Conversion of JSON strings to Java objects

Jsonlib Classic article: http://json-lib.sourceforge.net/xref-test/net/sf/json/TestJSONObject.html

Introduce the appropriate package

Json-lib-2.2-jdk15.jar

Import Net.sf.json.JSONArray; Import Net.sf.json.JSONObject;

1.//Convert the list of Java objects to a JSON object array and turn to a string

Jsonarray array = jsonarray.fromobject(userlist); String jsonstr = array.tostring ();

2.//Converts a Java object into a JSON object and converts it into a string

Jsonobject object = jsonobject.fromobject(invite); Log4jInit.ysulogger.debug (Object.ToString ());

3.//converting a JSON string to an array of Java objects

  String personstr = Getrequest (). GetParameter ("Persons");   jsonarray json = Jsonarray.fromobject ( PERSONSTR);   List<InvoidPerson> persons = (list<invoidperson>) Jsonarray.tocollection (JSON, nvoidperson.class); 4.//converts a JSON string to a Java object

  str = "{\" lendperson\ ": \" John Doe \ ", \" lendcompany\ ": \" limited \ ", \" checkperson\ ": \" John Doe \ ",   \" lenddate\ ": \" 2010-07-19t00:00:00\ ", \" lendcounts\ ": 4,\"   passports\ ": [{\" passportid\ ": \" d\ ", \" name\ ": \" Li Shuichang \ ", \" Passporttype\ ": \" K\ "},   {\" passportid\ ": \" k9051\ ", \" name\ ": \" Li ping \ ", \" passporttype\ ": \" K\ "},    {\ "passportid\": \ "k90517\", \ "name\": \ "Yuan Han mei \", \ "passporttype\": \ "K\"},   {\ "passportid\": \ " K905199\ ", \" name\ ": \" He Ming \ ", \" passporttype\ ": \" K\ "}]}";    jsonobject jsonobject = Jsonobject.fromobject (str);   passportlendsentity passportlends = null;   try {   //Gets a JSON array    jsonarray array = Jsonobject.getjsonarray (" Passports ");    //converting JSON arrays to list<passportforlendsentity> generics    List< passportforlendsentity> list = new arraylist<passportforlendsentity> ();    for (int i = 0; i < array.size (); i++) {    &NBSP;&NBsp;          Jsonobject object = (jsonobject) array.get (i);                passportforlendsentity Passport = ( passportforlendsentity)Jsonobject.tobean(object, Passportforlendsentity.class);             if (passport! = null) {list.add (passport); }}//convert passportlendsentity entity class Passportlends = (passportlendsentity)Jsonobject.tobean(Jsonobject, Passportlendsentity.class);

Conversion of JSON strings to Java objects