Spring HTTP Invoker

1 Overview

Spring HTTP Invoker is a remote call model in the spring framework. It executes HTTP-based remote calls, that is, objects can be transmitted between networks through the firewall and java serialization mechanism. The client can easily call objects on the remote server just like calling local objects. Note that both the server and client use the Spring framework.

2 Examples

The following is a simple example for mobile terminals to use the management background database.

Preparation: Be sure to introduce the jar package of spring-web. Other jar packages will not be introduced...

2.1 Server

Interface

Package com. dcXt. mobile. service. ba;   Import java. util. List; Import com. dcXt. business. entity. Tb01;   Public interface BaMobileService { Boolean save (Tb01 obj );   }

 

Implementation class

Bean configuration using annotation (remind me not to forget to configure bean)

Package com. dcXt. mobile. service. ba;   Import javax. annotation. Resource; Import org. springframework. orm. hibernate3.HibernateTemplate; Import org. springframework. stereotype. Component;   Import com. dcXt. business. entity. Tb01;   @ Component ("baMobileServiceImpl ") Public class BaMobileServiceImpl implements BaMobileService { Private HibernateTemplate hibernateTemplate; Public HibernateTemplate getHibernateTemplate (){ Return hibernateTemplate; } @ Resource Public void setHibernateTemplate (HibernateTemplate hibernateTemplate ){ This. hibernateTemplate = hibernateTemplate; } @ Override Public boolean save (Tb01 obj ){ HibernateTemplate. saveOrUpdate (obj ); System. out. println (obj. toString ()); Return true; } }

 

 

Web. xml

<? Xml version ="1.0"Encoding =UTF-8"?> <Web-app version ="3.0" Xmlns =Http://java.sun.com/xml/ns/javaee" Xmlns: xsi =Http://www.w3.org/2001/XMLSchema-instance" Xsi: schemaLocation =Http://java.sun.com/xml/ns/javaee Http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <! -- 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> classpath: applicationContext-service.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 entry --> <Context-param> <Param-name> contextConfigLocation </param-name> <Param-value> Classpath: applicationContext. xml </Param-value> </Context-param> <Listener> <listener-class> org. springframework. web. context. ContextLoaderListener </listener-class> </Listener> <Welcome-file-list> <Welcome-file> login. jsp </welcome-file> </Welcome-file-list>   </Web-app>

 

Classpath: applicationContext-service.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 ="BaMobileService"Class ="Org. springframework. remoting. httpinvoker. HttpInvokerServiceExporter"> <Property name ="Service"Ref ="BaMobileServiceImpl"/> <Property name ="ServiceInterface"Value ="Com. dcXt. mobile. service. ba. BaMobileService"> </Property> </Bean> <Bean id ="UrlMapping"Class ="Org. springframework. web. servlet. handler. SimpleUrlHandlerMapping"> <Property name ="Mappings"> <Props> <Prop key ="/Ba. service"> BaMobileService </prop> </Props> </Property> </Bean>   </Beans>

Description: client access address./Ba. serviceTo call thisBaMobileService, the client interface is consistent with the server, which is equivalent to directly using thisBaMobileServiceImpl

 

2.2 Client

Interface (completely consistent with the server side, package path)

Package com. dcXt. mobile. service. ba;   Import com. dcXt. business. entity. Tb01;   Public interface BaMobileService { Boolean save (Tb01 obj );   }

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 ="BaMobileService" Class ="Org. springframework. remoting. httpinvoker. HttpInvokerProxyFactoryBean"> <Property name ="ServiceUrl"> <Value> http: // 127.0.0.1: 8081/dcXt/ba. service </value> </Property> <Property name ="ServiceInterface"Value ="Com. dcXt. mobile. service. ba. BaMobileService"> </Property> </Bean> <Bean id ="BaAction"Class ="Com. dcXt. business. action. BaAction"Scope ="Prototype"> <Property name ="BaMobileService"Ref ="BaMobileService"> </Property> </Bean> </Beans>

Note: direct use of ActionBaMobileServiceYou can.

 

3. Conclusion

Pay attention to the server and client writing methods. The client and the server have the same interface, and then the client directly calls the server implementation class through the interface.