Use of JSON data Fastjson parsing (i)

Source: Internet
Author: User
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It is said that Fastjson is currently the fastest repository for parsing JSON data, and is an open source library developed by people. Top, pay the official website: http://code.alibabatech.com/wiki/pages/viewpage.action?pageId=2424946

To use Fastjson, you first need to download the corresponding jar file, which can be downloaded on the official website.
Attached to the first example of beginners, a lot of advice:

{"    statuses": [        {         "id": 912345678901,         "text": "How does I stream JSON in Java?",         "geo": null,         " User ": {"        name ":" Json_newb ",        " Followers_count ":" $ "          },                  {         " id ": 777777777888,         " Text ":" Dfngsdnglnsldfnsl ",         " geo ": null,         " user ": {        " name ":" DSFGPD ",        " Followers_count ": 24              }          }     ]}


Allbean's Bean class:

Package Com.lee.jsontobean;public class Allbean {    private long ID;    private String text;    Private String Geo;    Private UserBean UserBean;    Public long GetId () {        return ID;    }    public void SetId (long id) {        this.id = ID;    }    Public String GetText () {        return text;    }    public void SetText (String text) {        this.text = text;    }    Public String Getgeo () {        return geo;    }    public void Setgeo (String Geo) {        This.geo = Geo;    }    Public UserBean Getuserbean () {        return UserBean;    }    public void Setuserbean (UserBean UserBean) {        This.userbean = UserBean;    }    }


Userbean's Bean class:

Package Com.lee.jsontobean;public class UserBean {    private String name;    private int followers_count;    Public String GetName () {        return name;    }    public void SetName (String name) {        this.name = name;    }    public int Getfollowers_count () {        return followers_count;    }    public void Setfollowers_count (int followers_count) {        this.followers_count = Followers_count;    }}


Parsing class Jsonbean:

Package Com.lee.jsontobean;import Java.io.file;import Java.io.fileinputstream;import java.io.FileNotFoundException ; Import Java.io.ioexception;import Java.util.list;import Javax.swing.text.badlocationexception;import Javax.swing.text.defaultstyleddocument;import Javax.swing.text.rtf.rtfeditorkit;import Com.alibaba.fastjson.JSON Import Com.alibaba.fastjson.jsonarray;import com.alibaba.fastjson.jsonobject;/** * {"statuses": [{"id ": 912345678901," text ":" How does I stream JSON in Java? "," geo ": null," user ": {" name ":" J         Son_newb "," Followers_count ": ()}, {" id ": 777777777888,              "Text": "Dfngsdnglnsldfnsl", "geo": null, "user": {"name": "DSFGPD", "Followers_count": 24    }}]} * */public class Jsonbean {Rtfeditorkit rtf;    Defaultstyleddocument DSD;    String text; public static void Main (string[] args) {JsonBean bean = new Jsonbean ();        Convert the string to a JSON object because my JSON data is first the JSON object Jsonobject jobj = Json.parseobject (bean.readrtf (New File ("Json.rtf"));        Then there is jsonarray, which can be based on my JSON data to know jsonarray arr = Jobj.getjsonarray ("statuses");        According to the Bean class to each JSON array of items list<allbean> Listbeans = Json.parsearray (arr.tostring (), allbean.class); Traverse for (Allbean Bean_: Listbeans) {//My demo JSON data gets the first layer of data System.out.println (Bean_.gett            EXT ());            System.out.println (Bean_.getid ());        My demo JSON data gets the second layer of data System.out.println (Bean_.getuserbean (). Getfollowers_count ()); }}//Because I put the JSON data into the RTF file, which is the JSON data to read the RTF file, converted to the string public string Readrtf (File in) {rtf=new rtfeditork          It ();          Dsd=new defaultstyleddocument ();              try {rtf.read (new FileInputStream (in), DSD, 0);          Text = new String (dsd.gettext (0, Dsd.getlength ())); } catch (FilenotfoundexCeption e) {//TODO auto-generated catch block E.printstacktrace ();          } catch (IOException e) {//TODO auto-generated catch block E.printstacktrace ();          } catch (Badlocationexception e) {//TODO auto-generated catch block E.printstacktrace ();      } return text; }  }


Finally, attach the program code: Fastjsontest.zip

From:http://www.cnblogs.com/lee0oo0/archive/2013/05/08/3066371.html

Use of JSON data Fastjson parsing (i)

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