将CSVwriter转换为输入流

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import com.opencsv.CSVWriter;

public class CSVWriterToInputStreamExample {
    public static void main(String[] args) {
        try {
            // 创建一个ByteArrayOutputStream对象
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            
            // 创建CSVWriter对象，并将输出流传入构造函数
            Writer writer = new OutputStreamWriter(outputStream);
            CSVWriter csvWriter = new CSVWriter(writer);
            
            // 写入CSV数据
            String[] record1 = {"John", "Doe", "john.doe@example.com"};
            String[] record2 = {"Jane", "Smith", "jane.smith@example.com"};
            csvWriter.writeNext(record1);
            csvWriter.writeNext(record2);
            
            // 刷新并关闭CSVWriter
            csvWriter.flush();
            csvWriter.close();
            
            // 获取字节数组
            byte[] byteArray = outputStream.toByteArray();
            
            // 创建一个ByteArrayInputStream对象，将字节数组作为参数传入
            InputStream inputStream = new ByteArrayInputStream(byteArray);
            
            // 现在你可以使用inputStream作为输入流进行后续处理
            // 例如，将其传递给其他方法进行数据解析、存储或传输
            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}