根据新浪天气API获取各地天气状况(Java实现)

1.代码块

package com.quickmanager.util;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStream;import java.io.FileInputStream;import java.net.MalformedURLException;import java.net.URL;import java.util.HashMap;import java.util.Map;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.parsers.ParserConfigurationException;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.Node;import org.w3c.dom.NodeList;import org.xml.sax.SAXException;/*** 解析xml文档，包括本地文档和url* @author cyxl* @version 1.0 2012-05-24* @since 1.0**/public class XmlParser {InputStream inStream;Element root;public InputStream getInStream() {return inStream;}public void setInStream(InputStream inStream) {this.inStream = inStream;}public Element getRoot() {return root;}public void setRoot(Element root) {this.root = root;}public XmlParser() {}public XmlParser(InputStream inStream) {if (inStream != null) {this.inStream = inStream;DocumentBuilderFactory domfac = DocumentBuilderFactory.newInstance();try {DocumentBuilder domBuilder = domfac.newDocumentBuilder();Document doc = domBuilder.parse(inStream);root = doc.getDocumentElement();} catch (ParserConfigurationException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}public XmlParser(String path) {InputStream inStream = null;try {inStream = new FileInputStream(path);} catch (FileNotFoundException e1) {e1.printStackTrace();}if (inStream != null) {this.inStream = inStream;DocumentBuilderFactory domfac = DocumentBuilderFactory.newInstance();try {DocumentBuilder domBuilder = domfac.newDocumentBuilder();Document doc = domBuilder.parse(inStream);root = doc.getDocumentElement();} catch (ParserConfigurationException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}public XmlParser(URL url) {InputStream inStream = null;try {inStream = url.openStream();} catch (IOException e1) {e1.printStackTrace();}if (inStream != null) {this.inStream = inStream;DocumentBuilderFactory domfac = DocumentBuilderFactory.newInstance();try {DocumentBuilder domBuilder = domfac.newDocumentBuilder();Document doc = domBuilder.parse(inStream);root = doc.getDocumentElement();} catch (ParserConfigurationException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}/**** @param nodes* @return 单个节点多个值以分号分隔*/public Map<String, String> getValue(String[] nodes) {if (inStream == null || root==null) {return null;}Map<String, String> map = new HashMap<String, String>();// 初始化每个节点的值为nullfor (int i = 0; i < nodes.length; i++) {map.put(nodes[i], null);}// 遍历第一节点NodeList topNodes = root.getChildNodes();if (topNodes != null) {for (int i = 0; i < topNodes.getLength(); i++) {Node book = topNodes.item(i);if (book.getNodeType() == Node.ELEMENT_NODE) {for (int j = 0; j < nodes.length; j++) {for (Node node = book.getFirstChild(); node != null; node = node.getNextSibling()) {if (node.getNodeType() == Node.ELEMENT_NODE) {if (node.getNodeName().equals(nodes[j])) {//String val=node.getFirstChild().getNodeValue();String val = node.getTextContent();System.out.println(nodes[j] + ":" + val);// 如果原来已经有值则以分号分隔String temp = map.get(nodes[j]);if (temp != null && !temp.equals("")) {temp = temp + ";" + val;} else {temp = val;}map.put(nodes[j], temp);}}}}}}}return map;}}

2.测试代码

<pre name="code" class="html">public static void main(String[] args) {String link = "http://php.weather.sina.com.cn/xml.php?city=%D6%D8%C7%EC&password=DJOYnieT8234jlsK&day=0";URL url;String path = "test.xml";try {url = new URL(link);System.out.println(url);// InputStream inStream= url.openStream();// InputStream inStream=new FileInputStream(new File("test.xml"));XmlParser parser = new XmlParser(url);String[] nodes = {"status1","temperature1","temperature2"};Map<String, String> map = parser.getValue(nodes);System.out.println(map.get(nodes[0]));} catch (MalformedURLException e) {e.printStackTrace();}}

<pre name="code" class="java">http://php.weather.sina.com.cn/xml.php?city=%D6%D8%C7%EC&password=DJOYnieT8234jlsK&day=0status1:阵雨temperature1:21temperature2:18阵雨