出力データは：どのようにデータページをもたらすために
SpringMVCのほかに方法にアップロードされて本来の要求とセッション外だけでなく、どのようにデータ・ページを持って
SpringMVCは道のデータセッションを保存するために、一時的な場を提供することができます
web.xmlの
<?xml version="1.0" encoding="UTF-8"?>
<!--suppress ALL -->
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>5.SpringMVC_output</display-name>
<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>
<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 字符编码过滤器 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>springDispatcherServlet-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<!--suppress ALL -->
<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.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<context:component-scan base-package="com.atguigu"></context:component-scan>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
index.jspの
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>
<!-- SpringMVC如何给页面携带数据过来； --><br/>
<a href="handle01">handle01</a><br/>
<a href="handle02">handle02</a><br/>
<a href="handle03">handle03</a><br/>
<a href="handle04">handle04</a>
</body>
</html>success.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>
<h1>Hello</h1>
pageContext：${pageScope.msg }<br/>
request：${requestScope.msg }<br/>
session：${sessionScope.msg }-${sessionScope.haha}<br/>
application：${applicationScope.msg }<br/>
<%System.out.println("来到页面了...."); %>
</body>
</html>OutputController.java
package com.atguigu.controller;
import java.util.Map;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.SessionAttributes;
import org.springframework.web.servlet.ModelAndView;
@SessionAttributes(value={"msg"},types={String.class})
@Controller
public class OutputController {
//args:如何确定目标方法每一个参数的值；最难？
// method.invoke(this,args)
@RequestMapping("/handle01")
public String handle01(Map<String, Object> map){
map.put("msg", "你好");
map.put("haha", "哈哈哈");
System.out.println("map的类型："+map.getClass());
return "success";
}
/**
* Model：一个接口
* @param model
* @return
*/
@RequestMapping("/handle02")
public String handle02(Model model){
model.addAttribute("msg", "你好坏！");
model.addAttribute("haha", 18);
System.out.println("model的类型："+model.getClass());
return "success";
}
@RequestMapping("/handle03")
public String handle03(ModelMap modelMap){
modelMap.addAttribute("msg", "你好棒！");
System.out.println("modelmap的类型："+modelMap.getClass());
return "success";
}
/**
* 返回值是ModelAndView;可以为页面携带数据
* @return
*/
@RequestMapping("/handle04")
public ModelAndView handle04(){
//之前的返回值我们就叫视图名；视图名视图解析器是会帮我们最终拼串得到页面的真实地址；
//ModelAndView mv = new ModelAndView("success");
ModelAndView mv = new ModelAndView();
mv.setViewName("success");
mv.addObject("msg", "你好哦！");
return mv;
}
}
