使用 json 模块解码 json 字符串时出现问题
联系服务器后，我得到以下字符串作为响应
{"kind": "t2", "data": {"has_mail": null, "name": "shadyabhi", "created": 1273919273.0, "created_utc": 1273919273.0, "link_karma": 1343, "comment_karma": 301, "is_gold": false, "is_mod": false, "id": "425zf", "has_mod_mail": null}}
，该字符串在我的脚本中存储为 type 'str' 。
现在，当我尝试使用 json.dumps(mystring, sort_keys=True, indent=4) 对其进行解码时，我得到了这个。
"{\"kind\": \"t2\", \"data\": {\"has_mail\": null, \"name\": \"shadyabhi\", \"created\": 1273919273.0, \"created_utc\": 1273919273.0, \"link_karma\": 1343, \"comment_karma\": 301, \"is_gold\": false, \"is_mod\": false, \"id\": \"425zf\", \"has_mod_mail\": null}}"
应该是这样的
shadyabhi@archlinux ~ $ echo '{"kind": "t2", "data": {"has_mail": "null", "name": "shadyabhi", "created": 1273919273.0, "created_utc": 1273919273.0, "link_karma": 1343, "comment_karma": 299, "is_gold": "false", "is_mod": "false", "id": "425zf", "has_mod_mail": "null"}}' | python2 -mjson.tool
{
"data": {
"comment_karma": 299,
"created": 1273919273.0,
"created_utc": 1273919273.0,
"has_mail": "null",
"has_mod_mail": "null",
"id": "425zf",
"is_gold": "false",
"is_mod": "false",
"link_karma": 1343,
"name": "shadyabhi"
},
"kind": "t2"
}
shadyabhi@archlinux ~ $
那么，到底出了什么问题呢？
After contacting a server I get the following strings as response
{"kind": "t2", "data": {"has_mail": null, "name": "shadyabhi", "created": 1273919273.0, "created_utc": 1273919273.0, "link_karma": 1343, "comment_karma": 301, "is_gold": false, "is_mod": false, "id": "425zf", "has_mod_mail": null}}
which is stored as type 'str' in my script.
Now, when I try to decode it using json.dumps(mystring, sort_keys=True, indent=4), I get this.
"{\"kind\": \"t2\", \"data\": {\"has_mail\": null, \"name\": \"shadyabhi\", \"created\": 1273919273.0, \"created_utc\": 1273919273.0, \"link_karma\": 1343, \"comment_karma\": 301, \"is_gold\": false, \"is_mod\": false, \"id\": \"425zf\", \"has_mod_mail\": null}}"
which should really be like this
shadyabhi@archlinux ~ $ echo '{"kind": "t2", "data": {"has_mail": "null", "name": "shadyabhi", "created": 1273919273.0, "created_utc": 1273919273.0, "link_karma": 1343, "comment_karma": 299, "is_gold": "false", "is_mod": "false", "id": "425zf", "has_mod_mail": "null"}}' | python2 -mjson.tool
{
"data": {
"comment_karma": 299,
"created": 1273919273.0,
"created_utc": 1273919273.0,
"has_mail": "null",
"has_mod_mail": "null",
"id": "425zf",
"is_gold": "false",
"is_mod": "false",
"link_karma": 1343,
"name": "shadyabhi"
},
"kind": "t2"
}
shadyabhi@archlinux ~ $
So, what is it that's going wrong?
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您需要先加载它，然后才能转储它。试试这个：
要添加更多细节 - 您正在接收一个字符串，然后要求 json 库将其转储为字符串。这没有多大意义。您首先需要做的是将数据放入更有意义的容器中。通过调用 loads，您可以获取返回的字符串值并将其解析为实际的 Python 字典。然后，您可以将该数据传递到 dumps，它会使用您请求的格式输出字符串。
You need to load it before you can dump it. Try this:
To add a bit more detail - you're receiving a string, and then asking the json library to dump it to a string. That doesn't make a great deal of sense. What you need to do first is put the data into a more meaningful container. By calling
loadsyou take the string value of the return and parse it into an actual Python Dictionary. Then, you can pass that data todumpswhich outputs a string using your requested formatting.你把事情搞倒了。如果要将字符串转换为数据结构，则需要使用 json.loads(thestring)。
json.dumps()用于将数据结构转换为 json 编码字符串。You have things backwards. If you want to convert a string to a data structure you need to use
json.loads(thestring).json.dumps()is for converting a data structure to a json encoded string.您应该
转储一个对象（如字典），然后该对象变成一个字符串，而不是相反......请参阅此处。请改用 json.loads() 。
You are supposed to
dumpan object (like a dictionary) which then becomes a string, not the other way round... see here.Use
json.loads()instead.您需要
json.loads。dumps方法用于另一种方式（将对象转储为 json 字符串）。You want
json.loads. Thedumpsmethod is for going the other way (dumping an object to a json string).