報錯資訊摘要

1：WARN [localhost-startStop-1] - Exception encountered during context initialization - cancelling refresh attempt

2：org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'customerController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException:.....

3:Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.itheima.service.CustomerService cn.itheima.controller.CustomerController.customerService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [cn.itheima.service.CustomerService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

解決辦法  :加入以下監聽

<listener ><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

將這段加入web.xml中例如

<?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>crm0523</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  
   <listener ><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

 ...................