/span> not<\/span> strip\r\n                              SourceCodeInfo from the FileDescriptorProto.\r\n                              This results in<\/span> vastly larger descriptors that\r\n                              include<\/span> information about the original\r\n                              location of each decl in<\/span> the source file as\r\n                              well as surrounding comments.\r\n  --dependency_out=FILE       Write a dependency output file in<\/span> the format\r\n                              expected by make. This writes the transitive\r\n                              set of input file paths to FILE\r\n  --error_format=FORMAT       Set the format in<\/span> which to print errors.\r\n                              FORMAT may be 'gcc'<\/span> (the default) or<\/span> 'msvs'<\/span>\r\n                              (Microsoft Visual Studio format).\r\n  --print_free_field_numbers  Print the free field numbers of the messages\r\n                              defined<\/span> in<\/span> the given proto files. Groups share\r\n                              the same field number space with the parent \r\n                              message. Extension ranges are counted as \r\n                              occupied fields numbers.\r\n\r\n  --plugin=EXECUTABLE         Specifies a plugin executable to use.\r\n                              Normally, protoc searches the PATH for<\/span>\r\n                              plugins, but you may specify additional\r\n                              executables not<\/span> in<\/span> the path using this flag.\r\n                              Additionally, EXECUTABLE may be of the form\r\n                              NAME=PATH, in<\/span> which case<\/span> the given plugin name\r\n                              is mapped to the given executable even if<\/span>\r\n                              the executable's own name differs.\r\n  --cpp_out=OUT_DIR           Generate C++ header and source.\r\n  --csharp_out=OUT_DIR        Generate C# source file.\r\n  --java_out=OUT_DIR          Generate Java source file.\r\n  --javanano_out=OUT_DIR      Generate Java Nano source file.\r\n  --js_out=OUT_DIR            Generate JavaScript source.\r\n  --objc_out=OUT_DIR          Generate Objective C header and source.\r\n  --php_out=OUT_DIR           Generate PHP source file.\r\n  --python_out=OUT_DIR        Generate Python source file.\r\n  --ruby_out=OUT_DIR          Generate Ruby source file.\r\n<\/span><\/code><\/pre>\n
\u521b\u5efa .proto \u6587\u4ef6<\/h1>\n
.proto \u6587\u4ef6\u4e2d\u7684\u5b9a\u4e49\u5f88\u7b80\u5355\uff1a\u4e3a\u6bcf\u4e2a\u60f3\u8981\u5e8f\u5217\u5316\u7684\u6570\u636e\u7ed3\u6784\u6dfb\u52a0\u4e00\u4e2a\u00a0\u6d88\u606f(message)<\/em>\u00a0\uff0c\u7136\u540e\u4e3a\u6d88\u606f\u4e2d\u7684\u6bcf\u4e2a\u5b57\u6bb5\u6307\u5b9a\u4e00\u4e2a\u540d\u5b57\u548c\u7c7b\u578b\u4ee5\u53ca\u4e00\u4e2atag\u6570\u5b57\u3002\u5982\u5b98\u65b9\u63d0\u4f9b\u7684\u4e00\u4e2a\u4f8b\u5b50addressbook.proto\uff1a<\/p>\n
package tutorial;\r\n\r\noption java_package = \"com.example.tutorial\"<\/span>;\r\noption java_outer_classname = \"AddressBookProtos\"<\/span>;\r\n\r\nmessage Person {\r\n  required string<\/span> name = 1<\/span>;\r\n  required int32 id = 2<\/span>;\r\n  optional string<\/span> email = 3<\/span>;\r\n\r\n  enum<\/span> PhoneType {\r\n    MOBILE = 0<\/span>;\r\n    HOME = 1<\/span>;\r\n    WORK = 2<\/span>;\r\n  }\r\n\r\n  message PhoneNumber {\r\n    required string<\/span> number = 1<\/span>;\r\n    optional PhoneType type = 2<\/span> [default<\/span> = HOME];\r\n  }\r\n\r\n  repeated PhoneNumber phone = 4<\/span>;\r\n}\r\n\r\nmessage AddressBook {\r\n  repeated Person person = 1<\/span>;\r\n}\r\n<\/code><\/pre>\n
\u53ef\u4ee5\u53c2\u8003\u00a0\u5728Java\u4e2d\u4f7f\u7528Protocol Buffers<\/a>\u00a0\u4e00\u6587\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u521b\u5efa .proto \u6587\u4ef6\u7684\u57fa\u7840\u77e5\u8bc6\u3002<\/p>\n
\u7f16\u8bd1 .proto \u6587\u4ef6<\/h1>\n
\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u7f16\u8bd1 .proto \u6587\u4ef6\uff1a<\/p>\n
protoc -I=$SRC_DIR<\/span> --java_out=$DST_DIR<\/span> $SRC_DIR<\/span>\/addressbook.proto\r\n<\/code><\/pre>\n
