常用的三种json软件的使用

 

从几个角度比较三种软件

　　1. json操作
　　2 反解
　　3 性能

　

易用性还没有列出。

 

可以根据个人喜好进行取舍。

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package json;     import com.alibaba.fastjson.JSON; import com.fasterxml.jackson.databind.ObjectMapper; import com.google.gson.Gson; import lombok.Data;   public class JsonTest {     public static void main(String[] args) throws Exception{         testFastjson();         testJackson();         testGson();     }         public static Person getPerson(String name, int age){         Person person = new Person();         person.setAge(age);         person.setName(name);         return person;     }     public static void testFastjson(){         long              startTime = System.currentTimeMillis();         String            jsonstr   = "";         Person person1   = getPerson("a",1);         for (int i =0;i < 100000;i++){             jsonstr = JSON.toJSONString(person1);             Person person = JSON.parseObject(jsonstr, Person.class);         }         System.out.println("fastjson cost:"+(System.currentTimeMillis()-startTime));         System.out.println(jsonstr);     }       public static void testJackson() throws Exception{           long startTime = System.currentTimeMillis();           String            jsonstr = "";         Person person1 = getPerson("a",1);           ObjectMapper mapper = new ObjectMapper();           for (int i =0;i < 100000;i++){             jsonstr = mapper.writeValueAsString(person1);             Person person = mapper.readValue(jsonstr, Person.class);         }         System.out.println("jackson cost:"+(System.currentTimeMillis()-startTime));         System.out.println(jsonstr);     }           public static void testGson(){         long startTime = System.currentTimeMillis();           String            jsonstr = "";         Person person1 = getPerson("a",1);           Gson gson = new Gson();           for (int i =0;i < 100000;i++){             jsonstr = gson.toJson(person1);             Person person = gson.fromJson(jsonstr, Person.class);         }         System.out.println("gson cost:"+(System.currentTimeMillis()-startTime));         System.out.println(jsonstr);     } }   @Data class Person{     private String name;     private int  age; }