Java-xml解析 -PULL

最新推荐文章于 2025-06-07 10:09:50 发布

转载最新推荐文章于 2025-06-07 10:09:50 发布 · 190 阅读

本文介绍了一个使用Java解析XML天气预报数据的应用案例。通过XmlPullParser解析特定URL提供的XML文件，提取城市及其天气信息，并将这些信息封装到City类的对象中。最终以列表形式返回所有城市的天气数据。

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package packet;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;

public class demo {
public static void main(String[] args) {
System.out.println(getData());
}

public static List<City> getData() {
City city = null;

List<City> list = null;
try {
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser parser = factory.newPullParser();
parser.setInput(new FileReader("http://flash.weather.com.cn/wmaps/xml/china.xml"));
int type = parser.getEventType();
while (type != 1) {
// 获得标签名
String tag = parser.getName();

switch (type) {
case 0:
list = new ArrayList<City>();
break;
case 2:// startElement
if (tag.equals("city")) {
city = new City();
int n = parser.getAttributeCount();
for (int i = 0; i < n; i++) {
String name = parser.getAttributeName(i);
String value = parser.getAttributeValue(i);
if (name.equals("quName")) {
city.quName = value;
}
if (name.equals("pyName")) {
city.pyName = value;
}
if (name.equals("cityname")) {
city.cityname = value;
}
if (name.equals("state1")) {
city.state1 = value;
}
if (name.equals("state2")) {
city.state2 = value;
}
if (name.equals("stateDetailed")) {
city.stateDetailed = value;
}
if (name.equals("tem1")) {
city.tem1 = value;
}
if (name.equals("tem2")) {
city.tem2 = value;
}
if (name.equals("windState")) {
city.windState = value;
}

}

}

break;
case 3:
if (tag.equals("city")) {
list.add(city);
}

break;

}
type = parser.next();

}

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

return list;
}

}

class City {
String quName;
String pyName;
String cityname;
String state1;
String state2;
String stateDetailed;
String tem1;
String tem2;
String windState;

@Override
public String toString() {
return "City [quName=" + quName + ", pyName=" + pyName + ", cityname="
+ cityname + ", state1=" + state1 + ",state2=" + state2
+ ", stateDetailed=" + stateDetailed + ", tem1=" + tem1
+ ", tem2=" + tem2 + ", windState=" + windState + "]";
}

}