關於Django中JsonResponse返回中文字典編碼錯誤的解決方案

解決方案:JsonResponse(data, json_dumps_params={'ensure_ascii':False})

! data是須要渲染的字典

def master(request):
    data = {'這是':'主頁'}
    return  JsonResponse(data, json_dumps_params={'ensure_ascii':False})

 顯示效果: 前端

首先咱們看JsonResponse()的源碼:python

class JsonResponse(HttpResponse): 

  def __init__(self, data, encoder=DjangoJSONEncoder, safe=True,
    json_dumps_params=None, **kwargs):

    if safe and not isinstance(data, dict):
      raise TypeError(
      'In order to allow non-dict objects to be serialized set the '
      'safe parameter to False.'
      )
    if json_dumps_params is None:
      json_dumps_params = {}
    kwargs.setdefault('content_type', 'application/json')
     data = json.dumps(data, cls=encoder, **json_dumps_params)
     super(JsonResponse, self).__init__(content=data, **kwargs)

 這裏咱們從根源開始找它編碼錯誤的緣由:json

JsonResponse()在初始化的時候使用了json.dumps()把字典轉換成了json格式,具體方法以下:app

data = json.dumps(data, cls=encoder, **json_dumps_params)

接下來咱們看看json.dumps()的源碼:編碼

def dumps(obj, skipkeys=False, ensure_ascii=True, check_circular=True,
        allow_nan=True, cls=None, indent=None, separators=None,
        default=None, sort_keys=False, **kw):
    if (not skipkeys and ensure_ascii and
        check_circular and allow_nan and
        cls is None and indent is None and separators is None and
        default is None and not sort_keys and not kw):
        return _default_encoder.encode(obj)
    if cls is None:
        cls = JSONEncoder
    return cls(skipkeys=skipkeys, ensure_ascii=ensure_ascii,
        check_circular=check_circular, allow_nan=allow_nan,         
        indent=indent,separators=separators, default=default, 
        sort_keys=sort_keys,**kw).encode(obj)    

 源碼註釋原文:If ``ensure_ascii`` is false, then the return value can contain non-ASCII characters if they appear in strings contained in ``obj``. Otherwise, all such characters are escaped in JSON strings.spa

 也就是說ensure_ascii是false的時候,能夠返回非ASCII碼的值,不然就會被JSON轉義。
3d

因此含有中文的字典轉json字符串時,使用 json.dumps() 方法要把ensure_ascii參數改爲false,即 json.dumps(dict,ensure_ascii=False)code

JsonResponse()接收參數有關鍵詞參數,json_dumps_params=None ,用來給 json.dumps() 傳參,因此 要在關鍵字參數後面拼個字典來傳另外一組關鍵字參數 ensure_ascii=False,即:blog

json_dumps_params={'ensure_ascii':False}ip

綜上可解決使用 JsonResponse() 強制把含有中文的字典轉json並返回響應,前端渲染編碼錯誤的問題。

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