SpringMVC实现步骤

1.将jar包依赖导入项目和tomcat

2.建立视图显示的jsp文件

3.修改web.xml文件

1. 添加前端控制器（DispathcherServlet）

<servlet>
	<servlet-name>springmvc</servlet-name>
	<servlet-class>org.springframework.web.servlet.DispatcherServlet</s			ervlet-class>
</servlet>
        <servlet-mapping>
            <servlet-name>springmvc</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>

2. 给前端控制器绑定Spring配置文件、配置与服务器并列启动

        <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:springmvc_servlet.xml</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
        </servlet>

4.Springmvc配置文件

1. 处理器映射器
2. 处理器适配器
3. 视图解析器

5.创建Controller类返回视图解析

public class MyController implements Controller {
    @Override
    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
        ModelAndView modelAndView = new ModelAndView("demo");
        modelAndView.addObject("msg","result");
        return modelAndView;
    }
}

6.创建Controller类返回视图解析

将controller类返回的视图交给处理器处理

 <bean id="/demo" class="com.rl.controller.MyController"></bean>

id命名为文件名 交由处理器处理视图显示