web.xml
<!-- spring读取配置文件 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:config/springAnnotation-core.xml</param-value> </context-param> <!--spring监听 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 配置springMVC --> <servlet> <servlet-name>springMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <!-- contextConfigLocation 是固定的 --> <param-name>contextConfigLocation</param-name> <!-- 配置读取路径--> <param-value>classpath*:config/springAnnotation-servlet.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springMVC</servlet-name> <!-- 配置拦截规则--> <url-pattern>/</url-pattern> </servlet-mapping>springAnnotation-core.xml
<beans> <!-- 配置相应的bean ，配置完就自动实例化，实例化对象可以通过注解调用，调用规则是id--> <bean id="UserManager" class="com.tgb.web.controller.annotation.UserManager"></bean> <!-- 或者通过以下的方法也可以，就是将bean写到一个xml文件中，这里调用那个文件,如下所示--> <!--<import resource="classpath*:com/tgb/web/controller/annotation/daoBean.xml"/>--> </beans>springAnnotation-servlet.xml
<!-- 注解扫描包 --> <context:component-scan base-package="com.tgb.web.controller.annotation" /> <!-- 开启注解 --> <mvc:annotation-driven/> <!--视图解析器--> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean>controller
@Controller public class User3Controller { //相当于IUser UserManager=new UserManager(); //IUser是个接口，UserManager是IUser接口的实现类，UserManager已经在配置文件配置bean了 //注解引入实例化对象 @Resource(name="UserManager") private IUser UserManager; @RequestMapping("/user/login") public String get(){ System.out.println(UserManager.login()); return "/success"; } }