使用HTTP将文件上传到Dropbox

Question

我有一个NativeScript项目，我必须使用Dropbox v2方法上传.db文件。在触发按钮上始终创建大小为0b的文件。有人请指导我上传内容。我试过的是

http.request({
        url: "https://content.dropboxapi.com/2/files/upload",
        method: "POST",
        headers: { 
        "Content-Type": "application/octet-stream",
        'Authorization' : 'Bearer abcfblaabla7384',
        'Dropbox-API-Arg' : 
        '{"path":"/dbFile/'+file.name+'","mode":"add","autorename":true}',
        }, 
        }).then(function (response) {   
        console.log("dropbox response is"+response);
        }, function (e) {
                console.log("Error occurred " + e);
});