Java學習筆記(十六)-SpringMvc

**

一個SpringMvc程序

1.在IDEA創建SpringMvc項目

2.修改Web.Xml配置文件

3.編輯dispatcher-servlet.xml

<?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">
    <bean id="simpleUrlHandlerMapping"
          class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <!-- /hello 路徑的請求交給 id 爲 helloController 的控制器處理-->
                <prop key="/hello">helloController</prop>
            </props>
        </property>
    </bean>
    <bean id="helloController" class="controller.HelloController"></bean>
</beans>

4創建controller類

package controller;

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

public class HelloController implements Controller{
    @Override
    public ModelAndView handleRequest(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse) throws Exception {
        ModelAndView mav = new ModelAndView("index.jsp");
        mav.addObject("message", "Hello Spring MVC");
        return mav;
    }
}

5修改index.jsp

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

<h1>${message}</h1>
``
`6選擇本地tomcat服務器
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20191019191310320.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzI4NDEz,size_16,color_FFFFFF,t_70)
7.瀏覽器輸入localhost/hello
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20191019191434966.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzI4NDEz,size_16,color_FFFFFF,t_70)
**