Java远程方法调用：Hessian

    公司不同pool之间提供service都是通过hessian来开放接口的，个人觉得hessian的使用非常简单。做个demo如下：

0.首先创建web工程，并加载hessian.jar。

1.创建service，即我们通过它来提供接口：

    public interface BasicService {                    public void setServiceName(String serverName);                    public String getServiceName();                        public User createUser();                    }  

2.创建service实现：

    public class BasicServiceImpl implements BasicService {                    private String serviceName;                        @Override            public void setServiceName(String serverName) {                this.serviceName = serverName;            }                        @Override            public String getServiceName() {                return this.serviceName;            }                        @Override            public User createUser() {                return new User("zhangsan", "123456");            }        }  

3.创建需要通过hessian传递的对象（必须序列化）：

    public class User implements Serializable {                    private static final long serialVersionUID = 5792818254468116836L;                    private String username;                        private String password;                        public User(String username, String password) {                this.username = username;                this.password = password;            }                    public String getUsername() {                return username;            }                    public void setUsername(String username) {                this.username = username;            }                    public String getPassword() {                return password;            }                    public void setPassword(String password) {                this.password = password;            }        }  

4.配置web.xml:

    <?xml version="1.0" encoding="UTF-8"?>        <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">          <display-name>HessianServer</display-name>                    <servlet>            <servlet-name>basic</servlet-name>            <servlet-class>com.caucho.hessian.server.HessianServlet</servlet-class>            <init-param>                <param-name>service-class</param-name>                <param-value>com.loujinhe.service.impl.BasicServiceImpl</param-value>            </init-param>          </servlet>                    <servlet-mapping>            <servlet-name>basic</servlet-name>            <url-pattern>/basic</url-pattern>          </servlet-mapping>                  </web-app>  

5.创建测试用例：

    import java.net.MalformedURLException;                import org.junit.Before;        import org.junit.Test;                import com.caucho.hessian.client.HessianProxyFactory;        import com.loujinhe.service.BasicService;                        public class BasicServiceTest {                        private BasicService basicService;                    @Before            public void init() throws MalformedURLException {                HessianProxyFactory factory = new HessianProxyFactory();                String url = "http://localhost:8080/HessianServer/basic";                basicService = (BasicService)factory.create(BasicService.class, url);            }                        @Test            public void testBasic() {                basicService.setServiceName("BasicService");                System.out.println(basicService.getServiceName());                                System.out.println(basicService.createUser().getUsername());                System.out.println(basicService.createUser().getPassword());            }        }  

6.启动服务器，运行测试用例，会得到如下结果：

BasicService

zhangsan

123456

来自：http://blog.csdn.net/loujinhe/article/details/8479238