一、安装Protobuf编译器
首先按照github上的顺序进行，
brew install automake
brew install libtool
brew install protobuf
如果直接按照github上的步骤，会出现很多error，没有走下去。
所以记下了自己实践成功步骤：
1、git clone https://github.com/alexeyxo/protobuf-objc.git
localhost:~ clf$ git clone https://github.com/alexeyxo/protobuf-objc.git
Cloning into 'protobuf-objc'...
remote: Counting objects: 2896, done.
remote: Total 2896 (delta 0), reused 0 (delta 0), pack-reused 2895
Receiving objects: 100% (2896/2896), 33.48 MiB | 2.91 MiB/s, done.
Resolving deltas: 100% (1834/1834), done.
2、cd ~/protobuf-objc
localhost:~ clf$ cd ~/protobuf-objc
3、./autogen.sh
localhost:protobuf-objc clf$ ./autogen.sh
glibtoolize: putting auxiliary files in '.'.
glibtoolize: copying file './ltmain.sh'
glibtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
glibtoolize: copying file 'm4/libtool.m4'
glibtoolize: copying file 'm4/ltoptions.m4'
glibtoolize: copying file 'm4/ltsugar.m4'
glibtoolize: copying file 'm4/ltversion.m4'
glibtoolize: copying file 'm4/lt~obsolete.m4'
configure.ac:13: installing './compile'
configure.ac:9: installing './config.guess'
configure.ac:9: installing './config.sub'
configure.ac:10: installing './install-sh'
configure.ac:10: installing './missing'
src/compiler/Makefile.am:5: warning: source file 'google/protobuf/objectivec-descriptor.pb.cc' is in a subdirectory,
src/compiler/Makefile.am:5: but option 'subdir-objects' is disabled
automake: warning: possible forward-incompatibility.
automake: At least a source file is in a subdirectory, but the 'subdir-objects'
automake: automake option hasn't been enabled. For now, the corresponding output
automake: object file(s) will be placed in the top-level directory. However,
automake: this behaviour will change in future Automake versions: they will
automake: unconditionally cause object files to be placed in the same subdirectory
automake: of the corresponding sources.
automake: You are advised to start using 'subdir-objects' option throughout your
automake: project, to avoid future incompatibilities.
src/compiler/Makefile.am: installing './depcomp'
4、./configure
localhost:protobuf-objc clf$ ./configure
checking build system type... x86_64-apple-darwin16.7.0
checking host system type... x86_64-apple-darwin16.7.0
checking target system type... x86_64-apple-darwin16.7.0
checking for a BSD-compatible install... /usr/local/bin/ginstall -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/local/bin/gmkdir -p
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking whether gcc understands -c and -o together... yes
checking whether make supports the include directive... yes (GNU style)
checking dependency style of gcc... gcc3
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking C++ compiler flags...... use default: -g -O2 -DNDEBUG
checking how to print strings... printf
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by gcc... /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld
checking if the linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) is GNU ld... no
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 196608
checking how to convert x86_64-apple-darwin16.7.0 file names to x86_64-apple-darwin16.7.0 format... func_convert_file_noop
checking how to convert x86_64-apple-darwin16.7.0 file names to toolchain format... func_convert_file_noop
checking for /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... no
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for a working dd... /bin/dd
checking how to truncate binary pipes... /bin/dd bs=4096 count=1
checking for mt... no
checking if : is a manifest tool... no
checking for dsymutil... dsymutil
checking for nmedit... nmedit
checking for lipo... lipo
checking for otool... otool
checking for otool64... no
checking for -single_module linker flag... yes
checking for -exported_symbols_list linker flag... yes
checking for -force_load linker flag... yes
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... yes
checking for gcc option to produce PIC... -fno-common -DPIC
checking if gcc PIC flag -fno-common -DPIC works... yes
checking if gcc static flag -static works... no
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin16.7.0 dyld
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld
checking if the linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) is GNU ld... no
checking whether the g++ linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) supports shared libraries... yes
checking for g++ option to produce PIC... -fno-common -DPIC
checking if g++ PIC flag -fno-common -DPIC works... yes
checking if g++ static flag -static works... no
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin16.7.0 dyld
