396      技術社區[雲棲]

天氣預報 獲取日出日落的代碼

正則兩次，group(1)獲取時，group(2)獲取分，中間以:相連

華哥幫忙寫了一個LIST，獲取GROUP的值，List再依次讀出

package com.zzk.cn;
import java.awt.List;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class TestSun {
	public static void main(String[] args) {
		URL url = null;
		URLConnection conn = null;
		InputStream in = null;
		InputStreamReader isr = null;
		BufferedReader br = null;
		try {
			url = new URL("https://www.weather.com.cn/weather/101010100.shtml");
			conn = url.openConnection();
			in = conn.getInputStream();
			isr = new InputStreamReader(in,"utf8");
			br = new BufferedReader(isr);
			String line = "";
			String info="";
			while (null != (line = br.readLine())) {
				//System.out.println(line);
				info+=line;
			}
		
			//System.out.println(info);
			Pattern p=Pattern.compile("div\\sclass=.weatherTopright.*?</div>");//正則獲取網頁大致信息

			Matcher m=p.matcher(info);
			String s1="";
	    	while(m.find()) {
	    		s1=m.group();
	    		//System.out.println(s1);
	    	}
	    	
	    	String s2="";
	        Pattern p1=Pattern.compile("bold;.>(\\d+):(\\d+)</strong>");//正則獲取網頁日出日落信息
	    	//Pattern p1=Pattern.compile("<(/?\\s?br\\b)>");
	    	Matcher m1=p1.matcher(s1);
	    	//System.out.println(s1);
	    	ArrayList<String> a = new ArrayList<String>();
	    	while(m1.find()) {
	    		//m1.group(1);
	    	    String s=m1.group(1);
	    	    String s0=m1.group(2);
	    	    String result = s+":"+s0;
	    	    a.add(result);
	    	}
	    	System.out.println(a.get(0));
	    	System.out.println(a.get(1));
//	    	System.out.println(a.get(2));
//	    	System.out.println(a.get(3));
	    			
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (null != br) {
					br.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
			br = null;

			try {
				if (null != isr) {
					isr.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
			isr = null;

			try {
				if (null != in) {
					in.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
			in = null;
		}

	}
}

輸出：

07:31
16:51

最後更新：2017-04-02 06:52:16

  上一篇： 關於MySQL的boolean和tinyint(1)

  下一篇： MySQL Innodb數據庫性能實踐——熱點數據性能