上传图片

html

<div >    <form action="" method="post" id="imgForm" enctype="multipart/form-data">
      选择文件: <input type="file" multiple id="file" name="file" onchange="upIMg()">      路径：<input type="text" id="url" name="filedir" value="czy" />
    </form>    <a onclick="upIMg()">上传</a>  </div>

js

  <script src="./js/jquery-1.9.1.min.js"></script>  <script>    function upIMg() {      var imgForm = $("#imgForm");      var formData = new FormData(imgForm[0]);      $.ajax({        url: "url",        type: "POST",        dataType: "json",        data: formData,        contentType: false,        processData: false,        success: function (res) {          if (res.stateCode == 200) {            console.log(res);          } else {            console.log("请求数据失败");          }          alert(JSON.stringify(res));          // $("#delFile").val(data.data.objectName);        }      });    }  </script>

注意：传给后台的数据需要使用formdata封装