Python flask使用ajax上传文件request.files为空
Python flask使用ajax上传文件request.files为空
提问于 2018-07-23 00:23:12
我正在尝试上传一个大约1.62MB的图像到一个使用flask编写的端点。request.files对象始终为空。我已经检查了以下问题，但没有成功：
- Flask request.files is empty
- https://github.com/requests/requests/issues/2505
- How to upload a file using an ajax call in flask
这是我的服务器：
from flask import Flask, request, jsonify, render_template
import sys
app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = r"C:\Temp"
app.debug = True
@app.route("/demo-upload", methods=["GET", "POST"])
def ProcessImage():
if request.method == "POST":
print(request.files)
try:
if 'file' in request.files:
with open("test-upload.png", "wb") as iFile:
print(request['file'])
iFile.write(request.files['file'])
except Exception as e:
print(e)
return jsonify("Ok")
@app.route("/", methods=["GET"])
def DemoIndexPage():
return render_template("index.html")
if __name__ == "__main__":
app.run()我的客户：
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<script src="https://code.jquery.com/jquery-2.2.4.min.js"
integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44="
crossorigin="anonymous"></script>
<title>Demo</title>
</head>
<body>
<h1 style="text-align: center">Status Demo</h1>
<span>upload image to process.</span><br/>
<form id="FileForm" name="file" enctype="multipart/form-data">
<input type="file" name="file" id="File" />
<input type="button" name="submit" value="submit" onclick="ProcessImage()" />
</form>
<p id="status" hidden>Success!</p>
<script>
function ProcessImage()
{
var form_data = new FormData($('#File')[0]);
console.log(form_data)
$.ajax({
type: 'POST',
url: '/demo-upload',
data: form_data,
contentType: false,
cache: false,
processData: false,
async: false,
success: function (data) {
console.log('Success!');
$("#status").show();
},
});
}
</script>
</body>
</html>对我来说，一切看起来都很干净，我不知道我错在哪里。request对象中的files属性始终为空。我还尝试使用postman使用post请求，其中form-data key = file和value = uploaded a file，以及一个头文件content-type = "multipart/form-data“。任何帮助都很感谢，非常感谢！
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51467036
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