SpringMVC MultiActionController的使用 -

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SpringMVC MultiActionController的使用

博客分类：

Spring

Spring MVC Web Servlet Java

Step 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">
    <display-name>springapp</display-name>
    <servlet>
        <servlet-name>spring-mvc</servlet-name>
        <servlet-class>
            org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>spring-mvc</servlet-name>
        <url-pattern>/web/*</url-pattern>
    </servlet-mapping>

</web-app>
servlet-mapping定义所有以/web/开头的url请求都会被spring 的DispatcherServlet处理转发。
DispatcherServlet会读取<servlet-name>.xml文件的配置信息初始化，该文件中urlMapping的定义决定当前请求转发给哪个controller来处理。
Step2：定义/WEB-INF/spring-mvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans default-autowire="byName" default-lazy-init="true">
    
    <bean id="InternalPathMethodNameResolver"        class="org.springframework.web.servlet.mvc.multiaction.InternalPathMethodNameResolver" />

    
    <bean id="viewResolver"       class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass">             <value>org.springframework.web.servlet.view.JstlView</value>
        </property>
    </bean>

    
    <bean id="loginCtrl" class="net.gbicc.xbrl.instance.web.LoginCtrl"/>

    
    <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
       <property name="mappings">
            <value>
                *.login=loginCtrl
                .................
            </value>
        </property>
    </bean>
</beans>

Step3：定义controller类并继承MultiActionController
package net.gbicc.xbrl.instance.web;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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

public class LoginCtrl extends MultiActionController {

    public ModelAndView login(HttpServletRequest req,
            HttpServletResponse res) throws ServletException, IOException {
        Map map = new HashMap();
        String userName = req.getAttribute("userName")
        map.put("userName", userName);
        return new ModelAndView("/index.jsp", map);
    }
}

通过配置文件，访问上面这个controller中某个方法的url即为：
localhost:8080/web/方法名
Step4：/index.jsp
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head></head>
<body>
    <c:out value="${map.userName}"/>
</body>
</html>

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