Download and open pdf file using Ajax

I have an action class that generates a pdf. The contentType is set appropriately.

public class MyAction extends ActionSupport 
{
   public String execute() {
    ...
    ...
    File report = signedPdfExporter.generateReport(xyzData, props);

    inputStream = new FileInputStream(report);
    contentDisposition = "attachment="" + report.getName() + """;
    contentType = "application/pdf";
    return SUCCESS;
   }
}

I call this action through an Ajax call. I don't know the way to deliver this stream to browser. I tried a few things but nothing worked.

$.ajax({
    type: "POST",
    url: url,
    data: wireIdList,
    cache: false,
    success: function(response)
    {
        alert('got response');
        window.open(response);
    },
    error: function (XMLHttpRequest, textStatus, errorThrown) 
    {
        alert('Error occurred while opening fax template' 
              + getAjaxErrorString(textStatus, errorThrown));
    }
});

The above gives the error:

Your browser sent a request that this server could not understand.

---

You don't necessarily need Ajax for this. Just an <a> link is enough if you set the content-disposition to attachment in the server side code. This way the parent page will just stay open, if that was your major concern (why would you unnecessarily have chosen Ajax for this otherwise?). Besides, there is no way to handle this nicely acynchronously. PDF is not character data. It's binary data. You can't do stuff like $(element).load() . You want to use completely new request for this. For that <a href="pdfservlet/filename.pdf">pdf</a> is perfectly suitable.

To assist you more with the server side code, you'll need to tell more about the language used and post an excerpt of the code attempts.

---

这是我如何得到这个工作

$.ajax({
  url: '<URL_TO_FILE>',
  success: function(data) {
    var blob=new Blob([data]);
    var link=document.createElement('a');
    link.href=window.URL.createObjectURL(blob);
    link.download="<FILENAME_TO_SAVE_WITH_EXTENSION>";
    link.click();
  }
});

---

I don't really think that any of the past answers spotted out the problem of the original poster. They all presume a GET request while the poster was trying to POST data and get a download in response.

In the course of searching for any better answer we found this jQuery Plugin for Requesting Ajax-like File Downloads.

In its "heart" it creates a "temporary" HTML form containing the given data as input fields. This form is appended to the document and posted to the desired URL. Right after that the form is removed again:

jQuery('<form action="'+ url +'" method="'+ (method||'post') +'">'+inputs+'</form>')
    .appendTo('body').submit().remove()

Update Mayur's answer looks pretty promising and very simple in comparison to the jQuery plug-in I referred to.

链接地址: http://www.djcxy.com/p/36446.html

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