AjaxFileUpload.js 是一个用于实现文件分块上传的 JavaScript 库。要实现断点续传,你需要在客户端和服务器端都进行一些配置和编码。以下是实现断点续传的基本步骤:
首先,确保你已经在 HTML 文件中引入了 AjaxFileUpload.js 库。然后,对需要实现断点续传的文件上传元素进行配置:
<input type="file" id="fileInput" />
<script src="ajaxFileUpload.js"></script>
<script>
$(document).ready(function () {
$("#fileInput").ajaxFileUpload({
url: "your_server_upload_url", // 服务器端上传接口地址
secureuri: false,
fileElementId: "fileInput",
dataType: "json",
success: function (data, status) {
console.log("上传成功");
},
error: function (data, status, e) {
console.log("上传失败");
},
progress: function (data, status) {
console.log("上传进度:" + data.percent);
},
});
});
</script>
服务器端需要支持断点续传,这通常涉及到处理文件的分块和合并。以下是一个使用 Python Flask 的简单示例:
from flask import Flask, request, jsonify
import os
app = Flask(__name__)
UPLOAD_FOLDER = "uploads"
CHUNK_SIZE = 1024 * 1024 # 1MB
if not os.path.exists(UPLOAD_FOLDER):
os.makedirs(UPLOAD_FOLDER)
@app.route("/upload", methods=["POST"])
def upload():
file = request.files["file"]
filename = file.filename
chunk_index = int(request.form["chunk_index"])
total_chunks = int(request.form["total_chunks"])
file_path = os.path.join(UPLOAD_FOLDER, filename)
temp_file_path = f"{file_path}.part{chunk_index}"
with open(temp_file_path, "wb") as f:
f.write(file.read())
if chunk_index == total_chunks - 1:
with open(file_path, "wb") as f:
for i in range(total_chunks):
chunk_file_path = f"{file_path}.part{i}"
with open(chunk_file_path, "rb") as chunk_file:
f.write(chunk_file.read())
os.remove(chunk_file_path)
return jsonify({"status": "success"})
if __name__ == "__main__":
app.run()
在这个示例中,我们使用 Flask 框架创建了一个简单的文件上传接口。服务器端接收文件的分块,并将其保存为临时文件。当所有分块都接收完毕时,服务器端将它们合并为一个完整的文件。
注意:这个示例仅用于演示目的,实际应用中可能需要考虑更多的错误处理和安全性问题。