springMvc30-sessionatrribute存储session数据

创建maven项目就不说了，需要的找我前面的博客
pom.xml文件
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
       <modelVersion>4.0.0</modelVersion>
       <groupId>com.geyao</groupId>
       <artifactId>springmaven</artifactId>
       <version>0.0.1-SNAPSHOT</version>
       <dependencies>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-webmvc</artifactId>
         <version>4.2.8.RELEASE</version>
     </dependency>
     <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-context</artifactId>
         <version>4.2.8.RELEASE</version>
     </dependency>
     <dependency>  
             <groupId>javax.servlet</groupId>  
             <artifactId>servlet-api</artifactId>  
             <version>2.5</version>  
         </dependency>  
     <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-core</artifactId>
         <version>4.2.8.RELEASE</version>
     </dependency>
     <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-beans</artifactId>
         <version>4.2.8.RELEASE</version>
     </dependency>
     <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-web</artifactId>
         <version>4.2.8.RELEASE</version>
     </dependency>
     <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-aop</artifactId>
         <version>4.2.8.RELEASE</version>
     </dependency>
     <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-expression</artifactId>
         <version>4.2.8.RELEASE</version>
     </dependency>
       </dependencies>
     </project>web.xml
    <?xml version="1.0" encoding="UTF-8"?>
     <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>Springmaven01</display-name>
      <welcome-file-list>
       <welcome-file>/WEB-INF/jsp/home.jsp</welcome-file>
      </welcome-file-list>
      
        
      
         <!-- 处理中文乱码 -->
         <filter>
             <filter-name>encodingFilter</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>
         </filter>
         <filter-mapping>
             <filter-name>encodingFilter</filter-name>
             <url-pattern>/*</url-pattern>
         </filter-mapping>
         <!-- SpringMVC控制器 -->
         <servlet>
             <servlet-name>dispatcherServlet</servlet-name>
             <!-- 主要就是DispatcherServlet这个servlet起到分发的作用，对请求进行控制分发 -->
             <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
             <init-param>
                 <!-- 每个springmvc项目都要一个springmvc项目配置位置，下面配置springmvc配置文件的路径 -->
                 <param-name>contextConfigLocation</param-name>
                 <param-value>classpath*:springMVC-servlet.xml</param-value>
             </init-param>
             <!-- 当容器启动时立即启动 -->
             <load-on-startup>1</load-on-startup>
         </servlet>
         <servlet-mapping>
             <servlet-name>dispatcherServlet</servlet-name>
             <!-- 下面配置springmvc的过滤分发请求类型，可以是/ 或者*.action等 -->
             <url-pattern>/</url-pattern>
         </servlet-mapping>
       
     </web-app>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">
         <!-- 定义要扫描 controller的包-->
         <context:component-scan base-package="wormday.springmvc.helloworld" />
      
      
         <!-- 配置视图解析器 如何把handler 方法返回值解析为实际的物理视图 -->
         <!--指定视图解析器-->
         <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
             <!-- 视图的路径 -->
             <property name="prefix" value="/WEB-INF/jsp/"/>
             <!-- 视图名称后缀  -->
             <property name="suffix" value=".jsp"/>
         </bean>
      
     </beans>indexcontoller类
    package wormday.springmvc.helloworld;
      
     import javax.servlet.http.HttpSession;
      
     import org.springframework.stereotype.Controller;
      
     import org.springframework.web.bind.annotation.RequestMapping;
      
