Jackson vs Fastjson vs Gson

Package com.dj.json.model;import java.util.date;import java.util.list;import java.util.map ;p ublic class people {private string name;private fullname fullname;private  int age;private Date birthday;private List<String> hobbies;private  map<string, string> clothes;private list<people> friends;          // auto get set}public class fullname { private string firstname;private string middlename;private string lastname;  // auto get set}package com.dj.json.utils.fastjson;import  Com.alibaba.fastjson.json;import com.alibaba.fastjson.serializer.serializerfeature;public class  fastjsonutils {public static string bean2json (object obj)  { return  json.tojsonstring (obj);} public static  String bean2json (Object obj,string dateformat)  {return  Json.tojsonstringwithdateformat (Obj, dateformat, serializerfeature.prettyformat); }public  Static <t> t json2bean (String jsonstr, class<t> objclass)  { Return json.parseobject (Jsonstr, objclass);}} public class gsonutils {private static gson gson = new  Gsonbuilder (). Create ();p Ublic static string bean2json (object obj)  {return  Gson.tojson (obj);} Public static <t> t json2bean (String jsonstr, class<t> objclass )  {return gson.fromjson (Jsonstr, objclass);} Public static string jsonformatter (STRING&NBSP;UGLYJSONSTR)  {Gson gson =  New gsonbuilder (). setprettyprinting (). Create (); Jsonparser jp = new jsonparser (); Jsonelement je = jp.parse (UGLYJSONSTR); String prettyjsonstring = gson.tojson (JE); return prettyjsonstring;}} package com.dj.json.utils.jackson;import java.nio.charset.charset;import  java.text.simpledateformat;import java.util.concurrent.concurrentlinkedqueue;import  org.apache.commons.lang.stringutils;import org.codehaus.jackson.map.deserializationconfig;import  Org.codehaus.jackson.map.objectmapper;import org.codehaus.jackson.map.ser.stdserializerprovider;import  org.codehaus.jackson.map.ser.impl.SimpleBeanPropertyFilter;import  org.codehaus.jackson.map.ser.impl.simplefilterprovider;import  org.codehaus.jackson.map.ser.std.nullserializer;import org.codehaus.jackson.type.typereference;/** *   @description: jsonutils  Tools  *  @version  Ver 1.0 *  @author   <a href= "mailto:[email protected" >dejianliu</a> *  @Date  2013-4-23  Afternoon 12:32:29 */public class JsonUtils {private static final Charset DEFAULT_CHARSET =  Charset.forname ("UTF-8"); static boolean ispretty = false;private static final  String DEFAULT_DATE_FORMAT =  "Yyyy-mm-dd hh:mm:ss"; static stdserializerprovider  sp = new stdserializerprovider (); Static {sp.setnullvalueserializer ( nullserializer.instance);}  static simpledateformat defaultdateformat = new simpledateformat (DEFAULT_DATE_ FORMAT);p Ublic static concurrentlinkedqueue<objectmapper> mapperqueue = new  ConcurrentLinkedQueue<ObjectMapper> ();p ublic static objectmapper getobjectmapper ()  {objectmapper mapper = mapperqueue.poll (); if (mapper == null)  {mapper  = new  objectmapper (null, sp, null);} Return mapper;} Public static void returnmapper (ObJectmapper mapper)  {if (mapper != null)  {mapperqueue.offer (mapper);}} Public static boolean ispretty ()  {return ispretty;} Public static void setpretty (Boolean ispretty)  {JsonUtils.isPretty =  Ispretty;} /** * json strings are converted to Java generic objects, which can be of various types, and this method is the most powerful. usage See test cases.  *  *  @param  <T> *  @param  jsonString *             json Strings  *  @param  tr *             typereference, such as: new typereference<  List<FamousUser> > () {} *  @return  list Object list  */@SuppressWarnings (" Unchecked ") Public static <t> t json2genericobject (string jsonstring, Typereference<t> tr, string dateformat)  {if  (Stringutils.isnotempty (jsonString) )  {objectmapper  Mapper = getobjectmapper (); try {//objectmapper objectmapper = new  Objectmapper (Null, sp, null); Mapper.disable (DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES ); if  (Stringutils.isblank (DateFormat))  {mapper.setdateformat (Defaultdateformat);}  else {SimpleDateFormat sdf =  (SimpleDateFormat)  defaultdateformat.clone (); Sdf.applypattern (DateFormat); Mapper.setdateformat (SDF); }return  (T)  mapper.readvalue (jsonString , &NBSP;TR);}  catch  (exception e)  { e.printstacktrace ();}  finally {returnmapper (mapper);}} Return null;} /** * json string to Java object  *  *  @param  jsonString *  @param  c  *  @return  */public static <t> t json2object (string jsonstring,  Class<t> c,string dateformat)  {if  (Stringutils.isnotempty (jsonstring))  {ObjectMapper mapper = getobjectmapper (); try {//objectmapper objectmapper =  New objectmapper (Null, sp, null); Mapper.disable (DeserializationConfig.Feature.FAIL_ON_UNKNOWN_ PROPERTIES); if  (Stringutils.isblank (DateFormat))  {mapper.setdateformat (Defaultdateformat);}  else {SimpleDateFormat sdf =  (SimpleDateFormat)  defaultdateformat.clone (); Sdf.applypattern (DateFormat); Mapper.setdateformat (SDF);} return  (T) mapper.readvalue (jsonstring, c);}  catch  (exception e)  {e.printstacktrace ();}  finally {returnmapper (mapper);}} Return null;} /** * java object to JSON string  *  *  @param  object *              target Objects  *  @param  executeFields *              exclude fields  *  @param  includefields *              contains fields  *  @param  dateformat *              time formatting  *  @param  ispretty  *             whether to format print  default false  *  @return  */public static string tojson (object object, string[]  Executefields,string[] includefields, string dateformat)  {string jsonstring =   ""; Objectmapper mapper = getobjectmapper (); try {bidbeanserializerfactory  bidbeanfactory = bidbeanserializerfactory.instance;if  (Stringutils.isblank (dateFormat))  { Mapper.setdateformat (Defaultdateformat);}  else {SimpleDateFormat sdf =  (SimpleDateFormat)  defaultdateformat.clone (); Sdf.applypattern (DateFormat); Mapper.setdateformat (SDF);} if  (includefields != null)  {String filterId =  "Includefilter"; Mapper.setfilters (New simplefilterprovider (). AddFilter (Filterid, simplebeanpropertyfilter.filteroutallexcept (Includefields))); Bidbeanfactory.setfilterid (Filterid); mapper.setserializerfactory (bidbeanfactory);}  else if  (Includefields == null && executefields != null)  {String filterId =  "Executefilter"; Mapper.setfilters (New simplefilterprovider (). AddFilter (Filterid, simplebeanpropertyfilter.serializeallexcept (Executefields))); Bidbeanfactory.setfilterid (Filterid); mapper.setserializerfactory (bidbeanfactory);}  if  (Ispretty)  {jsonstring = mapper.writerwithdefaultprettyprinter (). Writevalueasstring (object);}  else {jsonstring = mapper.writevalueasstring (object);}}  catch  (exception e)  {e.printstacktrace ();}  finally {returnmapper (mapper);} return jsonstring;}  }package com.dj.json.test;import java.util.arraylist;import java.util.hashmap;import  java.util.list;import java.util.map;import com.dj.json.model.fullname;import  com.dj.json.model.people;import com.dj.json.utils.fastjson.fastjsonutils;import  Serialization of com.dj.json.utils.jackson.jacksonutils;import com.dj.json.utils.jackson.jsonutils;/** *gson  :1000000  pen Data   cost :21587  milliseconds    average:46324.176587761154  pen/sec  *jackson   Serializing:1000000  pen data   cost :9284  milliseconds    average:107712.19302024988  pen/sec  * fastjson  serializing:1000000  pen data   cost :9180  milliseconds    average:108932.46187363834  pen/ SEC  *  @version  : Ver 1.0 *  @author:  <a href= "mailto:[email  Protected] ">liudejian</a> *  @date: 2014-12-10  Morning 10:50:27 */public class  JsonSer {private static People p;Private static int num = 1000000;private static people