yahoo的天气预报
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
class GetWeatherInfo {
public static HashMap<String, String> cityCode = new HashMap<String, String>();
private final String[] dictionaryStrings = { "龙卷风", "热带风暴", "飓风", "强雷阵雨", "雷阵雨", "小雨加雪", "雨加冰雹", "雪加冰雹", "冰雨", "毛毛雨", "冻雨",
"阵雨", "阵雨", "小雪", "零星小雪", "高吹雪", "雪", "冰雹", "雨夹雪", "尘", "雾", "薄雾", "多烟的", "大风", "有风", "寒冷", "阴天", "夜间阴天", "白天阴天",
"夜间多云", "白天多云", "夜间清亮", "晴朗", "转晴", "转晴", "雨夹冰雹", "热", "雷阵雨", "雷阵雨", "雷阵雨", "雷阵雨", "大雪", "阵雪", "大雪", "多云", "雷", "阵雪",
"雷雨" };
public static HashMap<String, String> cityCode = new HashMap<String, String>();
private final String[] dictionaryStrings = { "龙卷风", "热带风暴", "飓风", "强雷阵雨", "雷阵雨", "小雨加雪", "雨加冰雹", "雪加冰雹", "冰雨", "毛毛雨", "冻雨",
"阵雨", "阵雨", "小雪", "零星小雪", "高吹雪", "雪", "冰雹", "雨夹雪", "尘", "雾", "薄雾", "多烟的", "大风", "有风", "寒冷", "阴天", "夜间阴天", "白天阴天",
"夜间多云", "白天多云", "夜间清亮", "晴朗", "转晴", "转晴", "雨夹冰雹", "热", "雷阵雨", "雷阵雨", "雷阵雨", "雷阵雨", "大雪", "阵雪", "大雪", "多云", "雷", "阵雪",
"雷雨" };
public GetWeatherInfo() {
initCitys();
}
initCitys();
}
/* 初始化城市代号 */
private void initCitys() {
cityCode.put("北京", "0008");
cityCode.put("天津", "0133");
cityCode.put("武汉", "0138");
cityCode.put("杭州", "0044");
cityCode.put("合肥 ", "0448");
cityCode.put("上海 ", "0116");
cityCode.put("福州 ", "0031");
cityCode.put("重庆 ", "0017");
cityCode.put("南昌 ", "0097");
cityCode.put("香港 ", "0049");
cityCode.put("济南 ", "0064");
cityCode.put("澳门 ", "0512");
cityCode.put("郑州 ", "0165");
cityCode.put("呼和浩特 ", "0249");
cityCode.put("乌鲁木齐 ", "0135");
cityCode.put("长沙 ", "0013");
cityCode.put("银川 ", "0259");
cityCode.put("广州 ", "0037");
cityCode.put("拉萨 ", "0080");
cityCode.put("海口 ", "0502");
cityCode.put("南京 ", "0100");
cityCode.put("成都 ", "0016");
cityCode.put("石家庄 ", "0122");
cityCode.put("贵阳 ", "0039");
cityCode.put("太原 ", "0129");
cityCode.put("昆明 ", "0076");
cityCode.put("沈阳 ", "0119");
cityCode.put("西安 ", "0141");
cityCode.put("长春 ", "0010");
cityCode.put("兰州 ", "0079");
cityCode.put("西宁 ", "0236");
}
private void initCitys() {
cityCode.put("北京", "0008");
cityCode.put("天津", "0133");
cityCode.put("武汉", "0138");
cityCode.put("杭州", "0044");
cityCode.put("合肥 ", "0448");
cityCode.put("上海 ", "0116");
cityCode.put("福州 ", "0031");
cityCode.put("重庆 ", "0017");
cityCode.put("南昌 ", "0097");
cityCode.put("香港 ", "0049");
cityCode.put("济南 ", "0064");
cityCode.put("澳门 ", "0512");
cityCode.put("郑州 ", "0165");
cityCode.put("呼和浩特 ", "0249");
cityCode.put("乌鲁木齐 ", "0135");
cityCode.put("长沙 ", "0013");
cityCode.put("银川 ", "0259");
cityCode.put("广州 ", "0037");
cityCode.put("拉萨 ", "0080");
cityCode.put("海口 ", "0502");
cityCode.put("南京 ", "0100");
cityCode.put("成都 ", "0016");
cityCode.put("石家庄 ", "0122");
cityCode.put("贵阳 ", "0039");
cityCode.put("太原 ", "0129");
cityCode.put("昆明 ", "0076");
cityCode.put("沈阳 ", "0119");
cityCode.put("西安 ", "0141");
cityCode.put("长春 ", "0010");
cityCode.put("兰州 ", "0079");
cityCode.put("西宁 ", "0236");
}
private Document getWeatherXML(String cityCode) throws IOException {
//http://weather.yahooapis.com/forecastrss?w=2442047&u=c
URL url = new URL("http://weather.yahooapis.com/forecastrss?w=" + cityCode + "&u=c");
URLConnection connection = url.openConnection();
Document Doc = stringToElement(connection.getInputStream());
return Doc;
}
URL url = new URL("http://weather.yahooapis.com/forecastrss?w=" + cityCode + "&u=c");
URLConnection connection = url.openConnection();
Document Doc = stringToElement(connection.getInputStream());
return Doc;
}
/* 保存获取的天气信息XML文档 */
private void saveXML(Document Doc, String Path) {
TransformerFactory transFactory = TransformerFactory.newInstance();
Transformer transformer;
try {
transformer = transFactory.newTransformer();
DOMSource domSource = new DOMSource(Doc);
File file = new File(Path);
FileOutputStream out = new FileOutputStream(file);
