在使用flask定义路由完成文件上传时，定义upload视图函数
from flask import Flask, render_templatefrom werkzeug.utils import secure_filenameimport osapp = Flask(__name__)app.debug = Trueapp.secret_key = ‘helloworld!!‘@app.route(‘/‘)def hello_world(): ???return ‘Hello World!‘@app.route(‘/upload‘,methods=[‘GET‘,‘POST‘])def upload(): ???if request.method == ‘POST‘: ???????f = request.files[‘file‘] ???????base_path = os.path.abspath(os.path.dirname(__file__)) ???????upload_path = os.path.join(base_path,‘static\uploads‘) ???????f.save(upload_path,secure_filename(f.filename)) ???????return "文件上传成功!!" ???return render_template(‘upload.html‘)@app.errorhandler(404)def page_not_found(error): ???return render_template(‘404.html‘),404if __name__ == ‘__main__‘: ???app.run(debug=True)
upload.html前端页面的内容为
<!DOCTYPE html><html lang="en"><head> ???<meta charset="UTF-8"> ???<title>文件上传</title></head><body><h1>文件上传示例</h1><form action="" method="post" enctype="multipart/form-data"> ???<input type="file" name="file"> ???<input type="submit" value="上传"></form></body></html>
启动项目，用浏览器打开http://127.0.0.1:5000/upload页面，前端页面显示如图所示
选择要上传的文件
文件选择完毕后，点击上传，flask会抛出异常，提供没有权限
修改upload视图函数
@app.route(‘/upload‘,methods=[‘GET‘,‘POST‘])def upload(): ???if request.method == ‘POST‘: ???????f = request.files[‘file‘] ???????base_path = os.path.abspath(os.path.dirname(__file__)) ???????upload_path = os.path.join(base_path,‘static\uploads‘,secure_filename(f.filename)) ???????f.save(upload_path) ???????return "文件上传成功!!" ???return render_template(‘upload.html‘)
再次进行文件上传，选中文件后，点击上传按钮，可以看到
由此可以看出，文件已经成功上传，此时查看项目static/uploads目录，可以看到上传的图片已经保存在flask项目中了
由此可以在Flask项目中完成文件上传功能!!
falsk之文件上传
原文地址：https://www.cnblogs.com/sui776265233/p/9893551.html