createapeople ( String name, list<people> friends)  {People newPeople = new  People (); Newpeople.setname (name); Newpeople.setfullname (New fullname ("Xxx_first",  "Xxx_middle", "xxx_ Last ")); Newpeople.setage (24); List<string> hobbies = new arraylist<string> (); Hobbies.add ("basketball"); Hobbies.add (" Swimming "); Hobbies.add (" coding "); Newpeople.sethobbies (hobbies); Map<string, string> clothes = new hashmap<string, string> (); Clothes.put ("coat",  "Nike"), Clothes.put ("trousers",  "Adidas"), Clothes.put ("Shoes",  "Anta"); Newpeople.setclothes (clothes); Newpeople.setfriends (friends); return newpeople;} Public static void main (String[] args)  throws Exception {List<People>  friends = new ArrayList<People> (); Friends.add (CreateapeOple ("Xiaoming",  null)), Friends.add (Createapeople ("Tony",  null)), Friends.add (Createapeople ("Chen Xiao",  NULL));p  = createapeople ("Shao classmate",  friends);long starttime =  System.currenttimemillis ();for  (int i = 0; i < num; i++)  {// Gsonutils.bean2json (P);// jacksonutils.bean2json (P); Jsonutils.tojson (p,null, null,  "Yyyy-mm-dd");// fastjsonutils.bean2json (P, "Yyyy-MM-dd");} Long endtime = system.currenttimemillis ();long dif = endtime -  StartTime; System.out.println ("Serialization: + num+ "   pen data   cost : "+ dif+ "   milliseconds   "+   "  Average:" +  (double.valueof (num)/ double.valueof (double.valueof (DIF)  / 1000)  +   "  PEN/sec");}} import java.util.arraylist;import java.util.hashmap;import java.util.list;import  Java.util.map;import com.dj.json.model.fullname;import com.dj.json.modEl. people;import com.dj.json.utils.jackson.jsonutils;/** *gson    deserialization of:1000000  pen data   cost :21456  milliseconds    Average:46607.00969425802  pen/sec  *JACKSON   deserialization :1000000  pen Data   cost :13362  milliseconds    average:74839.095943721  pen/sec   * fastjson   deserializing:1000000  pen data   cost :36814  milliseconds    average: 27163.579073178684   PEN/sec  *  @version  : Ver 1.0 *  @author:  <a href= "mailto:[ Email protected] ">liudejian</a> *  @date: 2014-12-10  Morning 10:50:27 */public  class jsondesc {private static people p;private static int num  = 1000000;private static people createaperson (string name, list<people > friends)  {people newperson = new people (); Newperson.setname (name); Newperson.setfullname (new fUllname ("Xxx_first",  "Xxx_middle", "Xxx_last")); Newperson.setage (24); List<string> hobbies = new arraylist<string> (); Hobbies.add ("basketball"); Hobbies.add (" Swimming "); Hobbies.add (" coding "); Newperson.sethobbies (hobbies); Map<string, string> clothes = new hashmap<string, string> (); Clothes.put ("coat",  "Nike"), Clothes.put ("trousers",  "Adidas"), Clothes.put ("Shoes",  "Anta"); Newperson.setclothes (clothes); Newperson.setfriends (friends); Return newperson;} Public static void main (String[] args)  throws Exception {List<People>  friends = new ArrayList<People> (Friends.add) (Createaperson ("Xiao Ming",  null)); Friends.add (Createaperson ("Tony",  null)), Friends.add (Createaperson ("Chen Xiao",  null));p  =  Createaperson ("Shao classmate",  friends); String jsonstr = jsonutils.tojson (P, null, null, null);  System.out.println ( JsonstR); Long starttime = system.currenttimemillis ();for  (int i = 0; i  < num; i++)  {////gsonutils.json2bean (Jsonstr, people.class); Jsonutils.json2object (jsonstr, people.class,  "Yyyy-mm-dd");//jacksonutils.json2bean (jsonStr,  People.class);//  fastjsonutils.json2bean (Jsonstr, people.class);} Long endtime = system.currenttimemillis ();long dif = endtime -  StartTime; System.out.println ("Deserialization: + num+ "   pen data   cost : "+ dif+ "   milliseconds   " +  "  Average:" +  (double.valueof (num)/ double.valueof (double.valueof (DIF)  / 1000)   +  "  PEN/S"));}}

Jackson vs Fastjson vs Gson