用Java解析日志文件

Question

所有,

我有一个包含以下内容的日志文件.

Request from Centercord.
2010-12-14 12:42:13.724 [ 6796] ****************************
2010-12-14 12:42:13.724 [ 6796] 1111111111111111
2010-12-14 12:42:13.724 [ 6796]22222222222

Response from Centercord.
2010-12-14 12:42:21.802 [ 5960] 11111111111111
2010-12-14 12:42:21.802 [ 5960]  ffffffffffffffffffffffffffff
2010-12-14 12:42:21.802 [ 5960]  tttttttttttttttttttttttttttt

Request from Centercord.
2010-12-14 12:42:13.724 [ 6796] ****************************

我需要创建两个日志文件,一个用于存储所有请求详细信息,另一个用于存储所有响应详细信息.我该如何解析这个并准备两个日志文件？

我需要以下答案.

Log 1:

Request from Centercord.
2010-12-14 12:42:13.724 [ 6796] ****************************
2010-12-14 12:42:13.724 [ 6796] 1111111111111111
2010-12-14 12:42:13.724 [ 6796]22222222222

2010-12-14 12:42:13.724 [ 6796] ****************************

Log 2:

Response from Centercord.
2010-12-14 12:42:21.802 [ 5960] 11111111111111
2010-12-14 12:42:21.802 [ 5960]  ffffffffffffffffffffffffffff
2010-12-14 12:42:21.802 [ 5960]  tttttttttttttttttttttttttttt

此致,Kanagaraj

Answer 1

我将如何做到这一点:

import java.io.*;
import java.util.Scanner;

public class Test {

    public static void main(String[] args) {

        try {

            PrintWriter requests = new PrintWriter("requests.txt");
            PrintWriter responses = new PrintWriter("responses.txt");
            PrintWriter currentLog = null;

            Scanner s = new Scanner(new File("log.txt"));
            while (s.hasNextLine()) {
                String line = s.nextLine();
                if (line.startsWith("Request from"))
                    currentLog = requests;
                else if (line.startsWith("Response from"))
                    currentLog = responses;
                else if (currentLog != null)
                    currentLog.println(line);
            }

            requests.close();
            responses.close();
            s.close();
        } catch (IOException ioex) {
            // handle exception...
        }
    }
}

给出log.txt

Request from Centercord.
2010-12-14 12:42:13.724 [ 6796] ****************************
2010-12-14 12:42:13.724 [ 6796] 1111111111111111
2010-12-14 12:42:13.724 [ 6796]22222222222

Response from Centercord.
2010-12-14 12:42:21.802 [ 5960] 11111111111111
2010-12-14 12:42:21.802 [ 5960]  ffffffffffffffffffffffffffff
2010-12-14 12:42:21.802 [ 5960]  tttttttttttttttttttttttttttt

Request from Centercord.
2010-12-14 12:42:13.724 [ 6796] ****************************

它生成,请求.txt

2010-12-14 12:42:13.724 [ 6796] ****************************
2010-12-14 12:42:13.724 [ 6796] 1111111111111111
2010-12-14 12:42:13.724 [ 6796]22222222222

2010-12-14 12:42:13.724 [ 6796] ****************************

...和responses.txt

2010-12-14 12:42:21.802 [ 5960] 11111111111111
2010-12-14 12:42:21.802 [ 5960]  ffffffffffffffffffffffffffff
2010-12-14 12:42:21.802 [ 5960]  tttttttttttttttttttttttttttt