EBCDIC編碼轉換爲ASCII編碼 頂 原 薦

先上代碼，很簡單，僅涉及一些字符轉換，e2aTable存放的是對應字節的對照表，借用了網上找到的，覈對了下IBM官方提供一個轉碼錶，基本一致：

        /// <summary>
        /// Convert EBCDIC bytes to ASCII UTF-8 String
        /// Convert Table "https://www.ibm.com/support/knowledgecenter/en/SSZJPZ_11.3.0/com.ibm.swg.im.iis.ds.parjob.adref.doc/topics/r_deeadvrf_EBCDIC_to_ASCII.html"
        /// </summary>
        /// <param name="data">bytes array</param>
        /// <param name="offset">offset</param>
        /// <param name="length">length</param>
        /// <returns></returns>
        public static string EbcdicToAscii(byte[] data, int offset, int length)
        {
            int[] e2aTable = new int[256]
             {
                 0, 1, 2, 3,156, 9,134,127,151,141,142, 11, 12, 13, 14, 15,
                16, 17, 18, 19,157,133, 8,135, 24, 25,146,143, 28, 29, 30, 31,
                128,129,130,131,132, 10, 23, 27,136,137,138,139,140, 5, 6, 7,
                144,145, 22,147,148,149,150, 4,152,153,154,155, 20, 21,158, 26,
                32,160,161,162,163,164,165,166,167,168, 91, 46, 60, 40, 43, 33,
                38,169,170,171,172,173,174,175,176,177, 93, 36, 42, 41, 59, 94,
                45, 47,178,179,180,181,182,183,184,185,124, 44, 37, 95, 62, 63,
                186,187,188,189,190,191,192,193,194, 96, 58, 35, 64, 39, 61, 34,
                195, 97, 98, 99,100,101,102,103,104,105,196,197,198,199,200,201,
                202,106,107,108,109,110,111,112,113,114,203,204,205,206,207,208,
                209,126,115,116,117,118,119,120,121,122,210,211,212,213,214,215,
                216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,
                123, 65, 66, 67, 68, 69, 70, 71, 72, 73,232,233,234,235,236,237,
                125, 74, 75, 76, 77, 78, 79, 80, 81, 82,238,239,240,241,242,243,
                92,159, 83, 84, 85, 86, 87, 88, 89, 90,244,245,246,247,248,249,
                48, 49, 50, 51, 52, 53, 54, 55, 56, 57,250,251,252,253,254,255
             };
            var stringBuilder = new StringBuilder();
            try
            {
                for (int i = offset; i < data.Length && i - offset < length; i++)
                {
                    //0x00 Means blank, packet do have lots blank,ignore it
                    if (data[i] == 0x00)
                        continue;
                    stringBuilder.Append(Convert.ToChar(e2aTable[data[i]]));
                }
                return stringBuilder.ToString();
            }
            catch (Exception ex)
            {
                log.Error(ex.ToString());
                return null;
            }
            finally
            {
                stringBuilder = null;
            }
        }

很簡單的方法，無依賴。。。特意分享一下