SpringMvc配置

1.新建一个moudle，添加web支持

2.导入SpringMvc依赖

3.配置web.xml，注册DispatcherServlet

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    
    <servlet>
        <servlet-name>springmvcservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        
        <init-param>
            <param-name>contextConfigLocationparam-name>
            <param-value>classpath:springmvc-servlet.xmlparam-value>
        init-param>
        
        <load-on-startup>1load-on-startup>
    servlet>

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

web-app>

4.编写springmvc-servlet.xml的配置文件，名称要求按照官方来

<?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
       http://www.springframework.org/schema/beans/spring-beans.xsd">

beans>

5.添加处理映射器

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

6.添加处理器适配器

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

7.添加视图解析器

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="InternalResourceViewResolver">
    
    <property name="prefix" value="/WEB-INF/jsp/"/>
    
    <property name="suffix" value=".jsp"/>
bean>

8.编写我们要操作业务Controller ，要么实现Controller接口，要么增加注解；需要返回一个ModelAndView，装数据，封视图

package com.kuang.controller;

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

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

//注意：这里我们先导入Controller接口
public class HelloController implements Controller {

    public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
        //ModelAndView 模型和视图
        ModelAndView mv = new ModelAndView();

        //封装对象，放在ModelAndView中。Model
        mv.addObject("msg","HelloSpringMVC1!，我是成博");
        //封装要跳转的视图，放在ModelAndView中
        mv.setViewName("hello"); //: /WEB-INF/jsp/hello.jsp
        return mv;
    }
    
}

9.将自己的类交给SpringIOC容器，注册bean

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

10.写要跳转的jsp页面，显示ModelandView存放的数据，以及我们的正常页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    


    ${msg}