Gson工具类

jar:Gson.jar

工具类

package json;

import java.lang.reflect.Type;

import com.google.gson.Gson;

public class GsonUtil {

	private static Gson gson = new Gson();

	public static String toJson(Object obj, Type type) {		
		return gson.toJson(obj, type);		
	}		
	
	public static Object fromJson(String str,Type type){
		return gson.fromJson(str, type);
	}
}  

测试类

package json.test;

import json.GsonUtil;

public class Man {
	String name;
	String phone;
	public Man() {
		super();
	}
	public Man(String name, String phone) {
		super();
		this.name = name;
		this.phone = phone;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((name == null) ? 0 : name.hashCode());
		result = prime * result + ((phone == null) ? 0 : phone.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;
		Man other = (Man) obj;
		if (name == null) {
			if (other.name != null)
				return false;
		} else if (!name.equals(other.name))
			return false;
		if (phone == null) {
			if (other.phone != null)
				return false;
		} else if (!phone.equals(other.phone))
			return false;
		return true;
	}
	public String toString() {
		return GsonUtil.toJson(this, Man.class);
	}
}

测试执行类

package json.test;

public class TestGson {
	public static void main(String[] args) {
		Man man = new Man("aa","123");
		System.out.println(man.toString());
	}
}