【第20篇】org.json字符串转换，对象的转换，泛型的转换以及JSONStringer和JSONTokener的使用

package ivyy.taobao.com.domain.orgjson;

import java.util.ArrayList;
import java.util.List;

import ivyy.taobao.com.entity.Address;
import ivyy.taobao.com.entity.Student;

import net.sf.json.JSONFunction;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONStringer;
import org.json.JSONTokener;
import org.json.JSONUtil;

/**
 *@DEMO:json
 *@Java：OrgJson.java
 *@Date:2015-1-19下午12:28:31
 *@Author:龙叔
 *@Email:jilongliang@sina.com
 *@Weibo:http://weibo.com/jilongliang
 *@Version:1.0
 *@Description：
 *org.json字符串转成JSON
 *org.json字符串转换成对象
 *org.json字符串转成List数组泛型
 *org.json的JSONStringer的使用
 *org.json的JSONTokener使用
 */
@SuppressWarnings("all")
public class OrgJson {
	
	public static void main(String[] args)throws Exception {
		//String2Json();
		//String2Object();
		//String2List1();
		//String2List2();
		//JSONFunction();
		
		String json=JSONStringer();
		System.out.println(json);
	}
	/***
	 * org.json字符串转成JSON
	 * @throws Exception
	 */
	private static void String2Json()throws Exception{
		String jsonStr="{\"age\":190,\"sex\":\"男\",\"userName\":\"周伯通\"}";

		//转换成JSONObject数据
		JSONObject jsonObj=new JSONObject(jsonStr);
		Integer age=jsonObj.getInt("age");//获取age
		String sex=jsonObj.getString("sex");//获取sex
		String userName=jsonObj.get("userName").toString();//获取userName
		System.out.println(userName);
		System.out.println(sex);
		System.out.println(age);
	}
	/***
	 * org.json字符串转换成对象
	 * JSONUtil
	 * @throws Exception
	 */
	private static void String2Object()throws Exception{
		//String jsonStr="{\"age\":190,\"userName\":\"周伯通\",\"birthday\":\"1888-1-1\",\"address\":\"洛阳\",\"email\":\"zhoubotong@sina.com\"}";
		StringBuffer buff=new StringBuffer();
		buff.append("{");
			buff.append("\"age\":").append("198").append(",");
			buff.append("\"userName\":").append("\"周伯通\"").append(",");
			buff.append("\"sex\":").append("\"男\"").append(",");
			buff.append("\"birthday\":").append("\"1888-1-1\"").append(",");
			buff.append("\"address\":").append("\"洛阳\"").append(",");
			buff.append("\"email\":").append("\"zhoubotong@sina.com\"");
		buff.append("}");
		String jsonStr=buff.toString();
		
		Student st=(Student)JSONUtil.Json2Bean(jsonStr,Student.class);
		System.out.println(st.getUserName());
		System.out.println(st.getAddress());
	}
	
	/***
	 * org.json字符串转成List数组泛型
	 * @throws Exception
	 */
	private static void String2List1()throws Exception{
		StringBuffer buff=new StringBuffer();
		//String jsonStr="{\"age\":190,\"email\":\"zhoubotong@sina.com\"}";
		buff.append("[");
			buff.append("{");
				buff.append("\"age\":").append("198").append(",");
				buff.append("\"userName\":").append("\"周伯通\"").append(",");
				buff.append("\"sex\":").append("\"男\"").append(",");
				buff.append("\"birthday\":").append("\"1888-1-1\"").append(",");
				buff.append("\"address\":").append("\"洛阳\"").append(",");
				buff.append("\"email\":").append("\"zhoubotong@sina.com\"");
			buff.append("},");
			buff.append("{");
				buff.append("\"age\":").append("198").append(",");
				buff.append("\"userName\":").append("\"郭靖\"").append(",");
				buff.append("\"email\":").append("\"guojing@sina.com\"");
			buff.append("}");
		buff.append("]");
		String jsonStr=buff.toString();
		
		//转换成JSONArray数据
		
		JSONArray jarr=new JSONArray(jsonStr);
		for (int i = 0; i < jarr.length(); i++) {
			JSONObject jsonObj=(org.json.JSONObject) jarr.get(i);
			Integer age=jsonObj.getInt("age");//获取age
			String sex=jsonObj.getString("sex");//获取sex
			String userName=jsonObj.get("userName").toString();//获取userName
			System.out.println(userName);
			System.out.println(sex);
			System.out.println(age);
			
		}
	}
	
	/***
	 * org.json字符串转成List数组泛型
	 * @throws Exception
	 */
	private static void String2List2()throws Exception{
		StringBuffer buff=new StringBuffer();
		//String jsonStr="{\"age\":190,");
				buff.append("\"email\":").append("\"guojing@sina.com\"");
			buff.append("}");
		buff.append("]");
		String jsonStr=buff.toString();
		//转换成JSONArray数据
		
		JSONArray jarr=new JSONArray(jsonStr);
		for (int i = 0; i < jarr.length(); i++) {
			JSONObject jsonObj=(JSONObject) jarr.get(i);//获取JSONObject
			//转换成Student对象
			Student stu=(Student)JSONUtil.Json2Bean(jsonObj.toString(),Student.class);
			System.out.println(stu.getUserName());
			System.out.println(stu.getSex());
			System.out.println(stu.getAge());
			System.out.println(stu.getEmail());
			System.out.println(stu.getAddress());
			
