将json格式的字符数组转为List对象

使用的是json-lib.jar包

将json格式的字符数组转为List对象
Java代码  收藏代码

    package hb; 
     
    import java.util.Date; 
     
    public class Person { 
         
        String id; 
        int age; 
        String name; 
        Date birthday; 
        public String getId() { 
            return id; 
        } 
        public void setId(String id) { 
            this.id = id; 
        } 
        public int getAge() { 
            return age; 
        } 
        public void setAge(int age) { 
            this.age = age; 
        } 
        public String getName() { 
            return name; 
        } 
        public void setName(String name) { 
            this.name = name; 
        } 
        public Date getBirthday() { 
            return birthday; 
        } 
        public void setBirthday(Date birthday) { 
            this.birthday = birthday; 
        } 
         
    } 


Java代码  收藏代码

    package hb; 
     
    import java.util.Iterator; 
    import java.util.List; 
     
    import org.junit.Test; 
     
    import net.sf.json.JSONArray; 
    import net.sf.json.JsonConfig; 
     
    public class JsonToList { 
     
        public static void main(String[] args) { 
            String json="[{'name':'huangbiao','age':15},{'name':'liumei','age':14}]"; 
            JSONArray jsonarray = JSONArray.fromObject(json); 
            System.out.println(jsonarray); 
            List list = (List)JSONArray.toCollection(jsonarray, Person.class); 
            Iterator it = list.iterator(); 
            while(it.hasNext()){ 
                Person p = (Person)it.next(); 
                System.out.println(p.getAge()); 
            } 
        } 
         
        @Test 
        public void jsonToList1(){ 
            String json="[{'name':'huangbiao','age':15},{'name':'liumei','age':14}]"; 
            JSONArray jsonarray = JSONArray.fromObject(json); 
            System.out.println(jsonarray); 
            List list = (List)JSONArray.toList(jsonarray, Person.class); 
            Iterator it = list.iterator(); 
            while(it.hasNext()){ 
                Person p = (Person)it.next(); 
                System.out.println(p.getAge()); 
            } 
             
        } 
         
        @Test 
        public void jsonToList2(){ 
            String json="[{'name':'huangbiao','age':15},{'name':'liumei','age':14}]"; 
            JSONArray jsonarray = JSONArray.fromObject(json); 
            System.out.println(jsonarray); 
            System.out.println("------------"); 
            List list = (List)JSONArray.toList(jsonarray, new Person(), new JsonConfig()); 
            Iterator it = list.iterator(); 
            while(it.hasNext()){ 
                Person p = (Person)it.next(); 
                System.out.println(p.getAge()); 
            } 
             
        } 
     
    } 



将list对象转为JSON字符串数组
Java代码  收藏代码

    package hb; 
     
    import java.util.LinkedList; 
    import java.util.List; 
     
    import net.sf.json.JSONArray; 
     
    public class ListToJson { 
     
        public static void main(String[] args) { 
            List list = new LinkedList(); 
            for(int i=0;i<3;i++){ 
                Person p = new Person(); 
                p.setAge(i); 
                p.setName("name"+i); 
                list.add(p); 
            } 
            JSONArray jsonarray = JSONArray.fromObject(list); 
            System.out.println(jsonarray); 
        } 
     
    } 

打印结果
Java代码  收藏代码

    [{"age":0,"birthday":null,"id":"","name":"name0"},{"age":1,"birthday":null,"id":"","name":"name1"},{"age":2,"birthday":null,"id":"","name":"name2"}]