hessian(二)--与spring整合

一、简介

这里我们介绍hessian与spring的整合，包含服务端和客户端

二、服务端开发步骤

1、添加maven依赖

<dependency>
    <groupId>com.caucho</groupId>
    <artifactId>hessian</artifactId>
    <version>4.0.7</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>3.2.9.RELEASE</version>
</dependency>

2、添加服务接口和相应实现类

public interface HelloService {
    String sayHello(String name);
}

@Service("helloService")
public class HelloServiceImpl implements HelloService{
    public String sayHello(String name) {
        return "hello,"+name;
    }
}

3、在spring中配置服务接口、实现类以及访问地址

<?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.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context-3.2.xsd
       ">
    <context:annotation-config />
    <context:component-scan base-package="com.dragon.hessianServer" />

    <bean name="/helloService" class="org.springframework.remoting.caucho.HessianServiceExporter">
        <property name="service" ref="helloService"/>
        <property name="serviceInterface">
            <value>com.dragon.hessianServer.service.HelloService</value>
        </property>
    </bean>
</beans>

4、在web.xml配置springmvc的servlet

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            /WEB-INF/applicationContext.xml,
        </param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <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>/hessian/*</url-pattern>
    </servlet-mapping>
</web-app>

 这样， hessian和spring整合的服务配置完成，启动web项目即可开启服务。

三、客户端开发步骤

1、添加maven依赖

<dependency>
    <groupId>com.caucho</groupId>
    <artifactId>hessian</artifactId>
    <version>4.0.7</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>4.3.9.RELEASE</version>
</dependency>

2、添加自定义的hessian服务接口jar包（本例即是包含HelloService的包）

3、在spring中配置接口服务bean,主要包含访问地址，服务接口

<?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.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context-3.2.xsd
       ">
    <context:annotation-config />

    <bean id="helloService" class="org.springframework.remoting.caucho.HessianProxyFactoryBean">
        <property name="serviceUrl" value="http://localhost:8080/hessian/helloService"/>
        <property name="serviceInterface" value="com.dragon.hessianServer.service.HelloService"/>
    </bean>
</beans>

4、服务调用测试

public class HessianSpringClient {
    public static void main(String[] args) throws MalformedURLException {
        ApplicationContext ctx = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
        HelloService helloService = (HelloService)ctx.getBean("helloService");
        System.out.println(helloService.sayHello("apple"));
    }
}

输出结果：

hello,apple