匹配通配符是严格的，但找不到元素 'tx:annotation-driven' 'context:component-scan' 的声明

问题描述：

谁能找出下面的命名空间声明有什么问题?我已经提到了所有的命名空间并给出了对架构文件的引用.不确定还缺少什么.

Can anyone identify what is wrong with the namespace declaration below? I've mentioned all the namespaces and gave references to the schema files. Not sure what else is missing.

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

    <context:component-scan base-package="com.mypackage" />
    <context:annotation-config />
    <tx:annotation-driven />

</beans>

错误信息:

在这一行找到多个注释:- cvc-complex-type.2.4.c:匹配的通配符是严格的，但找不到元素tx:annotation-driven"的声明.- schema_reference.4:无法读取架构文档'http://www.springframework.org/schema/tx/spring-tx.xsd'，因为 1)找不到文件；2) 无法读取文件；3)文档的根元素不是 .

Multiple annotations found at this line: - cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'tx:annotation-driven'. - schema_reference.4: Failed to read schema document 'http://www.springframework.org/schema/tx/spring-tx.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.

答

我更喜欢 STS 而不是 Eclipse，这是重现问题的方式...

I prefer STS over Eclipse and this is how one can reproduce the problem...

我有一个带有 Spring 上下文依赖项的 Maven 项目:

I have a Maven project with a Spring context dependency:

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>betlista</groupId>
    <artifactId>tests.so.q34779551</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>SO-q34779551</name>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.2.4.RELEASE</version>
        </dependency>
    </dependencies>

</project>

当我现在在 src/main/resources 中创建 spring.xml 时，我遇到了同样的问题:

When I now create spring.xml in src/main/resources same as yours I have same problems:

schema_reference.4: Failed to read schema document 'http://www.springframework.org/schema/beans/spring-beans.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
schema_reference.4: Failed to read schema document 'http://www.springframework.org/schema/context/spring-context.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
schema_reference.4: Failed to read schema document 'http://www.springframework.org/schema/context/spring-context.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
schema_reference.4: Failed to read schema document 'http://www.springframework.org/schema/tx/spring-tx.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.

问题是，spring-tx 和 spring-context 不在依赖项中 - 添加后，错误已修复.

The problem is, that spring-tx and spring-context is not in dependencies - when added, error is fixed.

此答案中的更多详细信息.

匹配通配符是严格的，但找不到元素 'tx:annotation-driven' 'context:component-scan' 的声明

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