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.xsdhttp://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 >