Java中Json字符串直接转换为对象的方法(包括多层List集合)
投稿:jingxian
下面小编就为大家带来一篇Java中Json字符串直接转换为对象的方法(包括多层List集合)。小编觉得挺不错的,现在就分享给大家,也给大家做个参考。一起跟随小编过来看看吧
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:
// 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:
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; } }
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; } }
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; } }
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
{"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℃"}]}]}
以上这篇Java中Json字符串直接转换为对象的方法(包括多层List集合)就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持脚本之家。