记录第一次用ideaU实现springMVc

使用ideaU创建maven项目，创建普通maven项目，不需要使用模板。

然后右键点击项目，选择add framework support，勾上web的支持。

 

编辑web.xml

    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--关联一个springmvc的配置文件：[serlvet-name]-server.xml-->
        <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>

    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

编辑springmvc-servlet.xml，注意这里的格式可以到spring的配置中复制

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>


    <!-- 视频解析器：dispatcherServlet给他的mmodelAndView-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <bean id="/hello" class="com.lee.controller.HelloController"/>

</beans>

编写控制器HelloController

package com.lee.controller;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class HelloController implements Controller {
    @SuppressWarnings("all")
    @Override
    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
        // ModelAndView 模型和视图
        ModelAndView mv = new ModelAndView();
        //    封装对象,放在ModelAndView中。Model
        mv.addObject("msg", "HelloSpringMvc");
        mv.setViewName("hello");
        return mv;
    }
}

 注意，因为添加的web框架支持中，是没有生成lib，即是依赖的，所以必须要点开ideaU的项目结构，创建lib文件夹，然后把依赖添加进去