java file转base64

2018/07/23 19:49
阅读数 8
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class FileToBase64 {
    /**
    * <p>将文件转成base64 字符串</p>
    */
    public static String encodeBase64File(String path) throws Exception {
        File file = new File(path);
        FileInputStream inputFile = new FileInputStream(file);
        byte[] buffer = new byte[(int)file.length()];
        inputFile.read(buffer);
        inputFile.close();
        return new BASE64Encoder().encode(buffer);
    }
    /**
    * <p>将base64字符解码保存文件</p>
    */
    public static void decoderBase64File(String base64Code,String targetPath) throws Exception {
        byte[] buffer = new BASE64Decoder().decodeBuffer(base64Code);
        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(buffer);
        out.close();
    }
    /**
    * <p>将base64字符保存文本文件</p>
    */
    public static void toFile(String base64Code,String targetPath) throws Exception {
        byte[] buffer = base64Code.getBytes();
        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(buffer);
        out.close();
    }
    public static void main(String[] args) {
        try {
            String base64Code =encodeBase64File("/Users/Crazy/Pictures/zyb2.jpg");
            System.out.println(base64Code);
            decoderBase64File(base64Code, "/Users/Crazy/Desktop/zyb.png");
            toFile(base64Code, "/Users/Crazy/Desktop/zyb.txt");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

  

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