1.在Spring中注释配置bean，出现提示“”通配符的匹配很全面, 但无法找到元素 'context:component-scan' 的声明“”
应添加完整的 约束文件
<?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: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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
2.在添加完约束文件后，仍然会报错，提示“”nested exception is java.lang.NoClassDefFoundError: org/springframework/aop/“”，原因是缺少了2个Jar
（1）spring-aop-4.0.5.RELEASE.jar
（2）spring-aspects-4.0.5.RELEASE.jar
