Java object and JSON Data transformation implementation 3-using the Jackson implementation

Test code:

Package Com.yanek.util.json;import Java.io.ioexception;import Java.io.stringwriter;import java.util.ArrayList; Import Java.util.list;import Com.fasterxml.jackson.core.jsonfactory;import Com.fasterxml.jackson.core.jsongenerator;import Com.fasterxml.jackson.core.jsonparseexception;import Com.fasterxml.jackson.databind.jsonmappingexception;import Com.fasterxml.jackson.databind.objectmapper;public Class Jacksonutil {/** * @param args */public static void main (string[] args) {Hotel h1=new Hotel (); H1.setid (1); h1.setname ("name1"); Hotel H2=new (); H2.setid (2); H2.setname ("name2"); Roomtypevo t1=new Roomtypevo () t1.setprice ("a") T1.settypeid (1); T1.settypename ("nnn1"); List<roomtypevo> roomtypevos=new arraylist<roomtypevo> (); Roomtypevos.add (t1); Roomtypevos.add (t1); H1.setroomtypevos (Roomtypevos); Hotel=new Hotel (); try {System.out.println ("Json1:::" +bean2json (H1)); String S=bean2json (H1); Hotel=json2bean (S,hotel.class); System.out.println ("Json2:::" +bean2json (hotel)); System.out.prinTLN ("Json3:::" +bean2json (Roomtypevos)); String S2=bean2json (Roomtypevos); List<roomtypevo> roomtypevos2=new arraylist<roomtypevo> (); Roomtypevos2=json2bean (S2,list.class); System.out.println ("Json4:::" +bean2json (ROOMTYPEVOS2));} catch (IOException e) {//TODO auto-generated catch Blocke.printstacktrace ();}}        public static String Bean2json (Object obj) throws IOException {Objectmapper mapper = new Objectmapper ();        StringWriter SW = new StringWriter ();        Jsongenerator Gen = new Jsonfactory (). Createjsongenerator (SW);        Mapper.writevalue (gen, obj);        Gen.close ();    return sw.tostring (); } public static <T> T Json2bean (String jsonstr, Class<t> objclass) throws Jsonparseexception, Js        Onmappingexception, IOException {objectmapper mapper = new Objectmapper ();    Return Mapper.readvalue (Jsonstr, objclass); }}

The output is as follows:

json1:::{"id": 1, "name": "Name1", "Roomtypevos": [{"typeID": 1, "TypeName": "Nnn1", "Price": "},{", "typeID": 1, " TypeName ":" Nnn1 "," Price ":"}]}json2:::{"," id ": 1," name ":" Name1 "," Roomtypevos ": [{" typeID ": 1," TypeName ":" Nnn1 "," Price ":"},{"typeID": 1, "TypeName": "Nnn1", "Price": "}]}json3:::[{", "typeID": 1, "TypeName": "Nnn1", "Price": "20"} , {"typeID": 1, "TypeName": "Nnn1", "Price": "}]json4:::[{", "typeID": 1, "TypeName": "Nnn1", "Price": ""},{"," typeID ": 1, "TypeName": "Nnn1", "Price": "20"}]

Related entity classes:

Package Com.yanek.util.json;import Java.util.list;public class Hotel {public list<roomtypevo> Getroomtypevos () { return Roomtypevos;} public void Setroomtypevos (list<roomtypevo> roomtypevos) {roomtypevos = Roomtypevos;} Private list<roomtypevo> roomtypevos;public int getId () {return ID;} public void setId (int id) {this.id = ID;} Public String GetName () {return name;} public void SetName (String name) {this.name = name;} private int id;private String name;} Package Com.yanek.util.json;public class Roomtypevo {public int gettypeid () {return typeid;} public void Settypeid (int typeid) {This.typeid = typeID;} Public String Gettypename () {return typename;} public void Settypename (String typename) {this.typename = typename;} Public String GetPrice () {return price;} public void Setprice (String price) {this.price = Price;} private int typeid;private string typename;private string price;}