Titanium Appcelerator图像上传问题，当呼叫服务没有图像时

Question

I have prepared an application with image upload. It sends some text and an image.

It's working fine when I add an image and content(text). Unfortunately it's not working when I call the service without an image, see code below,

var params = {
        file :$.selectedImageVw.image,   //if file is not selected it will send as null
        UserId : Ti.App.userID,
        postContent : $.postMessage.value
    };
var xhr = Titanium.Network.createHTTPClient();
    xhr.onreadystatechange = function() {
        if (this.readyState == 4) {
            progressVw.hide();

            // callback("Success");
            // alert(this.responseData);
            progressVw.hide();
            xhr = null;
        }
    };

    xhr.setRequestHeader('Content-Type', 'multipart/form-data');
    xhr.setRequestHeader('enctype', 'multipart/form-data');
    xhr.setRequestHeader('Content-length', params.length);
    xhr.open("POST", "uploadUrl");
    xhr.send(params);

I hope someone can help me. Thanks in advance!!

Answer 1

尝试使用http://requestb.in/之类的服务来检查客户端发出的请求是问题还是您使用的后端。

Answer 2

@FokkeZandbergan thanks for your respone, This issue resolve by very simple modification'

xhr.setRequestHeader('Content-Type', 'multipart/form-data');

changed to

xhr.setRequestHeader('Content-Type', "application/x-www-form-urlencoded");

Now its working with both imags and without images .

It may help to some one . :)