ProtoBuf 的java使用

碰巧用到Proto,算是笔记吧

windows :

1,两个文件：proto.exe,  protobuf-java-2.4.1.jar

2,建立一个工程TestPb，在下面建立一个proto文件件，用来存放【。proto】文件
3，将proto,exe放在工程下，

4，建立一个msg.proto文件：

option java_package = "com.protobuftest.protobuf";
option java_outer_classname = "PersonProbuf";
 
message Person {
  required string name = 1;
  required int32 id = 2;
  optional string email = 3;
 
  enum PhoneType {
    MOBILE = 0;
    HOME = 1;
    WORK = 2;
  }
 
  message PhoneNumber {
    required string number = 1;
    optional PhoneType type = 2 [default = HOME];
  }
 
  repeated PhoneNumber phone = 4;
 
  message CountryInfo {
          required string name = 1;
          required string code = 2;
          optional int32 number = 3;
  }
}
 
message AddressBook {
  repeated Person person = 1;
}
5，生成 java文件：在proto.exe目录下：protoc  --java_out=./src   ./proto/msg.proto

 

 

6,copy个测试示例了

新建一个文件TestPb.java
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package com.protobuftest.protobuf;
 
import java.util.List;
 
import com.google.protobuf.InvalidProtocolBufferException;
import com.protobuftest.protobuf.PersonProbuf;
import com.protobuftest.protobuf.PersonProbuf.Person;
import com.protobuftest.protobuf.PersonProbuf.Person.PhoneNumber;
 
public class TestPb {
 
/**
 * @param args
 */
public static void main(String[] args) {
// TODO Auto-generated method stub
PersonProbuf.Person.Builder builder = PersonProbuf.Person.newBuilder();
builder.setEmail("[e-mail]");
builder.setId(1);
builder.setName("TestName");
builder.addPhone(PersonProbuf.Person.PhoneNumber.newBuilder().setNumber("131111111").setType(PersonProbuf.Person.PhoneType.MOBILE));
builder.addPhone(PersonProbuf.Person.PhoneNumber.newBuilder().setNumber("011111").setType(PersonProbuf.Person.PhoneType.HOME));
 
Person person = builder.build();
byte[] buf = person.toByteArray();
 
try {
Person person2 = PersonProbuf.Person.parseFrom(buf);
System.out.println(person2.getName() + ", " + person2.getEmail());
List<PhoneNumber> lstPhones = person2.getPhoneList();
for (PhoneNumber phoneNumber : lstPhones) {
System.out.println(phoneNumber.getNumber());
}
} catch (InvalidProtocolBufferException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
 
System.out.println(buf);
 
}
 
}
***********************************************

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生成java文件:PersonProbuf.java
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工程文件结构：