Hello,
I am using PDFBox v2.0.8
I am getting java.lang.NullPointerException for few PDF documents, when I
use ' pdfStripper.getText(document)'. But this works well for few PDF
documents.
Please find below the related code for reference.
/*Code*/
File file = new File("E:/Temcat.pdf");
PDDocument document = PDDocument.load(file);
PDFTextStripper pdfStripper = new PDFTextStripper();
int pages = document.getNumberOfPages();
for(int i=1; i<=pages; i++){
pdfStripper.setStartPage(i);
pdfStripper.setEndPage(i);
try {
text = pdfStripper.getText(document);
System.out.println(text);
} catch (Exception e) {
e.printStackTrace();
}
}
Also, please find attached the Stack Trace.
Kindly let me know where this is going wrong.
Help will be appreciated.
Thanks,
Siddharth Naik
java.lang.NullPointerException
at java.util.ArrayDeque.addLast(ArrayDeque.java:244)
at java.util.ArrayDeque.add(ArrayDeque.java:418)
at
org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:174)
at
org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:169)
at
org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:169)
at
org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.<init>(PDPageTree.java:159)
at
org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.<init>(PDPageTree.java:153)
at org.apache.pdfbox.pdmodel.PDPageTree.iterator(PDPageTree.java:123)
at
org.apache.pdfbox.text.PDFTextStripper.processPages(PDFTextStripper.java:314)
at
org.apache.pdfbox.text.PDFTextStripper.writeText(PDFTextStripper.java:266)
at
org.apache.pdfbox.text.PDFTextStripper.getText(PDFTextStripper.java:227)
at
com.ietm.service.impl.PdfServiceImpl.extractIndex(PdfServiceImpl.java:165)
at
com.ietm.service.impl.PdfServiceImpl.pdfManager(PdfServiceImpl.java:108)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:153)
at
com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:85)
at
com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:58)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at com.liferay.portal.spring.aop.RetryAdvice.invoke(RetryAdvice.java:46)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.service.ServiceContextAdvice.invoke(ServiceContextAdvice.java:40)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
at
com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127)
at
com.liferay.portal.spring.aop.ServiceBeanAopProxy.invoke(ServiceBeanAopProxy.java:173)
at com.sun.proxy.$Proxy972.pdfManager(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
com.liferay.portal.jsonwebservice.JSONWebServiceActionImpl._invokeActionMethod(JSONWebServiceActionImpl.java:404)
at
com.liferay.portal.jsonwebservice.JSONWebServiceActionImpl.invoke(JSONWebServiceActionImpl.java:76)
at
com.liferay.portal.jsonwebservice.action.JSONWebServiceInvokerAction._executeStatement(JSONWebServiceInvokerAction.java:380)
at
com.liferay.portal.jsonwebservice.action.JSONWebServiceInvokerAction.invoke(JSONWebServiceInvokerAction.java:125)
at
com.liferay.portal.jsonwebservice.JSONWebServiceServiceAction.getJSON(JSONWebServiceServiceAction.java:69)
at com.liferay.portal.struts.JSONAction.execute(JSONAction.java:76)
at com.liferay.portal.servlet.JSONServlet.service(JSONServlet.java:63)
at
com.liferay.portal.jsonwebservice.JSONWebServiceServlet.service(JSONWebServiceServlet.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:119)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:188)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142)
at
com.liferay.portal.security.sso.ntlm.internal.servlet.filter.NtlmPostFilter.processFilter(NtlmPostFilter.java:107)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:188)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142)
at
com.liferay.portal.servlet.filters.uploadservletrequest.UploadServletRequestFilter.processFilter(UploadServletRequestFilter.java:93)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142)
at
com.liferay.portal.servlet.filters.authverifier.AuthVerifierFilter.processFilter(AuthVerifierFilter.java:170)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142)
at
com.liferay.portal.servlet.filters.jsoncontenttype.JSONContentTypeFilter.processFilter(JSONContentTypeFilter.java:42)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142)
at
com.liferay.portal.sharepoint.SharepointFilter.processFilter(SharepointFilter.java:88)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112)
at
com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142)
at
com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:260)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:188)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at
org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at
org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at
org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at
org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:394)
at
com.liferay.portal.servlet.filters.urlrewrite.UrlRewriteFilter.processFilter(UrlRewriteFilter.java:65)
at
com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:168)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:168)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:188)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at
com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:115)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
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:141)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
13:58:08,116 ERROR [http-nio-8080-exec-3][JSONWebServiceServiceAction:97]
java.lang.NullPointerException
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