package com.weather;
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;
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 GetWeatherInfo() {
initCitys();
}
/* 初始化城市代号 */
private void initCitys() {
cityCode.put("北京", "2151330");
cityCode.put("天津", "2159908");
cityCode.put("武汉", "2163866");
cityCode.put("杭州", "2132574");
cityCode.put("合肥", "2127866");
cityCode.put("上海", "2151849");
cityCode.put("福州", "2139963");
cityCode.put("重庆", "29195242");
cityCode.put("南昌", "2133704");
cityCode.put("香港", "2165352");
cityCode.put("济南", "2168327");
cityCode.put("澳门", "1887901");
cityCode.put("郑州", "2172736");
cityCode.put("呼和浩特", "2149760");
cityCode.put("乌鲁木齐", "2143692");
cityCode.put("长沙", "2142699");
cityCode.put("银川", "2150551");
cityCode.put("广州", "2161838");
cityCode.put("拉萨", "2144789");
cityCode.put("海口", "2162779");
cityCode.put("南京", "2137081");
cityCode.put("成都", "2158433");
cityCode.put("石家庄", "2171287");
cityCode.put("贵阳", "2146703");
cityCode.put("太原", "2154547");
cityCode.put("昆明", "2160693");
cityCode.put("沈阳", "2148332");
cityCode.put("西安", "2157249");
cityCode.put("长春", "2137321");
cityCode.put("兰州", "2145605");
cityCode.put("西宁", "2138941");
cityCode.put("深圳", "2161853");
}
private Document getWeatherXML(String cityCode) throws IOException {
URL url = new URL("http://xml.weather.yahoo.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！");
}
}
/* 获取天气信息 */
public String getWeather(String city) {
String result = null;
try {
String cityCode = GetWeatherInfo.cityCode.get(city);
System.out.println(cityCode);
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 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
+ " "
+ dictionaryStrings[Integer
.parseInt(codeNode
.getNodeValue())]
+ "\t最低温度：" + lowNode.getNodeValue()
+ "℃ \t最高温度：" + highNode.getNodeValue()
+ "℃ ";
}else if(node2.getNodeName().equals("description")){
System.out.println(node2.getFirstChild().getNodeValue());
String content = node2.getFirstChild().getNodeValue();
int a = content.indexOf("<br />");
String startStr = content.substring(0, a);
System.out.println(startStr);
}else if(node2.getNodeName().equals("yweather:condition")){
NamedNodeMap nodeMap = node2.getAttributes();
Node codeNode = nodeMap.getNamedItem("code");
Node dateNode = nodeMap.getNamedItem("date");
Node tempNode = nodeMap.getNamedItem("temp");
Node textNode = nodeMap.getNamedItem("text");
System.out.println("天气:"+dictionaryStrings[Integer.valueOf(codeNode.getNodeValue())-1]+",当前时间:"
+dateNode.getNodeValue()+",气温(度):"+tempNode.getNodeValue()+",Weather Condition:"+textNode.getNodeValue());
}
}
}
}
}
//saveXML(doc, "E:\\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;
}
}
}
public class TestWeather {
public static void main(String arg[]) {
GetWeatherInfo info = new GetWeatherInfo();
String weather = info.getWeather("上海");
System.out.println(weather);
}
}
如何得到当前文件的大小呢：单位 B KB M
String size = Formatter.formatFileSize(Demo.this,123424545);
Log.d("test", "size"+ size );
问题描述：
Eclipse提示"artistslist cannot be resolved or is not a field"..
clean and re-genning R.java 发现R.java已经正常生成了资源文件，还是" re-genning R.java"
解决：
Eclipse imports the R class from the android package (import android.R;)and stops using mine. 囧