我有一个很大的网络日志文件。用户由不同的数字表示。每行以数字开头。
我必须拆分文本文件,以便相同的用户进入一个文件。
我的输入文本文件如下所示:
6993 xylazine 2006-03-01 19:09:30 3
6993 xylazine 2006-03-01 19:09:30 9
6993 irs
6993
6997 veterinarian horses 2006-03-05 10:39:16
6997 socil security admin. 2006-03-06 18:57:30
6997 social security administration 2006-03-06 18:58:35
6997 bank of america branches 2006-03-07 20:08:03
6997 phonebokk 2006-03-07 20:12:15
6997 phone book 2006-03-07 20:12:19
我用 FileReader 和 BufferedReader 编写了以下代码,但这些 api 似乎没有提供我需要的功能。但它会生成许多文件。但是此代码将每一行拆分为单独的文件。但我想将它拆分为相同的用户(相同的数字(以)开头)到一个文件中。谁能告诉我如何修复下面的代码以实现我想要的?
package fileread;
import java.io.*;
import java.io.BufferedReader;
import java.io.PrintWriter;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
public class FileRead {
public static void main( String[] args ) {
File f = new File( "D:test.txt" );
BufferedReader fileReader = null;
FileOutputStream fout = null;
BufferedWriter out = null;
try {
String text = " ", text1 = "content";
int x = 2;
fileReader = new BufferedReader( new InputStreamReader(
new FileInputStream( f ) ) );
fout = new FileOutputStream( new File( "test1.txt" ) );
OutputStreamWriter osr = new OutputStreamWriter( fout, "UTF-8" );// No
// I18N
PrintWriter pwr = new PrintWriter( osr, false );
out = new BufferedWriter( new OutputStreamWriter( fout ) );
while( (text = fileReader.readLine()) != null ) {
text = text.trim();
int inde = text.indexOf( " " );
System.out.println( inde );
if( inde > 0 ) {
String text2 = text1;
text1 = text.substring( 0, inde );
text1 = text1.trim();
text2 = text2.trim();
// System.out.println(text1);
if( text1.equals( text2 ) || text2.equals( "content" ) ) {
pwr.print( text );
pwr.print( "\n" );
} else {
osr.flush();
osr.close();
fout = new FileOutputStream( new File( "D:test" + x
+ ".txt" ) );
osr = new OutputStreamWriter( fout, "UTF-8" );// No I18N
pwr = new PrintWriter( osr, false );
pwr.print( text );
pwr.print( "\n" );
x++;
}
}
}
osr.flush();
osr.close();
} catch( Exception e ) {
e.printStackTrace();
} finally
{
try {
if( fileReader != null ) {
fileReader.close();
}
if( fout != null ) {
fout.close();
}
if( out != null ) {
out.close();
}
} catch( Exception e ) {
}
}
}
}
但是此代码将每一行拆分为单独的文件。但我想将它拆分为相同的用户(相同的数字(以)开头)到一个文件中。谁能给个思路???我是java新手。请给点建议。提前致谢。