Java中Json字符串直接轉換為對象的辦法(包含多層List聚集)

Java中Json字符串直接轉換為對象的辦法(包含多層List聚集)。本站提示廣大學習愛好者：（Java中Json字符串直接轉換為對象的辦法(包含多層List聚集)）文章只能為提供參考，不一定能成為您想要的結果。以下是Java中Json字符串直接轉換為對象的辦法(包含多層List聚集)正文

應用到的類：net.sf.json.JSONObject 

應用JSON時，除要導入JSON網站下面下載的json-lib-2.2-jdk15.jar包以外，還必需有其它幾個依附包：commons-beanutils.jar，commons-httpclient.jar，commons-lang.jar，ezmorph.jar，morph-1.0.1.jar

上面是例子代碼：

// JSON轉換
JSONObject jsonObj = JSONObject.fromObject(jsonStrBody);

Map<String, Class> classMap = new HashMap<String, Class>();
classMap.put("results", WeatherBean_Baidu_City.class);
classMap.put("index", WeatherBean_Baidu_City_Index.class); 
classMap.put("weather_data", WeatherBean_Baidu_City_Weatherdata.class); 

// 將JSON轉換成WeatherBean_Baidu 
WeatherBean_Baidu weather = (WeatherBean_Baidu) JSONObject.toBean(jsonObj, 
WeatherBean_Baidu.class, classMap); 
System.out.println(weather.getResults());

應用到的幾個JAVA類代碼：

package com.lenovo.conference.entity.vo;

import java.io.Serializable;
import java.util.List;

/**
 * 氣象Bean
 * 
 * @author SHANHY
 * 
 */
@SuppressWarnings("serial")
public class WeatherBean_Baidu implements Serializable {

	private String error;//毛病號
	private String status;//狀況值
	private String date;//日期
	private List<WeatherBean_Baidu_City> results;//城市氣象預告聚集（由於一次可以查詢多個城市）

	public WeatherBean_Baidu() {
		super();
	}

	public String getError() {
		return error;
	}

	public void setError(String error) {
		this.error = error;
	}

	public String getStatus() {
		return status;
	}

	public void setStatus(String status) {
		this.status = status;
	}

	public String getDate() {
		return date;
	}

	public void setDate(String date) {
		this.date = date;
	}

	public List<WeatherBean_Baidu_City> getResults() {
		return results;
	}

	public void setResults(List<WeatherBean_Baidu_City> results) {
		this.results = results;
	}

}

package com.lenovo.conference.entity.vo;

import java.io.Serializable;
import java.util.List;

/**
 * 氣象Bean
 * 
 * @author SHANHY
 * 
 */
@SuppressWarnings("serial")
public class WeatherBean_Baidu_City implements Serializable {

	private String currentCity;//城市稱號
	private String pm25;//pm2.5值
	private List<WeatherBean_Baidu_City_Index> index;//指數聚集
	private List<WeatherBean_Baidu_City_Weatherdata> weather_data;//幾天的氣象聚集

	public WeatherBean_Baidu_City() {
		super();
	}

	public String getCurrentCity() {
		return currentCity;
	}

	public void setCurrentCity(String currentCity) {
		this.currentCity = currentCity;
	}

	public String getPm25() {
		return pm25;
	}

	public void setPm25(String pm25) {
		this.pm25 = pm25;
	}

	public List<WeatherBean_Baidu_City_Index> getIndex() {
		return index;
	}

	public void setIndex(List<WeatherBean_Baidu_City_Index> index) {
		this.index = index;
	}

	public List<WeatherBean_Baidu_City_Weatherdata> getWeather_data() {
		return weather_data;
	}

	public void setWeather_data(
			List<WeatherBean_Baidu_City_Weatherdata> weather_data) {
		this.weather_data = weather_data;
	}

}

package com.lenovo.conference.entity.vo;

import java.io.Serializable;

/**
 * 氣象Bean
 * 
 * @author SHANHY
 * 
 */
@SuppressWarnings("serial")
public class WeatherBean_Baidu_City_Weatherdata implements Serializable {

	private String date;// 日期
	private String dayPictureUrl;// 日間的氣象圖片
	private String nightPictureUrl;// 早晨的氣象圖片
	private String weather;// 氣象
	private String wind;// 風向
	private String temperature;// 溫度

	public WeatherBean_Baidu_City_Weatherdata() {
		super();
	}

	public String getDate() {
		return date;
	}

	public void setDate(String date) {
		this.date = date;
	}

	public String getDayPictureUrl() {
		return dayPictureUrl;
	}

	public void setDayPictureUrl(String dayPictureUrl) {
		this.dayPictureUrl = dayPictureUrl;
	}

	public String getNightPictureUrl() {
		return nightPictureUrl;
	}

	public void setNightPictureUrl(String nightPictureUrl) {
		this.nightPictureUrl = nightPictureUrl;
	}

	public String getWeather() {
		return weather;
	}

	public void setWeather(String weather) {
		this.weather = weather;
	}

	public String getWind() {
		return wind;
	}

	public void setWind(String wind) {
		this.wind = wind;
	}

	public String getTemperature() {
		return temperature;
	}

	public void setTemperature(String temperature) {
		this.temperature = temperature;
	}

}

package com.lenovo.conference.entity.vo;

import java.io.Serializable;

