我从画布获取我的图像对象并将其转换为blob,然后转换为java脚本文件
var sendingData = new FormData();
var ctx = mainCanvas.getContext("2d");
console.log("canveas content =" + noofchildren.get(i));
ctx.drawImage(noofchildren.get(i), 0, 0, mainCanvas.width, mainCanvas.height);
var b64Data = mainCanvas.toDataURL("image/jpeg", 0.7).split(",")[1];
var byteCharacters = atob(b64Data);
var byteNumbers = new Array(byteCharacters.length);
for (var j = 0; j < byteCharacters.length; j++) {
byteNumbers[j] = byteCharacters.charCodeAt(j);
}
var byteArray = new Uint8Array(byteNumbers);
var blob = new Blob([byteArray], { type: contentType });
var file = new File([blob], "sample.JPG", { type: "image/jpeg" });
sendingData.append(nameOfTheImageFiles[i], file);
var ajaxRequest = $.ajax({
type: "POST",
url: "/api/" + email + "/imagesupload",
contentType: 'multipart/form-data',
processData: false,
data: sendingData
}).success(function (data) {
console.log(data);
$("#image-container").children().remove();
});
我正在使用ajax将我的文件发布到nodejs服务器
和req.files是nodejs中的空对象
如何解决?
在asp.net中,我在post方法
上获取文件答案 0 :(得分:0)
查看FormData.append()
的文档,您可以看到在指定第三个File
参数时,您只能使用filename
作为值。因此,请尝试将相关行交换到以下
sendingData.append(nameOfTheImageFiles[i], file, "sample.JPG");