FastJSON使用案例(fastjson-1.1.28.jar)

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 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 JSON格式的字符串
12      */
13     static <T> String serialize(T object) {
14         return JSON.toJSONString(object);
15     }
16 
17     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
19  json JSON格式的字符串
20  clz java类型或者java数组类型,不包括java集合类型
21  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
22      23     static <T> T deserialize(String json,Class<T> clz) {
24         return JSON.parSEObject(json,clz);
25     }
26 
27     28      * 将JSON格式的字符串转换为List<T>类型的对象
29 30  clz 指定泛型集合里面的T类型
31  List<T>类型的对象
32      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     }
36 
37     38      * 将JSON格式的字符串转换成任意Java类型的对象
39 40  type 任意Java类型
41  任意Java类型的对象
42      43     static <T> T deserializeAny(String json,TypeReference<T> type) {
44         45     }
46 
47 }
class Person { 2 private int Age; 3 private String Name; 4 int getAge() { 5 return Age; 6 } 7 void setAge(int age) { 8 Age = age; 9 } 10 public String getName() { 11 return Name; 12 } void setName(String name) { 14 Name = name; 16 }
class Program1 { args 5 6 static void main(String[] args) { 7 // TODO Auto-generated method stub 8 Person person = new Person(); 9 person.setAge(32); 10 person.setName("wangyunpeng"); 11 String json = FastJSONHelper.serialize(person); 12 System.out.println(json); 13 14 person = FastJSONHelper.deserialize(json,Person.class); 15 System.out.println(String.format("Name:%s,Age:%s",person.getName(),person.getAge())); 16 } 17 18 }
import java.util.ArrayList; class Program2 { 4 5 7 9 10 11 ArrayList<Person> list = new ArrayList<Person>(); 12 Person person1 = 13 person1.setAge(32); 14 person1.setName("wangyunpeng"); 15 list.add(person1); 16 Person person2 = 17 person2.setAge(17); 18 person2.setName("shyx"); 19 list.add(person2); 20 String json = FastJSONHelper.serialize(list); 21 System.out.println(json); 22 23 Person[] persons = FastJSONHelper.deserialize(json,Person[].for (Person person : persons) { 25 System.out.println(String.format("Name:%s,128); line-height:1.5!important">26 } 27 } 28 }
2 3 5 class Program3 { 6 8 9 12 ArrayList<Person> list = 13 Person person1 = 14 person1.setAge(32); 15 person1.setName("wangyunpeng"); 16 list.add(person1); 17 Person person2 = 18 person2.setAge(17); 19 person2.setName("shyx"); 20 list.add(person2); 21 String json = FastJSONHelper.serialize(list); 22 System.out.println(json); 23 24 List<Person> personList = FastJSONHelper.deserializeList(json,128); line-height:1.5!important">25 for (Person person : personList) { 26 System.out.println(String.format("Name:%s,128); line-height:1.5!important">27 } 28 } 29 30 }
class Program4 { 7 8 9 10 11 List<String> list = new ArrayList<String>(); 12 list.add("wyp"); 13 list.add("shyx"); 14 String json = FastJSONHelper.serialize(list); 15 System.out.println(json); 16 list = FastJSONHelper.deserializeList(json,String.17 for (String string : list) { 18 System.out.println(string); 19 } 20 } 21 }
import java.util.HashMap; import java.util.Map; import com.alibaba.fastjson.JSONObject; 8 class Program5 { 10 11 12 13 14 15 16 HashMap<String,Object> map = new HashMap<String,Object>(); 17 map.put("key1","value1"); 18 map.put("key2","value2"); 19 20 HashMap<String,Object> map2 = 21 map2.put("key1",1); 22 map2.put("key2",2); 23 24 HashMap<String,Object> map3 = 25 Person person1 = 26 person1.setAge(32); 27 person1.setName("wangyunpeng"); 28 map3.put("wyp",person1); 29 Person person2 = 30 person2.setAge(17); 31 person2.setName("shenyunxiao"); 32 map3.put("shyx",person2); 33 34 List<HashMap<String,Object>> list = new ArrayList<HashMap<String,Object>>(); 35 list.add(map); 36 list.add(map2); 37 list.add(map3); 38 39 String json = FastJSONHelper.serialize(list); 40 System.out.println(json); 41 42 list = FastJSONHelper.deserializeAny(json,43 new TypeReference<List<HashMap<String,Object>>>() { 44 }); 45 for (HashMap<String,Object> item : list) { 46 for (Map.Entry<String,Object> entry : item.entrySet()) { 47 String key = entry.getKey(); 48 Object value = entry.getValue(); 49 if (value instanceof JSONObject) { 50 JSONObject jObj = (JSONObject) value; 51 String json2 = FastJSONHelper.serialize(jObj); 52 Person other = FastJSONHelper.deserialize(json2,128); line-height:1.5!important">53 System.out.println(String.format( 54 "Key:%s,Value:[Name:%s,Age:%s]",key,128); line-height:1.5!important">55 other.getName(),other.getAge())); 56 } else { 57 System.out.println(String.format("Key:%s,Value:%s",128); line-height:1.5!important">58 value)); 59 } 60 } 61 } 62 63 } 64 65 }

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