Spring MVC入门示例

时间:2022-07-07 05:15:45

1、新建一个Java Web项目

2、导入jar包

Spring MVC入门示例

3、在WEB-INF下面建一个hello.jsp页面。

 <%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'hello.jsp' starting page</title>
</head> <body>
hello springmvc
</body>
</html>

4、配置web.xml文件

 <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet> <servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping> <welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

5、配置spring-mvc.xml文件

 <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd"> <context:component-scan base-package="com.proc"></context:component-scan> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/"/>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>

  InternalResourceViewResolver:视图解析器。根据Url地址遭到找到文件资源

    prefix:前缀

    suffix:后缀

6、配置控制器

 package com.proc;

 import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping; @Controller
public class Hello { @RequestMapping("/hello")
public String hello(){
System.out.println("hello springmvc");
return "hello";
}
}

  @RequetMapping注解作用是url映射

测试访问

Spring MVC入门示例