fastjson 之常见的数据类型与json的相互转换

public class FastJsonTest1  {        /**      * 数组转json格式字符串      */      public void array2Json(){          String[] arr = {"bill","green","maks","jim"};          String jsonText = JSON.toJSONString(arr, true);          System.out.println("array2Json()方法：jsonText=="+jsonText);          // 输出结果：jsonText==["bill","green","maks","jim"]      }        /**      * json格式字符串转数组      */      public void json2Array(){          String jsonText = "[\"bill\",\"green\",\"maks\",\"jim\"]";          JSONArray jsonArr = JSON.parseArray(jsonText);          System.out.println("json2Array()方法：jsonArr=="+jsonArr);          // 输出结果：jsonArr==["bill","green","maks","jim"]      }            /**      * 数组转json格式字符串      */      public void array2Json2(){          User user1 = new User("P001","TOM",16);          User user2 = new User("P002","JACKSON",21);          User user3 = new User("P003","MARTIN",20);          User[] userArr = {user1,user2,user3};          String jsonText = JSON.toJSONString(userArr, true);          System.out.println("array2Json2()方法：jsonText=="+jsonText);          //输出结果：jsonText==[{"age":16,"id":"P001","name":"TOM"},{"age":21,"id":"P002","name":"JACKSON"},{"age":20,"id":"P003","name":"MARTIN"}]      }            /**      * json格式字符串转数组      */      public void json2Array2(){          String jsonText = "[{\"age\":16,\"id\":\"P001\",\"name\":\"TOM\"},{\"age\":21,\"id\":\"P002\",\"name\":\"JACKSON\"},{\"age\":20,\"id\":\"P003\",\"name\":\"MARTIN\"}]";          JSONArray jsonArr = JSON.parseArray(jsonText);          System.out.println("json2Array2()方法：jsonArr=="+jsonArr);          // 输出结果：jsonArr==[{"age":16,"id":"P001","name":"TOM"},{"age":21,"id":"P002","name":"JACKSON"},{"age":20,"id":"P003","name":"MARTIN"}]      }            /**      * list集合转json格式字符串      */      public void list2Json(){          List list = new ArrayList();          User user1 = new User("L001","TOM",16);          list.add(user1);          User user2 = new User("L002","JACKSON",21);          list.add(user2);          User user3 = new User("L003","MARTIN",20);          list.add(user3);          String jsonText = JSON.toJSONString(list, true);          System.out.println("list2Json()方法：jsonText=="+jsonText);          //输出结果：jsonText==[{"age":16,"id":"L001","name":"TOM"},{"age":21,"id":"L002","name":"JACKSON"},{"age":20,"id":"L003","name":"MARTIN"}]      }            /**      * list集合转json格式字符串      */      public void list2Json2(){          List list = new ArrayList();          Address address1 = new Address("广东省","深圳市","科苑南路","580053");          User user1 = new User("L001","TOM",16,address1);          list.add(user1);          Address address2 = new Address("江西省","南昌市","阳明路","330004");          User user2 = new User("L002","JACKSON",21,address2);          list.add(user2);          Address address3 = new Address("陕西省","西安市","长安南路","710114");          User user3 = new User("L003","MARTIN",20,address3);          list.add(user3);          String jsonText = JSON.toJSONString(list, true);          System.out.println("list2Json2()方法：jsonText=="+jsonText);          //输出结果：jsonText==[{"address":{"city":"深圳市","post":"580053","province":"广东省","street":"科苑南路"},"age":16,"id":"L001","name":"TOM"},{"address":{"city":"南昌市","post":"330004","province":"江西省","street":"阳明路"},"age":21,"id":"L002","name":"JACKSON"},{"address":{"city":"西安市","post":"710114","province":"陕西省","street":"长安南路"},"age":20,"id":"L003","name":"MARTIN"}]      }        /**      * map转json格式字符串      */      public void map2Json(){          Map map = new HashMap();          Address address1 = new Address("广东省","深圳市","科苑南路","580053");          map.put("address1", address1);          Address address2 = new Address("江西省","南昌市","阳明路","330004");          map.put("address2", address2);          Address address3 = new Address("陕西省","西安市","长安南路","710114");          map.put("address3", address3);          String jsonText = JSON.toJSONString(map, true);          System.out.println("map2Json()方法：jsonText=="+jsonText);          //输出结果：jsonText=={"address1":{"city":"深圳市","post":"580053","province":"广东省","street":"科苑南路"},"address2":{"city":"南昌市","post":"330004","province":"江西省","street":"阳明路"},"address3":{"city":"西安市","post":"710114","province":"陕西省","street":"长安南路"}}      }        }