陕西省建设总工会网站,百度搜索营销,软件系统开发公司,免费1级做看网站基于plirke示例代码和他的帮助,我编写了一个最终的工作代码。在这里分享它,这样它可能对有类似需求的人有用。import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileReader;import java.io.FileWriter;import java.io.IOExcep…基于plirke示例代码和他的帮助,我编写了一个最终的工作代码。在这里分享它,这样它可能对有类似需求的人有用。import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.util.Random;public class Demo1 {public static String getRandomNumber() {String CHARS 1234567890;StringBuilder random new StringBuilder();Random rnd new Random();while (random.length() 18) // length of the random string.{int index (int) (rnd.nextFloat() * CHARS.length());random.append(CHARS.charAt(index));}String finaldata random.toString();return finaldata;}public static void main(String[] args) throws IOException {File sourceCsvFile null;File finalCsvFile null;// String sourceCsvFileName ;sourceCsvFile new File(C:\\MyData\\Input.csv);finalCsvFile new File(C:\\MyData\\Input_1.csv);String line ;String cvsSplitBy ,;BufferedWriter writer new BufferedWriter(new FileWriter(finalCsvFile));try (BufferedReader br new BufferedReader(new FileReader(sourceCsvFile))) // read the actual Source downloaded csv file{line br.readLine(); // read only first lineString newFileLine line cvsSplitBy HashValue; // append , and new column writer.write(newFileLine); // will be written as first line in new csvwriter.newLine(); // go to next line for writing next lineswhile ((line br.readLine()) ! null) // this loop to write data for all lines except headers{newFileLine line cvsSplitBy getRandomNumber(); // will add random numbers for each rowwriter.write(newFileLine);writer.newLine();}}writer.close();if(finalCsvFile.exists() finalCsvFile.length() 0){System.out.println(New File with HashValue column created...);if(sourceCsvFile.delete()){System.out.println(Old File deleted successfully...);}else{System.out.println(Failed to delete the Old file...);}}else if (!finalCsvFile.exists()){System.out.println(New File with HashValue column not created...);}}}