-I\uff0c–java_out \u5206\u522b\u7528\u4e8e\u6307\u5b9a\u6e90\u76ee\u5f55 (\u653e\u7f6e\u5e94\u7528\u7a0b\u5e8f\u6e90\u4ee3\u7801\u7684\u5730\u65b9 \u2014\u2014 \u5982\u679c\u6ca1\u6709\u63d0\u4f9b\u5219\u4f7f\u7528\u5f53\u524d\u76ee\u5f55)\uff0c\u76ee\u7684\u76ee\u5f55 (\u5e0c\u671b\u653e\u7f6e\u751f\u6210\u7684\u4ee3\u7801\u7684\u4f4d\u7f6e\uff1b\u901a\u5e38\u4e0e$SRC_DIR\u76f8\u540c)\uff0c\u6700\u540e\u7684\u53c2\u6570\u4e3a .proto \u6587\u4ef6\u7684\u8def\u5f84\u3002protoc\u4f1a\u6309\u7167\u6807\u51c6Java\u98ce\u683c\uff0c\u751f\u6210Java\u7c7b\u53ca\u76ee\u5f55\u7ed3\u6784\u3002\u5982\u5bf9\u4e8e\u4e0a\u9762\u7684\u4f8b\u5b50\uff0c\u4f1a\u751f\u6210\u00a0com\/example\/tutorial\/<\/strong>\u00a0\u76ee\u5f55\u7ed3\u6784\uff0c\u53ca\u00a0AddressBookProtos.java<\/strong>\u00a0\u6587\u4ef6\u3002<\/p>\n
\u5728Android\u9879\u76ee\u4e2d\u4f7f\u7528 Protocol Buffers<\/h1>\n
\u6211\u4eec\u5c06 \u7531 .proto \u6587\u4ef6\u751f\u6210\u7684Java\u6587\u4ef6\u590d\u5236\u5230\u6211\u4eec\u7684Android\u9879\u76ee\u4e2d\uff1a<\/p>\n
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\n
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<\/div>\n<\/div>\n<\/div>\n
\u5728\u6211\u4eecapp\u7684build.gradle\u4e2d\u6dfb\u52a0\u5bf9\u00a0protobuf-java<\/strong>\u00a0\u7684\u4f9d\u8d56\uff0c\u5c31\u50cf\u4f9d\u8d56\u5176\u5b83\u90a3\u4e9bJava\u5e93\u4e00\u6837\uff1a<\/p>\n
dependencies {\r\n    compile fileTree(dir: 'libs'<\/span>, include<\/span>: ['*.jar'<\/span>])\r\n    testCompile 'junit:junit:4.12'<\/span>\r\n\r\n    compile 'com.android.support:appcompat-v7:23.4.0'<\/span>\r\n    compile 'com.google.protobuf:protobuf-java:3.0.0'<\/span>\r\n}\r\n<\/code><\/pre>\n
\u6dfb\u52a0\u8bbf\u95eeProtocol Buffers\u7684\u7c7b\u7684\u7c7b\u3002\u8fd9\u91cc\u6211\u4eec\u6dfb\u52a0\u4e24\u4e2a\u7c7b\uff0cAddPerson\u7528\u4e8e\u6784\u9020Person\u5bf9\u8c61\uff1a<\/p>\n
package<\/span> com.netease.volleydemo;\r\n\r\nimport<\/span> com.example.tutorial.AddressBookProtos.Person;\r\n\r\npublic<\/span> class<\/span> AddPerson<\/span> <\/span>{\r\n    static<\/span> Person createPerson<\/span>(String personName)<\/span> <\/span>{\r\n        Person.Builder person = Person.newBuilder();\r\n\r\n        int<\/span> id = 13958235<\/span>;\r\n        person.setId(id);\r\n\r\n        String name = personName;\r\n        person.setName(name);\r\n\r\n        String email = \"zhangsan@gmail.com\"<\/span>;\r\n        person.setEmail(email);\r\n\r\n        Person.PhoneNumber.Builder phoneNumber = Person.PhoneNumber.newBuilder();\r\n        phoneNumber.setType(Person.PhoneType.HOME);\r\n        phoneNumber.setNumber(\"0157-23443276\"<\/span>);\r\n\r\n        person.addPhone(phoneNumber.build());\r\n\r\n        phoneNumber = Person.PhoneNumber.newBuilder();\r\n        phoneNumber.setType(Person.PhoneType.MOBILE);\r\n        phoneNumber.setNumber(\"136183667387\"<\/span>);\r\n\r\n        person.addPhone(phoneNumber.build());\r\n\r\n        return<\/span> person.build();\r\n    }\r\n}\r\n<\/code><\/pre>\n
AddressBookProtobuf\u7c7b\u5219\u7528\u4e8e\u7f16\u7801\/\u89e3\u7801AddressBook\u5bf9\u8c61\uff1a<\/p>\n
package<\/span> com.netease.volleydemo;\r\n\r\nimport<\/span> com.example.tutorial.AddressBookProtos;\r\n\r\nimport<\/span> java.io.ByteArrayOutputStream;\r\nimport<\/span> java.io.IOException;\r\nimport<\/span> java.io.InputStream;\r\n\r\npublic<\/span> class<\/span> AddressBookProtobuf<\/span> <\/span>{\r\n    public<\/span> static<\/span> byte<\/span>[] encodeTest(String[] names) {\r\n\r\n        AddressBookProtos.AddressBook.Builder addressBook = AddressBookProtos.AddressBook.newBuilder();\r\n\r\n        for<\/span>(int<\/span> i = 0<\/span>; i < names.length; ++ i) {\r\n            addressBook.addPerson(AddPerson.createPerson(names[i]));\r\n        }\r\n        AddressBookProtos.AddressBook book = addressBook.build();\r\n        ByteArrayOutputStream baos = new<\/span> ByteArrayOutputStream();\r\n        try<\/span> {\r\n            book.writeTo(baos);\r\n        } catch<\/span> (IOException e) {\r\n        }\r\n\r\n        return<\/span> baos.toByteArray();\r\n    }\r\n\r\n\r\n    public<\/span> static<\/span> byte<\/span>[] encodeTest(String[] names, int<\/span> times) {\r\n        for<\/span> (int<\/span> i = 0<\/span>; i < times - 1<\/span>; ++ i) {\r\n            