将base64格式文件从javascript上传到java

Question

我想将Base64图像上传到服务器。我使用jsp和js作为前端客户端，java作为后端。

var imgData =imagesScanned.data;
    JSON.stringify(imgData)
    var fileShareDetails = {
        pageMode : "SCAN_FILE_UPLOAD",
        imgData:imgData,        
    };

    var d = $.param(fileShareDetails);

    $.ajax({
        url: "folderNavigation.do?" + d,
        dataType: 'JSON',
        data: imgData,
        type: 'POST',
        success: function(data) {
            alert("response is coming")
        }
    });

如果我从此上传，我将收到以下错误

Failed to load resource: net::ERR_CONNECTION_RESET http://localhost:9080/Initial/folderNavigation.do?pageMode=SCAN_FILE_UPLOAD…2FWi4XFMrY7Ukb5dqDgj7o%2FWo0VYySowSeckn%2BdK4XJmetKsdnNbFJkn%2F%2F2Q%3D%3 ......

请有人帮助我，因为我已经坚持了好几个小时。

Answer 1

您不能在网址中加入大量参数。

将所有参数或至少imgData放入请求正文中。

$.ajax({
    url: "folderNavigation.do?" + d,    // remove the "+d"
    dataType: 'JSON',
    data: imgData,         // this part goes into the body,
                           // maybe you want "fileShareDetails" 
                           // instead of "imgData"
    type: 'POST',
    success: function(data) {
        alert("response is coming")
    }
});