使用Avro实现RPC简单示例03

接第01部分,本节用来说明Java语言的代码实现。

使用avro生成java代码之后,会生成两个java文件,无论是Client还是Server都要包含这两个文件。

首先是Server端:
1、新建一个java项目,引用以下jar包
avro-1.8.0.jar
avro-ipc-1.8.0.jar
jackson-core-asl-1.9.13.jar
jackson-mapper-asl-1.9.13.jar
netty-3.5.13.Final.jar
slf4j-api-1.7.7.jar
slf4j-simple-1.7.7.jar

2、项目中添加生成的两个java文件。

3、新建一个类MyAvroServer,实现JustATest接口

package com.neohope.avro.test;

import org.apache.avro.AvroRemoteException;

public class MyAvroServer implements JustATest{
    @Override
    public CharSequence SayHelloTo(Person person) throws AvroRemoteException {
        return "Hello "+person.getName();
    }

    @Override
    public int Add(int a, int b) throws AvroRemoteException {
        return a+b;
    }
}

4、修改TestServer.java

package com.neohope.avro.test;

import org.apache.avro.ipc.NettyServer;
import org.apache.avro.ipc.specific.SpecificResponder;

import java.net.InetSocketAddress;
import java.util.Scanner;

public class TestServer {
    public static void main(String[] args) {
        NettyServer server = new NettyServer(new SpecificResponder(
                JustATest.class,
                new MyAvroServer()),
                new InetSocketAddress(1900));
        server.start();
        Scanner sc=new Scanner(System.in);
        sc.nextLine();
        server.close();
    }
}

5、编译运行

然后是Client端:
1、新建一个java项目,引用以下jar包
avro-1.8.0.jar
avro-ipc-1.8.0.jar
jackson-core-asl-1.9.13.jar
jackson-mapper-asl-1.9.13.jar
netty-3.5.13.Final.jar
slf4j-api-1.7.7.jar
slf4j-simple-1.7.7.jar

2、项目中添加生成的两个java文件。

3、修改TestClient.java

package com.neohope.avro.test;

import org.apache.avro.AvroRemoteException;
import org.apache.avro.ipc.NettyTransceiver;
import org.apache.avro.ipc.specific.SpecificRequestor;
import org.apache.avro.util.Utf8;

import java.io.IOException;
import java.net.InetSocketAddress;

public class TestClient {
    public static void main(String[] args) throws IOException {
        NettyTransceiver client = new NettyTransceiver(new InetSocketAddress("localhost",1900));

        JustATest proxy = (JustATest) SpecificRequestor.getClient(JustATest.class, client);

        Person person = new Person();
        person.setSex(new Utf8("male"));
        person.setName(new Utf8("neohope"));
        person.setAddress(new Utf8("shanghai"));
        System.out.println(proxy.SayHelloTo(person));
        System.out.println(proxy.Add(1,2));

        client.close();
    }
}

4、编译运行

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