encodeTest(names);\r\n        }\r\n        return<\/span> encodeTest(names);\r\n    }\r\n\r\n    public<\/span> static<\/span> AddressBookProtos.AddressBook decodeTest<\/span>(InputStream is)<\/span> <\/span>{\r\n        AddressBookProtos.AddressBook addressBook = null<\/span>;\r\n        try<\/span> {\r\n            addressBook = AddressBookProtos.AddressBook.parseFrom(is);\r\n        } catch<\/span> (IOException e) {\r\n            e.printStackTrace();\r\n        }\r\n        return<\/span> addressBook;\r\n    }\r\n\r\n    public<\/span> static<\/span> AddressBookProtos.AddressBook decodeTest<\/span>(InputStream is, int<\/span> times)<\/span> <\/span>{\r\n        AddressBookProtos.AddressBook addressBook = null<\/span>;\r\n        for<\/span> (int<\/span> i = 0<\/span>; i < times; ++ i) {\r\n            addressBook = decodeTest(is);\r\n        }\r\n        return<\/span> addressBook;\r\n    }\r\n}\r\n<\/code><\/pre>\n
\u4f7f\u7528protobuf-gradle-plugin<\/h1>\n
\u6bcf\u6b21\u5355\u72ec\u6267\u884cprotoc\u7f16\u8bd1 .proto \u6587\u4ef6\u603b\u662f\u592a\u9ebb\u70e6\uff0c\u901a\u8fc7protobuf-gradle-plugin\u53ef\u4ee5\u5728\u7f16\u8bd1\u6211\u4eec\u7684app\u65f6\u81ea\u52a8\u5730\u7f16\u8bd1 .proto \u6587\u4ef6\uff0c\u8fd9\u6837\u5c31\u5927\u5927\u964d\u4f4e\u4e86\u6211\u4eec\u5728Android\u9879\u76ee\u4e2d\u4f7f\u7528\u00a0Protocol Buffers<\/strong>\u00a0\u7684\u96be\u5ea6\u3002<\/p>\n
\u9996\u5148\u6211\u4eec\u9700\u8981\u5c06 .proto \u6587\u4ef6\u6dfb\u52a0\u8fdb\u6211\u4eec\u7684\u9879\u76ee\u4e2d\uff0c\u5982\uff1a<\/p>\n
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<\/div>\n
<\/div>\n<\/div>\n<\/div>\n
\u7136\u540e\u4fee\u6539\u00a0app\/build.gradle<\/strong>\u00a0\u5bf9protobuf gradle\u63d2\u4ef6\u505a\u914d\u7f6e\uff1a<\/p>\n
    \n
  1. \u4e3abuildscript\u6dfb\u52a0\u5bf9protobuf-gradle-plugin<\/code>\u7684\u4f9d\u8d56\uff1a<\/li>\n<\/ol>\n
    buildscript {\r\n    repositories {\r\n        jcenter()\r\n        mavenCentral()\r\n    }\r\n    dependencies {\r\n        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.0'<\/span>\r\n    }\r\n}\r\n<\/code><\/pre>\n
      \n
    1. \u5728apply plugin: 'com.android.application'<\/code>\u540e\u9762\u5e94\u7528protobuf\u7684plugin\uff1a<\/li>\n<\/ol>\n
      apply plugin: 'com.android.application'<\/span>\r\napply plugin: 'com.google.protobuf'<\/span>\r\n<\/code><\/pre>\n
        \n
      1. \u6dfb\u52a0protobuf\u5757\uff0c\u5bf9protobuf-gradle-plugin\u7684\u6267\u884c\u505a\u914d\u7f6e\uff1a<\/li>\n<\/ol>\n
        protobuf {\r\n    protoc {\r\n        path = '\/usr\/local\/bin\/protoc'<\/span>\r\n    }\r\n\r\n    generateProtoTasks {\r\n        all().each { task ->\r\n            task.builtins {\r\n                remove java\r\n            }\r\n            task.builtins {\r\n                java { }\r\n                \/\/ Add cpp output without any option.<\/span>\r\n                \/\/ DO NOT omit the braces if you want this builtin to be added.<\/span>\r\n                cpp { }\r\n            }\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n
        protoc<\/code>\u5757\u7528\u4e8e\u914d\u7f6eProtocol Buffers\u7f16\u8bd1\u5668\uff0c\u8fd9\u91cc\u6211\u4eec\u6307\u5b9a\u7528\u6211\u4eec\u4e4b\u524d\u624b\u52a8\u7f16\u8bd1\u7684\u7f16\u8bd1\u5668\u3002
        \ntask.builtins<\/code>\u7684\u5757\u5fc5\u4e0d\u53ef\u5c11\uff0c\u8fd9\u4e2a\u5757\u7528\u4e8e\u6307\u5b9a\u6211\u4eec\u8981\u4e3a\u90a3\u4e9b\u7f16\u7a0b\u8bed\u8a00\u751f\u6210\u4ee3\u7801\uff0c\u8fd9\u91cc\u6211\u4eec\u4e3aC++\u548cJava\u751f\u6210\u4ee3\u7801\u3002\u7f3a\u5c11\u8fd9\u4e2a\u5757\u7684\u8bdd\uff0c\u5728\u7f16\u8bd1\u65f6\u4f1a\u62a5\u51fa\u5982\u4e0b\u7684\u9519\u8bef\uff1a<\/p>\n
