大致工作流程如下
样例
web.xml
<?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">
<!--1.注册DispatcherServlet-->
<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:【servLet-name 】 -servlet.xmi-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc-servlet.xml</param-value></init-param>
<!--启动级别-1-->
<load-on-startup>1</load-on-startup>
</servlet>
<!--/匹配所有的请求;(不包括.jsp )--><!--/*匹配所有的请求;(包括.jsp )-->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
spring.xml
<?xml version="1.0" encoding="GBK"?>
<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">
<!--
1、声明处理器映射器
目的:选择哪一个处理器来处理当前请求
-->
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<!--
2、声明处理器适配器
目的:调用处理器的处理请求的方法
-->
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
<!--视图解析器: DispatcherServlet给他的ModeLAndview
3、配置视图解析器目的:处理视图信息
-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="InternalResourceViewResolver">
<!--前缀-->
<property name="prefix" value="/jsp/"/>
<!--后缀-->
<property name="suffix" value=".jsp"/>
</bean>
<bean id="/hello" class="com.springMVC.controller.HelloController"/>
</beans>
实现controller接口
public class HelloController implements Controller {
@Override
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","HelloSpringMVC!");//封装要跳转的视图，放在ModeLAndview中
mv.setViewName("/hello");
//:/NEB - INF / jsp / heLLo.jsp
return mv;
}
}
hello.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
${msg}
</body>
</html>
注意点
在idea中，使用springMVC需要，创建lib目录导入依赖
