使用注解开发 | 学习笔记

开发者学堂课程【SpringMVC 框架入门：使用注解开发】学习笔记，与课程紧密联系，让用户快速学习知识。

课程地址：https://developer.aliyun.com/learning/course/22/detail/452

使用注解开发

内容介绍：

1. 导入jar包

2. Web.xml

3. Controller

4. Spring mvc的配置

l 导入jar包

commons-logging-1.1.1.jar

spring-aop-4.1.6.RELEASE.jar

spring-beans-4.1.6.RELEASE.jar

spring-context-4.1.6.RELEASE.jar

spring-context-support-4.1.6.RELEASE.jar spring-core-4.1.6.RELEASE.jar

spring-expression-4.1.6.RELEASE.jar

spring-web-4.1.6.RELEASE.jar

spring-webmvc-4.1.6.RELEASE.jar

l Web.xml

​<servlet>​

​<servlet-name>springmvc</servlet-name>​

​ ​

​<servlet-class>org.springframework.web.servlet.Dispatcher Servlet</servlet-class>​

​ ​

​<init-param>​

​<param-name>contextConfigLocation</param-name>​

​<param-value>classpath:mvc.xml</param-value>​

​</init-param>​

​ ​

​<load-on-startup>1</load-on-startup>​

​</servlet>​

​<servlet-mapping>​

​<servlet-name>springmvc</servlet-name>​

​<url-pattern>*.do</url-pattern>​

​</servlet-mapping>​

注意：红色配置指明mvc的配置文件位置（src/mvc.xml)

l Controller

​_@Controller​

​public class HelloController { ​

​_{@RequestMapping("/hello")}​

​public ModelAndView hello(HttpServletRequest reg, HttpServletResponse resp){ ​

​_{ModelAndView mv= new ModelAndView();}​

​_{//封装要显示到视图中的数据}​

​_{mv. addObject ("msg"," hello annotation");}​

​_//视图名​

​my. setViewName ("hello");// web-inf/ isp/ hello. isp ​

​_{return mv;}​

​_}​

​_}​

​​

l Spring mvc的配置

<?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://ww.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.xsd http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context.xsd">

​<!--配置渲染器 视图解析器​​-->​

​<bean id="jspViewResolver"​

​class="org.springframework.web.servlet.view.InternaLResource ViewResolver">​

​<property name="viewClass"​

​value="org.springframework.web.servlet.view.Jstlview"/>​

​<!--结果视图的前缀​​-->​

​<property name="prefix" value="/WEB-INF/isp/"/>​

​<!--结果视图的后缀​​-->​

​<property name="suffix" value=".jsp"/>​

​</bean>​

​<一扫描该包下的注解​​-->​

​< context: component- scan​

​base-package="cn.sxt.controller"/>​

​</ beans >​