     @Controller
     @RequestMapping("/test")  
     public class IndexController {
      
         @RequestMapping("/index")  
         public String say() {
            System.out.print();
             return "home";
         }
     }UserController类
    package wormday.springmvc.helloworld;
      
     import java.util.Map;
      
     import javax.servlet.http.HttpSession;
      
     import org.springframework.stereotype.Controller;
     import org.springframework.ui.Model;
     import org.springframework.web.bind.annotation.RequestMapping;
     import org.springframework.web.bind.annotation.SessionAttributes;
     import org.springframework.web.servlet.ModelAndView;
      
     import wormday.springmvc.pojo.Address;
     import wormday.springmvc.pojo.User;
     @Controller
     @RequestMapping("/user")
     @SessionAttributes(value= {"user"},types= {String.class})
     public class UserController {
         @RequestMapping("/form")
         public String form() {
             return "form";
         }
         @RequestMapping("/save")
         public String save(User user) {
             System.out.print(user);
             return "success";
         }
         @RequestMapping("/edit")
         public ModelAndView edit(HttpSession session) {
             User user = new User();
             user.setUsername("helen");
             user.setPassword("123");
             user.setAge(12);
             user.setEmail("[e-mail]");
             
             Address address = new Address();
             address.setProvince("anhui");
             address.setCity("haha");
             
             user.setAddress(address);
             
             ModelAndView mv = new ModelAndView();
             mv.setViewName("form");
             mv.addObject("user", user);
             return mv;
         }
         @RequestMapping("/edit1")
         public String edit1(Map<String,Object> map) {
             User user = new User();
             user.setUsername("helen111");
             user.setPassword("123");
             user.setAge(12);
             user.setEmail("[e-mail]");
             
             Address address = new Address();
             address.setProvince("jiangsu");
             address.setCity("hah");
             
             user.setAddress(address);
             map.put("user",user);
             
             return "form";
         }
         @RequestMapping("/edit2")
         public String edit2(Model model) {
             User user = new User();
             user.setUsername("helen111");
             user.setPassword("123");
             user.setAge(12);
             user.setEmail("[e-mail]");
             
             Address address = new Address();
             address.setProvince("jiangsu");
             address.setCity("hah");
             
             user.setAddress(address);
             model.addAttribute("user",user);
             model.addAttribute("strvalue","gp1701");
             model.addAttribute("intvalue",1701);
             return "form";
         }
     }Address类
    package wormday.springmvc.pojo;
      
     public class Address {
         private String province;
         public String getProvince() {
             return province;
         }
         public void setProvince(String province) {
             this.province = province;
         }
         public String getCity() {
             return city;
         }
         public void setCity(String city) {
             this.city = city;
         }
         private String city;
         public Address() {
             super();
         }
         @Override
         public String toString() {
             return "Address [province=" + province + ", city=" + city + "]";
         }
         
         
     }user类
    package wormday.springmvc.pojo;
      
     public class User {
         public User() {
             super();
             // TODO Auto-generated constructor stub
         }
         private String username;
         private String password;
         private String email;
         private Integer age;
         private Address address;
         public String getUsername() {
             return username;
         }
         public void setUsername(String username) {
             this.username = username;
         }
         public String getPassword() {
             return password;
         }
         public void setPassword(String password) {
             this.password = password;
         }
         public String getEmail() {
             return email;
         }
         public void setEmail(String email) {
             this.email = email;
         }
         public Integer getAge() {
             return age;
         }
         public void setAge(Integer age) {
             this.age = age;
         }
         public Address getAddress() {
             return address;
         }
         public void setAddress(Address address) {
             this.address = address;
         }
         @Override
         public String toString() {
             return "User [username=" + username + ", password=" + password + ", email=" + email + ", age=" + age
                     + ", address=" + address + "]";
         }
             
         
     }form.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>
     ${sessionScope.strvalue}
     ${sessionScope.intvalue}
     <form action="save" method="post">
     <label for="">用户名:<input type="text" name="username" value="${RequestScope.user.username}"/></label>
     <label for="">密码:<input type="text" name="password" value="${user.password}"/></label>
     <label for="">年龄:<input type="text" name="age" value="${sessionScope.user.age}"/></label>
     <label for="">邮箱:<input type="text" name="email" value="${user.email}"/></label>
     <label for="">省份:<input type="text" name="address.province" value="${user.address.province}"/></label>
     <label for="">城市:<input type="text" name="address.city" value="${user.address.city}"/></label>
     <button>登录</button>
     </form>
     </body>
     </html>运行结果