匹配的通配符是严格的，但找不到元素“context:component-scan”的声明

Posted 2023-04-18

【中文标题】匹配的通配符是严格的，但找不到元素“context:component-scan”的声明

【英文标题】：The matching wildcard is strict, but no declaration can be found for element 'context:component-scan'

【发布时间】：2013-10-07 11:56:28

【问题描述】：

我正在使用 Spring 3.2.3.RELEASE 和 maven 来拉取依赖项。在 Eclipse 中构建项目时出现以下错误：

Exception in thread "main" org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 17 in XML document from class path resource [META-INF/spring/application-context.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 17; columnNumber: 64; cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'context:component-scan'.

我的 appication-context.xml 有以下内容：

<?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-3.2.xsd
    http://www.springframework.org/schema/context/
  http://www.springframework.org/schema/context/spring-context-3.2.xsd">

  <context:component-scan base-package="com.example" />

我知道我正在提取正确的 jar 文件，因为我的 Maven 依赖项显示：

在 META-INF/sping.schemas 中，我可以看到我的 jar 中有正确的模式声明：

http\://www.springframework.org/schema/context/spring-context-2.5.xsd=org/springframework/context/config/spring-context-2.5.xsd
http\://www.springframework.org/schema/context/spring-context-3.0.xsd=org/springframework/context/config/spring-context-3.0.xsd
http\://www.springframework.org/schema/context/spring-context-3.1.xsd=org/springframework/context/config/spring-context-3.1.xsd
http\://www.springframework.org/schema/context/spring-context-3.2.xsd=org/springframework/context/config/spring-context-3.2.xsd
http\://www.springframework.org/schema/context/spring-context.xsd=org/springframework/context/config/spring-context-3.2.xsd

我也看过这些无济于事：

Can't load spring 3 schemas

The matching wildcard is strict, but no declaration can be found for element 'tx:annotation-driven'

No declaration can be found for element 'context:component-scan'

The matching wildcard is strict, but no declaration can be found for element 'context:component-scan

请帮忙，这让我发疯了.... :(

【参考方案1】：

对于初学者，您应该修复您的依赖项。您正在混合 Spring 3.2.3 和 2.0.6 罐子（这是等待发生的问题）。

旁边你的声明是错误的http://www.springframework.org/schema/context/必须是http://www.springframework.org/schema/context。

【讨论】：

天哪，谢谢；甚至没有看到；删除最后的“/”就可以了......将继续整理这些依赖关系。

同样的东西。我们必须在末尾复制/粘贴与此 / 相同的教程