構建簡單的SPRING工程

構建簡單的SPRING工程

描述配置一個簡單的SPRING工程的步驟，工程中只包含一個控制器MainController。控制器使用方法名解析器，在訪問控制器時，需要加上控制器類中的具體方法名。比如MainController控制器的映射地址是main.do，當訪問時需要調用main.do?method=showMain(showMain爲控制器類中具體存在的一個方法)。

工程代碼

1：配置WEB.XML

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<!-- spring Servlet 參數-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/ApplicationContext.xml
</param-value>
</context-param>

<!-- spring Listener -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- spring servlet -->
<servlet>
<servlet-name>spring-dispatcher</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>2</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>spring-dispatcher</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>

2：配置WEB-INFO/ApplicationContext.xml

需要放在WEB-INFO下

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

<beans>
<!--方法名解析器 -->
<bean id="methodNameResolver"
class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver">
<property name="paramName">
<value>method</value>
</property>
</bean>

<!-- 控制器,使用方法名解析 -->
<bean name="/main.do" class="controller.MainController">
<property name="methodNameResolver">
<ref bean="methodNameResolver"/>
</property>
</bean>
</beans>

3：創建控制器MainController

控制器集成了MultiActionController

package controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

/**
* spring控制器
* @author ahopedog
*
*/
public class MainController extends MultiActionController{
public ModelAndView showMain(HttpServletRequest req, HttpServletResponse resp){

System.out.println("調用showMain");
return new ModelAndView("/jsp/main.jsp");
}
}

4：訪問控制器

/工程名/main.do?method=showMain