（二）重定向以及传值
一、第一种重定向
- index.jsp
<body> <a href="<%=path%>/Usercontroller/redired">重定向controllr</a> </body>
- web.xml
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc-servlet.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> </web-app>
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springmvc-servlet.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" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd"> <!-- 激活@Required @Autowired @Resource等标注--> <context:annotation-config></context:annotation-config> <!-- DispatcherServlet上下文，扫描base-package包中的类，并自动加载到spring容器中 --> <context:component-scan base-package="com.shyroke.controller"> </context:component-scan> <!-- 启用@Component，@Controller，@Service，@Repository注解驱动 --> <mvc:annotation-driven/> <!-- 配置视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/views/"/> <property name="suffix" value=".jsp"/> </bean> </beans>
- controller
package com.shyroke.controller; import javax.servlet.http.HttpServletRequest; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.support.RedirectAttributes; import org.springframework.web.servlet.mvc.support.RedirectAttributesModelMap; import org.springframework.web.servlet.view.RedirectView; @Controller @RequestMapping(value="/Usercontroller") public class UserController { @RequestMapping(value="/redired") public ModelAndView redired(HttpServletRequest request){ ModelAndView modelAndView=new ModelAndView(); modelAndView.addObject("userName", "admin"); modelAndView.addObject("passWord", "123520"); RedirectView redirectView=new RedirectView(request.getContextPath()+"/views/success.jsp"); modelAndView.setView(redirectView); return modelAndView; } }
- success.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ page isELIgnored="false" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> 重定向传值el表达式要加param。变量名 userName:${param.userName} passWord:${param.passWord} </body> </html>
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<%@ page isELIgnored="false" %> 该工程的jsp版本为1.2 默认不开启el表达式，所以该加上此行否则el表达式不生效。 - 结果
二、第二种重定向
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除了controller层之外其他配置都与第一种相同
package com.shyroke.controller; import javax.servlet.http.HttpServletRequest; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.support.RedirectAttributes; import org.springframework.web.servlet.mvc.support.RedirectAttributesModelMap; import org.springframework.web.servlet.view.RedirectView; @Controller @RequestMapping(value="/Usercontroller") public class UserController { @RequestMapping(value="/redired") public String redired(HttpServletRequest request){ String url="/views/success.jsp?userName=user1&passWord=111"; return "redirect:"+url; } }
结果：
