<%
OutputStream output=response.getOutputStream();
response.setContentType("application/pdf");
response.setHeader("Content-Disposition", "inline; filename=details.pdf");
try{
Document document = new Document();
PdfWriter writer=PdfWriter.getInstance(document, output);
document.open();
XMLWorkerHelper worker = XMLWorkerHelper.getInstance();
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/a", "root", "root");
Statement st=con.createStatement( ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
List arrlist = new ArrayList();
ResultSet rs=st.executeQuery("Select * from user_start1");
while(rs.next()){
arrlist.add(rs.getString("data"));
}
for(int i=0;i<12;i++){
String str =(String) arrlist.get(i);
System.out.println(str);
worker.parseXHtml(writer, document, new StringReader("helloworld"));
}
document.close();
writer.flush();
writer.close();
output.close();
}catch(IOException e){e.printStackTrace();}
%>
抛出错误
SEVERE: Servlet.service() for servlet [jsp] in context with path [/chieflegis] threw exception [ExceptionConverter: java.io.IOException: The document has no pages.] with root cause
java.io.IOException: The document has no pages.
at com.itextpdf.text.pdf.PdfPages.writePageTree(PdfPages.java:113)
at com.itextpdf.text.pdf.PdfWriter.close(PdfWriter.java:1217)
at com.itextpdf.text.pdf.PdfDocument.close(PdfDocument.java:807)
at com.itextpdf.text.Document.close(Document.java:416)
at org.apache.jsp.print_jsp._jspService(print_jsp.java:112)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
我以前使用过相同的 xmlworker 但从未出现过任何错误。甚至 hello world 也没有显示。请帮助
其他答案都很好。这是一个替代方案。
一般来说，为了防止这种错误，当文档不包含对内容有意义的数据时经常发生这种错误，即使document.open() and document.newPage()被调用后，即使在将其他页面标记到该文档中之后，您也可以在打开文档时添加一个空块，以确保库永远不会将其视为空。例如
document.open();
document.add(new Chunk("")); // << this will do the trick.
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