StreamResult xmlResult = new StreamResult(out);
transformer.transform(domSource, xmlResult);
} catch (Exception e) {
System.out.println("保存文件出错!");
}
}
private void saveXML(Document Doc, String Path) {
TransformerFactory transFactory = TransformerFactory.newInstance();
Transformer transformer;
try {
transformer = transFactory.newTransformer();
DOMSource domSource = new DOMSource(Doc);
File file = new File(Path);
FileOutputStream out = new FileOutputStream(file);
StreamResult xmlResult = new StreamResult(out);
transformer.transform(domSource, xmlResult);
} catch (Exception e) {
System.out.println("保存文件出错!");
}
}
/* 获取天气信息 */
public String getWeather(String city) {
String result = null;
try {
Document doc = getWeatherXML(GetWeatherInfo.cityCode.get(city));
NodeList nodeList = doc.getElementsByTagName("channel");
for (int i = 0; i < nodeList.getLength(); i++) {
Node node = nodeList.item(i);
NodeList nodeList1 = node.getChildNodes();
for (int j = 0; j < nodeList1.getLength(); j++) {
Node node1 = nodeList1.item(j);
if (node1.getNodeName().equalsIgnoreCase("item")) {
NodeList nodeList2 = node1.getChildNodes();
for (int k = 0; k < nodeList2.getLength(); k++) {
Node node2 = nodeList2.item(k);
if (node2.getNodeName().equalsIgnoreCase("yweather:forecast")) {
NamedNodeMap nodeMap = node2.getAttributes();
Node day =nodeMap.getNamedItem("day");
Node lowNode = nodeMap.getNamedItem("low");
Node highNode = nodeMap.getNamedItem("high");
Node codeNode = nodeMap.getNamedItem("code");
//String day = "今天";
if (result == null) {
result = "";
} else {
//day = "\n明天";
}
result = result + day.getNodeValue() + " " + dictionaryStrings[Integer.parseInt(codeNode.getNodeValue())]
+ "\t最低温度:" + lowNode.getNodeValue() + "℃ \t最高温度:" + highNode.getNodeValue() + "℃ \r\n";
}
}
}
}
}
saveXML(doc, "C:\\Users\\ygui\\Desktop\\Weather.xml");
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
public String getWeather(String city) {
String result = null;
try {
Document doc = getWeatherXML(GetWeatherInfo.cityCode.get(city));
NodeList nodeList = doc.getElementsByTagName("channel");
for (int i = 0; i < nodeList.getLength(); i++) {
Node node = nodeList.item(i);
NodeList nodeList1 = node.getChildNodes();
for (int j = 0; j < nodeList1.getLength(); j++) {
Node node1 = nodeList1.item(j);
if (node1.getNodeName().equalsIgnoreCase("item")) {
NodeList nodeList2 = node1.getChildNodes();
for (int k = 0; k < nodeList2.getLength(); k++) {
Node node2 = nodeList2.item(k);
if (node2.getNodeName().equalsIgnoreCase("yweather:forecast")) {
NamedNodeMap nodeMap = node2.getAttributes();
Node day =nodeMap.getNamedItem("day");
Node lowNode = nodeMap.getNamedItem("low");
Node highNode = nodeMap.getNamedItem("high");
Node codeNode = nodeMap.getNamedItem("code");
//String day = "今天";
if (result == null) {
result = "";
} else {
//day = "\n明天";
}
result = result + day.getNodeValue() + " " + dictionaryStrings[Integer.parseInt(codeNode.getNodeValue())]
+ "\t最低温度:" + lowNode.getNodeValue() + "℃ \t最高温度:" + highNode.getNodeValue() + "℃ \r\n";
}
}
}
}
}
saveXML(doc, "C:\\Users\\ygui\\Desktop\\Weather.xml");
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
public Document stringToElement(InputStream input) {
try {
DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document doc = db.parse(input);
return doc;
} catch (Exception e) {
return null;
}
}
}
try {
DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document doc = db.parse(input);
return doc;
} catch (Exception e) {
return null;
}
}
}
public class Test {
public static void main(String arg[]) {
GetWeatherInfo info = new GetWeatherInfo();
String weather = info.getWeather("武汉");
System.out.println(weather);
}
}
public static void main(String arg[]) {
GetWeatherInfo info = new GetWeatherInfo();
String weather = info.getWeather("武汉");
System.out.println(weather);
}
}