附：实体类

Class ： User

  1. package com.c61.entity;
  2.  
  3. import java.text.SimpleDateFormat;
  4. import java.util.Date;
  5.  
  6. import org.springframework.format.annotation.DateTimeFormat;
  7.  
  8. import com.alibaba.fastjson.annotation.JSONField;
  9.  
  10. public class User {
  11.     private Integer id;
  12.     private String name;
  13.     //@DateTimeFormat(pattern="yyyy-MM-dd HH:mm:ss")
  14.     @DateTimeFormat(pattern="yyyy-MM-dd")//定制在接收请求参数时的日期格式
  15.     @JSONField(format="yyyy-MM-dd")//作用在java序列化成json时
  16.     private Date birth;
  17.     private String dateStr;
  18.  
  19.     public String getDateStr() {
  20.         return dateStr;
  21.     }
  22.     public void setDateStr(String dateStr) {
  23.         this.dateStr = dateStr;
  24.     }
  25.     public Integer getId() {
  26.         return id;
  27.     }
  28.     public void setId(Integer id) {
  29.         this.id = id;
  30.     }
  31.     public String getName() {
  32.         return name;
  33.     }
  34.     public void setName(String name) {
  35.         this.name = name;
  36.     }
  37.     public Date getBirth() {
  38.         return birth;
  39.     }
  40.     public void setBirth(Date birth) {
  41.         this.birth = birth;
  42.         SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd");
  43.         this.dateStr=format.format(birth);
  44.     }
  45.     @Override
  46.     public String toString() {
  47.         return "User [id=" + id + ", name=" + name + ", birth=" + birth + "]";
  48.     }
  49.     public User(){}
  50.     public User(Integer id, String name, Date birth) {
  51.         super();
  52.         this.id = id;
  53.         this.name = name;
  54.         this.birth = birth;
  55.     }
  56.  
  57. }

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

1.配置web.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <web-app version="2.5"
  3.     xmlns="http://java.sun.com/xml/ns/javaee"
  4.     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  5.     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
  6.     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  7.   <display-name></display-name>
  8.   <welcome-file-list>
  9.     <welcome-file>index.jsp</welcome-file>
  10.   </welcome-file-list>
  11.  
  12.   <!-- 前端控制器
  13.          /=默认的url-pattern
  14.          /a/b/c  /a
  15.  
  16.          /a/d/c
  17.          /a/d
  18.          /a
  19.          /
  20.          *注意：此控制器默认加载/WEB-INF下的xxx-servlet.xml文件
  21.                         ：其中xxx等于【DispatcherServlet的配置名】
  22.   -->
  23.   <servlet>
  24.       <servlet-name>mvc61</servlet-name>
  25.       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  26.       <init-param>
  27.           <param-name>contextConfigLocation</param-name>
  28.           <param-value>classpath:mvc62.xml</param-value>
  29.       </init-param>
  30.       <!-- 随项目启动而启动 -->
  31.       <load-on-startup>1</load-on-startup>
  32.   </servlet>
  33.   <servlet-mapping>
  34.       <servlet-name>mvc61</servlet-name>
  35.       <url-pattern>/</url-pattern>
  36.   </servlet-mapping>
  37.  
  38.   <!-- 专治Post请求参数乱码 -->
  39.   <filter>
  40.       <filter-name>encoding61</filter-name>
  41.       <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  42.       <!-- 将请求的编码方式设置为utf-8 -->
  43.       <init-param>
  44.           <param-name>encoding</param-name>
  45.           <param-value>utf-8</param-value>
  46.       </init-param>
  47.   </filter>
  48.   <filter-mapping>
  49.       <filter-name>encoding61</filter-name>
  50.       <url-pattern>/*</url-pattern>
  51.   </filter-mapping>
  52. </web-app>

