src/main/java/me/codeboy/common/base/io/util/CBFileUtil.java
public static byte[] getFileByteContent(InputStream is, String encoding) throws IOException{
        byte[] buffer = new byte[1024];
        int len;
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        while((len = is.read(buffer)) != -1){
            outputStream.write(buffer, 0, len);
        }
        outputStream.close();
        is.close();
        return outputStream.toByteArray();
    }
public static byte[] getFileByteContent(InputStream is, String encoding) throws IOException{
        byte[] buffer = new byte[1024];
        int len;
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        while((len = is.read(buffer)) != -1){
            outputStream.write(buffer, 0, len);
        }
        outputStream.close();
        is.close();
        return outputStream.toByteArray();
    }
按照指定编码获取输入流字节内容
@param is 输入流
@param encoding 编码
@return 字节数组
@throws IOException io exception