Fastjson 使用实例

package junit.test; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.TypeReference; public class TestFastJson { static class Person{ private String id ; private String name; private int age ; public Person(){ } public Person(String id,String name,int age){ this.id=id; this.name=name; this.age=age; } public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } @Override public String toString() { return "Person [age=" + age + ", id=" + id + ", name=" + name + "]"; } } public static void main(String[] args) { method1(); method2(); method3(); method4(); } static void method1(){ System.out.println("javabean转化示例开始----------"); Person person = new Person("1","fastjson",1); //这里将javabean转化成json字符串 String jsonString = JSON.toJSONString(person); System.out.println(jsonString); //这里将json字符串转化成javabean对象, person =JSON.parseObject(jsonString,Person.class); System.out.println(person.toString()); System.out.println("javabean转化示例结束----------"); } static void method2(){ System.out.println("List转化示例开始----------"); Person person1 = new Person("1","fastjson1",1); Person person2 = new Person("2","fastjson2",2); List persons = new ArrayList(); persons.add(person1); persons.add(person2); String jsonString = JSON.toJSONString(persons); System.out.println("json字符串:"+jsonString); //解析json字符串 List persons2 = JSON.parseArray(jsonString,Person.class); //输出解析后的person对象，也可以通过调试模式查看persons2的结构 System.out.println("person1对象："+persons2.get(0).toString()); System.out.println("person2对象："+persons2.get(1).toString()); System.out.println("List转化示例结束----------"); } }