字符串转码 将文本转为PDF

 @Test
    public void testBasic64Code() throws Exception {
        String strdata = new String("how are you".getBytes("UTF-8"));
          BASE64Decoder decoder = new BASE64Decoder();
          byte[] decodedBytes;
          decodedBytes = decoder.decodeBuffer(strdata);
          System.out.println(decodedBytes);

    }

1.转PDF test

public class Base64ConvertPDFTest {

  public static void main(String[] args) {
    // TODO Auto-generated method stub

    try {
      String encodedBytes =  readFile("/home/wrightdeng/Desktop/test.txt", StandardCharsets.UTF_8);

      BASE64Decoder decoder = new BASE64Decoder();
      byte[] decodedBytes;
      decodedBytes = decoder.decodeBuffer(encodedBytes);

    File file = new File("/home/wrightdeng/Desktop/newfile.pdf");;
    FileOutputStream fop = new FileOutputStream(file);

    fop.write(decodedBytes);
    fop.flush();
    fop.close();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }

    static String readFile(String path, Charset encoding) throws IOException
      {
        byte[] encoded = Files.readAllBytes(Paths.get(path));
        return new String(encoded, encoding);
      }

}

工具类:

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public class Base64ConverterUtils {

    private static final Logger LOGGER = LoggerFactory.getLogger(Base64ConverterUtils.class);

    public static void Base64Converter(String encodedBytes, String tempPath) {
        // BASE64Decoder decoder = new BASE64Decoder();

        LOGGER.info("The file temp saved in :"+tempPath);
        byte[] decodedBytes;
        try {
            decodedBytes = Base64.getDecoder().decode(encodedBytes); // decoder.decodeBuffer(encodedBytes);
            File file = new File(tempPath);
            FileOutputStream fop = new FileOutputStream(file);
            fop.write(decodedBytes);
            fop.flush();
            fop.close();
        } catch (IOException e) {
            LOGGER.error("write file to server occurred exception,the reason: "+e.getMessage());
            e.printStackTrace();
        }
    }
}