2023.11.17使用flask将多个图片文件上传至服务器

实现功能：
1、同时上传多个图片文件
2、验证文件扩展名
3、显示上传文件的文件名
4、显示文件上传结果

程序结构

main.py

from flask import Flask, request, jsonify, render_template
import os

app = Flask(__name__)

# 设置上传文件存储目录
UPLOAD_FOLDER = 'uploads'
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER

# 允许上传的文件类型
ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg', 'gif'}

@app.route('/')
def index():
    return render_template('index.html')

# 检查文件名是否合法
def allowed_file(filename):
    return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS

# 处理文件上传
@app.route('/upload', methods=['POST'])
def upload_file():
    files = request.files.getlist("file")
    success_files = []
    failed_files = []

    for file in files:
        if file and allowed_file(file.filename):
            filename = file.filename
            file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
            success_files.append(filename)
        else:
            failed_files.append(file.filename)

    if failed_files:
        return jsonify({'message': '部分文件上传失败', 'failed_files': failed_files})
    else:
        return jsonify({'message': '所有文件上传成功', 'success_files': success_files})

if __name__ == '__main__':
    app.run(debug=True)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42

index.html

    
    
    


    

        
文件上传
        

            

                
                选择文件
            
            上传
        

        

    

    


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58