json-lib-2.2.2-jdk15

需要的jar：

Maven依赖：

<dependency>
    <groupId>net.sf.json-lib</groupId>
    <artifactId>json-lib</artifactId>
    <version>2.2.2</version>
    <classifier>jdk15</classifier>
</dependency>

import net.sf.json.JSONObject;

public class JsonlibTest {
	public static void main(String[] args) {
		/*假如：两个系统进行对接，User.java是A系统中的一个类，Person.java是B系统中的一个类*/
		User user = new User("lucheng", 1);
		JSONObject jsonUser = JSONObject.fromObject(user);//注意：User类需public修饰
		JSONObject jsonPerson = new JSONObject();
		String userName = jsonUser.get("userName").toString();//姓名
		if(userName!=null) {
			jsonPerson.put("name", userName.toString());
		}
		String userSex = jsonUser.get("userSex").toString();//性别
		if(userSex!=null) {
			if(userSex.equals("0")) {
				jsonPerson.put("sex", "女");
			} else {
				jsonPerson.put("sex", "男");
			}
		}
		Person person = (Person) JSONObject.toBean(jsonPerson,Person.class);//注意：Person类需public修饰
		System.out.println("Person [name="+ person.getName() +",sex="+ person.getSex() +"]");
	}
}

import java.io.Serializable;

public class User implements Serializable {
	private static final long serialVersionUID = 1098200633009452425L;
	private String userName;
	private int userSex;
	
	public User(){
	}
	
	public User(String userName,int userSex) {
		this.userName = userName;
		this.userSex = userSex;
	}
	
	public String getUserName() {
		return userName;
	}
	
	public void setUserName(String userName) {
		this.userName = userName;
	}
	
	public int getUserSex() {
		return userSex;
	}
	
	public void setUserSex(int userSex) {
		this.userSex = userSex;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((userName == null) ? 0 : userName.hashCode());
		result = prime * result + userSex;
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		User other = (User) obj;
		if (userName == null) {
			if (other.userName != null)
				return false;
		} else if (!userName.equals(other.userName))
			return false;
		if (userSex != other.userSex)
			return false;
		return true;
	}
}

import java.io.Serializable;

public class Person implements Serializable {
	private static final long serialVersionUID = -145610726414492908L;
	private String name;
	private String sex;
	
	public Person() {
	}
	
	public Person(String name, String sex) {
		this.name = name;
		this.sex = sex;
	}
	
	public String getName() {
		return name;
	}
	
	public void setName(String name) {
		this.name = name;
	}
	
	public String getSex() {
		return sex;
	}
	
	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((name == null) ? 0 : name.hashCode());
		result = prime * result + ((sex == null) ? 0 : sex.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Person other = (Person) obj;
		if (name == null) {
			if (other.name != null)
				return false;
		} else if (!name.equals(other.name))
			return false;
		if (sex == null) {
			if (other.sex != null)
				return false;
		} else if (!sex.equals(other.sex))
			return false;
		return true;
	}
}