文件上传实例

html文件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="" method="post" enctype="multipart/form-data">
    <p>
        <input type="file" name="file">
        <input type =submit value="upload">
    </p>
</form>
</body>
</html>

views处理函数视图文件：

from flask import Flask, request,make_response,render_template, redirect, url_for
from werkzeug.utils import secure_filename # 使用这个是为了确保filename是安全的
from os import path
from flask import Blueprint, render_template
blue = Blueprint("blue", __name__)
@blue.route("/upload/",methods=['GET','POST'])
def upload():
    if request.method=='POST':
        #通过request.files
        f = request.files["file"]
        #<FileStorage: '4.jpg' ('image/jpeg')>
        print(f)
        #获取你的应用的路径
        base_path = path.abspath(path.dirname(__file__))
        # /home/guojie/wenjian/myapp
        print(base_path)
        #拼接你上传的图片路径
        upload_path = path.join(base_path,'static/uploads/')
        #/home/guojie/wenjian/myapp/static/uploads/
        print(upload_path)
        #secure_filename() 对上传的文件名进行安检
        file_name = upload_path + secure_filename(f.filename)
        print(file_name)
        #进行保存
        f.save(file_name)
        print(3)
        return redirect(url_for('blue.upload'))
    return render_template('upload.html')

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