Question

在我的任务中，我必须下载一个文件，它将在我的项目文件夹中，它正在工作而不使用servlet我的意思是当我使用普通的java类时它的工作但当我正在使它servlet它不工作时请任何人帮助我在这里..这是我的代码和SalarySlip是我的项目中的一个文件夹，我手动创建..

我更新了错误消息

   public class main extends HttpServlet
     {
   public void doGet(HttpServletRequest request, HttpServletResponse response) 
      throws ServletException, java.io.IOException
  {
  try

     {

      Document document = new Document();

        PdfWriter writer = PdfWriter.getInstance(document,
            new FileOutputStream("D:/test/ReadPdf.pdf"));
        document.open();
        PdfReader reader = new PdfReader("SalarySlip/pivot.pdf");
        int n = reader.getNumberOfPages();
        PdfImportedPage page;
        // Go through all pages
        for (int i = 1; i <= n; i++) {
          // only page number 2 will be included

            page = writer.getImportedPage(reader, i);
            Image instance = Image.getInstance(page);
            document.add(instance);

        }
        document.close();

          }

  catch (Exception e) 
    {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
   }

    } 
   <body>
  <form name = "form" method="get" action="main">
   <input type="submit" value="login" >
  </body>

显示错误消息：

   New/pivot.pdf not found as file or resource.
    at  com.itextpdf.text.io.RandomAccessSourceFactory.
      createByReadingToMemory(RandomAccessSourceFactory.java:248)
          at  com.itextpdf.text.io.RandomAccessSourceFactory.
      createBestSource(RandomAccessSourceFactory.java:173)
      at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:219)
     at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:207)
   at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:197)
   at com.journaldev.servlet.main.doGet(main.java:63)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
   at org.apache.catalina.core.ApplicationFilterChain.         internalDoFilter(ApplicationFilterChain.java:305)
     at org.apache.catalina.core.ApplicationFilterChain
   .doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.
  invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.
    invoke(StandardContextValve.java:123)
     at org.apache.catalina.authenticator.
   AuthenticatorBase.invoke(AuthenticatorBase.java:502)
  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
  at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
  at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
  at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
  at org.apache.coyote.http11.AbstractHttp11Processor
 .process(AbstractHttp11Processor.java:1023)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.
   process(AbstractProtocol.java:589)
  at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)

Answer 1

@BeforeTest public void StartBrowser（）{ //在构建类中创建FirefoxProfile对象以访问其属性。 FirefoxProfile fprofile = new FirefoxProfile（）;

  //Set Location to store files after downloading.


  // this one is working 
  fprofile.setPreference("browser.download.dir","C:\\Users\\malik\\Desktop\\workspace\\payment\\CSVDownload");

但是需要像这样下载项目文件夹

fprofile.setPreference（ “browser.download.dir”， “.. \ CSVDownload \”）;

像这样我不知道我做了什么

  fprofile.setPreference("browser.download.folderList", 2);


  //Set Preference to not show file download confirmation dialogue using MIME types Of different file extension types.
  fprofile.setPreference("browser.helperApps.neverAsk.saveToDisk", 
    "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;"//MIME types Of MS Excel File.
    + "application/pdf;" //MIME types Of PDF File.
    + "application/vnd.openxmlformats-officedocument.wordprocessingml.document;" //MIME types Of MS doc File.
    + "text/plain;" //MIME types Of text File.
    + "text/csv"); //MIME types Of CSV File.
  fprofile.setPreference( "browser.download.manager.showWhenStarting", false );
  fprofile.setPreference( "pdfjs.disabled", true );
  //Pass fprofile parameter In webdriver to use preferences to download file.
  driver = new FirefoxDriver(fprofile);  
 }


 @Test
 public void OpenURL() throws InterruptedException{
  driver.get("http://only-testing-blog.blogspot.in/2014/05/login.html");

   //Download CSV File
  driver.findElement(By.xpath("//a[contains(.,'Download CSV File')]")).click();
  Thread.sleep(1000);

 }

 @AfterTest
 public void CloseBrowser() {  
  //driver.quit();  
 }

}

Answer 2

你的道路似乎错了

PdfReader reader = new PdfReader("SalarySlip/pivot.pdf");

将其更改为

PdfReader reader = new PdfReader("../SalarySlip/pivot.pdf");

如果它在WEB-CONTENT文件夹中

Answer 3

       String INPUTFILE =  "/Salary/pivot.pdf";
   PdfReader reader = new PdfReader(getServletContext().getRealPath(INPUTFILE));

它正在运作

如何从java中的项目文件夹下载pdf文件

3 个答案: