Java 读取.txt文件并转换为.csv文件
无法将数据从.txt文件转换为.csv文件。一切都运行得非常干净,但当它转换为.csv文件时,它只显示.txt文件中的部分数据。txt文件是input.txt 以下是我所拥有的:Java 读取.txt文件并转换为.csv文件,java,csv,filewriter,printwriter,Java,Csv,Filewriter,Printwriter,无法将数据从.txt文件转换为.csv文件。一切都运行得非常干净,但当它转换为.csv文件时,它只显示.txt文件中的部分数据。txt文件是input.txt 以下是我所拥有的: import java.util.Scanner; import java.io.*; import com.csvreader.CsvWriter; public class InputOutputExample { public static void main(String[] args) throws IO
import java.util.Scanner;
import java.io.*;
import com.csvreader.CsvWriter;
public class InputOutputExample
{
public static void main(String[] args) throws IOException
{
Scanner keyboard = new Scanner(System.in);
System.out.println("Enter the name and file type: ");
String filename = keyboard.nextLine();
File file = new File(filename);
Scanner inputFile = new Scanner(file);
while (inputFile.hasNext()) {
String studentInfo = inputFile.nextLine();
System.out.println(studentInfo);
CsvWriter outputFile = new CsvWriter("C:\\Users\\John\\Desktop\\output.csv");
outputFile.write(studentInfo);
outputFile.close();
}
inputFile.close();
}
}
Java程序中的输出:
Enter the name and file type:
input.txt [Enter]
Student_Id, student_name, gender, grade
993541, Ricky, male, A
037832, Joanne, female, A
034442, Amanda, female, B
054335, Logan, male, B
042343, Paul, male, B
Process finished with exit code 0
当转换为.csv时,它仅在单元格中显示
42343,Paul,male,B
您应该删除csv文件,创建外出循环:
CsvWriter outputFile = new CsvWriter("C:\\Users\\John\\Desktop\\output.csv");
while (inputFile.hasNext()) {
String studentInfo = inputFile.nextLine();
System.out.println(studentInfo);
outputFile.write(studentInfo);
outputFile.newLine();
}
outputFile.close();
您应该提取
CsvWriter outputFile=new CsvWriter(“C:\\Users\\John\\Desktop\\output.csv”)代码>来自while循环和outputFile.close()代码>也是。
代码应如下所示:
`CsvWriter outputFile=新的CsvWriter(“C:\Users\John\Desktop\output.csv”);
while(inputFile.hasNext()){
字符串studentInfo=inputFile.nextLine()
outputFile.close()`
尝试使用上述代码替换在每次while循环迭代中,您可能会重复使用新的csv文件
System.out.println(studentInfo);
outputFile.write(studentInfo);
}