如何使用jQuery.ajax和FormData上传文件

您必须添加

processdata:false,contentType:false

function uploadFile(blobFile, fileName) {    var fd = new FormData();    fd.append("fileToUpload", blobFile);    $.ajax({       url: "upload.php",       type: "POST",       data: fd,       processdata: false,       contentType: false,       success: function(response) {// .. do something       },       error: function(jqXHR, textStatus, errorMessage) {console.log(errorMessage); // Optional       }    });}