checking how to hardcode library paths into programs... immediate
checking for ANSI C header files... (cached) yes
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking for inttypes.h... (cached) yes
checking limits.h usability... yes
checking limits.h presence... yes
checking for limits.h... yes
checking for stdlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking for working memcmp... yes
checking for working strtod... yes
checking for ftruncate... yes
checking for memset... yes
checking for mkdir... yes
checking for strchr... yes
checking for strerror... yes
checking for strtol... yes
checking google/protobuf/stubs/common.h usability... yes
checking google/protobuf/stubs/common.h presence... yes
checking for google/protobuf/stubs/common.h... yes
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating src/compiler/Makefile
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
5、make
localhost:protobuf-objc clf$ make
/Applications/Xcode.app/Contents/Developer/usr/bin/make all-recursive
Making all in src/compiler
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT main.o -MD -MP -MF .deps/main.Tpo -c -o main.o main.cc
mv -f .deps/main.Tpo .deps/main.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objc_enum_field.o -MD -MP -MF .deps/objc_enum_field.Tpo -c -o objc_enum_field.o objc_enum_field.cc
mv -f .deps/objc_enum_field.Tpo .deps/objc_enum_field.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objc_file.o -MD -MP -MF .deps/objc_file.Tpo -c -o objc_file.o objc_file.cc
mv -f .deps/objc_file.Tpo .deps/objc_file.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objc_message_field.o -MD -MP -MF .deps/objc_message_field.Tpo -c -o objc_message_field.o objc_message_field.cc
mv -f .deps/objc_message_field.Tpo .deps/objc_message_field.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objc_enum.o -MD -MP -MF .deps/objc_enum.Tpo -c -o objc_enum.o objc_enum.cc
mv -f .deps/objc_enum.Tpo .deps/objc_enum.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objc_generator.o -MD -MP -MF .deps/objc_generator.Tpo -c -o objc_generator.o objc_generator.cc
mv -f .deps/objc_generator.Tpo .deps/objc_generator.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objc_primitive_field.o -MD -MP -MF .deps/objc_primitive_field.Tpo -c -o objc_primitive_field.o objc_primitive_field.cc
mv -f .deps/objc_primitive_field.Tpo .deps/objc_primitive_field.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objc_extension.o -MD -MP -MF .deps/objc_extension.Tpo -c -o objc_extension.o objc_extension.cc
mv -f .deps/objc_extension.Tpo .deps/objc_extension.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objc_helpers.o -MD -MP -MF .deps/objc_helpers.Tpo -c -o objc_helpers.o objc_helpers.cc
mv -f .deps/objc_helpers.Tpo .deps/objc_helpers.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objc_field.o -MD -MP -MF .deps/objc_field.Tpo -c -o objc_field.o objc_field.cc
mv -f .deps/objc_field.Tpo .deps/objc_field.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objc_message.o -MD -MP -MF .deps/objc_message.Tpo -c -o objc_message.o objc_message.cc
mv -f .deps/objc_message.Tpo .deps/objc_message.Po
g++ -DHAVE_CONFIG_H -I. -I../.. -g -O2 -DNDEBUG -MT objectivec-descriptor.pb.o -MD -MP -MF .deps/objectivec-descriptor.pb.Tpo -c -o objectivec-descriptor.pb.o `test -f 'google/protobuf/objectivec-descriptor.pb.cc' || echo './'`google/protobuf/objectivec-descriptor.pb.cc
mv -f .deps/objectivec-descriptor.pb.Tpo .deps/objectivec-descriptor.pb.Po
/bin/sh ../../libtool --tag=CXX --mode=link g++ -g -O2 -DNDEBUG -lprotobuf -lprotoc -o protoc-gen-objc main.o objc_enum_field.o objc_file.o objc_message_field.o objc_enum.o objc_generator.o objc_primitive_field.o objc_extension.o objc_helpers.o objc_field.o objc_message.o objectivec-descriptor.pb.o
libtool: link: g++ -g -O2 -DNDEBUG -o protoc-gen-objc main.o objc_enum_field.o objc_file.o objc_message_field.o objc_enum.o objc_generator.o objc_primitive_field.o objc_extension.o objc_helpers.o objc_field.o objc_message.o objectivec-descriptor.pb.o -Wl,-bind_at_load /usr/local/lib/libprotoc.dylib /usr/local/lib/libprotobuf.dylib -lz
make[2]: Nothing to be done for `all-am'.
6、make install
localhost:protobuf-objc clf$ make install
Making install in src/compiler
/usr/local/bin/gmkdir -p '/usr/local/bin'
/bin/sh ../../libtool --mode=install /usr/local/bin/ginstall -c protoc-gen-objc '/usr/local/bin'
libtool: install: /usr/local/bin/ginstall -c protoc-gen-objc /usr/local/bin/protoc-gen-objc
make[2]: Nothing to be done for `install-data-am'.
make[2]: Nothing to be done for `install-exec-am'.
make[2]: Nothing to be done for `install-data-am'.
