0000027788|001400000000000000000001224627|G1|||G1
0000027789|001400000000000000000001224627|D1|||G1
0000027790|001400000000000000000001224627|D1|||G1
0000027790|001400000000000000000001224627|D1|||G1
0000027791|001400000000000000000001224627|G2|||G2
0000027792|001400000000000000000001224627|D2|||G2
0000027793|001400000000000000000001224627|D2|||G2
0000027794|001400000000000000000001224627|G6|||G6

我需要特别是从文件中的第3列,并找到哪个是G1组的最后一个D1,同样也是特定G2的D2.找到最后一个值后,我需要在相应的行中添加一些内容,如“LL”：

我已经尝试过,但是这条线并没有平行地附加到每个D1上,而不仅仅是最后一个D1.

这是我的代码：

package com.scb.firstreport;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;
public class EDWBatchProcessor {

//static Logger log = Logger.getLogger(EDWBatchProcessor.class.getName());

public static void main(String[] args) throws JRException,NoSuchFieldException,SecurityException,IllegalArgumentException,IllegalAccessException {
    //log.debug("Hello this is a debug message");
    File fileDir = new File("D:\\EDWFileProcessing\\simple.txt");
    String line = null;
    String[] split = null;
    try {
        // FileReader reads text files in the default encoding.
        BufferedReader in = new BufferedReader(
                   new InputStreamReader(
                              new FileInputStream(fileDir),"UTF-8"));

          BufferedWriter bufferedWriter = null;
        while((line = in.readLine()) != null) {
            //System.out.println(line);
            split = line.split("\\|");

            List<String> customerList = new ArrayList<String>();

            if(!customerList.contains(split[1])){
                customerList.add(split[1]);
                bufferedWriter =
                        new BufferedWriter(new OutputStreamWriter(
                                new FileOutputStream("D:\\EDWFileProcessing\\output\\"+split[1]+".txt",true),"UTF-8"));

                bufferedWriter.write(line);
                bufferedWriter.newLine();
                bufferedWriter.close();

            }
            else{

                 bufferedWriter.write(line);
                 bufferedWriter.close();
            }

        }   
        final File folder = new File("D:\\EDWFileProcessing\\output");
       listFilesForFolder(folder);
        // Always close files.
        in.close();  

    }
    catch(FileNotFoundException ex) {
        System.out.println(
            "Unable to open file '");                
    }
    catch(IOException ex) {
        System.out.println(
            "Error reading file '" 
          );                  
        // Or we could just do this: 
        // ex.printStackTrace();
    }

   }

private static void listFilesForFolder(File folder) throws NoSuchFieldException,IllegalAccessException,JRException,IOException {
    for (final File fileEntry : folder.listFiles()) {
        if (fileEntry.isDirectory()) {
            //listFilesForFolder(fileEntry);
        } else {
           // System.out.println(fileEntry.getName().substring(0,30));
            //System.out.println(fileEntry.getAbsolutePath());

            File fileDir = new File(fileEntry.getAbsolutePath());
            String line = null;
            String lineNew = "000000000000000000000000000000000";
            String[] split = null;
            // FileReader reads text files in the default encoding.
            BufferedReader in = new BufferedReader(
                       new InputStreamReader(
                                  new FileInputStream(fileDir),"UTF-8"));

              BufferedWriter bufferedWriter = null;
              List<String> customerList = new ArrayList<String>();

                List<String> recTypeList = new ArrayList<String>();

            while((line = in.readLine()) != null) {
               // System.out.println(line);
                split = line.split("\\|");
                bufferedWriter =
                            new BufferedWriter(new OutputStreamWriter(
                                    new FileOutputStream("D:\\EDWFileProcessing\\output\\simple\\"+split[1]+".txt","UTF-8"));

                    System.out.println("Split2222222222========>>"+split[2]);
                    System.out.println("Split2222222222========>>"+recTypeList.contains(split[2]));

                    if(!recTypeList.contains(split[2])){
                    recTypeList.add(split[2]);
                    bufferedWriter.newLine();

                    bufferedWriter.write(line);

                    }else{
                        bufferedWriter.newLine();
                        line = line.concat("|LL");
                        bufferedWriter.write(line);
                        System.out.println("line new.....................");
                        //bufferedWriter.newLine();
                        //bufferedWriter.write(lineNew);
                        // bufferedWriter.newLine();
                    }


                    //bufferedWriter.newLine();
                    bufferedWriter.close();
          }   


            in.close();  

        }
   }
}

}

我尝试使用列表,但“LL”被附加到G2的末尾.

for (ListIterator<String> it = recTypeList.listIterator(); it.hasNext(); i++) {

         String s1 = it.next();
          if(s1.equals("G2"))
                {

                    int ind=it.prevIoUsIndex()-1;
                    String val=recTypeList.get(ind);
                    String lastop=val.concat("LL");
                   bufferedWriter.write(lastop);
                   System.out.println(lastop);
                   System.out.println(val);
                 }