/**
 * 氣象Bean
 * 
 * @author SHANHY
 * 
 */
@SuppressWarnings("serial")
public class WeatherBean_Baidu_City_Index implements Serializable {

	private String title;//題目
	private String zs;//溫馨度
	private String tipt;//指數簡述
	private String des;//指數概述

	public WeatherBean_Baidu_City_Index() {
		super();
	}

	public String getTitle() {
		return title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public String getZs() {
		return zs;
	}

	public void setZs(String zs) {
		this.zs = zs;
	}

	public String getTipt() {
		return tipt;
	}

	public void setTipt(String tipt) {
		this.tipt = tipt;
	}

	public String getDes() {
		return des;
	}

	public void setDes(String des) {
		this.des = des;
	}

}

例子中解析所對應的JSON字符串

{"error":0,"status":"success","date":"2015-01-15","results":[{"currentCity":"南京","pm25":"83","index":[{"title":"穿衣","zs":"較冷","tipt":"穿衣指數","des":"建議著厚外衣加毛衣等服裝網www.vhao.net。年邁體弱者宜著年夜衣、呢外衣加羊毛衫。"},{"title":"洗車","zs":"較合適","tipt":"洗車指數","des":"較合適洗車，將來一天無雨，風力較小，擦洗一新的汽車至多能堅持一天。"},{"title":"旅游","zs":"合適","tipt":"旅游指數","des":"氣象較好，氣溫稍低，會感到略微有點涼，不外也是個晴天氣哦。合適旅游，可不要錯過機遇呦！"},{"title":"傷風","zs":"少發","tipt":"傷風指數","des":"各項氣候前提合適，無顯著降溫進程，產生傷風機率較低。"},{"title":"活動","zs":"較不宜","tipt":"活動指數","des":"陰天，且氣象嚴寒，推舉您在室內停止低強度活動；若保持戶外活動，請選擇適合的活動並留意保暖。"},{"title":"紫外線強度","zs":"最弱","tipt":"紫外線強度指數","des":"屬弱紫外線輻射氣象，無需特殊防護。若歷久在戶外，建議塗擦SPF在8-12之間的防曬護膚品。"}],"weather_data":[{"date":"周四 01月15日 (及時：6℃)","dayPictureUrl":"http://api.map.百度.com/images/weather/day/yin.png","nightPictureUrl":"http://api.map.百度.com/images/weather/night/duoyun.png","weather":"陰轉多雲","wind":"寒風輕風","temperature":"8 ~ 4℃"},{"date":"周五","dayPictureUrl":"http://api.map.百度.com/images/weather/day/duoyun.png","nightPictureUrl":"http://api.map.百度.com/images/weather/night/qing.png","weather":"多雲放晴","wind":"東南風3-4級","temperature":"12 ~ 0℃"},{"date":"周六","dayPictureUrl":"http://api.map.百度.com/images/weather/day/qing.png","nightPictureUrl":"http://api.map.百度.com/images/weather/night/duoyun.png","weather":"晴轉多雲","wind":"西南風3-4級","temperature":"8 ~ 0℃"},{"date":"周日","dayPictureUrl":"http://api.map.百度.com/images/weather/day/qing.png","nightPictureUrl":"http://api.map.百度.com/images/weather/night/qing.png","weather":"晴","wind":"西風輕風","temperature":"10 ~ -1℃"}]},{"currentCity":"徐州","pm25":"154","index":[{"title":"穿衣","zs":"較冷","tipt":"穿衣指數","des":"建議著厚外衣加毛衣等服裝網www.vhao.net。年邁體弱者宜著年夜衣、呢外衣加羊毛衫。"},{"title":"洗車","zs":"較合適","tipt":"洗車指數","des":"較合適洗車，將來一天無雨，風力較小，擦洗一新的汽車至多能堅持一天。"},{"title":"旅游","zs":"合適","tipt":"旅游指數","des":"氣象較好，但涓滴不會影響您出行的心境。溫度合適又有輕風相伴，合適旅游。"},{"title":"傷風","zs":"較易發","tipt":"傷風指數","des":"氣象較涼，較易產生傷風，請恰當增長衣服。體質較弱的同伙特別應當留意防護。"},{"title":"活動","zs":"較不宜","tipt":"活動指數","des":"氣象較好，但斟酌氣象嚴寒，推舉您停止各類室內活動，若在戶外活動請留意保暖並做好預備運動。"},{"title":"紫外線強度","zs":"最弱","tipt":"紫外線強度指數","des":"屬弱紫外線輻射氣象，無需特殊防護。若歷久在戶外，建議塗擦SPF在8-12之間的防曬護膚品。"}],"weather_data":[{"date":"周四 01月15日 (及時：6℃)","dayPictureUrl":"http://api.map.百度.com/images/weather/day/duoyun.png","nightPictureUrl":"http://api.map.百度.com/images/weather/night/duoyun.png","weather":"多雲","wind":"熏風輕風","temperature":"10 ~ 3℃"},{"date":"周五","dayPictureUrl":"http://api.map.百度.com/images/weather/day/duoyun.png","nightPictureUrl":"http://api.map.百度.com/images/weather/night/duoyun.png","weather":"多雲","wind":"寒風3-4級","temperature":"11 ~ -4℃"},{"date":"周六","dayPictureUrl":"http://api.map.百度.com/images/weather/day/duoyun.png","nightPictureUrl":"http://api.map.百度.com/images/weather/night/duoyun.png","weather":"多雲","wind":"春風輕風","temperature":"6 ~ -4℃"},{"date":"周日","dayPictureUrl":"http://api.map.百度.com/images/weather/day/duoyun.png","nightPictureUrl":"http://api.map.百度.com/images/weather/night/duoyun.png","weather":"多雲","wind":"西風3-4級","temperature":"11 ~ -1℃"}]}]}

以上這篇Java中Json字符串直接轉換為對象的辦法(包含多層List聚集)就是小編分享給年夜家的全體內容了，願望能給年夜家一個參考，也願望年夜家多多支撐。