FastJSON使用案例（fastjson-1.1.28.jar）

发布时间：2020-12-16 19:41:45 所属栏目：百科来源：网络整理

导读：1 import java.util.List; 2 3 import com.alibaba.fastjson.JSON; 4 import com.alibaba.fastjson.TypeReference; 5 6 public class FastJSONHelper { 7 8 /** 9 * 将java类型的对象转换为JSON格式的字符串 10 * @param object java类型的对象 11 @return J

 
    
  
import java.util.List;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;

public class FastJSONHelper {

   /**
    * 将java类型的对象转换为JSON格式的字符串
    * @param object java类型的对象
@return JSON格式的字符串
    */
   static <T> String serialize(T object) {
       return JSON.toJSONString(object);
   }

   18      * 将JSON格式的字符串转换为java类型的对象或者java数组类型的对象，不包括java集合类型
json JSON格式的字符串
clz java类型或者java数组类型，不包括java集合类型
java类型的对象或者java数组类型的对象，不包括java集合类型的对象
    23     static <T> T deserialize(String json,Class<T> clz) {
       return JSON.parSEObject(json,clz);
   }

   28      * 将JSON格式的字符串转换为List<T>类型的对象
30  clz 指定泛型集合里面的T类型
List<T>类型的对象
    33     static <T> List<T> deserializeList(String json,128); line-height:1.5!important">34         return JSON.parseArray(json,128); line-height:1.5!important">35     }

   38      * 将JSON格式的字符串转换成任意Java类型的对象
40  type 任意Java类型
任意Java类型的对象
    43     static <T> T deserializeAny(String json,TypeReference<T> type) {
       45     }

} 
    
  

class Person {
 2privateint Age;
 3private String Name;
 4int getAge() {
 5return Age;
  }
 7void setAge(int age) {
       Age = age;
  }
10public String getName() {
11return Name;
  }
void setName(String name) {
       Name = name;
} 
   
   class Program1 {
 args
6staticvoid main(String[] args) {
 7// TODO Auto-generated method stub 8         Person person = new Person();
       person.setAge(32);
       person.setName("wangyunpeng");
       String json = FastJSONHelper.serialize(person);
      System.out.println(json);
       person = FastJSONHelper.deserialize(json,Person.class);
       System.out.println(String.format("Name:%s,Age:%s",person.getName(),person.getAge()));
  }
} 
   
   import java.util.ArrayList;
class Program2 {
5 7 91011         ArrayList<Person> list = new ArrayList<Person>();
       Person person1 = 13         person1.setAge(32);
       person1.setName("wangyunpeng");
      list.add(person1);
       Person person2 = 17         person2.setAge(17);
       person2.setName("shyx");
      list.add(person2);
       String json = FastJSONHelper.serialize(list);
      System.out.println(json);
       Person[] persons = FastJSONHelper.deserialize(json,Person[].for (Person person : persons) {
           System.out.println(String.format("Name:%s,128); line-height:1.5!important">26         }
  }
} 
   
3 5class Program3 {
8 912         ArrayList<Person> list = 13         Person person1 = 14         person1.setAge(32);
       person1.setName("wangyunpeng");
      list.add(person1);
       Person person2 = 18         person2.setAge(17);
       person2.setName("shyx");
      list.add(person2);
       String json = FastJSONHelper.serialize(list);
      System.out.println(json);
       List<Person> personList = FastJSONHelper.deserializeList(json,128); line-height:1.5!important">25         for (Person person : personList) {
           System.out.println(String.format("Name:%s,128); line-height:1.5!important">27         }
  }
} 
   
   class Program4 {
8 91011         List<String> list = new ArrayList<String>();
       list.add("wyp");
       list.add("shyx");
       String json = FastJSONHelper.serialize(list);
      System.out.println(json);
       list = FastJSONHelper.deserializeList(json,String.17for (String string : list) {
          System.out.println(string);
      }
  }
} 
   
   import java.util.HashMap;
import java.util.Map;
import com.alibaba.fastjson.JSONObject;
 8class Program5 {
10111213141516         HashMap<String,Object> map = new HashMap<String,Object>();
       map.put("key1","value1");
       map.put("key2","value2");
       HashMap<String,Object> map2 = 21         map2.put("key1",1);
       map2.put("key2",2);
       HashMap<String,Object> map3 = 25         Person person1 = 26         person1.setAge(32);
       person1.setName("wangyunpeng");
       map3.put("wyp",person1);
       Person person2 = 30         person2.setAge(17);
       person2.setName("shenyunxiao");
       map3.put("shyx",person2);
       List<HashMap<String,Object>> list = new ArrayList<HashMap<String,Object>>();
      list.add(map);
      list.add(map2);
      list.add(map3);
       String json = FastJSONHelper.serialize(list);
      System.out.println(json);
       list = FastJSONHelper.deserializeAny(json,43new TypeReference<List<HashMap<String,Object>>>() {
              });
45for (HashMap<String,Object> item : list) {
46for (Map.Entry<String,Object> entry : item.entrySet()) {
               String key = entry.getKey();
               Object value = entry.getValue();
49if (value instanceof JSONObject) {
                   JSONObject jObj = (JSONObject) value;
                   String json2 = FastJSONHelper.serialize(jObj);
                   Person other = FastJSONHelper.deserialize(json2,128); line-height:1.5!important">53                     System.out.println(String.format(
                           "Key:%s,Value:[Name:%s,Age:%s]",key,128); line-height:1.5!important">55                            other.getName(),other.getAge()));
               } else {
                   System.out.println(String.format("Key:%s,Value:%s",128); line-height:1.5!important">58                            value));
              }
          }
      }
  }
} 
   
    
  
（编辑：李大同）
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