Java 堆栈跟踪正则表达式

Question

我需要匹配 Java 堆栈跟踪如果它是这样的堆栈跟踪

Exception in thread "main" java.lang.IllegalStateException: A book has a null property
        at com.example.myproject.Author.getBookIds(Author.java:38)
        at com.example.myproject.Bootstrap.main(Bootstrap.java:14)
Caused by: java.lang.NullPointerException
        at com.example.myproject.Book.getId(Book.java:22)
        at com.example.myproject.Author.getBookIds(Author.java:36)

我可以匹配^[[:space:]]+(at|\.{3})\b|^Caused by: 问题是我需要匹配整个堆栈跟踪，我得到的跟踪如下所示：

2019-06-14 15:07:08,142 ThreadPoolAsyncTaskExecutor::Thread 65 ERROR bamboo_user 906x78989x1 vg7ahz 192.168.181.28 /rest/plugins/1.0/bg.nemetschek.jsd.advance-customer-reports-key [o.e.g.b.e.i.dependencies.startup.DependencyWaiterApplicationContextExecutor] Unable to create application context for [bg.nemetschek.jsd.advance-customer-reports], unsatisfied dependencies: none
org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from URL [bundle://293.0:0/META-INF/spring/atlassian-plugins-component-imports.xml]; nested exception is java.lang.IllegalStateException: The bundle is uninstalled.
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:414)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)
        at org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext.loadBeanDefinitions(OsgiBundleXmlApplicationContext.java:170)
        at org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext.loadBeanDefinitions(OsgiBundleXmlApplicationContext.java:140)
        at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)
        at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:609)
        at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.access0(AbstractDelegatedExecutionApplicationContext.java:60)
        at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.run(AbstractDelegatedExecutionApplicationContext.java:242)
        at org.eclipse.gemini.blueprint.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:85)
        at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.startRefresh(AbstractDelegatedExecutionApplicationContext.java:220)
        at org.eclipse.gemini.blueprint.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.stageOne(DependencyWaiterApplicationContextExecutor.java:224)
        at org.eclipse.gemini.blueprint.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.refresh(DependencyWaiterApplicationContextExecutor.java:177)
        at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.refresh(AbstractDelegatedExecutionApplicationContext.java:157)
        at org.eclipse.gemini.blueprint.extender.internal.activator.LifecycleManager.run(LifecycleManager.java:207)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalStateException: The bundle is uninstalled.
        at org.apache.felix.framework.Felix.getBundleResources(Felix.java:1624)
        at org.apache.felix.framework.BundleImpl.getResources(BundleImpl.java:661)
        at org.eclipse.gemini.blueprint.util.BundleDelegatingClassLoader.getResources(BundleDelegatingClassLoader.java:185)
        at org.springframework.core.io.support.PropertiesLoaderUtils.loadAllProperties(PropertiesLoaderUtils.java:177)
        at org.springframework.beans.factory.xml.DefaultNamespaceHandlerResolver.getHandlerMappings(DefaultNamespaceHandlerResolver.java:155)
        at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins$Plugin.resolve(NamespacePlugins.java:77)
        at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.operate(NamespacePlugins.java:209)
        at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.operate(NamespacePlugins.java:205)
        at org.eclipse.gemini.blueprint.extender.internal.support.LazyBundleRegistry.apply(LazyBundleRegistry.java:159)
        at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.doResolve(NamespacePlugins.java:205)
        at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.resolve(NamespacePlugins.java:169)
        ... 2 filtered
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.eclipse.gemini.blueprint.context.support.TrackingUtil$OsgiServiceHandler.invoke(TrackingUtil.java:106)
        at com.sun.proxy.$Proxy605.resolve(Unknown Source)
        at org.eclipse.gemini.blueprint.context.support.DelegatedNamespaceHandlerResolver.resolve(DelegatedNamespaceHandlerResolver.java:55)
        at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1406)
        at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1401)
        at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:168)
        at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:138)
        at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:94)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:508)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:392)
        ... 20 more

实际问题是 ... 20 more 或 ... 2 filtered 没有匹配，我无法匹配整个轨迹，因此我可以将其作为一个字符串。

Answer 1

试试正则表达式：^(?:Caused by:|\s+(?:at|\.{3})).*$

Demo

Answer 2

一个选项可能是匹配以日期开头的字符串。然后重复所有不以日期开头或 at 的行。然后确保至少匹配 1 行 at 然后匹配所有行直到下一个日期：

^\d{4}-\d{2}-\d{2}.*(?:\n(?!(?:\d{4}-\d{2}-\d{2}|\h+at)).*)*\n\h+at\h+.*(?:\n(?!\d{4}-\d{2}-\d{2}).*)*

说明

^ 字符串开头
\d{4}-\d{2}-\d{2}.* 匹配类似日期的模式，后跟 0+ 次除换行符之外的任何字符
(?:非捕获组
- \n(?!(?:\d{4}-\d{2}-\d{2}|\h+at)).* 匹配一个换行符，然后断言右边的不是类似日期的模式或 1+ 个水平空白字符后跟 at。如果是这种情况，则匹配 0+ 次除换行符以外的任何字符
)*关闭非捕获组并重复0+次
\n\h+at\h+.* 匹配以 at 开头并被 1+ 个水平空白字符包围的行
(?:\n(?!\d{4}-\d{2}-\d{2}).*)* 匹配所有不以类日期模式开头的行

Regex demo

在 Java 中注意双重转义反斜杠：

String regex = "^\d{4}-\d{2}-\d{2}.*(?:\n(?!(?:\d{4}-\d{2}-\d{2}|\h+at)).*)*\n\h+at\h+.*(?:\n(?!\d{4}-\d{2}-\d{2}).*)*";

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