java解析xml实例——获取天气信息

获取xml并解析其中的数据：

package getweather.xml;

import java.io.IOException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import getweather.beans.TodayWeather;
import getweather.beans.WeatherBean;

public class GetXml {
		/**
		 * 获取网页中的xml
		 * @param url 需要传入的网址
		 * @return 返回的xml数据内容,数据格式为org.jsoup.nodes.Document
		 */
	public Document getXml(String url){

		Document xmlContent = null;
		try {
			if((url!=null)||(("").equals(url))){
				xmlContent = Jsoup.connect(url)
						.data("query", "Java")
						.userAgent("Mozilla")
						.cookie("auth", "token")
						.timeout(3000)
						.post();
			}

		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return xmlContent;
	}

	/**
	 * 获取天气信息数据集合
	 * @param document 获取到的xml数据内容
	 * @param dataTagNames 需要从xml中获取的数据对应的TagName
	 * @return 返回包含天气数据内容的Map<String,String>集合
	 */

	public Map<String, String> getData(Document document,String dataTagNames[]){
		Map<String, String> weatherMap = new HashMap<String,String>();
		if(document!=null){
			for (String dataTagName : dataTagNames) {
				Elements elementsData = document.getElementsByTag(dataTagName);
				String data = elementsData.first().text();
				weatherMap.put(dataTagName, data);
			}

		}		

		return weatherMap;
}

	/**
	 * 获取天气信息数据集合(主要用于获取yesterday的天气信息)
	 * @param document 获取到的xml数据内容
	 * @param fatherTagName 需要从xml中获取的数据对应的TagName的父级标签的TagName
	 * @param dataTagNames 需要从xml中获取的数据对应的TagName
	 * @return 返回包含天气数据内容的Map<String,String>集合
	 */

	public Map<String, String> getData(Document document,String fatherTagName,String dataTagNames[]){
		Map<String, String> weatherMap = new HashMap<String,String>();
		if(document!=null){
			Element fatherElement = document.getElementsByTag(fatherTagName).first();
			Elements elementsData;
			for (String dataTagName : dataTagNames) {

				elementsData = fatherElement.getElementsByTag(dataTagName);
				if(!(elementsData.isEmpty())){
					for (Element element : elementsData) {
						weatherMap.put(element.tagName(), element.text());
					}
				}
			}

		}		

		return weatherMap;
}

	/**
	 * 获取天气信息数据集合(主要用于获取yesterday的天气信息)
	 * @param document 获取到的xml数据内容
	 * @param grandFatherTagName 需要从xml中获取的数据对应的TagName的祖父级标签的TagName
	 * @param fatherTagName 需要从xml中获取的数据对应的TagName的父级标签的TagName
	 * @param dataTagNames 需要从xml中获取的数据对应的TagName
	 * @return 返回包含天气数据内容的Map<String,String>集合
	 */

	public Map<String, String> getData(Document document,String grandFatherTagName,String fatherTagName,String dataTagNames[]){
		Map<String, String> weatherMap = new HashMap<String,String>();
		if(document!=null){
			Element fatherElement = (document.getElementsByTag(grandFatherTagName).first()).getElementsByTag(fatherTagName).first();
			Element elementsData;
			for (String dataTagName : dataTagNames) {
				elementsData = fatherElement.getElementsByTag(dataTagName).first();
						weatherMap.put(elementsData.tagName(), elementsData.text());
			}

		}		

		return weatherMap;
}

	public Elements getForecastWeather(Document document,String tagName){
		Elements weatherElements = null;
		if(document!=null){
			weatherElements = document.getElementsByTag(tagName);
		}
		return weatherElements;
	}

	public Map<String, String> getData(Element element,String dataTagNames[]){
		Map<String, String> weatherMap = new HashMap<String,String>();
		if(element!=null){
			for (String dataTagName : dataTagNames) {
				Elements elementsData = element.getElementsByTag(dataTagName);
				String data = elementsData.first().text();
				weatherMap.put(dataTagName, data);
			}

		}		

		return weatherMap;
}

	public Map<String, String> getData2(Element element,String sonTagName,String dataTagNames[]){
		Map<String, String> weatherMap = new HashMap<String,String>();
		Elements elementsData = null;
		if(element!=null){
			for (String dataTagName : dataTagNames) {
				elementsData = element.getElementsByTag(sonTagName).first().getElementsByTag(dataTagName);
				String data = elementsData.first().text();
				weatherMap.put(dataTagName, data);
			}

