使用JSON時(shí)，除了要導(dǎo)入JSON網(wǎng)站上面下載的json-lib-2.2-jdk15.jar包之外，還必須有其它幾個(gè)依賴包：commons-beanutils.jar，commons-httpclient.jar，commons-lang.jar，ezmorph.jar，morph-1.0.1.jar

下面是例子代碼：

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

使用到的幾個(gè)JAVA類代碼：

package com.lenovo.conference.entity.vo;

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

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

	private String error;//錯(cuò)誤號(hào)
	private String status;//狀態(tài)值
	private String date;//日期
	private List<WeatherBean_Baidu_City> results;//城市天氣預(yù)報(bào)集合（因?yàn)橐淮慰梢圆樵兌鄠€(gè)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;

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

	private String currentCity;//城市名稱
	private String pm25;//pm2.5值
	private List<WeatherBean_Baidu_City_Index> index;//指數(shù)集合
	private List<WeatherBean_Baidu_City_Weatherdata> weather_data;//幾天的天氣集合

	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;

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

	private String date;// 日期
	private String dayPictureUrl;// 白天的天氣圖片
	private String nightPictureUrl;// 晚上的天氣圖片
	private String weather;// 天氣
	private String wind;// 風(fēng)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;

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

	private String title;//標(biāo)題
	private String zs;//舒適度
	private String tipt;//指數(shù)簡(jiǎn)述
	private String des;//指數(shù)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(duì)應(yīng)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(shù)","des":"建議著厚外套加毛衣等服裝。年老體弱者宜著大衣、呢外套加羊毛衫。"},{"title":"洗車","zs":"較適宜","tipt":"洗車指數(shù)","des":"較適宜洗車，未來(lái)一天無(wú)雨，風(fēng)力較小，擦洗一新的汽車至少能保持一天。"},{"title":"旅游","zs":"適宜","tipt":"旅游指數(shù)","des":"天氣較好，氣溫稍低，會(huì)感覺(jué)稍微有點(diǎn)涼，不過(guò)也是個(gè)好天氣哦。適宜旅游，可不要錯(cuò)過(guò)機(jī)會(huì)呦！"},{"title":"感冒","zs":"少發(fā)","tipt":"感冒指數(shù)","des":"各項(xiàng)氣象條件適宜，無(wú)明顯降溫過(guò)程，發(fā)生感冒機(jī)率較低。"},{"title":"運(yùn)動(dòng)","zs":"較不宜","tipt":"運(yùn)動(dòng)指數(shù)","des":"陰天，且天氣寒冷，推薦您在室內(nèi)進(jìn)行低強(qiáng)度運(yùn)動(dòng)；若堅(jiān)持戶外運(yùn)動(dòng)，請(qǐng)選擇合適的運(yùn)動(dòng)并注意保暖。"},{"title":"紫外線強(qiáng)度","zs":"最弱","tipt":"紫外線強(qiáng)度指數(shù)","des":"屬弱紫外線輻射天氣，無(wú)需特別防護(hù)。若長(zhǎng)期在戶外，建議涂擦SPF在8-12之間的防曬護(hù)膚品。"}],"weather_data":[{"date":"周四 01月15日 (實(shí)時(shí)：6℃)","dayPictureUrl":"http://api.map.baidu.com/images/weather/day/yin.png","nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png","weather":"陰轉(zhuǎn)多云","wind":"北風(fēng)微風(fēng)","temperature":"8 ~ 4℃"},{"date":"周五","dayPictureUrl":"http://api.map.baidu.com/images/weather/day/duoyun.png","nightPictureUrl":"http://api.map.baidu.com/images/weather/night/qing.png","weather":"多云轉(zhuǎn)晴","wind":"西北風(fēng)3-4級(jí)","temperature":"12 ~ 0℃"},{"date":"周六","dayPictureUrl":"http://api.map.baidu.com/images/weather/day/qing.png","nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png","weather":"晴轉(zhuǎn)多云","wind":"東北風(fēng)3-4級(jí)","temperature":"8 ~ 0℃"},{"date":"周日","dayPictureUrl":"http://api.map.baidu.com/images/weather/day/qing.png","nightPictureUrl":"http://api.map.baidu.com/images/weather/night/qing.png","weather":"晴","wind":"西風(fēng)微風(fēng)","temperature":"10 ~ -1℃"}]},{"currentCity":"徐州","pm25":"154","index":[{"title":"穿衣","zs":"較冷","tipt":"穿衣指數(shù)","des":"建議著厚外套加毛衣等服裝。年老體弱者宜著大衣、呢外套加羊毛衫。"},{"title":"洗車","zs":"較適宜","tipt":"洗車指數(shù)","des":"較適宜洗車，未來(lái)一天無(wú)雨，風(fēng)力較小，擦洗一新的汽車至少能保持一天。"},{"title":"旅游","zs":"適宜","tipt":"旅游指數(shù)","des":"天氣較好，但絲毫不會(huì)影響您出行的心情。溫度適宜又有微風(fēng)相伴，適宜旅游。"},{"title":"感冒","zs":"較易發(fā)","tipt":"感冒指數(shù)","des":"天氣較涼，較易發(fā)生感冒，請(qǐng)適當(dāng)增加衣服。體質(zhì)較弱的朋友尤其應(yīng)該注意防護(hù)。"},{"title":"運(yùn)動(dòng)","zs":"較不宜","tipt":"運(yùn)動(dòng)指數(shù)","des":"天氣較好，但考慮天氣寒冷，推薦您進(jìn)行各種室內(nèi)運(yùn)動(dòng)，若在戶外運(yùn)動(dòng)請(qǐng)注意保暖并做好準(zhǔn)備活動(dòng)。"},{"title":"紫外線強(qiáng)度","zs":"最弱","tipt":"紫外線強(qiáng)度指數(shù)","des":"屬弱紫外線輻射天氣，無(wú)需特別防護(hù)。若長(zhǎng)期在戶外，建議涂擦SPF在8-12之間的防曬護(hù)膚品。"}],"weather_data":[{"date":"周四 01月15日 (實(shí)時(shí)：6℃)","dayPictureUrl":"http://api.map.baidu.com/images/weather/day/duoyun.png","nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png","weather":"多云","wind":"南風(fēng)微風(fēng)","temperature":"10 ~ 3℃"},{"date":"周五","dayPictureUrl":"http://api.map.baidu.com/images/weather/day/duoyun.png","nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png","weather":"多云","wind":"北風(fēng)3-4級(jí)","temperature":"11 ~ -4℃"},{"date":"周六","dayPictureUrl":"http://api.map.baidu.com/images/weather/day/duoyun.png","nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png","weather":"多云","wind":"東風(fēng)微風(fēng)","temperature":"6 ~ -4℃"},{"date":"周日","dayPictureUrl":"http://api.map.baidu.com/images/weather/day/duoyun.png","nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png","weather":"多云","wind":"西風(fēng)3-4級(jí)","temperature":"11 ~ -1℃"}]}]}

以上這篇Java中Json字符串直接轉(zhuǎn)換為對(duì)象的方法(包括多層List集合)就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持腳本之家。

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