解决方案:JsonResponse(data, json_dumps_params={'ensure_ascii':False})
! data是需要渲染的字典
def master(request):
data = {'这是':'主页'}
return JsonResponse(data, json_dumps_params={'ensure_ascii':False})
显示效果:
首先我们看JsonResponse()的源码:
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)
这里我们从根源开始找它编码错误的原因:
JsonResponse()在初始化的时候使用了json.dumps()把字典转换成了json格式,具体方法如下:
data = json.dumps(data, cls=encoder, **json_dumps_params)
接下来我们看看json.dumps()的源码:
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)
源码注释原文: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.
也就是说ensure_ascii是false的时候,可以返回非ASCII码的值,否则就会被JSON转义。
所以含有中文的字典转json字符串时,使用 json.dumps() 方法要把ensure_ascii参数改成false,即 json.dumps(dict,ensure_ascii=False)。
JsonResponse()接收参数有关键词参数,json_dumps_params=None ,用来给 json.dumps() 传参,所以 要在关键字参数后面拼个字典来传另一组关键字参数 ensure_ascii=False,即:
json_dumps_params={'ensure_ascii':False}
综上可解决使用 JsonResponse() 强制把含有中文的字典转json并返回响应,前端渲染编码错误的问题。