将文件转成base64 字符串

public class FileCode {

 

    /**

     * <p>将文件转成base64 字符串</p>

     * @param path 文件路径

     */

    publicstatic 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();

        returnnew BASE64Encoder().encode(buffer);

    }

    /**

     * <p>将base64字符解码保存文件</p>

     */

    publicstatic void decoderBase64File(String base64Code,String targetPath) throwsException {

        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>

     */

    publicstatic void toFile(String base64Code,String targetPath) throwsException {

        byte[] buffer = base64Code.getBytes();

        FileOutputStream out =new FileOutputStream(targetPath);

        out.write(buffer);

        out.close();

    }

    publicstatic void main(String[] args) {

        try{

            String base64Code =encodeBase64File("D:\\1.jpg");

            System.out.println(base64Code);

            decoderBase64File(base64Code,"D:\\2.jpg");

            toFile(base64Code,"D:\\three.txt");           

        }catch (Exception e) {

            e.printStackTrace();

        }

    }

 

}