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  1. Code line causing error
  2. ========================
  3. instance.createDocuments(pdfFile.getAbsolutePath(), "/home/user/tomcat8/tessdata/urkunde", list);
  4.  
  5. Tesseract and Leptonica version
  6. ================================
  7. user@ca7916e0c57b:~/tomcat8/tessdata$ /usr/bin/tesseract --version
  8. tesseract 3.04.01
  9. leptonica-1.73
  10. libgif 5.1.2 : libjpeg 8d (libjpeg-turbo 1.4.2) : libpng 1.2.54 : libtiff 4.0.6 : zlib 1.2.8 : libwebp 0.4.4 : libopenjp2 2.1.0
  11.  
  12. Ghostscript version
  13. ========================
  14. user@ca7916e0c57b:~/tomcat8/tessdata$ ghostscript -v
  15. GPL Ghostscript 9.18 (2015-10-05)
  16. Copyright (C) 2015 Artifex Software, Inc. All rights reserved.
  17.  
  18. Environment info
  19. ========================
  20. user@ca7916e0c57b:~/tomcat8/tessdata$ cat /etc/*-release
  21. DISTRIB_ID=Ubuntu
  22. DISTRIB_RELEASE=16.04
  23. DISTRIB_CODENAME=xenial
  24. DISTRIB_DESCRIPTION="Ubuntu 16.04.1 LTS"
  25. NAME="Ubuntu"
  26. VERSION="16.04.1 LTS (Xenial Xerus)"
  27. ID=ubuntu
  28. ID_LIKE=debian
  29. PRETTY_NAME="Ubuntu 16.04.1 LTS"
  30. VERSION_ID="16.04"
  31. HOME_URL="http://www.ubuntu.com/"
  32. SUPPORT_URL="http://help.ubuntu.com/"
  33. BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
  34. UBUNTU_CODENAME=xenial
  35.  
  36. Log:
  37. ====
  38. 11:08:06.537 [http-nio-8080-exec-1] ERROR net.sourceforge.tess4j.Tesseract - Invalid calling convention 63
  39. java.lang.IllegalArgumentException: Invalid calling convention 63
  40. at com.sun.jna.Native.createNativeCallback(Native Method)
  41. at com.sun.jna.CallbackReference.<init>(CallbackReference.java:239)
  42. at com.sun.jna.CallbackReference.getFunctionPointer(CallbackReference.java:413)
  43. at com.sun.jna.CallbackReference.getFunctionPointer(CallbackReference.java:395)
  44. at com.sun.jna.Function.convertArgument(Function.java:541)
  45. at com.sun.jna.Function.invoke(Function.java:305)
  46. at com.sun.jna.Library$Handler.invoke(Library.java:236)
  47. at com.sun.proxy.$Proxy89.gsapi_set_stdio(Unknown Source)
  48. at org.ghost4j.Ghostscript.initialize(Ghostscript.java:323)
  49. at net.sourceforge.tess4j.util.PdfUtilities.convertPdf2Png(PdfUtilities.java:103)
  50. at net.sourceforge.tess4j.util.PdfUtilities.convertPdf2Tiff(PdfUtilities.java:48)
  51. at net.sourceforge.tess4j.Tesseract.createDocuments(Tesseract.java:535)
  52. at net.sourceforge.tess4j.Tesseract.createDocuments(Tesseract.java:507)
  53. at de.conradt.core.Example.testOcr(Example.java:62)
  54. at de.conradt.core.Example.ocr(Example.java:35)
  55. at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  56. at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  57. at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  58. at java.lang.reflect.Method.invoke(Method.java:497)
  59. at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
  60. at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
  61. at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMeth
  62. od.java:114)
  63. at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAda
  64. pter.java:827)
  65. at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.
  66. java:738)
  67. at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
  68. at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
  69. at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
  70. at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
  71. at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
  72. at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
  73. at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
  74. at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
  75. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
  76. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
  77. at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
  78. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
  79. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
  80. at org.springframework.boot.web.filter.ApplicationContextHeaderFilter.doFilterInternal(ApplicationContextHeaderFilter.java:55)
  81. at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  82. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
  83. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
  84. at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:105)
  85. at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  86. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
  87. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
  88. at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
  89. at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  90. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
  91. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
  92. at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:89)
  93. at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  94. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
  95. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
  96. at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
  97. at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  98. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
  99. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
  100. at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
  101. at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  102. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
  103. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
  104. at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:107)
  105. at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  106. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
  107. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
  108. at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
  109. at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
  110. at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
  111. at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
  112. at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
  113. at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
  114. at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
  115. at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
  116. at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
  117. at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
  118. at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)
  119. at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
  120. at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
  121. at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  122. at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
  123. at java.lang.Thread.run(Thread.java:745)
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