如何防止 Spring MVC 添加额外的属性到我的 JSON 中？

发布于 2024-12-05 11:00:35 字数 978 浏览 1 评论 0原文

我正在使用 Jackson 和 ContentNegotiatingViewResolver 从 Spring 控制器返回 JSON。

当我在 Spring 中定义这样的方法

public ModelMap save(FileUploadBean uploadItem, ParameterBean params) throws JsonParseException, JsonMappingException, IOException

并返回 ModelMap

ModelMap model = new ModelMap();
model.addAttribute("output","Save was ok");
return model;

时，Spring 总是将 uploadItem 和 params 附加到 JSON 响应，尽管我从未添加这些两个到 ModelMap。

结果看起来像这样

{
  "parameterBean": {
    "values": {
      "json": "{\"seizure\":{\"id\":1},\"classDocumentType\":{\"id\":1},\"seizureDocumentI18ns\":[{\"id\":\"\",\"comment\":\"123\",\"matLanguageCode\":\"\"}]}"
    }
  },
  "output": ["Save was ok"],
  "fileUploadBean": {
    "file": {
      "originalFilename": "Form.png",
      "fileItem": {
        "contentType": "image/png"
      }
    }
  }
}

，这是默认行为吗？如果描述在哪里......

原文

I am using Jackson and a ContentNegotiatingViewResolver to return JSON from Spring controllers.

When I define a method in Spring like this

public ModelMap save(FileUploadBean uploadItem, ParameterBean params) throws JsonParseException, JsonMappingException, IOException

and return a ModelMap

ModelMap model = new ModelMap();
model.addAttribute("output","Save was ok");
return model;

Spring allways attaches uploadItem and params to the JSON response despite I have never added these two to ModelMap.

The result looks something like that

{
  "parameterBean": {
    "values": {
      "json": "{\"seizure\":{\"id\":1},\"classDocumentType\":{\"id\":1},\"seizureDocumentI18ns\":[{\"id\":\"\",\"comment\":\"123\",\"matLanguageCode\":\"\"}]}"
    }
  },
  "output": ["Save was ok"],
  "fileUploadBean": {
    "file": {
      "originalFilename": "Form.png",
      "fileItem": {
        "contentType": "image/png"
      }
    }
  }
}

Is this default behaviour, and if where is it described...

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