我正在使用apache Tika 1.0.使用ForkParser,每当我解析pdf文件时,我得到以下NoClassDefFoundException:
java.lang.NoClassDefFoundError: org/apache/tika/fork/MemoryURLStreamHandler$Record
at org.apache.tika.fork.MemoryURLStreamHandler.createURL(MemoryURLStreamHandler.java:46)
at org.apache.tika.fork.ClassLoaderProxy.findResource(ClassLoaderProxy.java:73)
at java.lang.ClassLoader.getResource(ClassLoader.java:977)
at org.apache.log4j.helpers.Loader.getResource(Loader.java:96)
at org.apache.log4j.LogManager.<clinit>(LogManager.java:105)
at org.apache.log4j.Logger.getLogger(Logger.java:104)
at org.apache.commons.logging.impl.Log4JLogger.getLogger(Log4JLogger.java:289)
at org.apache.commons.logging.impl.Log4JLogger.<init>(Log4JLogger.java:109)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.commons.logging.impl.LogFactoryImpl.createLogFromClass(LogFactoryImpl.java:1116)
at org.apache.commons.logging.impl.LogFactoryImpl.discoverLogImplementation(LogFactoryImpl.java:914)
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:604)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:336)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:310)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:685)
at org.apache.pdfbox.pdfparser.BaseParser.<clinit>(BaseParser.java:58)
at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1087)
at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1053)
at org.apache.tika.parser.pdf.PDFParser.parse(PDFParser.java:80)
at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:242)
at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:242)
at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:120)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.tika.fork.ForkServer.call(ForkServer.java:136)
at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
检查jar表明在tika-core jar文件中存在MemoryURLStreamHandler $ Record.当我使用AutoDetectParser而不是ForkParser时,我能够从文件中提取元数据而没有任何问题,但需要能够约束Tika内存使用,因此我需要使用ForkParser.如何获得pdf解析与Tika的ForkParser一起使用？
这是一段代码片段,直到解析的地方:
public static FileAnalysis analyze(File …