本文主要是介绍Java中Json字符串直接转换为对象(包括多层List集合 嵌套),希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
http://blog.csdn.net/catoop/article/details/42744705
使用到的类:net.sf.json.JSONObject
使用JSON时,除了要导入JSON网站上面下载的json-lib-2.2-jdk15.jar包之外,还必须有其它几个依赖包:commons-beanutils.jar,commons-httpclient.jar,commons-lang.jar,ezmorph.jar,morph-1.0.1.jar
下面是例子代码:
[java] view plain copy
- // JSON转换
- 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);
- // 将JSON转换成WeatherBean_Baidu
- WeatherBean_Baidu weather = (WeatherBean_Baidu) JSONObject.toBean(jsonObj,
- WeatherBean_Baidu.class, classMap);
- System.out.println(weather.getResults());
使用到的几个JAVA类代码:
[html] view plain copy
- package com.lenovo.conference.entity.vo;
- import java.io.Serializable;
- import java.util.List;
- /**
- * 天气Bean
- *
- * @author SHANHY
- *
- */
- @SuppressWarnings("serial")
- public class WeatherBean_Baidu implements Serializable {
- private String error;//错误号
- private String status;//状态值
- private String date;//日期
- private List<WeatherBean_Baidu_City> results;//城市天气预报集合(因为一次可以查询多个城市)
- 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;
- }
- }
[java] view plain copy
- package com.lenovo.conference.entity.vo;
- import java.io.Serializable;
- import java.util.List;
- /**
- * 天气Bean
- *
- * @author SHANHY
- *
- */
- @SuppressWarnings("serial")
- public class WeatherBean_Baidu_City implements Serializable {
- private String currentCity;//城市名称
- private String pm25;//pm2.5值
- private List<WeatherBean_Baidu_City_Index> index;//指数集合
- private List<WeatherBean_Baidu_City_Weatherdata> weather_data;//几天的天气集合
- 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;
- }
- }
[java] view plain copy
- package com.lenovo.conference.entity.vo;
- import java.io.Serializable;
- /**
- * 天气Bean
- *
- * @author SHANHY
- *
- */
- @SuppressWarnings("serial")
- public class WeatherBean_Baidu_City_Weatherdata implements Serializable {
- private String date;// 日期
- private String dayPictureUrl;// 白天的天气图片
- private String nightPictureUrl;// 晚上的天气图片
- private String weather;// 天气
- private String wind;// 风向
- private String temperature;// 温度
- 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;
- }
- }
[java] view plain copy
- package com.lenovo.conference.entity.vo;
- import java.io.Serializable;
- /**
- * 天气Bean
- *
- * @author SHANHY
- *
- */
- @SuppressWarnings("serial")
- public class WeatherBean_Baidu_City_Index implements Serializable {
- private String title;//标题
- private String zs;//舒适度
- private String tipt;//指数简述
- private String des;//指数概述
- 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;
- }
- }
例子中解析所对应的JSON字符串
[html] view plain copy
- {"error":0,"status":"success","date":"2015-01-15","results":[{"currentCity":"南京","pm25":"83","index":[{"title":"穿衣","zs":"较冷","tipt":"穿衣指数","des":"建议着厚外套加毛衣等服装。年老体弱者宜着大衣、呢外套加羊毛衫。"},{"title":"洗车","zs":"较适宜","tipt":"洗车指数","des":"较适宜洗车,未来一天无雨,风力较小,擦洗一新的汽车至少能保持一天。"},{"title":"旅游","zs":"适宜","tipt":"旅游指数","des":"天气较好,气温稍低,会感觉稍微有点凉,不过也是个好天气哦。适宜旅游,可不要错过机会呦!"},{"title":"感冒","zs":"少发","tipt":"感冒指数","des":"各项气象条件适宜,无明显降温过程,发生感冒机率较低。"},{"title":"运动","zs":"较不宜","tipt":"运动指数","des":"阴天,且天气寒冷,推荐您在室内进行低强度运动;若坚持户外运动,请选择合适的运动并注意保暖。"},{"title":"紫外线强度","zs":"最弱","tipt":"紫外线强度指数","des":"属弱紫外线辐射天气,无需特别防护。若长期在户外,建议涂擦SPF在8-12之间的防晒护肤品。"}],"weather_data":[{"date":"周四 01月15日 (实时:6℃)","dayPictureUrl":"http://api.map.baidu.com/images/weather/day/yin.png","nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png","weather":"阴转多云","wind":"北风微风","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":"多云转晴","wind":"西北风3-4级","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":"晴转多云","wind":"东北风3-4级","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":"西风微风","temperature":"10 ~ -1℃"}]},{"currentCity":"徐州","pm25":"154","index":[{"title":"穿衣","zs":"较冷","tipt":"穿衣指数","des":"建议着厚外套加毛衣等服装。年老体弱者宜着大衣、呢外套加羊毛衫。"},{"title":"洗车","zs":"较适宜","tipt":"洗车指数","des":"较适宜洗车,未来一天无雨,风力较小,擦洗一新的汽车至少能保持一天。"},{"title":"旅游","zs":"适宜","tipt":"旅游指数","des":"天气较好,但丝毫不会影响您出行的心情。温度适宜又有微风相伴,适宜旅游。"},{"title":"感冒","zs":"较易发","tipt":"感冒指数","des":"天气较凉,较易发生感冒,请适当增加衣服。体质较弱的朋友尤其应该注意防护。"},{"title":"运动","zs":"较不宜","tipt":"运动指数","des":"天气较好,但考虑天气寒冷,推荐您进行各种室内运动,若在户外运动请注意保暖并做好准备活动。"},{"title":"紫外线强度","zs":"最弱","tipt":"紫外线强度指数","des":"属弱紫外线辐射天气,无需特别防护。若长期在户外,建议涂擦SPF在8-12之间的防晒护肤品。"}],"weather_data":[{"date":"周四 01月15日 (实时: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":"南风微风","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":"北风3-4级","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":"东风微风","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":"西风3-4级","temperature":"11 ~ -1℃"}]}]}
这篇关于Java中Json字符串直接转换为对象(包括多层List集合 嵌套)的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!