Java中Json字符串直接转换为对象的方法(包括多层List集合)

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

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查字典教程网。