java按照编码读写文件

package d20130406;

import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.math.BigInteger;

public class GenerateTxtContent {

  public static void main(String[] args) {
    /**
     * file content index maxValue is 9999999
     * 
     * max generation records: 9999999 - 2440200 = 7559799
     * 
     * 200-699, 700-1199, 1200-1699, ... (max counter 50 is correct, more than 50 is wrong)
     */
    int fileCount = 500;
    String readFilePath = "C:/bill/TxtDocument/网站导入8.txt";//C:/bill/TxtDocument/temp.txt
    String writeFilePath = "C:/bill/TxtDocument/网站导入";//C:/bill/TxtDocument/网站导入200.txt
    /*Integer endIndex = 2440200;
    Integer fileNameIndex = 200;*/
    /*Integer endIndex = 2590200;
    Integer fileNameIndex = 700;*/
    /*Integer endIndex = 2740200;
    Integer fileNameIndex = 1200;*/
    /*Integer endIndex = 2890200;
    Integer fileNameIndex = 1700;*/
    /*Integer endIndex = 3040200;
    Integer fileNameIndex = 2200;*/
    /*Integer endIndex = 3190200;
    Integer fileNameIndex = 2700;*/
    /*Integer endIndex = 3340200;
    Integer fileNameIndex = 3200;*/
    /*Integer endIndex = 3790200;
    Integer fileNameIndex = 4700;*/
    /*Integer endIndex = 3940200;
    Integer fileNameIndex = 5200;*/
    Integer endIndex = 4090200;
    Integer fileNameIndex = 5700;
    
    Integer tempReturnStartIndex = endIndex; 
    for (int i = 0; i < fileCount; i++) {
      generationOneTxtFile(fileNameIndex + i, tempReturnStartIndex, readFilePath, writeFilePath);
      
      tempReturnStartIndex = tempReturnStartIndex + 300;
    }
  }

  private static void generationOneTxtFile(Integer fileNameIndex, Integer endIndex, 
      String readFilePath, String writeFilePath) {
    BufferedReader br = null;
    //FileWriter fileWriter = null;
    PrintWriter pw = null;
    try {

      File tempFile = new File(writeFilePath + fileNameIndex
          + ".txt");
      //fileWriter = new FileWriter(tempFile);
      pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(tempFile),"GBK")));

      /*Integer currentEndIndex = 0;
      for (int i = 0; i < 300; i++) {
        currentEndIndex = endIndex + i;

        StringBuffer tempLine = new StringBuffer();
        tempLine = tempLine.append(startStr).append(currentEndIndex)
            .append(endStr);
        fileWriter.write(tempLine.toString() + "\n");
      }*/
      
      
      File readFile = new File(readFilePath);
      br = new BufferedReader(new FileReader(readFile));
      //br = new BufferedReader(new InputStreamReader(new FileInputStream(readFile),"UTF-8"));
      String tempReadLine = null;
      while ((tempReadLine = br.readLine()) != null
          && tempReadLine.length() > 15) {
        tempReadLine = "00000000" + endIndex++ + tempReadLine.substring(15);
        //fileWriter.write(tempReadLine + "\n");
        pw.write(tempReadLine+"\n");
      }
      
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      if (br != null) {
        try {
          br.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
      
      /*if (fileWriter != null) {
        try {
          fileWriter.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }*/
      
      if (pw != null) {
        pw.close();
      }
    }
  }

}