1 <?xml version="1.0" encoding="UTF-8"?>
 2 <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
 5     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 6  <welcome-file-list>
 7     <welcome-file>hello.jsp</welcome-file>
 8   </welcome-file-list>
 9     <!-- 加载Spring容器配置 -->
10     <listener>
11         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
12     </listener>
13 
14     <!-- 设置Spring容器加载所有的配置文件的路径 -->
15     <context-param>
16         <param-name>contextConfigLocation</param-name>
17         <param-value>classpath*:config/applicationContext.xml</param-value>
18     </context-param>
19 
20     <!-- 配置SpringMVC核心控制器 -->
21     <servlet>
22         <servlet-name>springMVC</servlet-name>
23         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
24 
25         <init-param>
26             <param-name>contextConfigLocation</param-name>
27             <param-value>classpath*:config/springmvc-config.xml</param-value>
28         </init-param>
29         <!-- 启动加载一次 -->  
30         <load-on-startup>1</load-on-startup>
31     </servlet>
32 
33     <!--为DispatcherServlet建立映射 -->
34     <servlet-mapping>
35         <servlet-name>springMVC</servlet-name>
36         <url-pattern>/</url-pattern>
37     </servlet-mapping>
38 
39     <!-- 防止Spring内存溢出监听器 -->
40     <listener>
41         <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
42     </listener>
43 
44     <!-- 解决工程编码过滤器 -->
45     <filter>
46         <filter-name>encodingFilter</filter-name>
47         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
48         <init-param>
49             <param-name>encoding</param-name>
50             <param-value>UTF-8</param-value>
51         </init-param>
52         <init-param>
53             <param-name>forceEncoding</param-name>
54             <param-value>true</param-value>
55         </init-param>
56     </filter>
57 
58     <filter-mapping>
59         <filter-name>encodingFilter</filter-name>
60         <url-pattern>/*</url-pattern>
61     </filter-mapping>
62 </web-app>

<?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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd     
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-4.2.xsd">
        
    <!-- 自动扫描该包，SpringMVC会将包下用了@controller注解的类注册为Spring的controller -->
    <context:component-scan base-package="com.controller"/>
    <!-- 设置默认配置方案 -->
    <mvc:annotation-driven/>
    <!-- 使用默认的Servlet来响应静态文件 -->
    <mvc:default-servlet-handler/>
    <!-- 定义Spring MVC的拦截器 -->
    <!-- <mvc:interceptors>
        <mvc:interceptor>
            拦截所有请求
            <mvc:mapping path="/*"/>
            自定义判断用户权限的拦截类  
             <bean class="com.interceptor.AuthorizedInterceptor"/>
        </mvc:interceptor>
    </mvc:interceptors> -->
    <!-- 视图解析器  -->
     <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
        <!-- 前缀 -->
        <property name="prefix">
            <value>/WEB-INF/jsp/</value>
        </property>
        <!-- 后缀 -->
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>
     <!-- <bean id="multipartResolver"  
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
        上传文件大小上限，单位为字节（10MB）
        <property name="maxUploadSize">  
            <value>10485760</value>  
        </property>  
        请求的编码格式，必须和jSP的pageEncoding属性一致，以便正确读取表单的内容，默认为ISO-8859-1
        <property name="defaultEncoding">
            <value>UTF-8</value>
        </property>
    </bean> -->
    
</beans>

 1 package com.controller;
 2 
 3 import javax.servlet.http.HttpSession;
 4 
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.stereotype.Controller;
 7 import org.springframework.web.bind.annotation.RequestMapping;
 8 import org.springframework.web.bind.annotation.RequestParam;
 9 import org.springframework.web.servlet.ModelAndView;
10 
11 import com.entity.User;
12 import com.service.UserService;
13 
14 @Controller
15 public class UserControllers {
16     @Autowired
17     private UserService userService;
18     
19     @RequestMapping("/login")
20     public ModelAndView login(
21             @RequestParam("loginname") String loginname,
22             @RequestParam("password") String password,
23             HttpSession session,ModelAndView mv
24             ){
25         System.out.println("loginname:"+loginname);
26         System.out.println("password:"+password);
27         User user=userService.login(loginname,password);
28         if(user!=null) {
29             session.setAttribute("user_session",user);
30             mv.setViewName("redirect:/main");
31             System.out.println(user);
32             System.out.println("跳转成功");
33         }else {
34             mv.addObject("message", "登录名或密码错误!请重新输入");
35             mv.setViewName("forward:/loginForm");
36             System.out.println("跳转失败");
37         }
38         return mv;
39     }
40 }