从jQuery请求数据获取一个空的ImmutableMultiDict对象 [英] Getting an empty ImmutableMultiDict object from jQuery request data
本文介绍了从jQuery请求数据获取一个空的ImmutableMultiDict对象的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
upload.html
< HTML>
< head>
< title>上传档案Ajax< / title>
< script type =text / javascriptsrc =https://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js>< / script>
< script type =text / javascript>
$(function#()#
$('#upload-file-btn')。click(function(){
var form_data = new FormData($('#upload-file' );
form_data.append('file',$('input [type = file]')[0] .files [0]);
console.log(form_data)
$ .ajax({
url:'/ uploadajax',
data:form_data,
type:'POST',
contentType:false,
cache :false,
processData:false,
async:false,
success:function(data){
console.log('Success!');
// console.log(data);
},
});
});
});
< / script>
< / head>
< body>
< form action =name =upload-fileid =upload-filemethod =postenctype =multipart / form-data>
< fieldset>
< label for =file>选择一个文件< / label>
< input name =fileid =filetype =file>
< / fieldset>
< fieldset>
< button id =upload-file-btntype =button>上传< / button>
< / fieldset>
< / form>
< / body>
< / html>
烧瓶
app = Flask(__ name__)
@ app.route('/')
def index():
return render_template(upload.html)
$ b @ app.route('/ uploadajax',methods = ['POST'])
def upldfile():
logging.debug('request.method :%s',request.method)
logging.debug('request.files:%s',request.files)
logging.debug('request.args:%s',request.args )
logging.debug('request.form:%s',request.form)
logging.debug('request.values:%s',request.values)
logging.debug ('request.headers:%s',request.headers
logging.debug('request.data:%s',request.data)
$ b $ upload_files = request.files.getlist file)
logging.debug('upload_files:%s',upload_files)
file_val = request.files
for k,v在file_val.items()中:logging.debug('key:%s - value:%s',k,v)
#request.m ethod =='POST':file_val = request.files ['file']
return render_template('upload.html')
$ b $ if if __name__ =='__main__':
app.run(host ='127.0.0.1',debug = True,port = 2345,use_reloader = True)
这是日志数据
016-05-03 00:05:30,500 - root - DEBUG - request.method:POST
2016-05-03 00:05:30,500 - root - DEBUG - request.files:ImmutableMultiDict([])
2016-05-03 00:05:30,500 - root - DEBUG - request.args:ImmutableMultiDict([])
2016-05-03 00:05:30,501 - root - DEBUG - request.form:ImmutableMultiDict([])
2016-05-03 00 :05:30,501 - root - DEBUG - request.values:CombinedMultiDict([ImmutableMultiDict([]),ImmutableMultiDict([])]])
2016-05-03 00:05:30,501 - root - DEBUG - request。头文件:Referer:http://127.0.0.1:2345/
原产地:http://127.0.0.1:2345
内容长度:368
用户代理:Mozilla / 5.0。 ...
康涅狄格州保持活跃
X-Requested-With:XMLHttpRequest
主机:127.0.0.1:2345
接受:* / *
接受语言:en-US,en; q = 0.8
Content-Type:false
Accept-Encoding:gzip,deflate2016-05-03 03:13:58,236 - root - DEBUG - request.data:------ WebKitFormBoundaryA8jmfBTRKGJFtMS
Content-Disposition:form-data; NAME = 文件; filename =test_upload.txt
Content-Type:text / plain
qbcdefgh
abcdefgh
------ WebKitFormBoundaryA8jmfBTRKGJFtMS
Content-Disposition :form-data; NAME = 文件; filename =test_upload.txt
Content-Type:text / plain
qbcdefgh
abcdefgh
------ WebKitFormBoundaryA8jmfBTRKGJFtMS--
2016-05-03 00:05:30,501 - root - DEBUG - upload_files:[]
jQuery 版本太旧,导致这个。
当我使用 2.1.1 时,代码运行正常。
顺便说一句,你不需要 form_data .append
。
Trying to upload a file to server but the ImmutableMultiDict object is returning empty.
upload.html
<html>
<head>
<title>Upload File Ajax</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript">
$(function() {
$('#upload-file-btn').click(function() {
var form_data = new FormData($('#upload-file')[0]);
form_data.append('file', $('input[type=file]')[0].files[0]);
console.log(form_data)
$.ajax({
url: '/uploadajax',
data: form_data,
type: 'POST',
contentType: false,
cache: false,
processData: false,
async: false,
success: function(data) {
console.log('Success!');
// console.log(data);
},
});
});
});
</script>
</head>
<body>
<form action="" name="upload-file" id="upload-file" method="post" enctype="multipart/form-data">
<fieldset>
<label for="file">Select a file</label>
<input name="file" id="file" type="file">
</fieldset>
<fieldset>
<button id="upload-file-btn" type="button">Upload</button>
</fieldset>
</form>
</body>
</html>
Flask
app = Flask(__name__)
@app.route('/')
def index():
return render_template("upload.html")
@app.route('/uploadajax', methods = ['POST'])
def upldfile():
logging.debug('request.method : %s', request.method)
logging.debug('request.files : %s', request.files)
logging.debug('request.args : %s', request.args)
logging.debug('request.form : %s', request.form)
logging.debug('request.values : %s', request.values)
logging.debug('request.headers : %s', request.headers
logging.debug('request.data : %s', request.data)
upload_files = request.files.getlist("file")
logging.debug('upload_files : %s', upload_files)
file_val = request.files
for k, v in file_val.items() :logging.debug('key : %s -- value : %s ', k, v)
# if request.method == 'POST':file_val = request.files['file']
return render_template('upload.html')
if __name__ == '__main__':
app.run(host='127.0.0.1', debug=True, port=2345, use_reloader=True)
This is the log data
016-05-03 00:05:30,500 - root - DEBUG - request.method : POST
2016-05-03 00:05:30,500 - root - DEBUG - request.files : ImmutableMultiDict([])
2016-05-03 00:05:30,500 - root - DEBUG - request.args : ImmutableMultiDict([])
2016-05-03 00:05:30,501 - root - DEBUG - request.form : ImmutableMultiDict([])
2016-05-03 00:05:30,501 - root - DEBUG - request.values : CombinedMultiDict([ImmutableMultiDict([]), ImmutableMultiDict([])])
2016-05-03 00:05:30,501 - root - DEBUG - request.headers : Referer: http://127.0.0.1:2345/
Origin: http://127.0.0.1:2345
Content-Length: 368
User-Agent: Mozilla/5.0....
Connection: keep-alive
X-Requested-With: XMLHttpRequest
Host: 127.0.0.1:2345
Accept: */*
Accept-Language: en-US,en;q=0.8
Content-Type: false
Accept-Encoding: gzip, deflate2016-05-03 03:13:58,236 - root - DEBUG - request.data : ------WebKitFormBoundaryA8jmfBTRKGJFtMS
Content-Disposition: form-data; name="file"; filename="test_upload.txt"
Content-Type: text/plain
qbcdefgh
abcdefgh
------WebKitFormBoundaryA8jmfBTRKGJFtMS
Content-Disposition: form-data; name="file"; filename="test_upload.txt"
Content-Type: text/plain
qbcdefgh
abcdefgh
------WebKitFormBoundaryA8jmfBTRKGJFtMS--
2016-05-03 00:05:30,501 - root - DEBUG - upload_files : []
解决方案
It's your jQuery
version too old to cause this.
When I use 2.1.1, the code runs Okay.
BTW, you do NOT need form_data.append
.
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