simplejson双重转义数据导致无效的JSON字符串

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1 回答
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提问于 2025-04-17 06:38

我有一个简单的表单,用来管理我店里的制造商。在提交表单后,ajax调用会返回一个包含更新数据的json格式的字符串。但问题是,这个返回的字符串是无效的,感觉像是被双重转义了。奇怪的是,整个店里用的类似方法都没有问题。我还在用jquery 1.6作为我的JavaScript框架。

这个模型包含三个字段:一个字符型字段用于名称,一个文本型字段用于描述,还有一个图像字段用于制造商的logo。

这个函数:

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)

控制台中的错误信息:无效的JSON错误:

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

有什么想法吗?

1 个回答

0

在你的json文本中,既有双引号,也有它的html编码。例如,错误输出中的所有类属性都是这样的:

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

上面的内容应该是:

class=\"classname\"

一个普通的 json.dumps 会输出这个:

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

我怀疑你的 manufacturer_data_inline 或者 selectable_manufacturers_inline 调用可能导致了引号的重复 "\&quote;,或者是LazyEncoder类出了问题。

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