0x和\u区别，unicode编码

\u则代表unicode编码，是一个字符；

0x开头代表十六进制，实际上就是一个整数；

\x对应的是UTF-8编码的数据，通过转化规则可以转换为Unicode编码，就能得到对应的汉字，转换规则很简单，先将\x去掉，转换为数字;

Unicode Chart：

https://www.ssec./~tomw/java/unicode.html

Range	Decimal	Name
0x0000-0x007F	0-127	Basic Latin
0x0080-0x00FF	128-255	Latin-1 Supplement
0x0100-0x017F	256-383	Latin Extended-A
0x0180-0x024F	384-591	Latin Extended-B
0x0250-0x02AF	592-687	IPA Extensions
0x02B0-0x02FF	688-767	Spacing Modifier Letters
0x0300-0x036F	768-879	Combining Diacritical Marks
0x0370-0x03FF	880-1023	Greek
0x0400-0x04FF	1024-1279	Cyrillic
0x0530-0x058F	1328-1423	Armenian
0x0590-0x05FF	1424-1535	Hebrew
0x0600-0x06FF	1536-1791	Arabic
0x0700-0x074F	1792-1871	Syriac
0x0780-0x07BF	1920-1983	Thaana
0x0900-0x097F	2304-2431	Devanagari
0x0980-0x09FF	2432-2559	Bengali
0x0A00-0x0A7F	2560-2687	Gurmukhi
0x0A80-0x0AFF	2688-2815	Gujarati
0x0B00-0x0B7F	2816-2943	Oriya
0x0B80-0x0BFF	2944-3071	Tamil
0x0C00-0x0C7F	3072-3199	Telugu
0x0C80-0x0CFF	3200-3327	Kannada
0x0D00-0x0D7F	3328-3455	Malayalam
0x0D80-0x0DFF	3456-3583	Sinhala
0x0E00-0x0E7F	3584-3711	Thai
0x0E80-0x0EFF	3712-3839	Lao
0x0F00-0x0FFF	3840-4095	Tibetan
0x1000-0x109F	4096-4255	Myanmar
0x10A0-0x10FF	4256-4351	Georgian
0x1100-0x11FF	4352-4607	Hangul Jamo
0x1200-0x137F	4608-4991	Ethiopic
0x13A0-0x13FF	5024-5119	Cherokee
0x1400-0x167F	5120-5759	Unified Canadian Aboriginal Syllabics
0x1680-0x169F	5760-5791	Ogham
0x16A0-0x16FF	5792-5887	Runic
0x1780-0x17FF	6016-6143	Khmer
0x1800-0x18AF	6144-6319	Mongolian
0x1E00-0x1EFF	7680-7935	Latin Extended Additional
0x1F00-0x1FFF	7936-8191	Greek Extended
0x2000-0x206F	8192-8303	General Punctuation
0x2070-0x209F	8304-8351	Superscripts and Subscripts
0x20A0-0x20CF	8352-8399	Currency Symbols
0x20D0-0x20FF	8400-8447	Combining Marks for Symbols
0x2100-0x214F	8448-8527	Letterlike Symbols
0x2150-0x218F	8528-8591	Number Forms
0x2190-0x21FF	8592-8703	Arrows
0x2200-0x22FF	8704-8959	Mathematical Operators
0x2300-0x23FF	8960-9215	Miscellaneous Technical
0x2400-0x243F	9216-9279	Control Pictures
0x2440-0x245F	9280-9311	Optical Character Recognition
0x2460-0x24FF	9312-9471	Enclosed Alphanumerics
0x2500-0x257F	9472-9599	Box Drawing
0x2580-0x259F	9600-9631	Block Elements
0x25A0-0x25FF	9632-9727	Geometric Shapes
0x2600-0x26FF	9728-9983	Miscellaneous Symbols
0x2700-0x27BF	9984-10175	Dingbats
0x2800-0x28FF	10240-10495	Braille Patterns
0x2E80-0x2EFF	11904-12031	CJK Radicals Supplement
0x2F00-0x2FDF	12032-12255	Kangxi Radicals
0x2FF0-0x2FFF	12272-12287	Ideographic Description Characters
0x3000-0x303F	12288-12351	CJK Symbols and Punctuation
0x3040-0x309F	12352-12447	Hiragana
0x30A0-0x30FF	12448-12543	Katakana
0x3100-0x312F	12544-12591	Bopomofo
0x3130-0x318F	12592-12687	Hangul Compatibility Jamo
0x3190-0x319F	12688-12703	Kanbun
0x31A0-0x31BF	12704-12735	Bopomofo Extended
0x3200-0x32FF	12800-13055	Enclosed CJK Letters and Months
0x3300-0x33FF	13056-13311	CJK Compatibility
0x3400-0x4DB5	13312-19893	CJK Unified Ideographs Extension A
0x4E00-0x9FFF	19968-40959	CJK Unified Ideographs
0xA000-0xA48F	40960-42127	Yi Syllables
0xA490-0xA4CF	42128-42191	Yi Radicals
0xAC00-0xD7A3	44032-55203	Hangul Syllables
0xD800-0xDB7F	55296-56191	High Surrogates
0xDB80-0xDBFF	56192-56319	High Private Use Surrogates
0xDC00-0xDFFF	56320-57343	Low Surrogates
0xE000-0xF8FF	57344-63743	Private Use
0xF900-0xFAFF	63744-64255	CJK Compatibility Ideographs
0xFB00-0xFB4F	64256-64335	Alphabetic Presentation Forms
0xFB50-0xFDFF	64336-65023	Arabic Presentation Forms-A
0xFE20-0xFE2F	65056-65071	Combining Half Marks
0xFE30-0xFE4F	65072-65103	CJK Compatibility Forms
0xFE50-0xFE6F	65104-65135	Small Form Variants
0xFE70-0xFEFE	65136-65278	Arabic Presentation Forms-B
0xFEFF-0xFEFF	65279-65279	Specials
0xFF00-0xFFEF	65280-65519	Halfwidth and Fullwidth Forms
0xFFF0-0xFFFD	65520-65533	Specials
		Notes