我正在研究Django项目。一切顺利,直到我创建了一个Ajax请求,将值从html页面发送到后端(views.py)。
当我使用Ajax发送数据时,我能够查看传递给views.py的值,它甚至可以到达render_to_response方法并显示我的页面,但会在终端中抛出损坏的管道错误。我没有看到任何类型的程序中断,但我想知道是否有办法防止此错误发生。我检查了其他回复。但到目前为止还没有运气。
当我尝试在刷新的页面上再次点击提交时,我收到此消息:
您要查找的页面使用了您输入的信息。返回该页面可能会导致您重复执行任何操作。你想继续吗? [提交] [取消]`
以下是转储:
Traceback (most recent call last):
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 34812)
----------------------------------------
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 284, in run
self.finish_response()
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 324, in finish_response
self.write(data)
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 403, in write
self.send_headers()
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 467, in send_headers
self.send_preamble()
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 385, in send_preamble
'Date: %s\r\n' % http_date()
File "/usr/lib/python2.7/socket.py", line 324, in write
self.flush()
File "/usr/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
Traceback (most recent call last):
File "/usr/lib/python2.7/SocketServer.py", line 284, in _handle_request_noblock
self.process_request(request, client_address)
File "/usr/lib/python2.7/SocketServer.py", line 310, in process_request
self.finish_request(request, client_address)
File "/usr/lib/python2.7/SocketServer.py", line 323, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 570, in __init__
BaseHTTPRequestHandler.__init__(self, *args, **kwargs)
File "/usr/lib/python2.7/SocketServer.py", line 640, in __init__
self.finish()
File "/usr/lib/python2.7/SocketServer.py", line 693, in finish
self.wfile.flush()
File "/usr/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
更新 这是我发送的代码:
$( document ).ready(function() {
$.csrftoken();
$("#submitdata").click(function(){
//values = [tmode, fmode, t_cool, t_heat, hold];
values = {
"tmode": tmode,
"fmode": fmode,
"t_cool": t_cool,
"t_heat": t_heat,
"hold": hold
};
var jsonText = JSON.stringify(values);
$.ajax({
url: "/submitdata/",
type: 'POST',
data: jsonText,
dataType: 'json',
success:function(data){
console.log(data.success);
},
complete:function(){
console.log('complete');
},
error:function (xhr, textStatus, thrownError){
console.log(thrownError);
console.log(obj);
}
});
});
});
这是我的views.py:
@login_required
def submitvalues(request):
#context = RequestContext(request)
if request.POST:
jsonvalues = json.loads(request.raw_post_data)
print jsonvalues
return HttpResponse(json.dumps(dict(status='updated')), mimetype="application/json")
我仍然面临同样的问题。有人可以帮我这个吗?
2014年5月28日编辑: 我刚刚弄清楚了管道破裂的原因。这是因为我没有发回Python的响应,只是期望页面自动刷新。我是所有这一切的新手,并花了一些时间来弄清楚为什么会这样。
答案 0 :(得分:22)
您还没有发布任何代码,但这可能是因为您在按钮提交时触发了Ajax请求但未阻止默认操作。所以发出了Ajax请求,但是当它返回数据时,浏览器仍然已经请求下一页,所以没有任何东西可以接收它。
答案 1 :(得分:0)
我通过添加以下内容解决了这个问题:
index out of range
因为我在发送帖子请求页面时发现了一些错误:
self.send_header("Access-Control-Allow-Origin", "*")
然后我得到了这个解决方案并解决了上述问题。