Help,please. how to get the earthquake information from USGS web site?

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Hi:
I want to get the earthquake information for USGS web site.
the URL is:http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_big.php[^]

I only want to the interested parameter，

CSS

MAG     UTC DATE-TIME      LAT      LON      DEPTH    Region

MAP  6.2    2011/09/03 04:49:01      -56.551      -27.039   106.0    SOUTH SANDWICH ISLANDS REGION
MAP  5.1    2011/09/03 01:25:39       52.056     -171.567   51.2     FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
MAP  5.8    2011/09/03 01:06:56      -12.784      166.672   101.2    SANTA CRUZ ISLANDS

I want to use java to get the contents of the web's table.
the regular-expression may be the best way.
Could anyone help me on regular-expression?

Thanks a lot!

Posted 3-Sep-11 4:14am

Member 1855608

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Member 1855608 · Answer 1 · 2011-09-03T05:12:00

XML

Pattern p = Pattern.compile("<table([\\s\\S]+?)>([\\s\\S]+?)</table>",Pattern.MULTILINE);// find the tables contents.
    Matcher m = p.matcher(sb.toString());
    while(m.find()){
//    System.out.println(m.group()); //fine the tables content is OK
    Pattern p1 = Pattern.compile("<table.*>(<tr>(<td.*>.*</td>){6}</tr>)+</table>");//may be something wrong in the line
    Matcher m1 = p1.matcher(m.group());
    if (m1.find()) {
       System.out.println(m1.group(0)+"__"+m1.group(4));
    }
    System.out.println("-----------------------");
    }

please help.

Member 1855608 · Answer 2 · 2011-09-03T15:31:00

the following do well,but it is not the best. Could it be Optimized more?

XML

Pattern p = Pattern.compile("<table([\\s\\S]+?)>([\\s\\S]+?)</table>",Pattern.MULTILINE|Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(sb.toString());
String str="";
 while(m.find()){
     Pattern pTr = Pattern.compile("<tr.*?>.*?<\\s*/tr.*?>");
    Matcher mTr = pTr.matcher(m.group());
     Pattern pTd = Pattern.compile("<td.*?>.*?<\\s*/td.*?>");
     Matcher mTd = null;
    while (mTr.find()) {
         mTd = pTd.matcher(mTr.group());
        while (mTd.find()) {
            str=str+(mTd.group().replaceAll("<.*?>", "").replace("&nbsp;", "") + "\t");
           }
        System.out.println(str );
        str="";
      }
   }

Help,please. how to get the earthquake information from USGS web site?

2 solutions

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