Spring HTTP Service

简述：

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：