2.配置控制器

Class : DataController

  1. package com.c61.controller;
  2.  
  3. import java.util.Date;
  4. import java.util.Map;
  5.  
  6. import javax.servlet.http.HttpServletRequest;
  7. import javax.servlet.http.HttpSession;
  8.  
  9. import org.springframework.stereotype.Controller;
  10. import org.springframework.ui.Model;
  11. import org.springframework.ui.ModelMap;
  12. import org.springframework.web.bind.annotation.RequestMapping;
  13.  
  14. import com.c61.entity.User;
  15.  
  16. @Controller
  17. @RequestMapping(value="/mvc4")//等价于namespace
  18. public class DataController {
  19.     //DefaultAnnotationHandlerMapping a;
  20.     @RequestMapping("/data1")//等价于<action name="mvc1"
  21.     public String testData(HttpServletRequest req){
  22.         req.setAttribute("name", "limeOracle");
  23.         User user=new User();
  24.         user.setId(1);
  25.         user.setName("lime");
  26.         user.setBirth(new Date());
  27.         req.setAttribute("user", user);
  28.         return "forward:/data.jsp";
  29.     }
  30.     @RequestMapping("/data2")//等价于<action name="mvc1"
  31.     public String testData2(HttpSession session,Integer id,String name,HttpServletRequest req){
  32.         session.setAttribute("name", "limeOracle");
  33.         User user=new User();
  34.         user.setId(1);
  35.         user.setName("lime");
  36.         user.setBirth(new Date());
  37.         session.setAttribute("user", user);
  38.         return "redirect:/data2.jsp";
  39.     }
  40.     @RequestMapping("/data3")//等价于<action name="mvc1"
  41.     public String testData3(Model model,Map map,ModelMap modelM){
  42.         User user=new User();
  43.         user.setId(1);
  44.         user.setName("lime");
  45.         user.setBirth(new Date());
  46.         //model.addAttribute("user",user);
  47.         //model.addAttribute("name", "Oracle");
  48.         //map.put("user", user);
  49.         //map.put("name", "Oracle2");
  50.         modelM.addAttribute("user", user);
  51.         modelM.addAttribute("name", "Oracle3");
  52.         return "forward:/data.jsp";
  53.     }
  54.     //当使用 Model，Map,ModelMap在重定向中传值时，可以将简单数据(数字,字符串)拼接在url中
  55.     @RequestMapping("/data4")//等价于<action name="mvc1"
  56.     public String testData4(Model model,Map map,ModelMap modelM){
  57.         User user=new User();
  58.         user.setId(1);
  59.         user.setName("lime");
  60.         user.setBirth(new Date());
  61.         //model.addAttribute("user",user);
  62.         //model.addAttribute("name", "Oracle");
  63.         //map.put("user", user);
  64.         //map.put("name", "Oracle2");
  65.         modelM.addAttribute("user", user);
  66.         modelM.addAttribute("name", "Oracle3");
  67.         return "redirect:/data.jsp";
  68.     }
  69. }

3 配置视图

View : data.jsp

  1. <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
  2. <%
  3. String path = request.getContextPath();
  4. String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
  5. %>
  6.  
  7. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
  8. <html>
  9.   <head>
  10.     <base href="<%=basePath%>">
  11.  
  12.     <title>My JSP 'index.jsp' starting page</title>
  13.     <meta http-equiv="pragma" content="no-cache">
  14.     <meta http-equiv="cache-control" content="no-cache">
  15.     <meta http-equiv="expires" content="0">
  16.     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  17.     <meta http-equiv="description" content="This is my page">
  18.     <!--
  19.     <link rel="stylesheet" type="text/css" href="styles.css">
  20.     -->
  21.   </head>
  22.  
  23.   <body>
  24.     name:${requestScope.name}--<br/>
  25.     user.id:${requestScope.user.id }--<br/>
  26.     user.name:${requestScope.user.name }--<br/>
  27.     user.dateStr:${requestScope.user.dateStr }--<br/>
  28.     param.name:${param.name }--<br/>
  29.   </body>
  30. </html>

Client :

View : data2.jsp

  1. <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
  2. <%
  3. String path = request.getContextPath();
  4. String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
  5. %>
  6.  
  7. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
  8. <html>
  9.   <head>
  10.     <base href="<%=basePath%>">
  11.  
  12.     <title>My JSP 'index.jsp' starting page</title>
  13.     <meta http-equiv="pragma" content="no-cache">
  14.     <meta http-equiv="cache-control" content="no-cache">
  15.     <meta http-equiv="expires" content="0">
  16.     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  17.     <meta http-equiv="description" content="This is my page">
  18.     <!--
  19.     <link rel="stylesheet" type="text/css" href="styles.css">
  20.     -->
  21.   </head>
  22.  
  23.   <body>
  24.     name:${sessionScope.name}--<br/>
  25.  
  26.     user.id:${sessionScope.user.id }--<br/>
  27.     user.name:${sessionScope.user.name }--<br/>
  28.     user.dateStr:${sessionScope.user.dateStr }--<br/>
  29.  
  30.     param.name:${param.name }<br/>
  31.   </body>
  32. </html>

