Converting between Java objects and JSON objects

A good example of the mutual transfer of Java objects and JSON objects:

1  Packagecom.kenneth.test;2 3 Importjava.util.ArrayList;4 Importjava.util.Collection;5 ImportJava.util.Iterator;6 Importjava.util.List;7 8 ImportNet.sf.json.JSONArray;9 ImportNet.sf.json.JSONObject;Ten  One /** A * Created by Administrator on 2016/2/1 0001. -  */ -  Public classJsonandjava { the  -      Public Static voidMain (string[] args) { - Testjsonbean (); - Testjsonattribute (); + Testjsonarray (); -     } +  A@SuppressWarnings ("Rawtypes") at     Private Static voidTestjsonarray () { -Student Student1 =NewStudent (); -Student1.setid (1); -Student1.setname ("Jag"); -Student1.setsex ("Man"); -Student1.setage (25); inStudent1.sethobby (Newstring[]{"basketball", "game"}); -  toStudent Student2 =NewStudent (); +Student2.setid (2); -Student2.setname ("Tom"); theStudent2.setsex ("Woman"); *Student2.setage (23); $Student2.sethobby (Newstring[]{"Surfing", "Running"});Panax Notoginseng  -list<student> list =NewArraylist<student>(); the List.add (student1); + List.add (student2); A  theJsonarray Jsonarray =jsonarray.fromobject (list); + System.out.println (jsonarray.tostring ()); -  $Jsonarray new_jsonarray=Jsonarray.fromobject (Jsonarray.toarray ()); $ //Collection java_collection=jsonarray.tocollection (new_jsonarray); - //if (java_collection!=null &&!java_collection.isempty ()) - //        { the //Iterator it=java_collection.iterator (); - //While (It.hasnext ())Wuyi //            { the //jsonobject Jsonobj=jsonobject.fromobject (It.next ()); - //Student stu= (Student) Jsonobject.tobean (jsonobj,student.class); Wu //System.out.println (Stu.getname ()); - //            } About //        } $     } -  -     Private Static voidTestjsonattribute () { -         /** A * Create a JSON object and set properties for the object +          */ theJsonobject jsonobj =NewJsonobject (); -Jsonobj.put ("Int_att", 25);//adding an int type property $Jsonobj.put ("String_att", "str");//Add string Property theJsonobj.put ("Double_att", 12.25);//Add double Type property theJsonobj.put ("Boolean_att",true);//Adding a Boolean property the         //Adding a Jsonobject Type property theJsonobject Jsonobjson =NewJsonobject (); -Jsonobjson.put ("id", 1); inJsonobjson.put ("name", "Tom"); theJsonobj.put ("Jsonobject_att", Jsonobjson); the         //Adding a Jsonarray Type property AboutJsonarray Jsonarray =NewJsonarray (); theJsonarray.add ("Array0"); theJsonarray.add ("Array1"); theJsonarray.add ("Array2"); +Jsonarray.add ("Array3"); -Jsonobj.put ("Jsonarray_att", Jsonarray); the System.out.println (jsonobj.tostring ());BayiSystem.out.println ("Int_att:" +jsonobj.getint ("Int_att")); theSystem.out.println ("String_att:" +jsonobj.getstring ("String_att")); theSystem.out.println ("Double_att:" +jsonobj.getdouble ("Double_att")); -System.out.println ("Boolean_att:" +jsonobj.getboolean ("Boolean_att")); -System.out.println ("Jsonobject_att:" +jsonobj.getjsonobject ("Jsonobject_att")); theSystem.out.println ("Jsonarray_att:" +jsonobj.getjsonarray ("Jsonarray_att")); the     } the  the     /** - * Java objects and JSON objects are converted to each other the      */ the     Private Static voidTestjsonbean () { the         /**94 * Create Java Objects the          */ theStudent Student =NewStudent (); theStudent.setid (1);98Student.setname ("Jag"); AboutStudent.setsex ("Man"); -Student.setage (25);101Student.sethobby (Newstring[]{"basketball", "surfing the Internet", "Running", "games"});102         /**103 * Java objects are converted to JSON objects and get JSON object properties104          */ theJsonobject Jsonstu =Jsonobject.fromobject (student);106System.out.println ("bean-106:" +jsonstu.tostring ());107System.out.println ("bean-107:" +jsonstu.getjsonarray ("hobby"));108         /**109 * JSON objects are converted to Java objects and get Java object Properties the          */111Student stu = (Student) Jsonobject.tobean (Jsonstu, Student.class); the System.out.println (Stu.getname ());113         /** the * Create JSON object the          */ theJsonobject jsonobj =NewJsonobject ();117Jsonobj.put ("id", 1);118Jsonobj.put ("name", "Zhang Yong");119Jsonobj.put ("Sex", "male"); -Jsonobj.put ("Age", 24);121         //jsonobj.put ("hobby", New string[]{"Internet", "games", "Running", "Music"});122         //System.out.println (jsonobj.tostring ());123         /**124 * JSON objects are converted to Java objects the          */126Student stud = (Student) Jsonobject.tobean (jsonobj,student.class);127 System.out.println (Stud.getname ()); -     }129}

Converting between Java objects and JSON objects