		}		

		return weatherMap;
}

	public TodayWeather getTodayW(){
		TodayWeather todayWeather = new TodayWeather();
		GetXml getweather = new GetXml();
		Document xml = getweather.getXml("http://wthrcdn.etouch.cn/WeatherApi?city=上海");
		String todayWeatherTagName[] ={"city","updatetime","wendu","fengli","shidu","fengxiang",
				"sunrise_1","sunset_1","aqi","pm25","suggest","quality","o3","co","pm10","so2",
				"no2"};
		Map<String, String> todayWeatherData = getweather.getData(xml,todayWeatherTagName);
		todayWeather.setWenDu(todayWeatherData.get("wendu"));
		todayWeather.setShiDu(todayWeatherData.get("shidu"));
		todayWeather.setQuality(todayWeatherData.get("quality"));
		todayWeather.setFengLi(todayWeatherData.get("fengli"));
		todayWeather.setFengXiang(todayWeatherData.get("fengxiang"));
		todayWeather.setSunrise(todayWeatherData.get("sunrise_1"));
		todayWeather.setSunset(todayWeatherData.get("sunset_1"));
		todayWeather.setAqi(todayWeatherData.get("aqi"));
		todayWeather.setPm25(todayWeatherData.get("pm25"));
		todayWeather.setO3(todayWeatherData.get("o3"));
		todayWeather.setCo(todayWeatherData.get("co"));
		todayWeather.setPm10(todayWeatherData.get("pm10"));
		todayWeather.setSo2(todayWeatherData.get("so2"));
		todayWeather.setNo2(todayWeatherData.get("no2"));
		todayWeather.setSuggest(todayWeatherData.get("suggest"));
		todayWeather.setUpdateTime(todayWeatherData.get("updatetime"));

		return todayWeather;
	}

	public WeatherBean getYesterdayW(){
		WeatherBean yWeatherBean = new WeatherBean();
		GetXml getweather = new GetXml();
		Document xml = getweather.getXml("http://wthrcdn.etouch.cn/WeatherApi?city=上海");
		String yesterdayWeatherTagNameSon[] = {"date_1","high_1","low_1"};
		String yesterdayWeatherTagNameGrandson[]={"type_1","fx_1","fl_1"};
		Map<String, String> yesterdayWeatherData = getweather.getData(xml,"yesterday",yesterdayWeatherTagNameSon);
		Map<String, String> yesterdayWeatherData2 = getweather.getData(xml,"yesterday","day_1",yesterdayWeatherTagNameGrandson);
		Map<String, String> yesterdayWeatherData3 = getweather.getData(xml,"yesterday","night_1",yesterdayWeatherTagNameGrandson);
		yWeatherBean.setDayWeatherDes(yesterdayWeatherData2.get("type_1"));
		yWeatherBean.setDayWindDirection(yesterdayWeatherData2.get("fx_1"));
		yWeatherBean.setDayWindType(yesterdayWeatherData2.get("fl_1"));
		yWeatherBean.setDate(yesterdayWeatherData.get("date_1"));
		yWeatherBean.setHightTemp(yesterdayWeatherData.get("high_1"));
		yWeatherBean.setLowTemp(yesterdayWeatherData.get("low_1"));
		yWeatherBean.setNightWeatherDes(yesterdayWeatherData3.get("type_1"));
		yWeatherBean.setNightWindDirection(yesterdayWeatherData3.get("fx_1"));
		yWeatherBean.setNightWindType(yesterdayWeatherData3.get("fl_1"));

		return yWeatherBean;
	}

	public List<WeatherBean> getForecasterdayW(){
		List<WeatherBean> fWeatherList = new LinkedList<>();
		WeatherBean fWeatherBean = null;
		GetXml getweather = new GetXml();
		Document xml = getweather.getXml("http://wthrcdn.etouch.cn/WeatherApi?city=上海");
		String forecastWeatherTagNameSon[] = {"date","high","low"};
		String forecastWeatherTagNameGrandson[] = {"type","fengxiang","fengli"};

		Elements weatherElements = getweather.getForecastWeather(xml,"weather");
		Map<String, String> forecastWeatherData =new HashMap<>();
		Map<String, String> forecastWeatherData2 =new HashMap<>();
		Map<String, String> forecastWeatherData3 =new HashMap<>();
		for (Element element :weatherElements ) {
			fWeatherBean = new WeatherBean();
			forecastWeatherData = getweather.getData(element, forecastWeatherTagNameSon);
			forecastWeatherData2 = getweather.getData2(element,"day", forecastWeatherTagNameGrandson);
			forecastWeatherData3 = getweather.getData2(element,"night",forecastWeatherTagNameGrandson);
			fWeatherBean.setDayWeatherDes(forecastWeatherData2.get("type"));
			fWeatherBean.setDayWindDirection(forecastWeatherData2.get("fengxiang"));
			fWeatherBean.setDayWindType(forecastWeatherData2.get("fengli"));
			fWeatherBean.setDate(forecastWeatherData.get("date"));
			fWeatherBean.setHightTemp(forecastWeatherData.get("high"));
			fWeatherBean.setLowTemp(forecastWeatherData.get("low"));
			fWeatherBean.setNightWeatherDes(forecastWeatherData3.get("type"));
			fWeatherBean.setNightWindDirection(forecastWeatherData3.get("fengxiang"));
			fWeatherBean.setNightWindType(forecastWeatherData3.get("fengli"));
			fWeatherList.add(fWeatherBean);

