Thrift第一个示例

第一步：引入thrift依赖包

compile group: 'org.apache.thrift', name: 'libthrift', version: '0.9.3'

第二步:创建配置文件HelloService.thrift

// 定义命名空间namespace java com.mhy.thrift.gen// 定义Serviceservice HelloService {    //定义方法    string sayHello(1: string username)}

第三步：生成代码

在命令行下执行如下命令

➜  thrift lsHello.thrift➜  thrift thrift --gen java HelloService.thrift➜  thrift lsHelloService.thrift gen-java

生成完之后的项目结构如下

其中gen-java下生成的结果一般是一种API的描述，这个东西就是提供给服务调用方来使用，而我们还需要针对于这个API来做实现

接下来把生成的代码文件拷贝到项目源码目录下面

其中gen包下就是通过Thrift生成的IDL(Interface Defination Language)，client包下存放客户端代码，server包下存放服务端代码。

第四步：服务接口实现

package com.mhy.thrift.server;import com.mhy.thrift.gen.HelloService;import org.apache.thrift.TException;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * @author mahaiyuan * @ClassName: HelloServiceHandler * @date 2017-05-04 下午2:29 */public class HelloServiceHandler implements HelloService.Iface {  private static final Logger logger = LoggerFactory.getLogger(HelloServiceHandler.class);  @Override  public String sayHello(String username) throws TException {    logger.info("HelloServiceHandler.sayHello username={}", username);    return "Hello " + username;  }}

编写服务端启动类

package com.mhy.thrift.server;import com.mhy.thrift.gen.HelloService;import org.apache.thrift.TProcessor;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.server.TServer;import org.apache.thrift.server.TSimpleServer;import org.apache.thrift.transport.TServerSocket;import org.apache.thrift.transport.TTransportException;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * @author mahaiyuan * @ClassName: HelloServer * @date 2017-05-04 下午2:38 */public class HelloServer {  private static final int SERVER_PORT = 8888;  private static final Logger logger = LoggerFactory.getLogger(HelloServer.class);  public static void main(String[] args) {    logger.info("HelloServer start server .......");    try {      TProcessor tprocessor = new HelloService.Processor<HelloService.Iface>(new HelloServiceHandler());      // 简单的单线程服务模型，一般用于测试      TServerSocket serverTransport = new TServerSocket(SERVER_PORT);      TServer.Args tArgs = new TServer.Args(serverTransport);      tArgs.processor(tprocessor);      tArgs.protocolFactory(new TBinaryProtocol.Factory());      TServer server = new TSimpleServer(tArgs);      server.serve();    } catch (TTransportException e) {      logger.warn("HelloServer exception.", e);    }  }}

编写客户端实现

package com.mhy.thrift.client;import com.mhy.thrift.gen.HelloService;import org.apache.thrift.TException;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.protocol.TProtocol;import org.apache.thrift.transport.TSocket;import org.apache.thrift.transport.TTransport;import org.apache.thrift.transport.TTransportException;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * @author mahaiyuan * @ClassName: HelloClient * @date 2017-05-04 下午2:48 */public class HelloClient {  private static final Logger logger = LoggerFactory.getLogger(HelloClient.class);  public static final String SERVER_IP = "localhost"; //服务端地址  public static final int SERVER_PORT = 8888; //服务端端口  public static final int TIMEOUT = 30000;  //超时时间  public static void main(String[] args) {    String username = "张三";    TTransport transport = null;    try {      transport = new TSocket(SERVER_IP, SERVER_PORT, TIMEOUT);      // 协议要和服务端一致      TProtocol protocol = new TBinaryProtocol(transport);      HelloService.Client client = new HelloService.Client(          protocol);      transport.open();      logger.info("call sayHello username={}", username);      String result = client.sayHello(username);      logger.info("call sayHello result={}", result);    } catch (TTransportException e) {      e.printStackTrace();    } catch (TException e) {      e.printStackTrace();    } finally {      if (null != transport) {        transport.close();      }    }  }}

接下来先启动服务端，然后再运行客户端。在控制台下得到如下结果
服务端控制台下输出的内容

[main] INFO com.mhy.thrift.server.HelloServer - HelloServer start server .......[main] INFO com.mhy.thrift.server.HelloServiceHandler - HelloServiceHandler.sayHello username=张三

客户端控制台下输出的内容

[main] INFO com.mhy.thrift.client.HelloClient - call sayHello username=张三[main] INFO com.mhy.thrift.client.HelloClient - call sayHello result=Hello 张三

代码地址：https://github.com/mhy2011/thrift-examples