1. 程式人生 > >關於Django中JsonResponse返回中文字典編碼錯誤的解決方案

關於Django中JsonResponse返回中文字典編碼錯誤的解決方案

keys **kwargs 技術 pytho div safe 關於 order res

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

! data是需要渲染的字典

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

 顯示效果: 

技術分享圖片

首先我們看JsonResponse()的源碼:

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)

 這裏我們從根源開始找它編碼錯誤的原因:

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

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

接下來我們看看json.dumps()的源碼:

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.

也就是說ensure_ascii是false的時候,可以返回非ASCII碼的值,否則就會被JSON轉義。

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

JsonResponse()接收參數有關鍵詞參數,json_dumps_params=None ,用來給 json.dumps() 傳參,所以 要在關鍵字參數後面拼個字典來傳另一組關鍵字參數 ensure_ascii=False,即:

json_dumps_params={‘ensure_ascii‘:False}

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。

關於Django中JsonResponse返回中文字典編碼錯誤的解決方案