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| import os
from datetime import datetime
from flask import Flask, request, render_template_string, jsonify
UPLOAD_FOLDER = os.path.join(".", "uploads")
if not os.path.exists(UPLOAD_FOLDER):
os.makedirs(UPLOAD_FOLDER)
app = Flask(__name__)
HTML_TEMPLATE = '''
<!doctype html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>文件上传</title>
<style>
body {
font-family: Arial, sans-serif;
text-align: center;
margin-top: 100px;
}
#dropzone {
border: 3px dashed #aaa;
border-radius: 10px;
padding: 150px 50px;
width: 60%;
margin: 0 auto;
background-color: #fafafa;
cursor: pointer;
}
#dropzone.dragover {
background-color: #e0f7fa;
border-color: #00acc1;
}
input[type="file"] {
display: none;
}
#message {
margin-top: 20px;
font-size: 16px;
color: green;
text-align: left;
width: 60%;
margin-left: auto;
margin-right: auto;
}
.new-upload {
margin-top: 1px;
border-radius: 4px;
}
.new-upload.success {
color: #2e7d32;
background-color: #e8f5e9;
}
.new-upload.failure {
color: #c62828;
background-color: #ffebee;
}
</style>
</head>
<body>
<h1>拖拽文件到下方区域，或点击选择文件</h1>
<form id="upload-form" method="post" enctype="multipart/form-data">
<div id="dropzone">
<p>拖拽文件到这里，或点击选择文件</p>
<input type="file" name="file" multiple id="file-input">
</div>
<div id="message"></div>
</form>
<script>
const dropzone = document.getElementById('dropzone');
const fileInput = document.getElementById('file-input');
const message = document.getElementById('message');
dropzone.addEventListener('click', () => {
fileInput.click();
});
fileInput.addEventListener('change', () => {
uploadFiles(fileInput.files);
});
dropzone.addEventListener('dragover', (e) => {
e.preventDefault();
dropzone.classList.add('dragover');
});
dropzone.addEventListener('dragleave', () => {
dropzone.classList.remove('dragover');
});
dropzone.addEventListener('drop', (e) => {
e.preventDefault();
dropzone.classList.remove('dragover');
uploadFiles(e.dataTransfer.files);
});
function uploadFiles(files) {
// 移除旧的上传样式（恢复默认）
document.querySelectorAll('.new-upload').forEach(el => {
el.classList.remove('new-upload', 'success', 'failure');
});
const formData = new FormData();
for (let i = 0; i < files.length; i++) {
formData.append('file', files[i]);
}
fetch('/', {
method: 'POST',
body: formData
})
.then(response => response.json())
.then(data => {
data.results.forEach(res => {
let className = 'new-upload';
if (res.includes('上传成功')) {
className += ' success';
} else if (res.includes('上传失败')) {
className += ' failure';
}
const div = document.createElement('div');
div.className = className;
div.innerHTML = res;
message.appendChild(div);
});
fileInput.value = '';
})
.catch(error => {
const div = document.createElement('div');
div.className = 'new-upload failure';
div.innerHTML = '上传失败: ' + error;
message.appendChild(div);
});
}
</script>
</body>
</html>
'''
@app.route('/', methods=['GET', 'POST'])
def upload_files():
if request.method == 'POST':
files = request.files.getlist('file')
if not files or files[0].filename == '':
return jsonify({'results': ['没有选择文件。']})
today = datetime.now().strftime('%Y-%m-%d')
today_folder = os.path.join(UPLOAD_FOLDER, today)
if not os.path.exists(today_folder):
os.makedirs(today_folder)
blacklist_extensions = ['exe', 'bat', 'sh', 'py', 'js', 'vbs', "kts", "avi", "mp4", "mkv", "java", "ts", "php"]
MAX_FILE_SIZE = 20 * 1024 * 1024
MAX_TOTAL_SIZE = 30 * 1024 * 1024
total_size = 0
for file in files:
if file:
file.seek(0, os.SEEK_END)
total_size += file.tell()
file.seek(0)
if total_size > MAX_TOTAL_SIZE:
return jsonify({'results': ['总上传大小超过 30MB 限制，请减少文件数量或大小']})
results = []
for file in files:
if file:
file.seek(0, os.SEEK_END)
file_size = file.tell()
file.seek(0)
if file_size > MAX_FILE_SIZE:
results.append(f'{file.filename} 上传失败：文件大小超过 20MB 限制')
continue
ext = os.path.splitext(file.filename)[1].lower().lstrip('.')
if ext in blacklist_extensions:
results.append(f'{file.filename} 上传失败：禁止上传的文件类型')
continue
try:
file_path = os.path.join(today_folder, file.filename)
if os.path.exists(file_path):
base, ext = os.path.splitext(file.filename)
timestamp = datetime.now().strftime('%Y-%m-%d %H-%M-%S')
new_name = f"{base} {timestamp}{ext}"
file_path = os.path.join(today_folder, new_name)
print("filePath =", file_path)
file.save(file_path)
print("filePath saved =", file_path)
results.append(f'{os.path.basename(file_path)} 上传成功')
except Exception as e:
results.append(f'{file.filename} 上传失败: {str(e)}')
print("error =", e)
return jsonify({'results': results})
return render_template_string(HTML_TEMPLATE)
if __name__ == '__main__':
app.run(host='0.0.0.0')
|