spring 3.0 mvc 基于注解 笔记2
spring3 的基于注释的mvc可以简化我们的xml配置
1.配置web.xml
2.编写Spring配置文件config.xml
配置定义文件和之前略有不同
<context:component-scan base-package="mvc"></context:component-scan>
定义了启动时需要检查的注释信息的包路径
3.包含注释的Controller类
4.简单的显示页面 /WEB-INF/page/hello.jsp
现在我们就可以访问以下hello.do
1.配置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"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>mvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/classes/spring/*.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet>刘冬明(yjtuuje@hotmail.com); <servlet-mapping> <servlet-name>mvc</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app>
2.编写Spring配置文件config.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" 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 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-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="mvc"></context:component-scan> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/page/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
配置定义文件和之前略有不同
<context:component-scan base-package="mvc"></context:component-scan>
定义了启动时需要检查的注释信息的包路径
3.包含注释的Controller类
package mvc; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; //定义该类是作为Controller进行处理 @Controller public class HelloWorld {
//定义访问路径hello.do 请求方法类型 @RequestMapping(value="hello",method=RequestMethod.GET) public String helloWorld(){
System.out.println("HelloWorld!"); return "hello"; } }
4.简单的显示页面 /WEB-INF/page/hello.jsp
<html> <head> <base href="<%=basePath%>"> <title>My JSP hello.jsp starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> HelloWorld<br> </body> </html>
现在我们就可以访问以下hello.do