读取包含xml内容的CSV文件，并尝试只写入我需要的内容。我正在使用StringTokenizer

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.StringTokenizer;

public class CSVReaderWriter {
    public static void main(String[] args) {
        String csvFile = "input.csv";
        String outputFile = "output.csv";
        String desiredContent = "desired";

        try (BufferedReader br = new BufferedReader(new FileReader(csvFile));
             FileWriter writer = new FileWriter(outputFile)) {

            String line;
            while ((line = br.readLine()) != null) {
                StringTokenizer tokenizer = new StringTokenizer(line, ",");
                StringBuilder outputLine = new StringBuilder();

                while (tokenizer.hasMoreTokens()) {
                    String token = tokenizer.nextToken();

                    // Check if the token contains desired content
                    if (token.contains(desiredContent)) {
                        // Write the token to the output line
                        outputLine.append(token).append(",");
                    }
                }

                // Remove the trailing comma and write the output line to the file
                if (outputLine.length() > 0) {
                    outputLine.deleteCharAt(outputLine.length() - 1);
                    writer.write(outputLine.toString() + "\n");
                }
            }

            System.out.println("Successfully written the desired content to the output file.");

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}