springMVC注解优化
2016-06-20 15:33
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1. 新建web project
2. 添加jar
3. 改写web.xml, 注意spring-servlet.xml的名字
4. 写 springAnnotation-servlet.xml , 第一处优化 <mvc:annotation-driven/> 代替引入2个bean
5. 新建包 com.tgb.web.controller.annotation, 新建类user2Controller.java
第二处优化: 注意加注解的方式, 类注解和方法注解
6. 根据spring-servlet.xml设置, 在/WEB-INF/jsp/下新建 annotation.jsp
7. IE端访问:
显示结果:
2. 添加jar
3. 改写web.xml, 注意spring-servlet.xml的名字
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" 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_3_0.xsd"> <display-name></display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>springMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:config/springAnnotation-servlet.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springMVC</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
4. 写 springAnnotation-servlet.xml , 第一处优化 <mvc:annotation-driven/> 代替引入2个bean
<?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" xmlns:mvc="http://www.springframework.org/schema/mvc" 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 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> <!-- 注解扫描包 --> <context:component-scan base-package="com.tgb.web.controller.annotation" /> <!-- 开启注解 --> <mvc:annotation-driven/> <!-- 静态资源访问 --> <mvc:resources location="/img/" mapping="/img/**"/> <mvc:resources location="/js/" mapping="/js/**"/> <mvc:resources location="/css/" mapping="/css/**"/> <!-- ViewResolver 视图解析器 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> </beans>
5. 新建包 com.tgb.web.controller.annotation, 新建类user2Controller.java
第二处优化: 注意加注解的方式, 类注解和方法注解
package com.tgb.web.controller.annotation; import javax.servlet.http.HttpServletRequest; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; @Controller @RequestMapping("/user2") public class User2Controller { @RequestMapping("/addUser") public String addUser(HttpServletRequest request){ String result = "this is addUser---------优化版"; request.setAttribute("result", result); return "/annotation"; } @RequestMapping("/delUser") public String delUser(HttpServletRequest request){ String result = "this is delUser---------优化版"; request.setAttribute("result", result); return "/annotation"; } @RequestMapping("/toUser") public String toUser(){ return "/annotation"; } }
6. 根据spring-servlet.xml设置, 在/WEB-INF/jsp/下新建 annotation.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'annotation.jsp' starting page</title> </head> <body> <h> annotation 注解1 </h> <br> <div> ${result } </div> </body> </html>
7. IE端访问:
http://localhost:8080/springMVC4/user2/addUser
http://localhost:8080/springMVC4/user2/addUser
http://localhost:8080/springMVC4/user2/toUser
显示结果:
annotation 注解1 this is addUser---------
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