如何使Firefox处理与firefox-addon-sdk POST请求的结果？ [英] How to make Firefox handle the result of a POST request with firefox-addon-sdk?

问题描述

我想从我的插件发布图像到我的Servlet处理图像并返回一个PDF。该servlet工作。我只是不知道如何处理从我的插件得到的PDF。

$ p $ const $ request $ require（sdk / request ）。请求;
...
let req = request（{
url：http：// localhost：8090 / Whatever / PdfServlet，
content：params，
onComplete ：function（response）{
console.log（response.text）
}
}）;
req.post（）;

这里，object params 包含base64编码图像。一切正常，我可以看到控制台日志中的PDF流的开始。但是，如何让Firefox显示其打开/保存对话框，以便用户可以保存或查看PDF？

解决方案

这是一个解决方案：

  const querystring = require（'sdk / querystring'）; 
 const winUtils = require（'sdk / window / utils'）; 
 
 ... 
 let stringStream = Cc [@ mozilla.org/io/string-input-stream; 1]。 
 createInstance（Ci.nsIStringInputStream）; 
 stringStream.data = querystring.stringify（params）; 
让postData = Cc [@ mozilla.org/network/mime-input-stream; 1]。 
 createInstance（Ci.nsIMIMEInputStream）; 
 postData.addHeader（Content-Type，application / x-www-form-urlencoded）; 
 postData.addContentLength = true; 
 postData.setData（stringStream）; 
 winUtils.getMostRecentBrowserWindow（）。loadURI（http：// localhost：8090 / Whatever / PdfServlet，null，postData，null）; 
  

或者我可以打开一个新窗口，但是我不喜欢那个：

  winUtils.openDialog（{
 args：[http：// localhost：8090 / Whatever / PdfServlet，null，null，postData ] 
}）; 
  

I'd like to post images from my addon to my Servlet that processes the images and returns a PDF. The servlet works. I just don't know how to handle the resulting PDF from my addon.

const request= require("sdk/request").Request;
...
            let req= request({
                url: "http://localhost:8090/Whatever/PdfServlet",
                content: params,
                onComplete: function (response) {
                    console.log(response.text)
                }
            });
            req.post();

Here, object params contains the base64 encoded images. Everything works, I can see the beginning of the PDF stream in the console log. But how do I make Firefox show its open/save dialog so that the user can save or view the PDF?

解决方案

Here's a solution:

      const querystring= require('sdk/querystring');
      const winUtils= require('sdk/window/utils');

...
            let stringStream= Cc["@mozilla.org/io/string-input-stream;1"].
                   createInstance(Ci.nsIStringInputStream);
            stringStream.data= querystring.stringify(params);
            let postData= Cc["@mozilla.org/network/mime-input-stream;1"].
               createInstance(Ci.nsIMIMEInputStream);
            postData.addHeader("Content-Type", "application/x-www-form-urlencoded");
            postData.addContentLength = true;
            postData.setData(stringStream);
            winUtils.getMostRecentBrowserWindow().loadURI("http://localhost:8090/Whatever/PdfServlet", null, postData, null);

Or I could open a new window, but I didn't like that:

    winUtils.openDialog({
        args: ["http://localhost:8090/Whatever/PdfServlet", null, null, postData]
    });

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