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spring mvc 入门配置

 

 1. 把所需jar拷贝到工程目录下WEB-INF/lib

 2. 配置WEB.xml,配置前端控制器 org.springframework.web.servlet.DispatcherServlet

           <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:spring_config/applicationContext-mvc.xml</param-value>

         </init-param>

           </servlet>

           <servlet-mapping>

                <servlet-name>springmvc</servlet-name>

                <url-pattern>*.do</url-pattern>

           </servlet-mapping>

3.  创建spring mvc控制核心配置:applicationContext-mvc.xml              

      配置控制器

       <bean id="login" name="/login.do" class="com.beifeng.controller.LoginController"></bean>

      配置试图解析器

       <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

               <!-- 前缀 -->

               <property name="prefix" value="http://www.mamicode.com/jsp/"></property>

                <!-- 后缀 -->

                <property name="suffix" value="http://www.mamicode.com/.jsp"></property>

        </bean>

4.编写控制器类 LoginController 必须继承AbstractController 重写handleRequestInternal

    @Override

    protected ModelAndView handleRequestInternal(HttpServletRequest request,

            HttpServletResponse arg1) throws Exception {

        // TODO Auto-generated method stub

       

        String userName = request.getParameter("userName");

        String userPw = request.getParameter("userPw");

        System.out.println("------我是springMVC的控制器---------");

        System.out.println("账号:"+userName);

        System.out.println("账号:"+userPw);

       

        ModelAndView mav = new ModelAndView("index");

       

        //模拟调用Model

        if("admin".equals(userName) && "123".equals(userPw)){

            mav.addObject("message", "用户登录成功!");

        }else{

            mav.addObject("message", "账号或密码错误!");

        }

        return mav;

    }

  返回数据和试图  ModelAndView mav = new ModelAndView("index");    

        

 5. 编写JSP页面 显示数据

在jsp 界面中使用{$message}即可以显示message变量

spring mvc 入门配置