Spingmvc 基础学习（二）—— mvc注解配置

spring mvc常用的还是注解模式，也基本看不到其他模式的使用，所以我也只对注解模式进行介绍。

配置web.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>springMVC_01</display-name>
   <filter>
  <filter-name>character</filter-name>
  <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  <init-param>
  <param-name>encoding</param-name>
  <param-value>UTF-8</param-value>
  </init-param>
  </filter>
  <filter-mapping>
  <filter-name>character</filter-name>
  <url-pattern>/*</url-pattern>
  </filter-mapping>
  <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:springMVC.xml</param-value>
  </init-param>
  </servlet>
  <servlet-mapping>
  <servlet-name>springmvc</servlet-name>
  <url-pattern>*.do</url-pattern>
  </servlet-mapping> 
</web-app>

主要代码为<servlet></servlet>和<servlet-mapping></servlet-mapping>标签的内容，该配置会对所有.do的请求进行拦截，日常使用上更多的是对所有请求进行拦截，需要将<url-pattern></url-pattern>标签的内容"*.do"改成"/"

配置springMVC配置文件

<?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:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
		http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 
		http://www.springframework.org/schema/mvc 
		http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd 
		http://www.springframework.org/schema/context 
		http://www.springframework.org/schema/context/spring-context-3.1.xsd 
		http://www.springframework.org/schema/aop 
		http://www.springframework.org/schema/aop/spring-aop-3.1.xsd 
		http://www.springframework.org/schema/tx 
		http://www.springframework.org/schema/tx/spring-tx-3.1.xsd">
		<!-- 添加注解扫描!!! -->
		<context:component-scan base-package="cn.itcast"></context:component-scan>
		<!-- 添加注解映射器 -->
		<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>
		<!-- 注解适配器 -->
		<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean>
		<!-- 视图解析器 -->
		<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsps/"></property>
		<property name="suffix" value=".jsp"></property>
		</bean>		
</beans>

可以用<mvc:annotation-driven />代替添加注解映射器和添加适配器，这会默认配置注解映射器和注解适配器等bean

这样Spring mvc 的注解配置就配置完成了，当然还需要导入jar包，不再做过多介绍