phonegap gallery上传图片

Question

我试图从图库中获取图片，但它不起作用

我从以下代码中得到的错误是：

  

上传失败：代码= 3

上传图片

function uploadPicture() {  
    // Get URI of picture to upload
    var img = document.getElementById('camera_image');
    var imageURI = img.src;
    if (!imageURI || (img.style.display == "none")) {
        document.getElementById('camera_status').innerHTML = "Take picture or select picture from library first.";
        return;
    }

    // Verify server has been entered
    server = document.getElementById('serverUrl').value;

    if (server) {       
        // Specify transfer options
        var options = new FileUploadOptions();
        options.fileKey="file";
        options.fileName=imageURI.substr(imageURI.lastIndexOf('/')+1);
        options.mimeType="image/jpeg";
        options.chunkedMode = false;
        options.headers = {
           Connection: "close"
        };
        // Transfer picture to server
        var ft = new FileTransfer();
        ft.upload(imageURI, server, function(r) {
            document.getElementById('camera_status').innerHTML = "Upload successful: "+r.bytesSent+" bytes uploaded.";              
        }, function(error) {
            document.getElementById('camera_status').innerHTML = "Upload failed: Code = "+error.code;               
        }, options);
    }
}