xml - 找不到元素 'context:annotation-config' 的声明

Question

Spring ，每当我写 <context:annotation-config/>在我的 spring.xml 中，我收到了这个错误:-

Exception in thread "main" org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 81 in XML document from class path resource [spring.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 81; columnNumber: 30; cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'context:annotation-config'.

而我spring.xml的内容是

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd"
xmlns:context="http://www.springframework.org/schema/context"
>

<bean id="circle" class="com.mysite.Circle">
</bean>

 ...

<context:annotation-config/>

谁能告诉我哪里出错了？？？？

Answer 1

您正在使用 XML 命名空间(在本例中为上下文)而没有声明它

把你的xml改成这样:

<?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"
       xsi:schemaLocation="
           http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-3.1.xsd">

您还引用了 http://www.springframework.org/schema/beans/spring-beans-4.0.xsd ，我认为不存在。