标签：bom byte order mark unicode
BOM（Byte Order Mark），字节顺序标记，出现在文本文件头部，Unicode编码标准中用于标识文件是采用哪种格式的编码，但它对于文件的读者来说是不可见字符。
| 编码 | BOM (十六进制) | BOM (十进制) | CP1252 字符 |
|---|---|---|---|
| UTF-8[t 1] | EF BB BF | 239 187 191 | ??? |
| UTF-16 (BE) | FE FF | 254 255 | t? |
| UTF-16 (LE) | FF FE | 255 254 | ?t |
| UTF-32 (BE) | 00 00 FE FF | 0 0 254 255 | ??t? (? refers to the ASCII null character) |
| UTF-32 (LE) | FF FE 00 00 | 255 254 0 0 | ?t?? (? refers to the ASCII null character) |
| UTF-7[t 1] | 2B 2F 76 382B 2F 76 392B 2F 76 2B2B 2F 76 2F[t 2]2B 2F 76 38 2D[t 3] | 43 47 118 5643 47 118 5743 47 118 4343 47 118 4743 47 118 56 45 | +/v8+/v9+/v++/v/+/v8- |
| UTF-1[t 1] | F7 64 4C | 247 100 76 | ÷dL |
| UTF-EBCDIC[t 1] | DD 73 66 73 | 221 115 102 115 | Ysfs |
| SCSU[t 1] | 0E FE FF[t 4] | 14 254 255 | ?t? (? represents the ASCII “shift out” character) |
| BOCU-1[t 1] | FB EE 28 | 251 238 40 | ??( |
| GB-18030[t 1] | 84 31 95 33 | 132 49 149 51 | ?1?3 |
标签：bom byte order mark unicode
原文地址：http://blog.csdn.net/testcs_dn/article/details/45873699