        Information:<\/span>Gradle tasks [:app<\/span>:generateDebugSources<\/span>, :app<\/span>:mockableAndroidJar<\/span>, :app<\/span>:prepareDebugUnitTestDependencies<\/span>, :app<\/span>:generateDebugAndroidTestSources<\/span>, :netlib<\/span>:generateDebugSources<\/span>, :netlib<\/span>:mockableAndroidJar<\/span>, :netlib<\/span>:prepareDebugUnitTestDependencies<\/span>, :netlib<\/span>:generateDebugAndroidTestSources<\/span>]\r\nError:<\/span>Execution failed for<\/span> task ':app:generateDebugProto'<\/span>.\r\n> protoc:<\/span> stdout:<\/span> . stderr:<\/span> \/media\/data\/CorpProjects\/netlibdemo\/app\/build\/extracted-protos\/main:<\/span> warning:<\/span> directory does not<\/span> exist.\r\n  \/media\/data\/CorpProjects\/netlibdemo\/app\/src\/debug\/proto:<\/span> warning:<\/span> directory does not<\/span> exist.\r\n  \/media\/data\/CorpProjects\/netlibdemo\/app\/build\/extracted-protos\/debug:<\/span> warning:<\/span> directory does not<\/span> exist.\r\n  \/media\/data\/CorpProjects\/netlibdemo\/app\/build\/extracted-include<\/span>-protos\/debug:<\/span> warning:<\/span> directory does not<\/span> exist.\r\n  \/media\/data\/CorpProjects\/netlibdemo\/app\/src\/debug\/proto:<\/span> warning:<\/span> directory does not<\/span> exist.\r\n  \/media\/data\/CorpProjects\/netlibdemo\/app\/build\/extracted-protos\/debug:<\/span> warning:<\/span> directory does not<\/span> exist.\r\n  \/media\/data\/CorpProjects\/netlibdemo\/app\/build\/extracted-include<\/span>-protos\/debug:<\/span> warning:<\/span> directory does not<\/span> exist.\r\n  Missing output directives.\r\n<\/code><\/pre>\n
        \u63d0\u793a\u8bf4\u6ca1\u6709\u6307\u5b9a\u8f93\u51fa\u76ee\u5f55\u7684\u8def\u5f84\u3002
        \n\u8fd9\u662f\u7531\u4e8e protobuf-gradle-plugin \u6267\u884c\u7684protobuf\u7f16\u8bd1\u5668\u547d\u4ee4\u7684\u53c2\u6570\u662f\u5728protobuf-gradle-plugin\/src\/main\/groovy\/com\/google\/protobuf\/gradle\/GenerateProtoTask.groovy<\/code>\u4e2d\u6784\u9020\u7684\uff1a<\/p>\n
            def cmd = [ tools.protoc.path ]\r\n    cmd.addAll(dirs)\r\n\r\n    \/\/ Handle code generation built-ins<\/span>\r\n    builtins.each { builtin ->\r\n      String outPrefix = makeOptionsPrefix(builtin.options)\r\n      cmd += \"--${builtin.name}_out=${outPrefix}${getOutputDir(builtin)}\"<\/span>\r\n    }\r\n\r\n    \/\/ Handle code generation plugins<\/span>\r\n    plugins.each { plugin ->\r\n      String name = plugin.name\r\n      ExecutableLocator locator = tools.plugins.findByName(name)\r\n      if<\/span> (locator == null) {\r\n        throw<\/span> new<\/span> GradleException(\"Codegen plugin ${name} not defined\"<\/span>)\r\n      }\r\n      String pluginOutPrefix = makeOptionsPrefix(plugin.options)\r\n      cmd += \"--${name}_out=${pluginOutPrefix}${getOutputDir(plugin)}\"<\/span>\r\n      cmd += \"--plugin=protoc-gen-${name}=${locator.path}\"<\/span>\r\n    }\r\n\r\n    if<\/span> (generateDescriptorSet) {\r\n      def path = getDescriptorPath()\r\n      \/\/ Ensure that the folder for the descriptor exists;<\/span>\r\n      \/\/ the user may have set it to point outside an existing tree<\/span>\r\n      def folder = new<\/span> File(path).parentFile\r\n      if<\/span> (!folder.exists()) {\r\n        folder.mkdirs()\r\n      }\r\n      cmd += \"--descriptor_set_out=${path}\"<\/span>\r\n      if<\/span> (descriptorSetOptions.includeImports) {\r\n        cmd += \"--include_imports\"<\/span>\r\n      }\r\n      if<\/span> (descriptorSetOptions.includeSourceInfo) {\r\n        cmd += \"--include_source_info\"<\/span>\r\n      }\r\n    }\r\n\r\n    cmd.addAll protoFiles\r\n    logger.log<\/span>(LogLevel.INFO, cmd.toString())\r\n    def stdout<\/span> = new<\/span> StringBuffer()\r\n    def stderr<\/span> = new<\/span> StringBuffer()\r\n    Process result = cmd.execute()\r\n    result.waitForProcessOutput(stdout<\/span>, stderr<\/span>)\r\n    def output = \"protoc: stdout: ${stdout}. stderr: ${stderr}\"<\/span>\r\n    logger.log<\/span>(LogLevel.INFO, cmd)\r\n    if<\/span> (result.exitValue() == 0<\/span>) {\r\n      logger.log<\/span>(LogLevel.INFO, output)\r\n    } else<\/span> {\r\n      throw<\/span> new<\/span> GradleException(output)\r\n    }\r\n<\/code><\/pre>\n
        \u53ef\u4ee5\u770b\u5230\uff0c\u8f93\u51fa\u76ee\u5f55\u662f\u7531builtins\u6784\u9020\u7684\u3002<\/p>\n
          \n
        1. \u6307\u5b9a .proto \u6587\u4ef6\u7684\u8def\u5f84<\/li>\n<\/ol>\n
              sourceSets {\r\n        main {\r\n            java {\r\n                srcDir 'src\/main\/java'<\/span>\r\n            }\r\n            proto {\r\n                srcDir 'src\/main\/proto'<\/span>\r\n            }\r\n        }\r\n    }\r\n<\/code><\/pre>\n
          \u8fd9\u6837\u6211\u4eec\u5c31\u4e0d\u7528\u90a3\u4e48\u9ebb\u70e6\u6bcf\u6b21\u624b\u52a8\u6267\u884cprotoc\u4e86\u3002<\/p>\n
