spring http invoker 实践
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搞了半天,终于把一个 Spring http invoker 的小例子运行起来了。
服务器端:
UserServices接口:
package spring.services;public interface UserServices {public void printUser();}
UserServicesImpl实现类:
package spring.services;public class UserServicesImpl implements UserServices {@Overridepublic void printUser() {System.out.println("这里只是测试了一下。");}}
web.xml:
<?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_3_0.xsd"id="WebApp_ID" version="3.0"><!-- DispatcherServlet --><servlet> <servlet-name>service</servlet-name> <servlet-class> org.springframework.web.servlet.DispatcherServlet </servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>WEB-INF/applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>service</servlet-name> <url-pattern>*.service</url-pattern> </servlet-mapping><!-- Spring配置 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 指定Spring Bean的配置文件所在目录。默认配置在WEB-INF目录下 --><context-param><param-name>contextConfigLocation</param-name><param-value>WEB-INF/applicationContext.xml</param-value></context-param><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list></web-app>
applicationContext.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"><bean id="httpService"class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter"><property name="service" ref="userServices" /><property name="serviceInterface" value="spring.services.UserServices"></property></bean><bean id="userServices" class="spring.services.UserServicesImpl" /><bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"><property name="mappings"> <props> <prop key="/user.service">httpService</prop> </props> </property> </bean></beans>
这样服务器端就搭建好了,等着客户端调用了。
地址为:http://服务器地址:端口/项目名/user.service
客户端:
web.xml:
<?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_3_0.xsd"id="WebApp_ID" version="3.0"><!-- Spring配置 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 指定Spring Bean的配置文件所在目录。默认配置在WEB-INF目录下 --><context-param><param-name>contextConfigLocation</param-name><param-value>WEB-INF/applicationContext.xml</param-value></context-param><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list></web-app>
applicationContext.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"><bean id="httpService"class="org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean"><property name="serviceUrl"><value>http://10.6.176.253:8080/spring_client/user.service</value></property><property name="serviceInterface" value="spring.services.UserServices"></property></bean></beans>
把地址改成你服务器的地址:http://服务器地址:端口/项目名/user.service
UserServlet:(随便一个servlet就可以了,action,jsp也可以)
package spring.servlets;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.context.support.WebApplicationContextUtils;import spring.services.UserServices;@WebServlet("/UserServlet")public class UserServlet extends HttpServlet {private static final long serialVersionUID = 1L;protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {UserServices userServices = (UserServices) WebApplicationContextUtils .getRequiredWebApplicationContext( request.getSession().getServletContext()).getBean("httpService"); System.out.println("--------------------------");userServices.printUser();System.out.println("--------------------------");}protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {this.doGet(request, response);}}
调用这个servlet的时候就会调用服务器端的
userServices.printUser();
了,当然,这方法是在服务器运行的,运行结果在服务器上面。
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