How to use Fastjson to parse JSON-formatted data and generate JSON-formatted data

Because the project uses the data in the JSON format, search on the internet to Ali's Fastjson more useful, hereby record Fastjson usage, for later query.

Decode

First create a JSON parsing class:

 Public class jsonparser {    privateint  devid;
     Public int Getdevid () {        return  devid;    }      Public void setdevid (int  devid) {        this. devid = devid;    }} 

Create a corresponding object where parsing is needed:

String str = "{" Devid ": 12345}";
Jsonparser jsonstring = Json.parseobject (str, jsonparser.  Class);

The str parameter is a string that needs parsing

Then simply call the getter () method of the object's response to get the value corresponding to the key:

int devid = Jsonstring.getdevid ();
System.out.println (devid);//12345

Encode

Also create a corresponding JSON class (for the sake of simplicity, take the example of the above parsing class)

Then create an object and call the appropriate setter () method:

New Jsonpaser (); Json.setdevid (12345);

After setting the value, call the JSON Library's toJSONString () method to generate the JSON-formatted data by passing in the object:

String str = json.tojsonstring (JSON); System.out.println (str);  {"Devid": 12345}

PS: Through the test found that the function of Fastjson is more powerful, JSON format data is not fully compliant and can be resolved smoothly.

such as "{devid:12345}", "{" Devid ": 12345}", "{" Devid ":" 12345 "}" can parse correctly

How to use Fastjson to parse JSON-formatted data and generate JSON-formatted data