Client :

Client :

View : data.jsp

  1. <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
  2. <%
  3. String path = request.getContextPath();
  4. String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
  5. %>
  6.  
  7. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
  8. <html>
  9.   <head>
  10.     <base href="<%=basePath%>">
  11.  
  12.     <title>My JSP 'index.jsp' starting page</title>
  13.     <meta http-equiv="pragma" content="no-cache">
  14.     <meta http-equiv="cache-control" content="no-cache">
  15.     <meta http-equiv="expires" content="0">
  16.     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  17.     <meta http-equiv="description" content="This is my page">
  18.     <!--
  19.     <link rel="stylesheet" type="text/css" href="styles.css">
  20.     -->
  21.   </head>
  22.  
  23.   <body>
  24.     name:${requestScope.name}--<br/>
  25.     user.id:${requestScope.user.id }--<br/>
  26.     user.name:${requestScope.user.name }--<br/>
  27.     user.dateStr:${requestScope.user.dateStr }--<br/>
  28.     param.name:${param.name }--<br/>
  29.   </body>
  30. </html>

Client :

View : data.jsp

  1. <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
  2. <%
  3. String path = request.getContextPath();
  4. String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
  5. %>
  6.  
  7. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
  8. <html>
  9.   <head>
  10.     <base href="<%=basePath%>">
  11.  
  12.     <title>My JSP 'index.jsp' starting page</title>
  13.     <meta http-equiv="pragma" content="no-cache">
  14.     <meta http-equiv="cache-control" content="no-cache">
  15.     <meta http-equiv="expires" content="0">
  16.     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  17.     <meta http-equiv="description" content="This is my page">
  18.     <!--
  19.     <link rel="stylesheet" type="text/css" href="styles.css">
  20.     -->
  21.   </head>
  22.  
  23.   <body>
  24.     name:${requestScope.name}--<br/>
  25.     user.id:${requestScope.user.id }--<br/>
  26.     user.name:${requestScope.user.name }--<br/>
  27.     user.dateStr:${requestScope.user.dateStr }--<br/>
  28.     param.name:${param.name }--<br/>
  29.   </body>
  30. </html>

Client :

Client :

转发中数据传递

  1. 1>利用HttpServletRequest
  2.     public String testData(HttpServletRequest req){
  3.         req.setAttribute("name", "limeOracle");
  4.         ...
  5.     }
  6.     页面中${requestScope.name}
  7. 2>Model  Map   ModelMap 存活周期为一个请求，可以在一个请求内数据传递
  8.     public String testData3(Model model,Map map,ModelMap modelM){
  9.         User user=new User(...);
  10.         //model.addAttribute("user",user);
  11.         //model.addAttribute("name", "Oracle");
  12.         //map.put("user", user);
  13.         //map.put("name", "Oracle2");
  14.         modelM.addAttribute("user", user);
  15.         modelM.addAttribute("name", "Oracle3");
  16.         ...
  17.     }
  18.     页面中${requestScope.name}
  19.          ${requestScope.user.id}

重定向中数据传递

  1. 1>利用session
  2.   public String testData2(HttpSession session）{
  3.     session.setAttribute(“name”,xxx);
  4.   }
  5.   页面中：${sessionScope.name}
  6. 2>如果数据是简单数据(数字,字符串)的话
  7.   public String testData4(Model model,Map map,ModelMap modelM){
  8.     //会将简单数据拼接在url中，成为请求参数
  9.     modelM.addAttribute("name", "Oracle3");
  10.     return "redirect:/data.jsp";
  11.   }
  12.   页面中${param.name}

在JSP(View)中取值

  1. EL+JSTL
  2. ${xxxx}
  3. <c:if>
  4. <c:forEach>
  5.  
  6. 啦啦啦

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