在 ArtemisMQ 的队列上设置过滤器时出错
Error while setting filter on queue in ArtemisMQ
我在尝试通过 ArtemisMQ 配置在队列上配置过滤器时遇到问题 (broker.xml):
<address name="foo">
<multicast>
<queue name="filtered_foo">
<durable>true</durable>
<filter string="bar <> 42"/>
</queue>
</multicast>
</address>
尝试启动代理时出现错误:
[Fatal Error] :207:30: The value of attribute "string" associated with an element type "filter" must not contain the '<' character.
Exception in thread "main" org.xml.sax.SAXParseException; lineNumber: 207; columnNumber: 30; The value of attribute "string" associated with an element type "filter" must not contain the '<' character.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:257)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
at org.apache.activemq.artemis.utils.XMLUtil.readerToElement(XMLUtil.java:90)
at org.apache.activemq.artemis.utils.XMLUtil.stringToElement(XMLUtil.java:55)
at org.apache.activemq.artemis.core.config.FileDeploymentManager.readConfiguration(FileDeploymentManager.java:76)
at org.apache.activemq.artemis.integration.FileBroker.start(FileBroker.java:68)
at org.apache.activemq.artemis.cli.commands.Run.execute(Run.java:82)
at org.apache.activemq.artemis.cli.Artemis.internalExecute(Artemis.java:149)
at org.apache.activemq.artemis.cli.Artemis.execute(Artemis.java:97)
at org.apache.activemq.artemis.cli.Artemis.execute(Artemis.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.activemq.artemis.boot.Artemis.execute(Artemis.java:129)
at org.apache.activemq.artemis.boot.Artemis.main(Artemis.java:49)
如果我使用相同的过滤器字符串为消费者设置选择器,它会起作用:
auto consumer = session->createConsumer("foo::filtered_foo", "bar <> 42");
根据 Artemis 文档,配置的语法必须与选择器的语法相同。有什么问题吗?
这里的问题是 filter
是在 XML 中定义的,XML 有自己的允许字符和不允许字符的规则。简而言之,您的 XML 无效。试试这个:
<filter string="bar <> 42"/>
通过转义 <
字符,XML 应该可以正确解析。
我在尝试通过 ArtemisMQ 配置在队列上配置过滤器时遇到问题 (broker.xml):
<address name="foo">
<multicast>
<queue name="filtered_foo">
<durable>true</durable>
<filter string="bar <> 42"/>
</queue>
</multicast>
</address>
尝试启动代理时出现错误:
[Fatal Error] :207:30: The value of attribute "string" associated with an element type "filter" must not contain the '<' character.
Exception in thread "main" org.xml.sax.SAXParseException; lineNumber: 207; columnNumber: 30; The value of attribute "string" associated with an element type "filter" must not contain the '<' character.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:257)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
at org.apache.activemq.artemis.utils.XMLUtil.readerToElement(XMLUtil.java:90)
at org.apache.activemq.artemis.utils.XMLUtil.stringToElement(XMLUtil.java:55)
at org.apache.activemq.artemis.core.config.FileDeploymentManager.readConfiguration(FileDeploymentManager.java:76)
at org.apache.activemq.artemis.integration.FileBroker.start(FileBroker.java:68)
at org.apache.activemq.artemis.cli.commands.Run.execute(Run.java:82)
at org.apache.activemq.artemis.cli.Artemis.internalExecute(Artemis.java:149)
at org.apache.activemq.artemis.cli.Artemis.execute(Artemis.java:97)
at org.apache.activemq.artemis.cli.Artemis.execute(Artemis.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.activemq.artemis.boot.Artemis.execute(Artemis.java:129)
at org.apache.activemq.artemis.boot.Artemis.main(Artemis.java:49)
如果我使用相同的过滤器字符串为消费者设置选择器,它会起作用:
auto consumer = session->createConsumer("foo::filtered_foo", "bar <> 42");
根据 Artemis 文档,配置的语法必须与选择器的语法相同。有什么问题吗?
这里的问题是 filter
是在 XML 中定义的,XML 有自己的允许字符和不允许字符的规则。简而言之,您的 XML 无效。试试这个:
<filter string="bar <> 42"/>
通过转义 <
字符,XML 应该可以正确解析。