Thrift下Java客户端与服务器端的开发

1创建Thrift文件

Thrift文件与编程语言无关，用于定义数据类型和服务接口，然后生成用来构建RPC客户和服务器所需的全部代码。

1.1编写testJava.thrift

#!/usr/local/bin/thrift --gen java

namespace java Test

service Something {
   i32 ping()
}

 

1.2运行thrift编译器，生成项目源文件

在linux命令行下输入：Thrift –gen javatestJava.thrift

生成的源文件在./gen-java/目录下。

 

2创建Java服务器

进入./gen-java目录，确保系统的CLASSPATH设置正确。libthrift.jar,，slf4j-api和slf4j-simple这几个包都需要包含在CLASSPATH里。

2.1编写SomethingImpl.java

package Test;

import org.apache.thrift.TException;

class SomethingImpl implements Something.Iface {
 public SomethingImpl() {}
 public int ping() throws TException {
    System.out.println( "Recieve ping from client..." );
    return 0;
}
}

2.2创建Server.java

package Test;

import java.io.IOException;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TBinaryProtocol.Factory;
import org.apache.thrift.server.TServer;
import org.apache.thrift.server.TThreadPoolServer;
import org.apache.thrift.transport.TServerSocket;
import org.apache.thrift.transport.TTransportException;

public class Server {
private voidstart() {
try {
   TServerSocket serverTransport = new TServerSocket(7911);
   Something.Processor processor = new Something.Processor(newSomethingImpl());
   Factory protFactory = new TBinaryProtocol.Factory(true, true);
   TServer server = new TThreadPoolServer(processor, serverTransport,protFactory);
   System.out.println("Starting server on port 7911 ...");
   server.serve();
  } catch (TTransportException e) {
   e.printStackTrace();
  } catch (Exception e) {
   e.printStackTrace();
}
}

public static void main(String args[]){
   Server srv = new Server();
   srv.start();
}
}

3创建Java客户端

创建Client.java

package Test;

import java.io.IOException;
import org.apache.thrift.*;
import org.apache.thrift.protocol.*;
import org.apache.thrift.transport.*;

public class Client {
     public static void main(String [] args) {
          try {
                    TTransport transport = newTSocket("localhost", 7911);
                    TProtocol protocol = newTBinaryProtocol(transport);
                    Something.Client client =new Something.Client(protocol);
                    transport.open();
                    System.out.println("Client calls ping()");
                    client.ping();
                    transport.close();
               } catch (TException x) {
                    x.printStackTrace();
               }
       }
}

4编译及运行

4.1编译

在linux命令行下输入：javac *.java，生成客户端与服务器端的class文件。

4.2运行

首先启动服务器。退到gen-java目录，输入java Test/Server，屏幕显示如下：

Starting server on port 7911 ...

然后启动客户端。在同一目录下输入java Test/Client，屏幕显示如下：

Client calls ping()

这时服务器端的输出多了一行：

Recieve ping from client...