日期:2014-05-17  浏览次数:20911 次

springMVC+注解模式问题
web.xml
Java code

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
    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_2_5.xsd">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
    <display-name>Spring Annotation MVC Sample</display-name>
  
  <!-- spring服务层配置文件 -->
  <context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/applicationContext.xml</param-value>
  </context-param>
  
  <!-- spring容器启动监听器 -->
  <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  
  <!-- springMVC的servlet,它将加载WEN-INF/annomvc-servlet.xml的配置文件,启动springMVC模块 -->
  <servlet>
      <servlet-name>annomvc</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      <load-on-startup>2</load-on-startup>
  </servlet>
  
  <servlet-mapping>
      <servlet-name>annomvc</servlet-name>
      <url-pattern>*.html</url-pattern>
  </servlet-mapping>
  
</web-app>



annomvc-servlet.xml
Java code

<?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"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans    
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd   
    http://www.springframework.org/schema/context    
    http://www.springframework.org/schema/context/spring-context-2.5.xsd">   
        
    <!-- 对entity包中所有类进行扫描,以完成bean创建和自动依赖注入功能 -->
    <context:annotation-config/>
    <context:component-scan base-package="com.test.entity"/>
    <context:component-scan base-package="com.test.dao"/>
    <context:component-scan base-package="com.test.service"/>
    <context:component-scan base-package="com.test.controller"/>
    
    <!-- 启动springMVC注解功能 完成请求注解和注解POJO映射 -->
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"></bean>
    
    <!-- 对模型视图名称的解析,在模型视图名称添加前后缀 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>
    
    <!--<bean id="UserinfoDAO" class="com.test.dao.UserinfoDAOImpl"/>-->
    <!--<bean id="UserinfoService" class="com.test.service.UserinfoService"></bean>-->
</beans>



applicationContext里只有数据源和sessionfactory的bean。省略了,请问,为什么如果将annomvc-servlet.xml里2个被注释掉的bean的任意一个的注释去掉,启动服务器就会报错?