javascript - Extjs4 - 表单提交总是返回失败

Question

我正在使用 ExtJS 4 表单提交 Excel 文件，但即使请求成功，它也会注册失败。 form.submit 函数期望看到什么？

表单

xtype: 'form',
name: 'upload_form',
items: [{
      text: 'File Upload',
      xtype: 'fileuploadfield',
      name: 'upload_btn',
      buttonOnly: true,
      hideLabel: true,
      allowBlank: false,
      clearOnSubmit: false
}]

Controller

'filter fileuploadfield[name="upload_btn"]': {
            change: this.UploadClick
        }
    ...
    UploadClick: function (vb, s) {
    var controller = this,
        form = controller.getUploadForm();

    if (form.isValid()) {
        form.submit({
            url: '/upload',
            waitMsg: 'Uploading your csv...',
            success: function (fp, o) {
                Ext.Msg.show({
                    title: 'Upload Complete',
                    msg: o.response.responseText,
                    icon: 'save-success',
                    buttons: Ext.Msg.OK
                });
            },
            failure: function (fp, o) {
                Ext.Msg.show({
                    title: 'Upload Error',
                    msg: o.response.responseText,
                    icon: Ext.MessageBox.ERROR,
                    buttons: Ext.Msg.OK
                });
            }
        });
    }
}

Java返回

Response.ResponseBuilder builder;
...
builder = Response.ok(null);
        return builder.build();

Answer 1

不要发送null Response ...但是预期的 JSON 以及正确的内容类型 header :

String json = "{\"success\": true}";
return Response.ok(json, MediaType.APPLICATION_JSON).build();