HttpInvoker远程调用实例

最新推荐文章于 2025-07-08 14:54:41 发布

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文章标签：

#Spring #BBS #XML #应用服务器 #Servlet

本文介绍如何使用Spring框架的HttpInvoker机制来实现远程服务的暴露与调用。通过具体的Java代码示例展示了服务接口定义、实现及配置过程，并通过web.xml进一步配置了服务的启动与映射。

一、服务器端：

1、服务接口与实现类

Java代码

1. package org.eesite.bbs.remote;
2.
3.
4.
5. public interface IRemoteService {
6.
7. public String getString(String msg);
8.
9. }
10.
11.
12.
13. package org.eesite.bbs.remote;
14.
15.
16.
17. public class RemoteServiceImpl implements IRemoteService {
18.
19. public String getString(String msg) {
20.
21. String str = "正在请求调用...远程服务调用成功! " + msg;
22.
23. return str;
24.
25. }
26.
27. }

package org.eesite.bbs.remote;

public interface IRemoteService {
public String getString(String msg);
}

package org.eesite.bbs.remote;

public class RemoteServiceImpl implements IRemoteService {
public String getString(String msg) {
String str = "正在请求调用...远程服务调用成功! " + msg;
return str;
}
}

2、服务暴露配置remote-servlet.xml

Xml代码

1. <?xml version="1.0" encoding="UTF-8"?>
2.
3. <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
4.
5. <beans>
6.
7. 
8.
9. <bean id="rmiService"
10.
11. class="org.eesite.bbs.remote.RemoteServiceImpl" />
12.
13.
14.
15. <bean name="/remoteService"
16.
17. class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">
18.
19. <property name="service" ref="rmiService" />
20.
21. <property name="serviceInterface"
22.
23. value="org.eesite.bbs.remote.IRemoteService" />
24.
25. </bean>
26.
27. </beans>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>

<bean id="rmiService"
class="org.eesite.bbs.remote.RemoteServiceImpl" />

<bean name="/remoteService"
class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">
<property name="service" ref="rmiService" />
<property name="serviceInterface"
value="org.eesite.bbs.remote.IRemoteService" />
</bean>
</beans>

3、web.xml配置

Xml代码

1. 
2.
3. <context-param>
4.
5. <param-name>contextConfigLocation</param-name>
6.
7. <param-value>/WEB-INF/remote-servlet.xml</param-value>
8.
9. </context-param>
10.
11.
12.
13. 
14.
15. <servlet>
16.
17. <servlet-name>remote</servlet-name>
18.
19. <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
20.
21. 
22.
23. <load-on-startup>1</load-on-startup>
24.
25. </servlet>
26.
27. 
28.
29. <servlet-mapping>
30.
31. <servlet-name>remote</servlet-name>
32.
33. <url-pattern>/remoting

public class TestRemote {

public static void main(String[] args) {

ApplicationContext applicationContext = new ClassPathXmlApplicationContext("remote.xml");

IRemoteService service = (IRemoteService) applicationContext

.getBean("remoteService");

String msg = service.getString("哈哈，我来了!");

System.out.println(msg);

}

}

测试结果：正在请求调用...远程服务调用成功! 哈哈，我来了!