如何仅复制日志文件中的最后一小时数据？ [英] How do I copy only last hour data from a log file?

问题描述

我需要读取包含一天数据的日志文件。现在我只需解析最后几小时的数据，无论最后一次在日志文件中是什么...我已经编写了一个代码，它将从文件的最后一行读取..

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I need to read a log file which contains one day data. Now I need to parse only the last hours data, whatever the last time may be in the log file... I have written a code which will read from the last line of the file..

<pre lang="java">paths = f1.listFiles();
for(File path:paths) {

ReversedLinesFileReader reverse= new ReversedLinesFileReader(path);

String line;
while ((line = reverse.readLine()) != null) {
    // process the line.
    if(line.contains(Constants.INFO)){
     System.out.println("line contains INFO");                          
    }
    }

现在我需要解析最后一小时数据。我的最后两行日志文件看起来像这样。

Now I need to parse only last one hour data. My last two lines of the log file looks like this.

INFO: May 30 23:59:59 Ignoring load report from EX8103 for DT5243 as it is not assigned to a loading tool.

INFO: May 30 23:59:59 Assignment succeeded: Sat May 31 00:00:01 WST 2014: SUCCESS DT4206

抱歉，我在这里粘贴代码。这是向后读取文件的代码。

[edit from="OP"]
Sorry for the trouble, I am pasting my code here. This is the code which reads the file backwards.

package com.Test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.io.input.ReversedLinesFileReader;








/**
 * Created with IntelliJ IDEA.
 * User: kumarao
 * Date: 24/5/14
 * Time: 3:41 PM
 * To change this template use File | Settings | File Templates.
 */
public class ServerFileProcessor {

	static File f1=null;
    private Date date;
    private static PropertiesReader propertiesReader;
    static File[] paths;
    
    /*public ServerFileProcessor() {
    	propertiesReader = new PropertiesReader();
    	propertiesReader.load("timeGap.properties");
    	
	}
	
*/  
final static Pattern pattern = Pattern.compile(Constants.TIME_PATTERN);

static SimpleDateFormat simpleDateFormat = new SimpleDateFormat("HH:mm:ss");
public static void main() throws IOException {
	propertiesReader = new PropertiesReader();
	propertiesReader.load("Server.properties");
	f1= new File(propertiesReader.getPropertyValue("FOLDER.serverLogs"));
	paths = f1.listFiles();
	for(File path:paths) {
		ReversedLinesFileReader reverse= new ReversedLinesFileReader(path);
    
    String line;
    while ((line = reverse.readLine()) != null) {
        // process the line.
        if(line.contains(Constants.INFO)){
        	Scanner sc = new Scanner(line);
            Date time = null;
            SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
            while(sc.hasNextLine()) {
                final String line1 = sc.nextLine();

                try {
                    Matcher matcher = pattern.matcher(line1);
                    String timeStr = null;
                    while (matcher.find()) {
                        timeStr = matcher.group(1);

                    }
                    time = dateFormat.parse(timeStr);
                    System.out.println(time);
                } catch (ParseException e) {
                    e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
                }
            }       	
        }
}
    
    }
	}

}

这是我的日志文件的一部分：

This is a part of my log file:

