BufferedReader直接转byte[]

使用BufferedReader将文本转换为byte[]的方法

java
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class BufferedReaderToByteArray {
    public static byte[] convertToByteArray(String filePath) throws IOException {
        List byteArrays = new ArrayList<>();
        try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
            String line;
            while ((line = reader.readLine()) != null) {
                // Convert each line to byte array and add to the list
                byteArrays.add(line.getBytes());
            }
        }
        // Combine all byte arrays into a single byte array
        int totalLength = byteArrays.stream().mapToInt(array -> array.length).sum();
        byte[] result = new byte[totalLength];
        int currentIndex = 0;
        for (byte[] array : byteArrays) {
            System.arraycopy(array, 0, result, currentIndex, array.length);
            currentIndex += array.length;
        }
        return result;
    }
    public static void main(String[] args) {
        try {
            String filePath = "path/to/your/text/file.txt";
            byte[] byteArray = convertToByteArray(filePath);
            // Now you can use the byteArray for further processing or transmission
            // ...
            System.out.println("Text file successfully converted to byte array.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}