protobuf转换方法

1. 编写protobuf代码如下：

package netty;
option java_package = "com.clq.netty.protoc";
option java_outer_classname = "SubsribeReqProto";message SubScribeReq{required int32 subReqID = 1;required string userName = 2;required string productName = 3;repeated string address = 4;
}

package netty;
option java_package = "com.clq.netty.protoc";
option java_outer_classname = "SubsribeRespProto";message SubScribeResp{required int32 subReqID = 1;required string respCode = 2;required string desc = 3;
}

2 . 执行如下命令(首先下载proto.exe 地址：https://download.csdn.net/download/u012516914/10564014)：

E:\tmp\protoc-2.5.0-win32> ./protoc.exe --java_out=./ SubscribeReq.proto
E:\tmp\protoc-2.5.0-win32> ./protoc.exe --java_out=./ SubscribeResp.proto

3 . 拷贝生成代码到IDE编辑器，下载地址见：https://download.csdn.net/download/u012516914/10564014 如果报错，则添加protobuf-java

        <dependency><groupId>com.google.protobuf</groupId><artifactId>protobuf-java</artifactId><version>2.5.0</version></dependency>

4 . 执行测试protobuf测试

package com.clq.netty.protoc;import com.google.protobuf.InvalidProtocolBufferException;import java.util.ArrayList;
import java.util.List;/*** Created by clq on 2018/7/24.*/
public class TestSubsribeReqProto {private static byte[] encode(SubsribeReqProto.SubScribeReq req) {return req.toByteArray();}private static SubsribeReqProto.SubScribeReq decode(byte[] body) throws InvalidProtocolBufferException {return SubsribeReqProto.SubScribeReq.parseFrom(body);}private static SubsribeReqProto.SubScribeReq createSubScripeReq() {SubsribeReqProto.SubScribeReq.Builder builder = SubsribeReqProto.SubScribeReq.newBuilder();builder.setSubReqID(1);builder.setUserName("clq");builder.setProductName("xxxx usb key");List<String> address = new ArrayList<>();address.add("河南郑州");address.add("河南洛阳");builder.addAllAddress(address);return builder.build();}public static void main(String[] args) {SubsribeReqProto.SubScribeReq subScripeReq = createSubScripeReq();System.out.println("Before encode:" + subScripeReq.toString());SubsribeReqProto.SubScribeReq subScripeReq1 = createSubScripeReq();System.out.println("After encode:" + subScripeReq1);System.out.println("Assert equ:" + subScripeReq1.equals(subScripeReq));}
}

5 . 打印结果

Before encode:subReqID: 1
userName: "clq"
productName: "xxxx usb key"
address: "\346\262\263\345\215\227\351\203\221\345\267\236"
address: "\346\262\263\345\215\227\346\264\233\351\230\263"After encode:subReqID: 1
userName: "clq"
productName: "xxxx usb key"
address: "\346\262\263\345\215\227\351\203\221\345\267\236"
address: "\346\262\263\345\215\227\346\264\233\351\230\263"Assert equ:true