初学者对于Spring框架的难度：引用Jar包不全，或者不正确；
1、运行界面
2、客户端页面
index.jsp 的代码
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>Spring 3.0 MVC demo</title> </head> <body> <a href="hello.html">Say Hello1</a> <a href="hello2.html">Say Hello2</a> <a href="1/hello.html">Say Hello3</a> </body> </html>
/jsp/hello.jsp的代码
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>link</title>
</head>
<body>
This is Hello!<br>
${message}
</body>
</html>
3、配置文件代码：
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <display-name>spring3MVC</display-name> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>*.html</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
spring-servlet.xml 的代码
<?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" 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="net.spring.controller" /> <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
4、后台Java文件代码 HelloWorldController.java
package net.spring.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; @Controller public class HelloWorldController { @RequestMapping("/hello2") public ModelAndView helloWorld() { String message = "1"; System.out.println(message); return new ModelAndView("hello", "message", message); } @RequestMapping("/hello.html") public ModelAndView helloWorld2() { String message = "2"; System.out.println(message); return new ModelAndView("hello", "message", message); } @RequestMapping("/1/hello.html") public ModelAndView helloWorld3() { String message = "3!"; System.out.println(message); return new ModelAndView("hello", "message", message); } }
5、引用类库
至此可以运行程序，但是Log的Jar包引用不全，会有警告。