Java 远程调用之Hessian简例

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1，导入jar包

<dependency><groupId>org.resthub</groupId><artifactId>hessian</artifactId><version>4.0.8</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.3.3</version></dependency>

2，提供接口

/** * 服务接口 */public interface ISayHelloService {/** * @param name * @return */String doSayHello(String name);

3，提供实现类

/** * 服务接口实现 */@Servicepublic class SayHelloServiceImpl implements ISayHelloService {public String doSayHello(String name) {return doSayHello(name, "hello");}}

4，在server项目中配置web.xml

  <servlet>    <servlet-name>hessian</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>/WEB-INF/hessian-servlet.xml</param-value>    </init-param>  </servlet>    <servlet-mapping>    <servlet-name>hessian</servlet-name>    <url-pattern>/hessian/*</url-pattern>  </servlet-mapping>

5，新建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"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd          http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd          http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"default-lazy-init="false"><bean id="defaultHandlerMapping" class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" /><context:component-scan base-package="com.rpc.service.impl"/><!-- 测试 --><bean id="sayHelloService" class="com.rpc.service.impl.SayHelloServiceImpl" /> <bean id="/hello" class="org.springframework.remoting.caucho.HessianServiceExporter"><property name="service" ref="sayHelloService" /><!-- 服务接口 --><property name="serviceInterface" value="com.hatchet.rpc.service.ISayHelloService" /></bean></beans>

6,在client 项目中引用remote.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/context http://www.springframework.org/schema/context/spring-context-3.1.xsd           http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">           <context:property-placeholder ignore-resource-not-found="true"location="classpath*:/application.properties" />     <bean id="hello" class="org.springframework.remoting.caucho.HessianProxyFactoryBean">            <property name="serviceUrl" value="http://${rpc.server.ip}:${rpc.server.port}/crowdfunding-rpc-server/hessian/hello" />            <property name="serviceInterface" value="com.hatchet.rpc.service.ISayHelloService" />            <property name="overloadEnabled" value="true" />           <property name="readTimeout" value="${rpc.readTimeout}" />    </bean></beans>

application.properties文件

rpc.server.ip=127.0.0.1rpc.server.port=8080rpc.readTimeout=60000

大功告成，通过spring注入接口调用服务即可

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