总共4行代码使用fastxml.json实现Java对象的序列化和反序列化

直接上代码。非常简单的测试类：

package com.sap.argame.util;

public class Person{
	private String name;
	private int age;
	
	public Person() {
		
	}
	public Person(String name, int age) {
		this.name = name;
		this.age = age;
	}
	
	public String getName() {
		return this.name;
	}
	
	public int getAge() {
		return this.age;
	}
}

Java对象转Json字符串：

就两行代码：

import com.fasterxml.jackson.databind.ObjectMapper;


public static String toJson(Object object) throws JsonProcessingException {
        ObjectMapper mapper = new ObjectMapper();
        return mapper.writeValueAsString(object);
    }

Json字符串转Java对象：

public static <T> T fromJson(String json, Class<T> clazz) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        return mapper.readValue(json, clazz);
    }

测试代码：

Person jerry = new Person("Jerry", 36);
    	String json = null;
		try {
			json = toJson(jerry);
		} catch (JsonProcessingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    	System.out.println(json);
    	
    	Person another = null;
		try {
			another = (Person)fromJson(json, Person.class);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    	
		System.out.println("Name: " + another.getName() + " age: " + another.getAge());
    	System.out.println(jerry == another);

最后的jerry和another实例的比较会得到期望的false，这也是通过序列化/反序列化攻击单例模式实现的例子。
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