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null
		for (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();
		}

	}

3.结果

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

转载学习作品，如若得罪版主。sorry。

有需要的话以下有原链接！