Question

Servlet代码：

response.reset();
response.setContentType("application/pdf");
response.setHeader("Cache-control", "private");
response.setHeader("Pragma", "no-cache");
response.setDateHeader("Expires", 0);                                
response.setHeader("Content-Disposition","attachment;filename=\"test.pdf\"" );
response.setContentLength(baos.size());
ServletOutputStream os =response.getOutputStream();
baos.writeTo(os);
os.flush();
os.close();

Javascript客户端代码：

var request = new XMLHttpRequest(); 
var url = "http://localhost:800/WebApplication2/JSONDecode";
var method = "POST";
var async = true;
request.open(method, url, async);
request.setRequestHeader("Content-Type", "application/x-www-form-    urlencoded; charset=utf-8");
request.onreadystatechange = function() {
if(request.readyState == 4 && request.status == 200) {
alert(request.response);
window.open(request.response,"_blank");
}}
request.send("json=" + json);

在警告框中返回：

%PDF-1.4
%����
1 0 obj
<</ColorSpace/DeviceRGB/Subtype/Image/Height 1960/Filter/FlateDecode       /Type/XObject/Width 1040/Length 651582/BitsPerComponent 8>>stream
x���wY�������}�}o�xﵹ]Uݕ��$I �o \br ��

我希望浏览器将其识别为pdf。我看了一遍，但看不出我做错了什么。浏览器页面从服务器发出错误400消息。

Answer 1

想出来，所以考虑到我以为我会发布的问题。不得不使用getParams从指向pdf流的链接加载它。似乎运作良好，但如果任何人得到了更好的答案。

var rpdf = request.response;
if(request.readyState == 4 && request.status == 200) {
var getParams=jQuery('#createPO').serialize();
getParams=jQuery.trim(getParams);
getParams='http://myserver.com/WebApp/Servlet?'+getParams;
document.location=getParams;}

将其放入onreadystatechange函数。

来自http响应的Pdf无法在浏览器上打开

1 个答案: