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<javabean>转化示例开始----------");
Person person1 = new Person("1","fastjson1",1);
Person person2 = new Person("2","fastjson2",2);
List<Person> persons = new ArrayList<Person>();
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<Person> 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<javabean>转化示例结束----------");
}
}