引入 boto3 框架
前置步骤：安装框架（https://boto3.amazonaws.com/v1/documentation/api/latest/guide/quickstart.html ）s4-demo.py
# import
import boto3
from botocore.client import Config
# Config
s3endpoint = 'https://s3.bitiful.net' # 请填入控制台 “Bucket 设置” 页面底部的 “Endpoint” 标签中的信息
s3region = 'cn-east-1'
s3accessKeyId = '子账户 accessKey' # 请到控制台创建子账户，并为子账户创建相应 accessKey
s3SecretKeyId = '子账户 secretKey' # ！！切记，创建子账户时，需要手动为其分配具体权限！！
连接到 S4 Endpoint
s4-demo.py
s3client = boto3.client(
's3',
aws_access_key_id = s3accessKeyId,
aws_secret_access_key = s3SecretKeyId,
endpoint_url = s3endpoint,
region_name = s3region
)
列出桶中对象
s4-demo.py
buckets = s3client.list_buckets()
for bucket in buckets['Buckets']:
print(bucket["Name"])
用 Python 调用 S3 SDK（Boto3）实现一个下发“PutObject 预签名链接”以供 Web JS（axios 发起 PUT 请求）上传的前后端完整例子：
s4-demo.py
import boto3
from flask import Flask
from flask import render_template_string
from flask import request
app = Flask(__name__)
@app.get('/upload_url')
def get_upload_url():
# Config
s3endpoint = 'https://s3.bitiful.net' # 请填入控制台 “Bucket 设置” 页面底部的 “Endpoint” 标签中的信息
s3region = 'cn-east-1'
s3accessKeyId = '子账户 accessKey' # 请到控制台创建子账户，并为子账户创建相应 accessKey
s3SecretKeyId = '子账户 secretKey' # ！！切记，创建子账户时，需要手动为其分配具体权限！！
# 连接 S3
client = boto3.client(
's3',
aws_access_key_id = s3accessKeyId,
aws_secret_access_key = s3SecretKeyId,
endpoint_url = s3endpoint,
region_name = s3region
)
url = client.generate_presigned_url(
'put_object',
Params={
'Bucket': 'xxxxxx',
'Key': request.args.get('key'),
},
ExpiresIn=3600
)
return {'url': url}
@app.get('/')
def index():
return render_template_string('''
<!DOCTYPE html>
<html>
<head>
<title>S3 File Upload</title>
</head>
<body>
<div>
<h1>S3 File Upload</h1>
<input type="file" id="file">
<button onclick="handleClick()">Upload</button>
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/1.3.6/axios.min.js"></script>
<script>
let file;
let fileContent;
const fileInput = document.getElementById('file');
const fileReader = new FileReader();
fileInput.addEventListener('change', function (event) {
file = event.target.files[0];
console.log("file is: ", file);
fileReader.readAsArrayBuffer(file);
});
fileReader.onload = function (event) {
fileContent = event.target.result;
// console.log("fileContent is: ", fileContent);
};
function handleClick() {
console.log('click');
const url = `/upload_url`;
const params = {key: '1.jpg'};
axios.get(url, {params: params})
.then(function (res) {
console.log(res);
const url = res.data.url;
const config = {
headers: {
'Content-Type': null,
},
};
axios.put(url, file, config)
.then(function (res) {
console.log("res is: ", res);
});
});
}
</script>
</body>
</html>
''')
if __name__ == '__main__':
app.run(debug=True)