		}

		return fWeatherList;
	}	

}

　　today天气Beans

package getweather.beans;

public class TodayWeather {

	private String updateTime;  //数据更新时间
	private String wenDu;  //当前温度
	private String fengLi; //风力等级
	private String fengXiang; //风力等级
	private String shiDu;  //空气相对湿度
	private String sunrise;  //风向
	private String sunset;  //日出时间
	private String aqi;  //日落时间
	private String pm25;  //pm2.5浓度
	private String quality;  //空气质量描述
	private String o3;  //臭氧浓度
	private String co;  //一氧化碳浓度
	private String pm10;  //pm10浓度
	private String so2;  //二氧化硫浓度
	private String no2;  //二氧化氮浓度
	private String suggest;  //建议

	public TodayWeather() {
	}

	public String getUpdateTime() {
		return updateTime;
	}

	public void setUpdateTime(String updateTime) {
		this.updateTime = updateTime;
	}

	public String getWenDu() {
		return wenDu;
	}

	public void setWenDu(String wenDu) {
		this.wenDu = wenDu;
	}

	public String getFengLi() {
		return fengLi;
	}

	public void setFengLi(String fengLi) {
		this.fengLi = fengLi;
	}

	public String getShiDu() {
		return shiDu;
	}

	public void setShiDu(String shiDu) {
		this.shiDu = shiDu;
	}

	public String getSunrise() {
		return sunrise;
	}

	public void setSunrise(String sunrise) {
		this.sunrise = sunrise;
	}

	public String getSunset() {
		return sunset;
	}

	public void setSunset(String sunset) {
		this.sunset = sunset;
	}

	public String getAqi() {
		return aqi;
	}

	public void setAqi(String aqi) {
		this.aqi = aqi;
	}

	public String getPm25() {
		return pm25;
	}

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

	public String getQuality() {
		return quality;
	}

	public void setQuality(String quality) {
		this.quality = quality;
	}

	public String getO3() {
		return o3;
	}

	public void setO3(String o3) {
		this.o3 = o3;
	}

	public String getCo() {
		return co;
	}

	public void setCo(String co) {
		this.co = co;
	}

	public String getPm10() {
		return pm10;
	}

	public void setPm10(String pm10) {
		this.pm10 = pm10;
	}

	public String getSo2() {
		return so2;
	}

	public void setSo2(String so2) {
		this.so2 = so2;
	}

	public String getNo2() {
		return no2;
	}

	public void setNo2(String no2) {
		this.no2 = no2;
	}

	public String getSuggest() {
		return suggest;
	}

	public void setSuggest(String suggest) {
		this.suggest = suggest;
	}

	public String getFengXiang() {
		return fengXiang;
	}

	public void setFengXiang(String fengXiang) {
		this.fengXiang = fengXiang;
	}

}

　　Yesterday天气及未来天气Beans

package getweather.beans;

public class WeatherBean {
	private String date;//日期
	private String hightTemp;//最高温度
	private String lowTemp;//最低温度
	private String dayWeatherDes;//天气描述
	private String dayWindDirection;//风向
	private String dayWindType;//风力
	private String nightWeatherDes;//夜间天气描述
	private String nightWindDirection;//夜间风向
	private String nightWindType;//夜间风力等级

	public WeatherBean() {
	}

	public String getDate() {
		return date;
	}

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

	public String getHightTemp() {
		return hightTemp;
	}

	public void setHightTemp(String hightTemp) {
		this.hightTemp = hightTemp;
	}

	public String getLowTemp() {
		return lowTemp;
	}

	public void setLowTemp(String lowTemp) {
		this.lowTemp = lowTemp;
	}

	public String getDayWeatherDes() {
		return dayWeatherDes;
	}

	public void setDayWeatherDes(String dayWeatherDes) {
		this.dayWeatherDes = dayWeatherDes;
	}

	public String getDayWindDirection() {
		return dayWindDirection;
	}

	public void setDayWindDirection(String dayWindDirection) {
		this.dayWindDirection = dayWindDirection;
	}

	public String getDayWindType() {
		return dayWindType;
	}

	public void setDayWindType(String dayWindType) {
		this.dayWindType = dayWindType;
	}

	public String getNightWeatherDes() {
		return nightWeatherDes;
	}

	public void setNightWeatherDes(String nightWeatherDes) {
		this.nightWeatherDes = nightWeatherDes;
	}

	public String getNightWindDirection() {
		return nightWindDirection;
	}

	public void setNightWindDirection(String nightWindDirection) {
		this.nightWindDirection = nightWindDirection;
	}

	public String getNightWindType() {
		return nightWindType;
	}

	public void setNightWindType(String nightWindType) {
		this.nightWindType = nightWindType;
	}

	@Override
	public String toString() {
		return "WeatherBean [date=" + date + ", hightTemp=" + hightTemp + ", lowTemp=" + lowTemp + ", dayWeatherDes="
				+ dayWeatherDes + ", dayWindDirection=" + dayWindDirection + ", dayWindType=" + dayWindType
				+ ", nightWeatherDes=" + nightWeatherDes + ", nightWindDirection=" + nightWindDirection
				+ ", nightWindType=" + nightWindType + "]";
	}

}