关于flask的jsonify序列化dict后的结果会自动根据key的下标升序排列,希望dict原样返回的方法【重写jsonify方法】

╰半橙微兮° 2021-09-29 03:54 250阅读 0赞

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzM0MzE0NA_size_16_color_FFFFFF_t_70][]

from flask import current_app, json
    
    
    class GlobalJson:
        # 重写flask的jsonify方法【给json.dumps增加sort_keys=False属性,确保返回的dict原样输出-不参与key的排序】
        def jsonify(*args, **kwargs):
            """
            修改flask框架的jsonify中,json.dumps增加sort_keys=False属性【dict序列化原样返回】
            This function wraps :func:`dumps` to add a few enhancements that make
            life easier.  It turns the JSON output into a :class:`~flask.Response`
            object with the :mimetype:`application/json` mimetype.  For convenience, it
            also converts multiple arguments into an array or multiple keyword arguments
            into a dict.  This means that both ``jsonify(1,2,3)`` and
            ``jsonify([1,2,3])`` serialize to ``[1,2,3]``.
    
            For clarity, the JSON serialization behavior has the following differences
            from :func:`dumps`:
    
            1. Single argument: Passed straight through to :func:`dumps`.
            2. Multiple arguments: Converted to an array before being passed to
               :func:`dumps`.
            3. Multiple keyword arguments: Converted to a dict before being passed to
               :func:`dumps`.
            4. Both args and kwargs: Behavior undefined and will throw an exception.
    
            Example usage::
    
                from flask import jsonify
    
                @app.route('/_get_current_user')
                def get_current_user():
                    return jsonify(username=g.user.username,
                                   email=g.user.email,
                                   id=g.user.id)
    
            This will send a JSON response like this to the browser::
    
                {
                    "username": "admin",
                    "email": "admin@localhost",
                    "id": 42
                }
    
    
            .. versionchanged:: 0.11
               Added support for serializing top-level arrays. This introduces a
               security risk in ancient browsers. See :ref:`json-security` for details.
    
            This function's response will be pretty printed if the
            ``JSONIFY_PRETTYPRINT_REGULAR`` config parameter is set to True or the
            Flask app is running in debug mode. Compressed (not pretty) formatting
            currently means no indents and no spaces after separators.
    
            .. versionadded:: 0.2
            """
    
            indent = None
            separators = (',', ':')
    
            if current_app.config['JSONIFY_PRETTYPRINT_REGULAR'] or current_app.debug:
                indent = 2
                separators = (', ', ': ')
    
            if args and kwargs:
                raise TypeError('jsonify() behavior undefined when passed both args and kwargs')
            elif len(args) == 1:  # single args are passed directly to dumps()
                data = args[0]
            else:
                data = args or kwargs
    
            return current_app.response_class(
                json.dumps(data, indent=indent, separators=separators, sort_keys=False) + '\n',
                mimetype=current_app.config['JSONIFY_MIMETYPE']
            )

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