第一个springMVC例子
主要目的是熟悉intellij的web项目操作和springMVC的基本概念
具体操作如下：
1.创建intellij idea web module 
然后填写module名 点击确认 module创建完毕
2.在module的web-WEB-INF下新建 classes和lib文件夹
2.修改项目的配置 点击file->Project Struture 修改Modules下的paths 修改完毕点击OK
3.配置tomcat 点击run->edit configurations
点绿色的十字图标 创建tomcat并配置
4.首先配置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_3_1.xsd"
version="3.1">
<!--配置dispatcherservlet 以及mapping-->
<servlet>
<servlet-name>mvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
5.配置mvc-servelet
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
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-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="com.jsu.mvc" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<!-- 这个配置是配置JSP页面的位置，按照你自己的配置来配 -->
<!--jsp文件夹需要自己手动创建-->
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
</beans>
6.在jsp目录下新建hello.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>hello mvc</title>
</head>
<body>
${msg }
</body>
</html>7.在src中编写controller类
@Controller
public class HelloController {
@RequestMapping(value="/hello",method = RequestMethod.GET)
public String printWelcome(ModelMap model) {
model.addAttribute("msg", "Spring 3 MVC Hello World");
return "hello";
}
}最后进行测试
第一个小demo到此结束！
