Hessian+Spring配置

什么是Hessian？有什么用？

Hessian 是一个用于连接网络服务的二进制协议，Hessian通常通过Web应用来提供服务，通过接口暴露。官方文档http://hessian.caucho.com/doc/hessian-overview.xtp

• 配置教程
  1.服务端的配置
  采用maven管理项目，pom.xml如下（spring的依赖都添加了，可能部分无用:)）：

<dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>3.8.1</version>      <scope>test</scope>    </dependency>     <!--添加对spring的支持  -->    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-core</artifactId>        <version>4.1.7.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-beans</artifactId>        <version>4.1.7.RELEASE</version>    </dependency>    <dependency>         <groupId>org.springframework</groupId>         <artifactId>spring-tx</artifactId>         <version>4.1.7.RELEASE</version>        </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-context</artifactId>        <version>4.1.7.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-context-support</artifactId>        <version>4.1.7.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-context-support</artifactId>        <version>4.1.7.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-web</artifactId>        <version>4.1.7.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-webmvc</artifactId>        <version>4.1.7.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-aop</artifactId>        <version>4.1.7.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-aspects</artifactId>        <version>4.1.7.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-jdbc</artifactId>        <version>4.1.7.RELEASE</version>    </dependency>    <!-- 添加hessian的支持 -->    <!-- https://mvnrepository.com/artifact/com.caucho/hessian -->    <dependency>        <groupId>com.caucho</groupId>        <artifactId>hessian</artifactId>        <version>4.0.7</version>    </dependency>    <!-- 添加servlet支持 -->    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->    <dependency>        <groupId>javax.servlet</groupId>        <artifactId>javax.servlet-api</artifactId>        <version>3.1.0</version>    </dependency>  </dependencies>

web.xml的配置：

<?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">  <display-name>hessianTest</display-name>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>  <!-- springmvc的dispatchServlet-->    <servlet>          <servlet-name>hessian</servlet-name>          <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>          <load-on-startup>1</load-on-startup>      </servlet>      <servlet-mapping>          <servlet-name>hessian</servlet-name>          <url-pattern>/hessianTest/*</url-pattern>      </servlet-mapping>  </web-app>

在配置dispatcherServlet的时候，我没有使用init-param，那默认的配置文件就是servlet-name+servlet.xml，若有init-param,则是

<servlet>        <servlet-name>springDispatcherServlet</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>            <param-name>contextConfigLocation</param-name>            <param-value>*填写配置文件路径*</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>

我的hessian-servlet.xml:

<?xml version="1.0" encoding="UTF-8"?>  <beans xmlns="http://www.springframework.org/schema/beans"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      xmlns:context="http://www.springframework.org/schema/context"      xsi:schemaLocation="http://www.springframework.org/schema/beans             http://www.springframework.org/schema/beans/spring-beans-3.0.xsd             http://www.springframework.org/schema/context             http://www.springframework.org/schema/context/spring-context-3.0.xsd">       <!-- 用户服务 -->       <bean id="impl" class="com.jw.service.impl.ServiceImpl"></bean>    <bean name="/userClientService" class="org.springframework.remoting.caucho.HessianServiceExporter">          <property name="service" ref="impl"/>          <property name="serviceInterface" value="com.jw.service.Service"/>      </bean>  </beans>  

接口的编写：

package com.jw.service;import com.jw.entity.User;public interface Service {    public void helloHessian(User user);}

接口的实现类：

package com.jw.service.impl;import com.jw.entity.User;import com.jw.service.Service;public class ServiceImpl implements Service{    public void helloHessian(User user) {                      System.out.println("hello:"+user.getUserName()+user.getAge());    }}

实体类的配置，注意，实体类必须要进行序列化操作：

package com.jw.entity;import java.io.Serializable;public class User implements Serializable{    private static final long serialVersionUID = 1L;    private String userName;//用户名    private Integer age;//年龄    public String getUserName() {        return userName;    }    public void setUserName(String userName) {        this.userName = userName;    }    public Integer getAge() {        return age;    }    public void setAge(Integer age) {        this.age = age;    }    public static long getSerialversionuid() {        return serialVersionUID;    }    public User(String userName, Integer age) {        super();        this.userName = userName;        this.age = age;    }    public User() {        super();    }}

至此，服务端已经配置完成，启动服务端程序即可！

客户端的配置：
1.添加接口和实体类，和服务端的配置一样。
2.编写测试用例：

import com.caucho.hessian.client.HessianProxyFactory;import com.jw.entity.User;import com.jw.service.Service;public class Test {    public static void main(String[] args) throws Exception{        //Spring Hessian代理Servelet          String url = "http://localhost:8080/hessianTest/hessianTest/userClientService";          HessianProxyFactory factory = new HessianProxyFactory();          Service service= (Service) factory.create(Service.class, url);          service.sayHello(new User("jw", 18));      }}

至此，Hessian+Spring的配置已经完成。