spring2.5 activemq5.2

最新推荐文章于 2025-07-30 19:53:42 发布

zhangxianwei

最新推荐文章于 2025-07-30 19:53:42 发布

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本文记录了Spring2.5与ActiveMQ5.2整合过程中遇到的名称空间不匹配问题及解决方案，包括调整XML配置文件中的名称空间和确保XSD文件路径正确。

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Spring2.5，Activemq5.2整合遇到的问题以及解决方法

关键字: activemq, spring

最近项目要用到JMS，因为用tomcat容器，所以采用了开源的ActiveMQ 消息中间件提供JMS支持。但是在spring2.5和activemq5.2集成的时候出现了点问题，首先列出activemq-import-beans.xml的内容：

Java代码

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:amq="http://activemq.org/config/1.0"
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.xsd
http://activemq.org/config/1.0 http://activemq.apache.org/schema/core/activemq.xsd">

<beans xmlns="http://www.springframework.org/schema/beans" 
  xmlns:amq="http://activemq.org/config/1.0"
  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.xsd
                                    http://activemq.org/config/1.0 http://activemq.apache.org/schema/core/activemq.xsd">

运行测试程序出现以下异常：

Java代码

Caused by: org.xml.sax.SAXParseException: TargetNamespace.1: Expecting namespace 'http://activemq.org/config/1.0', but the target namespace of the schema document is 'http://activemq.apache.org/schema/core'.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.reportSchemaError(XSDHandler.java:2525)
at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.constructTrees(XSDHandler.java:768)
at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.parseSchema(XSDHandler.java:569)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadSchema(XMLSchemaLoader.java:552)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.findSchemaGrammar(XMLSchemaValidator.java:2408)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1753)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:685)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:400)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2740)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:645)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:508)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:225)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283)
at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:396)
... 22 more

Caused by: org.xml.sax.SAXParseException: TargetNamespace.1: Expecting namespace 'http://activemq.org/config/1.0', but the target namespace of the schema document is 'http://activemq.apache.org/schema/core'.
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
	at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.reportSchemaError(XSDHandler.java:2525)
	at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.constructTrees(XSDHandler.java:768)
	at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.parseSchema(XSDHandler.java:569)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadSchema(XMLSchemaLoader.java:552)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.findSchemaGrammar(XMLSchemaValidator.java:2408)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1753)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:685)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:400)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2740)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:645)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:508)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
	at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:225)
	at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283)
	at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:396)
	... 22 more

通过阅读异常信息发现时XSD名称空间不对，所以赶紧打开activemq-core-5.2.0.jar/META-INF/目录中的spring.schemas查看，发现"http/://activemq.apache.org/schema/core/activemq-core.xsd=activemq.xsd"

于是乎又打开activemq.xsd查个究竟，以下为activemq5.2的activemq.xsd文件一部分：

Java代码

<xs:schema elementFormDefault='qualified'
targetNamespace='http://activemq.apache.org/schema/core'
xmlns:xs='http://www.w3.org/2001/XMLSchema'
xmlns:tns='http://activemq.apache.org/schema/core'>

<xs:schema elementFormDefault='qualified'
           targetNamespace='http://activemq.apache.org/schema/core'
           xmlns:xs='http://www.w3.org/2001/XMLSchema'
           xmlns:tns='http://activemq.apache.org/schema/core'>

噢，原来目标名称空间不一致啊。于是赶紧去改activemq-import-beans.xml文件的配置，修改如下：

Java代码

<?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:amq="http://activemq.apache.org/schema/core" //这个地方很关键，amq对应的XSD名称空间名称要和activemq.xsd的一致
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq.xsd">

<?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:amq="http://activemq.apache.org/schema/core"  //这个地方很关键，amq对应的XSD名称空间名称要和activemq.xsd的一致
xsi:schemaLocation=" 
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq.xsd">

呵呵，到这里以为问题已经搞定，但是运行测试后，又发现一个新的问题，异常信息如下：

Java代码

org.xml.sax.SAXParseException: schema_reference.4: Failed to read schema document 'http://activemq.apache.org/schema/core/activemq.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>.

org.xml.sax.SAXParseException: schema_reference.4: Failed to read schema document 'http://activemq.apache.org/schema/core/activemq.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>.

查看了异常信息后，发现可能是spring无法定位到http://activemq.apache.org/schema/core/activemq.xsd,于是又一次打开activemq-core-5.2.0.jar/META-INF的spring.schemas，内容如下：

Java代码

http/://activemq.org/config/1.0=activemq.xsd
http/://activemq.org/config/1.0/1.0.xsd=activemq.xsd
http/://activemq.apache.org/schema/core=activemq.xsd
http/://activemq.apache.org/schema/core/activemq-core.xsd=activemq.xsd

http/://activemq.org/config/1.0=activemq.xsd
http/://activemq.org/config/1.0/1.0.xsd=activemq.xsd
http/://activemq.apache.org/schema/core=activemq.xsd
http/://activemq.apache.org/schema/core/activemq-core.xsd=activemq.xsd

呵呵，发现问题了吗？初看没啥问题，但是仔细一看，噢，原来http/://activemq.apache.org/schema/core/activemq-core.xsd=activemq.xsd 与http://activemq.apache.org/schema/core/activemq.xsd 不匹配，呵呵，知道问题根源了，现在时解决办法，解决办法有两种：

第一种：修改activemq-import-beans.xml文件的“http://activemq.apache.org/schema/core/activemq.xsd ”这句为：http://activemq.apache.org/schema/core/activemq-core.xsd（这个就是activemq jar包中spring.schemas文件的最后一行，但是注意：http/://要改为http://)

第二种：在classpath目录中，新建META-INF/spring.schemas文件，然后增加一下内容：

Java代码

http/://activemq.apache.org/schema/core/activemq-core.xsd=activemq.xsd

http/://activemq.apache.org/schema/core/activemq-core.xsd=activemq.xsd

这个时候重新运行测试，发现一切OK。哈。。