不从远程索引或提取文档 (.pdf .doc)

Question

我正在使用 Solr 3.1、Apache Tika 0.9 和 Solrnet 0.3.1 来索引 文档，如 .doc 和 .pdf 文件。

我已成功使用此方法在本地索引并提取文档 但是

Startup.Init<Article>("http://k9server:8080/solr");
        ISolrOperations<Article> solr = ServiceLocator.Current.GetInstance <ISolrOperations<Article>>();
        string filecontent = null;
        using(var file = File.OpenRead(@"D:\\solr.doc")){
                    var response = solr.Extract(new ExtractParameters(file, "abcd1") {
                        ExtractOnly  = true,
                        ExtractFormat = ExtractFormat.Text,
            });
            filecontent = response.Content;
        }
        solr.Add(new Article() {
                ID  = "36",
                EMAIL = "1234",
                COMMENTS = filecontent,
                PRO_ID = 256
        });
        // commit to the index
        solr.Commit();

我面临使用相同代码远程提取或索引文档的问题，我收到错误：

The remote server returned an error: (500) Internal Server Error. 
SolrNet.Exceptions.SolrConnectionException was unhandled

消息

Apache Tomcat/6.0.32 - Error report HTTP Status 500 - org.apache.poi.poifs.filesystem.POIFSFileSystem.getRoot()Lorg/apache/poi/poifs/filesystem/DirectoryNode;

java.lang.NoSuchMethodError: org.apache.poi.poifs.filesystem.POIFSFileSystem.getRoot()Lorg/apache/poi/poifs/filesystem/DirectoryNode;
    at org.apache.tika.parser.microsoft.SummaryExtractor.parseSummaryEntryIfExists(SummaryExtractor.java:65)
    at org.apache.tika.parser.microsoft.SummaryExtractor.parseSummaries(SummaryExtractor.java:57)
    at org.apache.tika.parser.microsoft.OfficeParser.parse(OfficeParser.java:164)
    at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:197)
    at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:197)
    at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:135)
    at org.apache.solr.handler.extraction.ExtractingDocumentLoader.load(ExtractingDocumentLoader.java:196)
    at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:55)
    at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
    at org.apache.solr.core.RequestHandlers$LazyRequestHandlerWrapper.handleRequest(RequestHandlers.java:238)
    at org.apache.solr.core.SolrCore.execute(SolrCore.java:1360)
    at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356)
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
    at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
    at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
    at java.lang.Thread.run(Unknown Source)

消息

org.apache.poi.poifs.filesystem.POIFSFileSystem.getRoot()Lorg/apache/poi/poifs/filesystem/DirectoryNode;    
    java.lang.NoSuchMethodError: org.apache.poi.poifs.filesystem.POIFSFileSystem.getRoot()Lorg/apache/poi/poifs/filesystem/DirectoryNode;
            at org.apache.tika.parser.microsoft.SummaryExtractor.parseSummaryEntryIfExists(SummaryExtractor.java:65)
            at org.apache.tika.parser.microsoft.SummaryExtractor.parseSummaries(SummaryExtractor.java:57)
            at org.apache.tika.parser.microsoft.OfficeParser.parse(OfficeParser.java:164)
            at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:197)
            at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:197)
            at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:135)
            at org.apache.solr.handler.extraction.ExtractingDocumentLoader.load(ExtractingDocumentLoader.java:196)
            at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:55)
            at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
            at org.apache.solr.core.RequestHandlers$LazyRequestHandlerWrapper.handleRequest(RequestHandlers.java:238)
            at org.apache.solr.core.SolrCore.execute(SolrCore.java:1360)
            at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356)
            at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
            at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
            at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
            at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
            at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
            at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
            at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
            at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
            at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
            at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
            at java.lang.Thread.run(Unknown Source)

描述

The server encountered an internal error (org.apache.poi.poifs.filesystem.POIFSFileSystem.getRoot()Lorg/apache/poi/poifs/filesystem/DirectoryNode;

java.lang.NoSuchMethodError: org.apache.poi.poifs.filesystem.POIFSFileSystem.getRoot()Lorg/apache/poi/poifs/filesystem/DirectoryNode;
    at org.apache.tika.parser.microsoft.SummaryExtractor.parseSummaryEntryIfExists(SummaryExtractor.java:65)
    at org.apache.tika.parser.microsoft.SummaryExtractor.parseSummaries(SummaryExtractor.java:57)
    at org.apache.tika.parser.microsoft.OfficeParser.parse(OfficeParser.java:164)
    at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:197)
    at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:197)
    at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:135)
    at org.apache.solr.handler.extraction.ExtractingDocumentLoader.load(ExtractingDocumentLoader.java:196)
    at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:55)
    at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
    at org.apache.solr.core.RequestHandlers$LazyRequestHandlerWrapper.handleRequest(RequestHandlers.java:238)
    at org.apache.solr.core.SolrCore.execute(SolrCore.java:1360)
    at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356)
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
    at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
    at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
    at java.lang.Thread.run(Unknown Source)
) that prevented it from fulfilling this request.
  Source=SolrNet
  StackTrace:
       at SolrNet.Impl.SolrConnection.PostStream(String relativeUrl, String contentType, Stream content, IEnumerable`1 parameters)
       at SolrNet.Commands.ExtractCommand.Execute(ISolrConnection connection)
       at SolrNet.Impl.SolrBasicServer`1.Send(ISolrCommand cmd)
       at SolrNet.Impl.SolrBasicServer`1.SendAndParseExtract(ISolrCommand cmd)
       at SolrNet.Impl.SolrBasicServer`1.Extract(ExtractParameters parameters)
       at SolrNet.Impl.SolrServer`1.Extract(ExtractParameters parameters)
       at SolrNetSample.Program.Main(String[] args) in E:\TestProject\SolrNetSample\SolrNetSample\SolrNetSample\Program.cs:line 38
       at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: System.Net.WebException
       Message=The remote server returned an error: (500) Internal Server Error.
       Source=System
       StackTrace:
            at System.Net.HttpWebRequest.GetResponse()
            at HttpWebAdapters.Adapters.HttpWebRequestAdapter.GetResponse()
            at SolrNet.Impl.SolrConnection.GetResponse(IHttpWebRequest request)
            at SolrNet.Impl.SolrConnection.PostStream(String relativeUrl, String contentType, Stream content, IEnumerable`1 parameters)

Answer 1

你的远程服务器在类路径上有两个不同版本的 Apache POI，这就是为什么你会看到你看到的异常。

你应该删除旧版本的 POI，只留下 SOLR / Tika 附带的新 jar。请参阅 POI 常见问题解答，了解如何识别额外的 jar（如果找不到）它。

Answer 2

如果它适用于您的本地 Solr 实例，但不适用于另一个实例，则另一个实例可能未正确配置。

从堆栈跟踪来看，POI 库似乎不正确（可能是版本错误）。确保从 Solr 3.1.0 发行版复制所有 Tika JAR。