刚刚也遇到这个问题，解决了，顺便记录一下。addFile的参数key，不能为数字，必须转换为字符串。

```javascript
var task = plus.uploader.createUpload("http://upload.qiniu.com/", {
method: "POST"
},
function(t, status) { //
console.log(t.responseText);
var data = JSON.parse(t.responseText);
console.log(data.message);
if (status == 200) {
wt.close();
} else {
mui.toast("上传失败：" + status);
wt.close();
}
}
);
var uid = Math.floor(Math.random() * 100000000 + 10000000).toString();
var scope="test";
var type=uid+url.substring(url.lastIndexOf("."),url.length);
var putPolicy = {
scope: scope + ":" + type,
deadline: new Date().getTime()
}
var token = genUpToken(app.AK, app.SK, putPolicy);
task.addData("key", type);
task.addData("scope", scope);
task.addData("token", token);
console.log(url);
task.addFile(url, {
"key":"file",
"name": "file"
});
task.start();
```

参考Hello 5+示例工程中的uploader模块的示例以及[相关文档](http://www.html5plus.org/doc/zh_cn/uploader.html)。

php后端接收参考[https://github.com/dcloudio/H5P.Server/tree/master/uploader](https://github.com/dcloudio/H5P.Server/tree/master/uploader)