          \u5bf9\u524d\u9762\u7684protobuf\u5757\u505a\u4e00\u70b9\u70b9\u4fee\u6539\uff0c\u6211\u4eec\u751a\u81f3\u6765\u7f16\u8bd1protobuf\u7f16\u8bd1\u5668\u90fd\u4e0d\u9700\u8981\u4e86\u3002\u4fee\u6539\u5982\u4e0b\uff1a<\/p>\n
          protobuf {\r\n    protoc {\r\n        artifact = 'com.google.protobuf:protoc:3.0.0'<\/span>\r\n    }\r\n\r\n    generateProtoTasks {\r\n        all().each { task ->\r\n            task.builtins {\r\n                remove java\r\n            }\r\n            task.builtins {\r\n                java { }\r\n                cpp { }\r\n            }\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n
          \u5173\u4e8e .proto \u6587\u4ef6\u7684\u7f16\u5199\u65b9\u6cd5\uff0cProtocol Buffers API\u7b49\u66f4\u591a\u5185\u5bb9\uff0c\u53ef\u4ee5\u53c2\u8003\u00a0Protobuf\u5f00\u53d1\u8005\u6307\u5357<\/a>\u3001\u5728Java\u4e2d\u4f7f\u7528Protocol Buffers<\/a>\u53ca\u5176\u5b83\u76f8\u5173\u5b98\u65b9\u6587\u6863\u3002<\/p>\n
          Protobuf \u4e0e JSON \u5bf9\u6bd4\u6d4b\u8bd5<\/h1>\n
          \u8bf4\u4e86\u534a\u5929\uff0cProtobuf\u7684\u8868\u73b0\u7a76\u7adf\u5982\u4f55\u5462\uff1f\u8fd9\u91cc\u6211\u4eec\u5c31\u5bf9\u6bd4\u4e00\u4e0b\u6211\u4eec\u6700\u5e38\u7528\u5230\u7684JSON\u683c\u5f0f\u4e0eProtobuf\u7684\u8868\u73b0\u3002\u6d4b\u8bd5\u57fa\u4e8e\u5728\u5f00\u53d1\u8005\u4e2d\u4e00\u5411\u6709\u7740\u826f\u597d\u53e3\u7891\u7684fastjson\u8fdb\u884c\u3002<\/p>\n
          \u6d4b\u8bd5\u7528\u7684\u6570\u636e\u7ed3\u6784\u5982\u6211\u4eec\u524d\u9762\u770b\u5230\u7684AddressBook\u3002\u6211\u4eec\u901a\u8fc7\u6784\u9020\u5305\u542b\u4e0d\u540c\u4e2a\u6570Person\u7684AddressBook\u6570\u636e\uff0c\u5e76\u5bf9\u8fd9\u4e9b\u6570\u636e\u6267\u884c\u591a\u6b21\u7f16\u7801\u89e3\u7801\u64cd\u4f5c\uff0c\u6765\u6d4b\u8bd5Protobuf \u4e0e JSON\u7684\u8868\u73b0\u3002Protobuf\u7684\u7f16\u7801\/\u89e3\u7801\u6d4b\u8bd5\u4ee3\u7801\u5982\u524d\u9762\u770b\u5230\u7684AddressBookProtobuf\u3002JSON\u7684\u6d4b\u8bd5\u4ee3\u7801\u5219\u5982\u4e0b\u9762\u8fd9\u6837\uff1a<\/p>\n
          package<\/span> com.netease.volleydemo;\r\n\r\nimport<\/span> com.alibaba.fastjson.JSON;\r\n\r\nimport<\/span> java.util.ArrayList;\r\nimport<\/span> java.util.List;\r\n\r\npublic<\/span> class<\/span> AddressBookJson<\/span> <\/span>{\r\n    private<\/span> enum<\/span> PhoneType {\r\n        MOBILE,\r\n        HOME,\r\n        WORK\r\n    }\r\n\r\n    private<\/span> static<\/span> final<\/span> class<\/span> Phone<\/span> <\/span>{\r\n        private<\/span> String number;\r\n        private<\/span> PhoneType type;\r\n\r\n        public<\/span> Phone<\/span>()<\/span> <\/span>{\r\n\r\n        }\r\n\r\n        public<\/span> void<\/span> setNumber<\/span>(String number)<\/span> <\/span>{\r\n            this<\/span>.number = number;\r\n        }\r\n\r\n        public<\/span> String getNumber<\/span>()<\/span> <\/span>{\r\n            return<\/span> number;\r\n        }\r\n\r\n        public<\/span> void<\/span> setType<\/span>(PhoneType phoneType)<\/span> <\/span>{\r\n            this<\/span>.type = phoneType;\r\n        }\r\n\r\n        public<\/span> PhoneType getType<\/span>()<\/span> <\/span>{\r\n            return<\/span> type;\r\n        }\r\n    }\r\n    private<\/span> static<\/span> final<\/span> class<\/span> Person<\/span> <\/span>{\r\n        private<\/span> String name;\r\n        private<\/span> int<\/span> id;\r\n        private<\/span> String email;\r\n\r\n        private<\/span> List<Phone> phones;\r\n\r\n        public<\/span> Person<\/span>()<\/span> <\/span>{\r\n            phones = new<\/span> ArrayList<>();\r\n        }\r\n\r\n        public<\/span> void<\/span> setName<\/span>(String name)<\/span> <\/span>{\r\n            this<\/span>.name = name;\r\n        }\r\n\r\n        public<\/span> String getName<\/span>()<\/span> <\/span>{\r\n            return<\/span> name;\r\n        }\r\n\r\n        public<\/span> void<\/span> setId<\/span>(int<\/span> id)<\/span> <\/span>{\r\n            this<\/span>.id = id;\r\n        }\r\n\r\n        public<\/span> int<\/span> getId<\/span>()<\/span> <\/span>{\r\n            return<\/span> id;\r\n        }\r\n\r\n        public<\/span> void<\/span> setEmail<\/span>(String email)<\/span> <\/span>{\r\n            this<\/span>.email = email;\r\n        }\r\n\r\n        public<\/span> String getEmail<\/span>()<\/span> <\/span>{\r\n            return<\/span> email;\r\n        }\r\n\r\n        public<\/span> void<\/span> addPhone<\/span>(Phone phone)<\/span> <\/span>{\r\n            phones.add(phone);\r\n        }\r\n\r\n        public<\/span> List<Phone> getPhones<\/span>()<\/span> <\/span>{\r\n            return<\/span> phones;\r\n        }\r\n    }\r\n\r\n    private<\/span> static<\/span> final<\/span> class<\/span> AddressBook<\/span> <\/span>{\r\n        private<\/span> List<Person> persons;\r\n\r\n        public<\/span> AddressBook<\/span>()<\/span> <\/span>{\r\n            persons = new<\/span> ArrayList<>();\r\n        }\r\n\r\n        public<\/span> void<\/span> addPerson<\/span>(Person person)<\/span> <\/span>{\r\n            persons.add(person);\r\n        }\r\n\r\n        public<\/span> List<Person> getPersons<\/span>()<\/span> <\/span>{\r\n            return<\/span> persons;\r\n        }\r\n    }\r\n\r\n    public<\/span> static<\/span> String encodeTest<\/span>(String[] names)<\/span> <\/span>{\r\n        AddressBook addressBook = new<\/span> AddressBook();\r\n        for<\/span> (int<\/span> i = 0<\/span>; i < names.length; ++ i) {\r\n            Person person = new<\/span> Person();\r\n            person.setName(names[i]);\r\n            person.setEmail(\"zhangsan@gmail.com\"<\/span>);\r\n            person.setId(13958235<\/span>);\r\n\r\n            Phone phone = new<\/span> Phone();\r\n            phone.setNumber(\"0157-23443276\"<\/span>);\r\n            phone.setType(PhoneType.HOME);\r\n            person.addPhone(phone);\r\n\r\n            phone = new<\/span> Phone();\r\n            phone.setNumber(\"136183667387\"<\/span>);\r\n            phone.setType(PhoneType.MOBILE);\r\n            person.addPhone(phone);\r\n\r\n            addressBook.addPerson(person);\r\n        }\r\n        String jsonString = JSON.toJSONString(addressBook);\r\n        return<\/span> jsonString;\r\n    }\r\n\r\n    public<\/span> static<\/span> String encodeTest<\/span>(String[] names, int<\/span> times)<\/span> <\/span>{\r\n        for<\/span> (int<\/span> i = 0<\/span>; i < times - 1<\/span>; ++ i) {\r\n            encodeTest(names);\r\n        }\r\n        return<\/span> encodeTest(names);\r\n    }\r\n\r\n    public<\/span> static<\/span> AddressBook decodeTest<\/span>(String jsonStr, int<\/span> times)<\/span> <\/span>{\r\n        AddressBook addressBook = null<\/span>;\r\n        for<\/span> (int<\/span> i = 0<\/span>; i < times; ++ i) {\r\n            addressBook = JSON.parseObject(jsonStr, AddressBook.class);\r\n        }\r\n        return<\/span> addressBook;\r\n    }\r\n}\r\n<\/code><\/pre>\n
          \u901a\u8fc7\u5982\u4e0b\u7684\u8fd9\u6bb5\u4ee3\u7801\u6765\u6267\u884c\u6d4b\u8bd5\uff1a<\/p>\n
              private<\/span> class<\/span> ProtobufTestTask<\/span> extends<\/span> AsyncTask<\/span><Void<\/span>, Void<\/span>, Void<\/span>> <\/span>{\r\n        private<\/span> static<\/span> final<\/span> int<\/span> BUFFER_LEN = 8192<\/span>;\r\n\r\n        private<\/span> void<\/span> doEncodeTest<\/span>(String[] names, int<\/span> times)<\/span> <\/span>{\r\n            long<\/span> startTime = System.nanoTime();\r\n            AddressBookProtobuf.encodeTest(names, times);\r\n            long<\/span> protobufTime = System.nanoTime();\r\n            protobufTime = protobufTime - startTime;\r\n\r\n            startTime = System.nanoTime();\r\n            AddressBookJson.encodeTest(names, times);\r\n            long<\/span> jsonTime = System.nanoTime();\r\n            jsonTime = jsonTime - startTime;\r\n            Log.i(TAG, String.format(\"%-20s%-20s%-20s%-20s\"<\/span>, \"ProtobufTime\"<\/span>, String.valueOf(protobufTime),\r\n                    \"JsonTime\"<\/span>, String.valueOf(jsonTime)));\r\n        }\r\n\r\n        private<\/span> void<\/span> doEncodeTest10<\/span>(int<\/span> times)<\/span> <\/span>{\r\n            doEncodeTest(TestUtils.sTestNames10, times);\r\n        }\r\n\r\n        private<\/span> void<\/span> doEncodeTest50<\/span>(int<\/span> times)<\/span> <\/span>{\r\n            doEncodeTest(TestUtils.sTestNames50, times);\r\n        }\r\n\r\n        private<\/span> void<\/span> doEncodeTest100<\/span>(int<\/span> times)<\/span> <\/span>{\r\n            