Python中，在json字符串和dict字典变量之间转换，用json
但是最近用了Flask的json，去把dict转换为字符串：
from flask import json def jsonToStr(jsonDict, indent=2): return json.dumps(jsonDict, indent=2, ensure_ascii=False) |
现在需要搞清楚：
在Flask中，如何把json字符串转换为对应的dict变量。
How to manage JSON requests using Flask for Python Code Example – Runnable
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API — Flask Documentation (0.11)
try: import simplejson as json except ImportError: import json |
不用再去导入python的json了。
直接用Flask中导入的json，同样有各种功能，包括loads：
flask.json.dumps(obj, **kwargs) Serialize obj to a JSON formatted str by using the application’s configured encoder (json_encoder) if there is an application on the stack. This function can return unicode strings or ascii-only bytestrings by default which coerce into unicode strings automatically. That behavior by default is controlled by the JSON_AS_ASCII configuration variable and can be overridden by the simplejson ensure_ascii parameter. flask.json.dump(obj, fp, **kwargs) Like dumps() but writes into a file object. flask.json.loads(s, **kwargs) Unserialize a JSON object from a string s by using the application’s configured decoder (json_decoder) if there is an application on the stack. flask.json.load(fp, **kwargs)¶ Like loads() but reads from a file object. |
【总结】
然后用：
from flask import json def strToJson(jsonStr): jsonDict = json.loads(jsonStr, encoding="utf-8") gLog.debug("jsonStr=%s, jsonDict=%s", jsonStr, jsonDict) return jsonDict |
把传入的json字符串，转换为字典变量：
messageStr={ "type" : "User", "id" : "user-4d51faba-97ff-4adf-b256-40d7c9c68103", "event" : "SaveLocation", "data" : { "longitude": 31.2927, "latitude": 120.72, "shortStr": "双湖湾花园III期", "fullStr": "江苏省苏州市吴中区西华林街双湖湾花园III期" } }, messageDict={u’data’: {u’latitude’: 120.72, u’fullStr’: u’\u6c5f\u82cf\u7701\u82cf\u5dde\u5e02\u5434\u4e2d\u533a\u897f\u534e\u6797\u8857\u53cc\u6e56\u6e7e\u82b1\u56edIII\u671f’, u’longitude’: 31.2927, u’shortStr’: u’\u53cc\u6e56\u6e7e\u82b1\u56edIII\u671f’}, u’type’: u’User’, u’id’: u’user-4d51faba-97ff-4adf-b256-40d7c9c68103′, u’event’: u’SaveLocation’} |
注：
此处Flask中的json，内部的逻辑是：
try: import simplejson as json except ImportError: import json |
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