Java 时间转换+正则匹配+读文件_年份转换正则 java-优快云博客

本文演示了如何使用Java进行日期字符串的解析并转换为时间戳，同时展示了从文件中读取数据并利用正则表达式进行内容匹配的方法。

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import java.io.BufferedReader;
import java.io.FileReader;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Pattern;
import java.util.regex.Matcher;

public class test {
public static void main(String[] args) throws ParseException {

SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = df.parse( "2012-05-01 00:00:00" );
long ss = date.getTime()/1000;
System.out.println(ss);

//String s = "2012-05-01 00:00:00,\"GET /adpolestar/wayl/;ad=62BB89A6_9E0D_F662_B8CE_2212C0C1AC49;ap=72B6AE94_39E2_E3B5_20FF_2F53156D36F9;mac=00E04CC2E35E;pu=funshion;ext_key=;/?http://www.hysjsz.com/ HTTP/1.1\",302,\"ad_id=62BB89A6_9E0D_F662_B8CE_2212C0C1AC49;lang=zh-cn\",221.216.135.109,adk.funshion.com,\"-\",\"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB7.2; 4399Box.560; 4399Box.560; 360SE)\",\"95461335020794511\"";
try {
FileReader reader = new FileReader(args[0]);
BufferedReader br = new BufferedReader(reader);
String s = null;
while ((s = br.readLine()) != null) {
Pattern p = Pattern
.compile("([^,]*),([^;]*);ad=([^;]*);ap=([^;]*);mac=([^;]*);([^\"]*)\",([^,]*),(\"[^\"]*)\",([^,]*),([^,]*),\"([^\"]*)\",\"([^\"]*)\",\"([^\"]*)\"");
Matcher m = p.matcher(s);

boolean isvalid = m.matches();
if (!isvalid) {
System.out.println(s);
}
else{
String mac = m.group(5);
if(mac.isEmpty())
{
System.out.println("xxx:" + s);
mac = "-1";
}
System.out.println(mac + "\t" + m.group(1) + "\t"
+ m.group(4) + "\t" + m.group(3) + "\t" + m.group(9) + "\t"
+ m.group(13));
}
}
br.close();
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}