doEncodeTest(TestUtils.sTestNames100, times);\r\n        }\r\n\r\n        private<\/span> void<\/span> doEncodeTest<\/span>(int<\/span> times)<\/span> <\/span>{\r\n            doEncodeTest10(times);\r\n            doEncodeTest50(times);\r\n            doEncodeTest100(times);\r\n        }\r\n\r\n        private<\/span> void<\/span> compress<\/span>(InputStream is, OutputStream os)<\/span>\r\n                throws<\/span> Exception <\/span>{\r\n\r\n            GZIPOutputStream gos = new<\/span> GZIPOutputStream(os);\r\n\r\n            int<\/span> count;\r\n            byte<\/span> data[] = new<\/span> byte<\/span>[BUFFER_LEN];\r\n            while<\/span> ((count = is.read(data, 0<\/span>, BUFFER_LEN)) != -1<\/span>) {\r\n                gos.write(data, 0<\/span>, count);\r\n            }\r\n\r\n            gos.finish();\r\n            gos.close();\r\n        }\r\n\r\n        private<\/span> void<\/span> doDecodeTest<\/span>(String[] names, int<\/span> times)<\/span> <\/span>{\r\n            byte<\/span>[] protobufBytes = AddressBookProtobuf.encodeTest(names);\r\n            ByteArrayInputStream bais = new<\/span> ByteArrayInputStream(protobufBytes);\r\n\r\n            ByteArrayOutputStream baos = new<\/span> ByteArrayOutputStream();\r\n            try<\/span> {\r\n                compress(bais, baos);\r\n            } catch<\/span> (Exception e) {\r\n                e.printStackTrace();\r\n            }\r\n            Log.i(TAG, String.format(\"%-20s%-20s%-20s%-20s\"<\/span>, \"Protobuf Length\"<\/span>, String.valueOf(protobufBytes.length),\r\n                    \"Protobuf(GZIP) Length\"<\/span>, String.valueOf(baos.toByteArray().length)));\r\n\r\n            bais = new<\/span> ByteArrayInputStream(protobufBytes);\r\n            long<\/span> startTime = System.nanoTime();\r\n            AddressBookProtobuf.decodeTest(bais, times);\r\n            long<\/span> protobufTime = System.nanoTime();\r\n            protobufTime = protobufTime - startTime;\r\n\r\n            String jsonStr = AddressBookJson.encodeTest(names);\r\n            ByteArrayInputStream jsonBais = new<\/span> ByteArrayInputStream(jsonStr.getBytes());\r\n            ByteArrayOutputStream jsonBaos = new<\/span> ByteArrayOutputStream();\r\n            try<\/span> {\r\n                compress(jsonBais, jsonBaos);\r\n            } catch<\/span> (Exception e) {\r\n                e.printStackTrace();\r\n            }\r\n            Log.i(TAG, String.format(\"%-20s%-20s%-20s%-20s\"<\/span>, \"Json Length\"<\/span>, String.valueOf(jsonStr.getBytes().length),\r\n                    \"Json(GZIP) Length\"<\/span>, String.valueOf(jsonBaos.toByteArray().length)));\r\n\r\n            startTime = System.nanoTime();\r\n            AddressBookJson.decodeTest(jsonStr, times);\r\n            long<\/span> jsonTime = System.nanoTime();\r\n            jsonTime = jsonTime - startTime;\r\n\r\n            Log.i(TAG, String.format(\"%-20s%-20s%-20s%-20s\"<\/span>, \"ProtobufTime\"<\/span>, String.valueOf(protobufTime),\r\n                    \"JsonTime\"<\/span>, String.valueOf(jsonTime)));\r\n        }\r\n\r\n        private<\/span> void<\/span> doDecodeTest10<\/span>(int<\/span> times)<\/span> <\/span>{\r\n            doDecodeTest(TestUtils.sTestNames10, times);\r\n        }\r\n\r\n        private<\/span> void<\/span> doDecodeTest50<\/span>(int<\/span> times)<\/span> <\/span>{\r\n            doDecodeTest(TestUtils.sTestNames50, times);\r\n        }\r\n\r\n        private<\/span> void<\/span> doDecodeTest100<\/span>(int<\/span> times)<\/span> <\/span>{\r\n            doDecodeTest(TestUtils.sTestNames100, times);\r\n        }\r\n\r\n        private<\/span> void<\/span> doDecodeTest<\/span>(int<\/span> times)<\/span> <\/span>{\r\n            doDecodeTest10(times);\r\n            doDecodeTest50(times);\r\n            doDecodeTest100(times);\r\n        }\r\n\r\n        @Override<\/span>\r\n        protected<\/span> Void doInBackground<\/span>(Void... params)<\/span> <\/span>{\r\n            TestUtils.initTest();\r\n            doEncodeTest(5000<\/span>);\r\n\r\n            doDecodeTest(5000<\/span>);\r\n            return<\/span> null<\/span>;\r\n        }\r\n\r\n        @Override<\/span>\r\n        protected<\/span> void<\/span> onPostExecute<\/span>(Void aVoid)<\/span> <\/span>{\r\n            super<\/span>.onPostExecute(aVoid);\r\n        }\r\n    }\r\n<\/code><\/pre>\n
