simplejson double escapes data caused invalid JSON string

我有一個簡單的表單來管理我店裏的製造商。在發佈表單之後，ajax調用將帶有更新數據的json返回給表單。問題是，返回的字符串是無效的。看起來它是雙重逃脫的。整個車間奇怪的類似方法沒有任何問題。我也使用jQuery 1.6作爲JavaScript框架。simplejson double escapes data caused invalid JSON string

模型包含3個字段：名稱字符，描述文字和製造商徽標的圖像字段。

功能：

def update_data(request, manufacturer_id): 
    """Updates data of manufacturer with given manufacturer id. 
    """ 
    manufacturer = Manufacturer.objects.get(pk=manufacturer_id) 
    form = ManufacturerDataForm(request.FILES, request.POST, instance=manufacturer) 

    if form.is_valid(): 
     form.save() 

    msg = _(u"Manufacturer data has been saved.") 

    html = [ 
     ["#data", manufacturer_data_inline(request, manufacturer_id, form)], 
     ["#selectable-factories-inline", selectable_manufacturers_inline(request, manufacturer_id)], 
    ] 

    result = simplejson.dumps({ 
     "html": html 
    }, cls=LazyEncoder) 
    return HttpResponse(result)

在控制檯中的錯誤：錯誤無效的JSON：

uncaught exception: Invalid JSON: {"html": [["#data", "\n<h2>Dane</h2>\n<div class="\"manufacturer-image\"">\n \n</div>\n<form action="\"/manage/update-manufacturer-data/1\"" method="\"post\"">\n \n <div class="\"field\"">\n <div class="\"label\"">\n <label for="\"id_name\"">Nazwa</label>:\n </div>\n \n \n <div class="\"error\"">\n <input id="\"id_name\"" name="\"name\"" maxlength="\"50\"" type="\"text\"">\n <ul class="\"errorlist\""><li>Pole wymagane</li></ul>\n </div>\n \n </div>\n\n <div class="\"field\"">\n <div class="\"label\"">\n <label for="\"id_image\"">Zdjecie</label>:\n </div>\n \n \n <div>\n <input name="\"image\"" id="\"id_image\"" type="\"file\"">\n </div>\n \n </div>\n\n <div class="\"field\"">\n <div class="\"label\"">\n <label for="\"id_description\"">Opis</label>:\n </div>\n \n \n <div>\n <textarea id="\"id_description\"" rows="\"10\"" cols="\"40\"" name="\"description\""></textarea>\n </div>\n \n </div>\n \n <div class="\"buttons\"">\n <input class="\"ajax-save-button" button\"="" type="\"submit\"">\n </div>\n</form>"], ["#selectable-factories-inline", "\n <div>\n <a class="\"selectable" selected\"\n="" href="%5C%22/manage/manufacturer/1%5C%22">\n L1\n </a>\n </div>\n\n <div>\n <a class="\"selectable" \"\n="" href="%5C%22/manage/manufacturer/4%5C%22">\n KR3W\n </a>\n </div>\n\n <div>\n <a class="\"selectable" \"\n="" href="%5C%22/manage/manufacturer/3%5C%22">\n L1TA\n </a>\n </div>\n\n"]]}

任何想法？

來源

2011-11-19 mike_hornbeck

我記錄了結果變量，所以基本上只是返回到模板的東西，它正確地轉義。所以看起來響應在被jquery的parseJSON函數處理之前在某處被轉義。現在我真的很困惑。 –

錯誤在哪裏被捕獲？它在服務器端還是在瀏覽器中？ –

在你的json文本區域內有雙引號和它的html編碼。例如，所有的類屬性都是這樣的錯誤輸出：

class="\&quote;classname\&quote;"

以上應爲：

class=\"classname\"

原始json.dumps將輸出這樣的：

>>> json.dumps(["#data", '<div class="classname"></div>']) 
'["#data", "<div class=\\"classname\\"></div>"]'

我懷疑或者您的manufacturer_data_inline或selectable_manufacturers_inline調用將您的報價加倍"\&quote;或LazyEncoder類執行錯誤。

來源

2011-11-19 01:44:14

simplejson double escapes data caused invalid JSON string

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