使用dubbox开发REST应用

新建项目，添加Maven支持。

在pom.xml中添加依赖。

<dependency>
    <groupId>org.jboss.resteasy</groupId>
    <artifactId>resteasy-jaxrs</artifactId>
    <version>3.0.7.Final</version>
</dependency>
<dependency>
    <groupId>org.jboss.resteasy</groupId>
    <artifactId>resteasy-client</artifactId>
    <version>3.0.7.Final</version>
</dependency>
<dependency>
    <groupId>javax.validation</groupId>
    <artifactId>validation-api</artifactId>
    <version>1.0.0.GA</version>
</dependency>

<!-- 如果要使用json序列化 -->
<dependency>
    <groupId>org.jboss.resteasy</groupId>
    <artifactId>resteasy-jackson-provider</artifactId>
    <version>3.0.7.Final</version>
</dependency>

<!-- 如果要使用xml序列化 -->
<dependency>
    <groupId>org.jboss.resteasy</groupId>
    <artifactId>resteasy-jaxb-provider</artifactId>
    <version>3.0.7.Final</version>
</dependency>

<!-- 如果要使用netty server -->
<dependency>
    <groupId>org.jboss.resteasy</groupId>
    <artifactId>resteasy-netty</artifactId>
    <version>3.0.7.Final</version>
</dependency>

<!-- 如果要使用Sun HTTP server -->
<dependency>
    <groupId>org.jboss.resteasy</groupId>
    <artifactId>resteasy-jdk-http</artifactId>
    <version>3.0.7.Final</version>
</dependency>

<!-- 如果要使用tomcat server -->
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>8.0.11</version>
</dependency>
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-logging-juli</artifactId>
    <version>8.0.11</version>
</dependency>

新建接口

public interface UserService {

    public ArrayList<String> sayHello(String uid);

}

新建接口实现类

@Path("rest")
@Produces({MediaType.APPLICATION_JSON, MediaType.TEXT_XML})
public class UserServiceImpl implements UserService {

    @GET
    @Path("/sayHello/{uid}")
    @Override
    public ArrayList<String> sayHello(@PathParam("uid")String uid) {
        ArrayList<String> x= new ArrayList<String>();
        x.add("xxxx");
        return x;
    }

}

新建dubbox配置文件

<dubbo:application name="platform" owner="programmer" organization="dubbox"/>

<dubbo:registry address="zookeeper://localhost:2181" />

<dubbo:protocol name="rest" port="8081" server="tomcat" ></dubbo:protocol>

<dubbo:service interface="rest.UserService" ref="userServiceImpl" />

<bean id="userServiceImpl" class="rest.UserServiceImpl"></bean>

新建启动类启动dubbox的rest服务

System.out.println("准备启动");
ClassPathXmlApplicationContext ap=new ClassPathXmlApplicationContext("applicationContext_dubbo.xml");
UserService userSrv=(UserService) ap.getBean("userServiceImpl");
System.out.println("启动DemoServiceProvider完成");
userSrv.sayHello("xushuai");
try {
    System.in.read();
} catch (IOException e) {
    e.printStackTrace();
}

验证：启动zookeeper，启动应用。

通过浏览器访问rest接口。