SEVERE: number of fids inserted do not match number of fids returned by Transaction Response.  Got:1 expected: 0
INFO: Jun 13 23:59:51 Not updating DT6023 with delay information: 02_Crib for DT6023 from 23:59:50 13 Jun 14 to 00:43:50 14 Jun 14 
Jun 13, 2014 11:59:52 PM org.geotools.data.wfs.v1_0_0.WFSTransactionState commit
SEVERE: number of fids inserted do not match number of fids returned by Transaction Response.  Got:1 expected: 0
INFO: Jun 13 23:59:52 DT5204 ASSIGNED to DUMP SABM at TSFROM_Skyway_Ext into processor TSFROM_Skyway_Ex. 
INFO: Jun 13 23:59:52 Assignment succeeded: Fri Jun 13 23:59:53 WST 2014: SUCCESS DT5204 
INFO: Jun 13 23:59:52 DT4155 ASSIGNED to DUMP SADE at VOK_V0002 into processor VOK_V0002. 
INFO: Jun 13 23:59:52 Assignment succeeded: Fri Jun 13 23:59:52 WST 2014: SUCCESS DT4155 
INFO: Jun 13 23:59:53 Low Z 588,840.96 m, 7,549,399 m, 546.82 m corrected to 551.2 m for EX8105 
INFO: Jun 13 23:59:54 Cycle fuel usage estimate was inaccurate: DT5210 estimated fuel amount 0 l was compared to 92.07 l 
INFO: Jun 13 23:59:55 Low Z 590,262.02 m, 7,553,127.96 m, 545.39 m corrected to 546.37 m for WL7024 
Jun 13, 2014 11:59:55 PM org.geotools.data.wfs.v1_0_0.WFSTransactionState commit
SEVERE: number of fids inserted do not match number of fids returned by Transaction Response.  Got:1 expected: 0
INFO: Jun 13 23:59:55 TruckLoadMessage DT5205 VOK_01_B EX8101 UNKNOWN 
Jun 13, 2014 11:59:57 PM org.geotools.data.wfs.v1_0_0.WFSTransactionState commit
SEVERE: number of fids inserted do not match number of fids returned by Transaction Response.  Got:1 expected: 0
Jun 13, 2014 11:59:57 PM org.geotools.data.wfs.v1_0_0.WFSTransactionState commit
SEVERE: number of fids inserted do not match number of fids returned by Transaction Response.  Got:1 expected: 0
Jun 13, 2014 11:59:58 PM org.geotools.data.wfs.v1_0_0.WFSTransactionState commit
SEVERE: number of fids inserted do not match number of fids returned by Transaction Response.  Got:1 expected: 0
Jun 13, 2014 11:59:59 PM org.geotools.data.wfs.v1_0_0.WFSTransactionState commit
SEVERE: number of fids inserted do not match number of fids returned by Transaction Response.  Got:1 expected: 0
PERFORMANCE: Jun 13 23:59:59 Service 'sendDelayRequest' RPC took too long: 150,002 millis [ServiceProviderProxy] Thread pool-1-thread-1140
INFO: Jun 13 23:59:59 Updating WL7106 with active delay information: {startTime=Fri Jun 13 23:24:57 WST 2014, timestamp=Fri Jun 13 23:24:59 WST 2014, duration=-1, interfaceName=Assignment, delayId=178, machine=WL7106} 
Jun 13, 2014 11:59:59 PM org.geotools.data.wfs.v1_0_0.WFSTransactionState commit
SEVERE: number of fids inserted do not match number of fids returned by Transaction Response.  Got:1 expected: 0

我只需要读取最后一小时的日志文件。无论最后一小时是什么。我现在在我的控制台中得到这个值..

I need to read only the last hour log file. Whatever the last hour may be. I am getting this value in my console now..

Thu Jan 01 00:00:04 IST 1970
Thu Jan 01 00:00:04 IST 1970
Thu Jan 01 00:00:04 IST 1970
Thu Jan 01 00:00:04 IST 1970
Thu Jan 01 00:00:04 IST 1970
Thu Jan 01 00:00:03 IST 1970
Thu Jan 01 00:00:03 IST 1970
Thu Jan 01 00:00:00 IST 1970
Thu Jan 01 00:00:00 IST 1970
Thu Jan 01 00:00:00 IST 1970
Thu Jan 01 00:00:00 IST 1970
Thu Jan 01 00:00:01 IST 1970
Thu Jan 01 00:00:00 IST 1970
Thu Jan 01 00:00:00 IST 1970

太多了......请帮忙。



[/ edit]

And that too many .... Please help.

[/edit]

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