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通过 Solr4.7.2 Search API 索引 xslx 扩展的 excel 表时出现异常。

org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [default] in context with path [/solr] threw exception [Filter execution threw an exception] with root cause
java.lang.NoClassDefFoundError: Could not initialize class org.apache.poi.openxml4j.opc.internal.unmarshallers.PackagePropertiesUnmarshaller
    at org.apache.poi.openxml4j.opc.OPCPackage.init(OPCPackage.java:154)
    at org.apache.poi.openxml4j.opc.OPCPackage.<init>(OPCPackage.java:141)
    at org.apache.poi.openxml4j.opc.Package.<init>(Package.java:54)
    at org.apache.poi.openxml4j.opc.ZipPackage.<init>(ZipPackage.java:99)
    at org.apache.poi.openxml4j.opc.OPCPackage.open(OPCPackage.java:221)
    at org.apache.tika.parser.pkg.ZipContainerDetector.detectOfficeOpenXML(ZipContainerDetector.java:194)
    at org.apache.tika.parser.pkg.ZipContainerDetector.detectZipFormat(ZipContainerDetector.java:134)
    at org.apache.tika.parser.pkg.ZipContainerDetector.detect(ZipContainerDetector.java:77)
    at org.apache.tika.detect.CompositeDetector.detect(CompositeDetector.java:61)
    at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:113)
    at org.apache.solr.handler.extraction.ExtractingDocumentLoader.load(ExtractingDocumentLoader.java:219)
    at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:74)
    at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
    at org.apache.solr.core.RequestHandlers$LazyRequestHandlerWrapper.handleRequest(RequestHandlers.java:241)
    at org.apache.solr.core.SolrCore.execute(SolrCore.java:1916)
    at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:768)
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:415)
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:205)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)

我的 tomcat 库中有 4 个与此 Excel 表相关的 Apache POI 罐子，它们是：poi-3.9-20121203.jar、poi-ooxml-3.9-20121203.jar、poi-ooxml-schemas-3.9-20121203.jar、poi -scratchpad-3.9-20121203.jar

我检查并发现了以不同方式支持扩展的不同版本的 POI Jars 的使用情况。

请提出一些解决此问题的方法。

4

1 回答 1

0

我有同样的问题，它是由两个 dom4j jar 引起的，一个在 tomcat/lib 中，另一个在 webapps/basic-services/WEB-INF/lib 解决方案是使用 maven 从我的应用程序依赖项中排除 dom4j

<dependency>
    <groupId>dom4j</groupId>
    <artifactId>dom4j</artifactId>
    <version>1.6.1</version>
    <scope>provided</scope>
</dependency>

我能够通过调查第一次出现此异常的堆栈跟踪来查明此问题，我发现以下内容：

Caused by: java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
    at org.dom4j.DocumentFactory.getInstance(DocumentFactory.java:97)
    at org.dom4j.tree.AbstractNode.<clinit>(AbstractNode.java:39)
于 2018-09-17T10:39:16.353 回答