学步园

package com.example.testjson.entity;

import java.util.Date;
import java.util.List;
import java.util.Map;

public class Person {
    private String name;
    private FullName fullName;
    private int age;
    private Date birthday;
    private List<String> hobbies;
    private Map<String, String> clothes;
    private List<Person> friends;
    
    public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public FullName getFullName() {
		return fullName;
	}

	public void setFullName(FullName fullName) {
		this.fullName = fullName;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public Date getBirthday() {
		return birthday;
	}

	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}

	public List<String> getHobbies() {
		return hobbies;
	}

	public void setHobbies(List<String> hobbies) {
		this.hobbies = hobbies;
	}

	public Map<String, String> getClothes() {
		return clothes;
	}

	public void setClothes(Map<String, String> clothes) {
		this.clothes = clothes;
	}

	public List<Person> getFriends() {
		return friends;
	}

	public void setFriends(List<Person> friends) {
		this.friends = friends;
	}

	@Override
    public String toString() {
        String str= "Person [name=" + name + ", fullName=" + fullName + ", age="
                + age + ", birthday=" + birthday + ", hobbies=" + hobbies
                + ", clothes=" + clothes +  "]\n";
        if(friends!=null){
            str+="Friends:\n";
            for (Person f : friends) {
                str+="\t"+f;
            }
        }
        return str;
    }
    
}

class FullName {
    private String firstName;
    private String middleName;
    private String lastName;
    
    public FullName(){
    }
    
    public FullName(String firstName, String middleName, String lastName) {
		super();
		this.firstName = firstName;
		this.middleName = middleName;
		this.lastName = lastName;
	}

	public String getFirstName() {
		return firstName;
	}

	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}

	public String getMiddleName() {
		return middleName;
	}

	public void setMiddleName(String middleName) {
		this.middleName = middleName;
	}

	public String getLastName() {
		return lastName;
	}

	public void setLastName(String lastName) {
		this.lastName = lastName;
	}

	@Override
    public String toString() {
        return "[firstName=" + firstName + ", middleName="
                + middleName + ", lastName=" + lastName + "]";
    }
    
}

package com.example.testjson.entity;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class PersonFactory {
	
	private static Person createABSPerson(String name,List<Person> friends) {
        Person newPerson = new Person();
        newPerson.setName(name);
        newPerson.setFullName(new FullName(name+"_first", name+"_middle", name+"_last"));
        newPerson.setAge(24);
        List<String> hobbies=new ArrayList<String>();
        hobbies.add("篮球");
        hobbies.add("游泳");
        hobbies.add("coding");
        newPerson.setHobbies(hobbies);
        Map<String,String> clothes=new HashMap<String, String>();
        clothes.put("coat", "Nike");
        clothes.put("trousers", "adidas");
        clothes.put("shoes", "安踏");
        newPerson.setClothes(clothes);
        newPerson.setFriends(friends);
        return newPerson;
    }
    
    public static Person create(String name){
        List<Person> friends=new ArrayList<Person>();
        friends.add(createABSPerson("小明",null));
        friends.add(createABSPerson("Tony",null));
        friends.add(createABSPerson("陈小二",null));

        return createABSPerson(name,friends);
    }
}

package com.example.testjson.gson;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.JsonParser;

public class GsonUtil {
private static Gson gson = new GsonBuilder().create();
    
    public static String bean2Json(Object obj){
        return gson.toJson(obj);
    }
    
    public static <T> T json2Bean(String jsonStr,Class<T> objClass){
        return gson.fromJson(jsonStr, objClass);
    }
    
    public static String jsonFormatter(String uglyJsonStr){
        Gson gson = new GsonBuilder().setPrettyPrinting().create();
        JsonParser jp = new JsonParser();
        JsonElement je = jp.parse(uglyJsonStr);
        String prettyJsonString = gson.toJson(je);
        return prettyJsonString;
    }
}

package com.example.testjson.fastjson;

import com.alibaba.fastjson.JSON;

public class FastJsonUtil {
	
	public static String bean2Json(Object obj){
        return JSON.toJSONString(obj);
    }
    
    public static <T> T json2Bean(String jsonStr,Class<T> objClass){
        return JSON.parseObject(jsonStr, objClass);
    }
}

package com.example.testjson;

import com.example.testjson.entity.Person;
import com.example.testjson.entity.PersonFactory;
import com.example.testjson.gson.GsonUtil;

public class GsonTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Person p = PersonFactory.create("Kobe");
		String json = GsonUtil.bean2Json(p);
		String prettyJsonString = GsonUtil.jsonFormatter(json);
		
		System.out.println("FastJson Serializing="+json);
		System.out.println("FastJson Serializing PrettyPrinting="+prettyJsonString);
		
		Person newPerson = GsonUtil.json2Bean(json, Person.class);
		
		System.out.println("FastJson Deserializing="+newPerson);
	}

}