		}
	}
 
	/**
	 * org.json的JSONStringer的使用
	 * @return
	 */
	private static String JSONStringer(){
		JSONStringer jsonStringer = new JSONStringer();
		try {
			jsonStringer.object();
			jsonStringer.key("userName");
			jsonStringer.value("周伯通");
			jsonStringer.key("id");
			jsonStringer.value(20150119);
			jsonStringer.key("email");
			jsonStringer.value("zhoubotong@sina.com");
			jsonStringer.endObject();
		} catch (JSONException e) {
			e.printStackTrace();
		}
		return jsonStringer.toString();
	}
	/***
	 * org.json的JSONTokener使用
	 */
	private static void JSONTokener() {
		String jsonStr = "{\"age\":190,\"userName\":\"周伯通\"}";
		JSONTokener jsonTokener = new JSONTokener(jsonStr);
		JSONObject jsonObj=null;
		String userName = "",sex="";
		Integer age=null;
		try {
			jsonObj = (JSONObject) jsonTokener.nextValue();
			userName = jsonObj.getString("userName");
			age = jsonObj.getInt("age");
			sex = jsonObj.getString("sex");
			System.out.println(userName+"\t"+age+"\t"+sex);
		} catch (JSONException e) {
			e.printStackTrace();
		}
	}
	/***
	 * 通过json-lib的JSONFunction结合org.json的JSONArray一起使用
	 * @throws JSONException
	 */
	public static void JSONFunction() throws JSONException {  
			//1、创建对象List
	        List list = new ArrayList();  
	        list.add(new Integer(1));  
	        list.add(new Boolean(true));  
	        list.add(new Character('布'));  
	        list.add(new char[] { '东','升','布','艺' });  
	        list.add(null);  
	        list.add("json");  
	        list.add(new String[] { "东升","布","艺" });  
	        list.add(new JSONFunction(new String[] { "i" },"alert(i)"));  
	        list.add(new Address("中国","广东省",1988,"527526","闻莺路"));
	        System.out.println(list);
	        //2、list转JSONArray  
	        JSONArray jsArr = new JSONArray(list);  
	        /* 
	        * 注：org.json不支持list中非JSON对象与数组对象外的对象，会直接调用对象的toString方法 
	        */  
	        System.out.println(jsArr.toString(4));  
	        //3、从JSON串到JSONArray  
	        JSONArray jsArr1 = new JSONArray(jsArr.toString());  
	  
	        //4、--从JSONArray里读取  
	        //print: json  
	        System.out.println(((JSONArray) jsArr1.get(6)).get(0));  
	  
	        //5、不能正确读取对象的信息 print: address.city = bean.Address@1cf8583  
	        System.out.println("address.city = " + jsArr1.get(8));  
	        System.out.println("\n");  
	    }  
}

package ivyy.taobao.com.entity;

import java.io.Serializable;

import com.google.gson.annotations.Expose;
/**
 * Gson gson=new GsonBuilder().excludeFieldsWithoutExposeAnnotation().create();
 * 创建Gson对象,没有@Expose注释的属性将不会被序列化
 * serialize序列化 默认 true
 * deserialize反序列化 默认 true
 * @author liangjilong
 * @Email:jilongliang@sina.com
 */
public class Address implements Serializable{
	@Expose(serialize=false)// 序列化  /Address类已经序列化
	private int id;
	@Expose(deserialize=false)// 反序列化
	private String country;//国家
	private String province;//省份
	private String city;//城市
	private String street;//街道
	private String district;//地区
	private String cityCode;//邮政编码
	private String streetNumber;//街道号
	private String weibo;//微博
	public Address() {
	}
	
	public Address(String country,String province,int id,String cityCode,String streetNumber) {
		System.out.println(country+"\t"+province+"\t"+id+cityCode+"\t"+streetNumber);
	}
	public Address(int id,String country) {
		this.id=id;
		this.country=country;
	}
	

	public String getCityCode() {
		return cityCode;
	}
	public void setCityCode(String cityCode) {
		this.cityCode = cityCode;
	}
	public String getStreetNumber() {
		return streetNumber;
	}
	public void setStreetNumber(String streetNumber) {
		this.streetNumber = streetNumber;
	}
	public String getStreet() {
		return street;
	}
	public void setStreet(String street) {
		this.street = street;
	}
	public String getDistrict() {
		return district;
	}
	public void setDistrict(String district) {
		this.district = district;
	}
	public String getCity() {
		return city;
	}
	public void setCity(String city) {
		this.city = city;
	}
	public String getProvince() {
		return province;
	}
	public void setProvince(String province) {
		this.province = province;
	}

	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getCountry() {
		return country;
	}

	public void setCountry(String country) {
		this.country = country;
	}

	public String getWeibo() {
		return weibo;
	}

	public void setWeibo(String weibo) {
		this.weibo = weibo;
	}
	
}

package ivyy.taobao.com.entity;

import java.io.Serializable;

/**
 *@Author:liangjl
 *@Date:2014-12-19
 *@Version:1.0
 *@Description:
 */
public class Student implements Serializable{
	private Integer age;
	private String sex;
	private String userName;
	private String birthday;
	private String address;
	private String email;
	
	public Integer getAge() {
		return age;
	}
	public void setAge(Integer age) {
		this.age = age;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getBirthday() {
		return birthday;
	}
	public void setBirthday(String birthday) {
		this.birthday = birthday;
	}
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
}

原文链接：https://www.f2er.com/json/289909.html

【第20篇】org.json字符串转换，对象的转换，泛型的转换以及JSONStringer和JSONTokener的使用

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