Spring HTTP Service

基于Spring MVC, 使用Http Service Invoke远程调用方法

(参考： http://blog.csdn.net/hanqunfeng/article/details/4303127)

步骤：

1. 本地定义接口，并在配置文件中说明

PersonService.java

package com.anialy.httpservice.service;

import com.anialy.httpservice.entity.Person;

public interface PersonService {
    public Person getPersonByName(String name);
}

PersonService.java

package com.anialy.httpservice.service.impl;

import com.anialy.httpservice.entity.Person;
import com.anialy.httpservice.service.PersonService;

public class PersonServiceImpl implements PersonService{

    public Person getPersonByName(String name) {
        if("anialy".equals(name))
            return new Person("anialy", 100);
        return null;
    }

}

applicationContext-server-http-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- 指定Spring配置文件的Schema信息 -->
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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-2.5.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">

    <bean id="httpService"
        class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">
        <property name="service">
            <ref bean="personService" />
        </property>
        <property name="serviceInterface" value="com.anialy.httpservice.service.PersonService">
        </property>
    </bean>

    <bean id="personService" class="com.anialy.httpservice.service.impl.PersonServiceImpl"/>



</beans>

2. mvc配置服务uri与对应的service

applicationContext-mvc.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:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">

    <mvc:view-controller path="/" view-name="redirect:/home" />
    <mvc:view-controller path="/home" view-name="home" />

    <!-- Spring Service Invoke -->
    <bean
        class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
         <property name="mappings">
            <props>
                  <prop key="/service/httpService">httpService</prop>
            </props>
        </property>
    </bean>


    <!-- Spring MVC -->
    <bean
        class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <value>
                /test=testController
            </value>
        </property>
        <property name="order" value="1" />
    </bean>

    <bean id="testController" class="com.anialy.webproj.controller.TestController">
        <property name="methodNameResolver" ref="paramResolver" />
    </bean>

    <!-- 定义JSP -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    </bean>

    <bean id="paramResolver"
        class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver">
        <property name="paramName" value="action" />
        <property name="defaultMethodName" value="test" />
    </bean>
</beans>

3.  客户端配置uri的invoke

applicationContext-client-http-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- 指定Spring配置文件的Schema信息 -->
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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-2.5.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">

    <bean id="personService"
        class="org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean"
        depends-on="propertyConfigurer">
        <property name="serviceUrl" >
            <value>
                http://${host}:${port}/${contextPath}/service/httpService
            </value>
        </property>
        <property name="serviceInterface" value="com.anialy.httpservice.service.PersonService">
        </property>
    </bean>

</beans>

设置属性文件

system.properties

serviceName=localhost
host=127.0.0.1
port=8080
contextPath=WebProj

加载配置文件的xml

applicationContext-constants.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: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/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
    <bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:jdbc.properties</value>
                <value>classpath:system.properties</value>
            </list>
        </property>
    </bean>
</beans>

4. 编写测试方法

TestHttpServiceInvoke.java

package httpservice;

import java.io.IOException;

import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.anialy.httpservice.entity.Person;
import com.anialy.httpservice.service.PersonService;

public class TestHttpServiceInvoke {
    private static final Logger logger
        = LoggerFactory.getLogger(TestHttpServiceInvoke.class);

    private ApplicationContext ctx;
    private PersonService personService;

    @Before
    public void init() throws IOException{
        ctx = new ClassPathXmlApplicationContext(new String[]{
                "classpath*:/applicationContext-client-http-service.xml",
                "classpath*:/applicationContext-constants.xml"
        });

        personService = (PersonService)  ctx.getBean("personService");
        System.out.println("");
    }


    @Test
    public void test() {
        Person person = personService.getPersonByName("anialy");
        logger.info("姓名：" + person.getName());
        logger.info("年龄：" + person.getAge());
    }
}

输出：