Flask file upload代码
import os
from flask import Flask, request, redirect, url_for, send_from_directory
from werkzeug.utils import secure_filename
UPLOAD_FOLDER = '/tmp/flask-upload-test/'
ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif'])
app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
def allowed_file(filename):
return '.' in filename and \
filename.rsplit('.', 1)[1] in ALLOWED_EXTENSIONS
@app.route('/', methods=['GET', 'POST'])
def upload_file():
if request.method == 'POST':
# check if the post request has the file part
if 'file' not in request.files:
print 'no file'
return redirect(request.url)
file = request.files['file']
# if user does not select file, browser also
# submit a empty part without filename
if file.filename == '':
print 'no filename'
return redirect(request.url)
if file and allowed_file(file.filename):
filename = secure_filename(file.filename)
file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
return redirect(url_for('uploaded_file',
filename=filename))
return '''
<!doctype html>
<title>Upload new File</title>
<h1>Upload new File</h1>
<form action="" method=post enctype=multipart/form-data>
<p><input type=file name=file>
<input type=submit value=Upload>
</form>
'''
@app.route('/uploads/<filename>')
def uploaded_file(filename):
return send_from_directory(app.config['UPLOAD_FOLDER'],
filename)
if __name__ == "__main__":
app.run(debug=True)上传测试
$ curl -F 'file=@"foo.png";filename="bar.png"' 127.0.0.1:5000注意：使用上传文件功能的时候使用 POST form-data，参数名就是参数名（一般会提前约定好，而不是变化的文件名），参数的值是一个文件（这个文件正常是有文件名的）。
上传临时文件
有时候脚本生成了要上传的文件，但并没有留在本地的需求，所以使用临时文件的方式，生成成功了就直接上传。
使用 tempfile
tempfile 会在系统的临时目录中创建文件，使用完了之后会自动删除。
import requests
import tempfile
url = 'http://127.0.0.1:5000'
temp = tempfile.NamedTemporaryFile(mode='w+', suffix='.txt')
try:
temp.write('Hello Temp!')
temp.seek(0)
files = {'file': temp}
r = requests.post(url, files=files, proxies=proxies)
finally:
# Automatically cleans up the file
temp.close()使用 StringIO
或者直接使用 StringIO，可以直接在内存中完成整个过程。
import requests
from StringIO import StringIO
url = 'http://127.0.0.1:5000'
temp = StringIO()
temp.write('Hello Temp!')
temp.seek(0)
temp.name = 'hello-temp.txt' # StringIO 的实例没有文件名，需要自己手动设置，不设置 POST 过去那边的文件名会是 'file'
files = {'file': temp}
r = requests.post(url, files=files)其他
补上发现的一段可以上传多个同名附件的代码：
files = [
("attachments", (display_filename_1, open(filename1, 'rb'),'application/octet-stream')),
("attachments", (display_filename_2, open(filename2, 'rb'),'application/octet-stream'))
]
r = requests.post(url, files=files, data=params)参考
10.6. tempfile — Generate temporary files and directories — Python 2.7.12 documentation
以上就是Python Flask 上传文件测试示例的详细内容，更多关于Python Flask上传文件测试的资料请关注编程网其它相关文章！
