Java将bytes []转换为File

Question

我有一个字节数组

bytes[] doc

如何new File从该字节创建实例？

Answer 1

 try (FileOutputStream fileOuputStream = new FileOutputStream("filename")){
    fileOuputStream.write(byteArray);
 }

Answer 2

试试这个

Files.write(Paths.get("filename"), bytes);

Answer 3

一个将 byte[] 写入文件的简单程序。

import java.io.File;
import java.io.FileOutputStream;

public class BytesToFile {

    public static void main(String[] args) {

        byte[] demBytes = null; // Instead of null, specify your bytes here.

        File outputFile = new File("LOCATION TO FILE");

        try ( FileOutputStream outputStream = new FileOutputStream(outputFile); ) {

            outputStream.write(demBytes);  // Write the bytes and you're done.

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

}

注意：try-catch 语句需要 Java 版本 >= 1.7。请记住将字节从 null 更改为对应于您的字节数组。