利用formdata对象上传文件时，需要添加的参数

function doUpload() {
     var formData = new FormData($( "#uploadForm" )[0]);
     $.ajax({
          url: 'http://localhost:8080/cfJAX_RS/rest/file/upload' ,
          type: 'POST',
          data: formData,
          async: false,
          cache: false,
          contentType: false,
          processData: false,
          success: function (returndata) {
              alert(returndata);
          },
          error: function (returndata) {
              alert(returndata);
          }
     });
}

实践代码：

/*
* 编辑马甲图片上传接口改为线上个人中心头像上传接口
* */
$(document).on("change","#js_moment_tx_upload_pic",function(){
    var oMyForm = new FormData();
    var t = $(this);
    t_file = t[0].files[0];
    oMyForm.append("image",t_file);
    $.ajax({
        url: '/user_apply/change_avatar?is_ajax=1&huxiu_hash_code='+huxiu_hash_code,
        data: oMyForm,
        dataType: "json",
        type: "post",
        processData: false,
        contentType: false,
        success: function (data) {
            t.attr("data-imgid",data.data.uuid);
            t.attr("data-imgurl",data.data.img_url);
            $("#moment-upload-pic").attr("src",data.data.img_url);
        }
    });
});