          \u8fd9\u91cc\u6211\u4eec\u6267\u884c3\u7ec4\u7f16\u7801\u6d4b\u8bd5\u53ca3\u7ec4\u89e3\u7801\u6d4b\u8bd5\u3002\u5bf9\u4e8e\u7f16\u7801\u6d4b\u8bd5\uff0c\u7b2c\u4e00\u7ec4\u7684\u5355\u4e2a\u6570\u636e\u4e2d\u5305\u542b10\u4e2aPerson\uff0c\u7b2c\u4e8c\u7ec4\u7684\u5305\u542b50\u4e2a\uff0c\u7b2c\u4e09\u7ec4\u7684\u5305\u542b100\u4e2a\uff0c\u7136\u540e\u5bf9\u6bcf\u4e2a\u6570\u636e\u5206\u522b\u6267\u884c5000\u6b21\u7684\u7f16\u7801\u64cd\u4f5c\u3002<\/p>\n
          \u5bf9\u4e8e\u89e3\u7801\u6d4b\u8bd5\uff0c\u4e09\u7ec4\u4e2d\u5355\u4e2a\u6570\u636e\u540c\u6837\u5305\u542b10\u4e2aPerson\u300150\u4e2a\u53ca100\u4e2a\uff0c\u7136\u540e\u5bf9\u6bcf\u4e2a\u6570\u636e\u5206\u522b\u6267\u884c5000\u6b21\u7684\u89e3\u7801\u7801\u64cd\u4f5c\u3002<\/p>\n
          \u5728Galaxy Nexus\u7684Android 4.4.4 CM\u5e73\u53f0\u4e0a\u6267\u884c\u4e0a\u8ff0\u6d4b\u8bd5\uff0c\u6700\u7ec8\u5f97\u5230\u5982\u4e0b\u7ed3\u679c\uff1a<\/p>\n
          \u7f16\u7801\u540e\u6570\u636e\u957f\u5ea6\u5bf9\u6bd4 (Bytes)<\/h4>\n\n\n\n\n\n\n\n
          Person\u4e2a\u6570<\/th>\nProtobuf<\/th>\nProtobuf\uff08GZIP\uff09<\/th>\nJSON<\/th>\nJSON\uff08GZIP\uff09<\/th>\n<\/tr>\n<\/thead>\n
          10<\/td>\n860<\/td>\n291<\/td>\n1703<\/td>\n344<\/td>\n<\/tr>\n
          50<\/td>\n4300<\/td>\n984<\/td>\n8463<\/td>\n1047<\/td>\n<\/tr>\n
          100<\/td>\n8600<\/td>\n1840<\/td>\n16913<\/td>\n1913<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \u76f8\u540c\u7684\u6570\u636e\uff0c\u7ecf\u8fc7Protobuf\u7f16\u7801\u7684\u6570\u636e\u957f\u5ea6\uff0c\u5927\u6982\u53ea\u6709JSON\u7f16\u7801\u7684\u6570\u636e\u957f\u5ea6\u7684\u4e00\u534a\u3002\u4f46\u5bf9\u7f16\u7801\u540e\u7684\u6570\u636e\u518d\u8fdb\u884c\u538b\u7f29\uff0c\u4e24\u8005\u5219\u5dee\u522b\u6bd4\u8f83\u5c0f\u3002<\/p>\n
          \u7f16\u7801\u6027\u80fd\u5bf9\u6bd4 (S)<\/h4>\n\n\n\n\n\n\n\n
          Person\u4e2a\u6570<\/th>\nProtobuf<\/th>\nJSON<\/th>\n<\/tr>\n<\/thead>\n
          10<\/td>\n4.687<\/td>\n6.558<\/td>\n<\/tr>\n
          50<\/td>\n23.728<\/td>\n41.315<\/td>\n<\/tr>\n
          100<\/td>\n45.604<\/td>\n81.667<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \u7f16\u7801\u6027\u80fd\u6700\u5c11\u63d0\u9ad8\u4e86 28.5%\uff0c\u6700\u591a\u5219\u63d0\u9ad8\u4e8644.2%\u3002Protobuf\u5728\u7f16\u7801\u6027\u80fd\u4e0a\uff0c\u76f8\u5bf9\u4e8eJSON\u8fd8\u662f\u6709\u8f83\u5927\u5e45\u5ea6\u7684\u63d0\u5347\u7684\u3002<\/p>\n
          \u89e3\u7801\u6027\u80fd\u5bf9\u6bd4 (S)<\/h4>\n\n\n\n\n\n\n\n
          Person\u4e2a\u6570<\/th>\nProtobuf<\/th>\nJSON<\/th>\n<\/tr>\n<\/thead>\n
          10<\/td>\n0.226<\/td>\n8.839<\/td>\n<\/tr>\n
          50<\/td>\n0.291<\/td>\n43.869<\/td>\n<\/tr>\n
          100<\/td>\n0.220<\/td>\n85.444<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \u89e3\u7801\u6027\u80fd\u65b9\u9762\uff0cProtobuf\u76f8\u5bf9\u4e8eJSON\uff0c\u5219\u66f4\u662f\u6709\u60ca\u4eba\u7684\u63d0\u5347\u3002Protobuf\u7684\u89e3\u7801\u65f6\u95f4\u51e0\u4e4e\u4e0d\u968f\u7740\u6570\u636e\u957f\u5ea6\u7684\u589e\u957f\u800c\u6709\u592a\u5927\u7684\u589e\u957f\uff0c\u800cJSON\u5219\u968f\u7740\u6570\u636e\u957f\u5ea6\u7684\u589e\u52a0\uff0c\u89e3\u7801\u6240\u9700\u8981\u7684\u65f6\u95f4\u4e5f\u8d8a\u6765\u8d8a\u957f\u3002<\/p>\n
          Done\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
          \n
          \u5c0f\u793c\u7269\u8d70\u4e00\u8d70\uff0c\u6765\u7b80\u4e66\u5173\u6ce8\u6211<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
          \u5728Android\u4e2d\u4f7f\u7528Protocol <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[24],"tags":[121],"class_list":["post-1645","post","type-post","status-publish","format-standard","hentry","category-value_docs","tag-05-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/1645","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=1645"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/1645\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=1645"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=1645"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=1645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}