simplest way to parse JSON string
How can I navigate JSON string from one key to another nested key and get the value? I have the following string
{ "data" : { "current_condition" : [ { "cloudcover" : "75",
"humidity" : "29",
"observation_time" : "07:59 PM",
"precipMM" : "0.0",
"pressure" : "1011",
"temp_C" : "19",
"temp_F" : "67",
"visibility" : "16",
"weatherCode" : "116",
"weatherDesc" : [ { "value" : "Partly Cloudy" } ],
"weatherIconUrl" : [ { "value" : "http://www.worldweatheronline.com/images/wsymbols01_png_64/wsymbol_0002_sunny_intervals.png" } ],
"winddir16Point" : "N",
"winddirDegree" : "350",
"windspeedKmph" : "26",
"windspeedMiles" : "16"
} ],
"request" : [ { "query" : "01801",
"type" : "Zipcode"
} ],
"weather" : [ { "date" : "2011-05-09",
"precipMM" : "0.0",
"tempMaxC" : "19",
"tempMaxF" : "65",
"tempMinC" : "10",
"tempMinF" : "50",
"weatherCode" : "113",
"weatherDesc" : [ { "value" : "Sunny" } ],
"weatherIconUrl" : [ { "value" : "http://www/images/wsymbols01_png_64/wsymbol_0001_sunny.png" } ],
"winddir16Point" : "NNW",
"winddirDegree" : "348",
"winddirection" : "NNW",
"windspeedKmph" : "24",
"windspeedMiles" : "15"
},
{ "date" : "2011-05-10",
"precipMM" : "0.1",
"tempMaxC" : "13",
"tempMaxF" : "56"开发者_如何学编程,
"tempMinC" : "12",
"tempMinF" : "53",
"weatherCode" : "122",
"weatherDesc" : [ { "value" : "Overcast" } ],
"weatherIconUrl" : [ { "value" : "http://www/images/wsymbols01_png_64/wsymbol_0004_black_low_cloud.png" } ],
"winddir16Point" : "NNE",
"winddirDegree" : "12",
"winddirection" : "NNE",
"windspeedKmph" : "31",
"windspeedMiles" : "19"
}
]
} }
So I answer my own question: In case someone else want to get value quickly: This is what I was looking for.
JSONObject j = new JSONObject(strResponse);
String weatherDesc = jObject.getJSONObject("data").getJSONArray("weather").getJSONObject(0).getJSONArray("weatherDesc").getJSONObject(0).getString("value");
There are JSON libraries in pretty much any language. If you suggest one, I might be able to point you to something.
In the meantime, here are a few:
- Perl JSON library
- Python's is built in
- Javascript serializes its objects in JSON so it's super easy
- C# library -- also see C# - parsing json formatted data into nested hashtables
- Here's the Android JSON reference
And so on. I suggest a quick google for the language of your choice.
Generally speaking you will use a library that is already built specifically for you language, what language are you trying to read the data in? Many languages have a couple of libraries available, some languages may have built in support, like JavaScript.
if you just need to understand the data, it is pretty readable...
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