localhost:protobuf-objc clf$
完成后，在/usr/local/bin/目录下的protoc-gen-objc就是我们需要的编译器。
二、创建proto文件
在桌面创建一个文件夹为ProtoBuf
实际工作中，proto文件都是后台提供给前端的，前端以此编译成.h和.m文件导入到工程中。
cd ~/Desktop/ProtoBuf
touch person.proto
vi person.proto
示例：一个message就是一个整体，里面有哪些必要的内容，哪些可选的内容。
message LoginRequest
{
optional bytes type =1;
required bytes username=2;
required bytes password =3;
}
message LoginResponse
{
required int32 code = 1;
optional bytes token = 2;
}
生成OC的.h和.m文件
localhost:~ clf$ cd /Users/clf/ProtoBuf
localhost:ProtoBuf clf$ protoc --plugin=/usr/local/bin/protoc-gen-objc person.proto --objc_out="./"
localhost:ProtoBuf clf$
然后在当前目录下就生成了Person.pb.m和Person.pb.h文件。
三、工程中使用Protobuf
1、创建ProtoBuf工程
localhost:~ clf$ cd ~/Desktop/ProtoBuf
2、创建Podfile
localhost:~ clf$ touch Podfile
输入
platform :ios, ‘8.0’
use_frameworks!
target ‘ProtoBuf’ do
pod 'ProtocolBuffers', '~> 1.9.11'
end
3、
pod install
4、将刚刚生成的.h和.m文件导入工程中，在工程中导入文件
#import <ProtocolBuffers/ProtocolBuffers.h>
#import "Person.pb.h"
就可以开始你的项目代码了。
+ (void)post
{
NSURL *url = [NSURL URLWithString:@"http://www.baidu.com"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.timeoutInterval = 0.5;
request.HTTPMethod = @"POST";
// 设置请求体
LoginRequestBuilder *builder = [LoginRequest builder];
// PdClickInfoBuilder *builder = [PdClickInfo builder];
NSString *type = [NSString stringWithFormat:@"1"];
NSString *nameStr = [NSString stringWithFormat:@"13714181323"];
NSString *pwdStr = [NSString stringWithFormat:@"111111"];
builder.type = [type dataUsingEncoding:NSUTF8StringEncoding];
builder.username = [nameStr dataUsingEncoding:NSUTF8StringEncoding];
builder.password = [pwdStr dataUsingEncoding:NSUTF8StringEncoding];
LoginRequest *req = [builder build];
NSLog(@"data = %@",[req data]);
request.HTTPBody = [req data];
NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if (error){
NSLog(@"error = %@",error);
}
else{
// NSLog(@"------ data = %@",data);
NSLog(@"success");
// 返回的数据
NSString *result = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"%@",result);
}
}];
[task resume];
}
感觉自己不是特别理解，又折腾了些参看博客
这里我直接拿博客中的.proto文件进行尝试
进行编译的时候出现了些问题
wifi:ProtoBuf clf$ vi myClass.proto
wifi:ProtoBuf clf$ protoc --plugin=/usr/local/bin/protoc-gen-objc myClass.proto --objc_out="./"
myClass.proto:1:10: Unrecognized syntax identifier "proto3". This parser only recognizes "proto2".
wifi:ProtoBuf clf$ protoc --plugin=/usr/local/bin/protoc-gen-objc myClass.proto --objc_out="./"
myClass.proto:4:9: Expected "required", "optional", or "repeated".
myClass.proto:5:9: Expected "required", "optional", or "repeated".
myClass.proto:13:9: Expected "required", "optional", or "repeated".
myClass.proto:16:17: Expected "required", "optional", or "repeated".
myClass.proto:17:17: Expected "required", "optional", or "repeated".
myClass.proto:26:9: Expected "required", "optional", or "repeated".
myClass.proto:27:9: Expected "required", "optional", or "repeated".
myClass.proto:28:9: Expected "required", "optional", or "repeated".
wifi:ProtoBuf clf$ vim class.proto
wifi:ProtoBuf clf$ protoc --plugin=/usr/local/bin/protoc-gen-objc class.proto --objc_out="./"
修改之后
syntax = "proto2";
message Person
{
optional string name = 1;
optional int32 age = 2;
enum DeviceType{
IOS = 0;
Android = 1;
WP = 2;
}
optional DeviceType deviceType = 3; //设备类型
message Result{
optional string url = 1;
optional string title = 2;
}
repeated Result results = 4;
repeated Animal animals = 5;
}
message Animal{
optional float weight = 1;
optional double price = 2;
optional string namme = 3;
}
发现proto2和proto3生成的.pb.h和.pb.m文件差别好大，参考的博客中生成的代码方法完全不一样。这里是proto2语法
备注：
也可以安装别的版本的ProtocolBuffer
参考博客：
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