我有一个生成PDF的动作类。该contentType适当地设定。

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;
   }
}

我action 通过Ajax调用来称呼它。我不知道将流传输到浏览器的方法。我尝试了几件事，但没有任何效果。

$.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));
    }
});

上面给出了错误：

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