使用servlet在新窗口中打开pdf文件 [英] open pdf file in new window using servlet

问题描述

我正在通过servlet从我的web应用程序生成一个用于门户传递的pdf文件。我想在新窗口/选项卡中打开这个新生成的pdf，用户应该从servlet返回到应用程序。我如何在新窗口/选项卡中打开pdf？我从itext api生成pdf。我的servlet代码片段是：

  response.setHeader（Expires，0）; 
 response.setHeader（Cache-Control，must-revalidate，post-check = 0，precheck = 0）; 
 response.setHeader（Pragma，public）; 
 response.setContentType（application / pdf）; 
 response.setContentLength（baos.size（））; 
 OutputStream os = response.getOutputStream（）; 
 baos.writeTo（os）; 
 os.flush（）; 
 os.close（）; 
  

解决方案

如果您使用GET请求来创建servlet call

GET
将链接的目标设置为 target =_ blank

 < a href =/ url / to / servlettarget =_ blank/> 
  

POST

 < form method =postaction =url / to / servlet
 target =_ blank> 
  

所以浏览器会在新窗口/选项卡中创建一个新的GET / POST请求，然后设置头内容处置到内联渲染pdf内联，而不是提示下载窗口

I am generating a pdf file for gate pass from my web application through servlet. I want to open this newly generated pdf in new window/tab and user should come back to the application from servlet. How can i open pdf in new window/tab? I am generating pdf from itext api. My servlet code snippet is:

        response.setHeader("Expires", "0");
        response.setHeader("Cache-Control","must-revalidate, post-check=0,precheck=0");
        response.setHeader("Pragma", "public");
        response.setContentType("application/pdf");
        response.setContentLength(baos.size());
        OutputStream os = response.getOutputStream();
        baos.writeTo(os);
        os.flush();
        os.close(); 

解决方案

In case if you are using GET request to make a servlet call

GET set the target of link to target="_blank"

<a href="/url/to/servlet" target="_blank"/>

POST

<form method="post" action="url/to/servlet"
  target="_blank">

so browser will make a new GET/POST request in new window/tab and then set the header Content-disposition to inline to render pdf inline instead of prompting a download window

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