html转义字符如何通过代码识别

1、html转义字符如何通过代码识别间或会在数据中看到诸如&39; 这样的字符，特征如下以&开始，中间是一串数字，以；结尾以&开始，中间一串字符，以；结尾比如最频繁的 或者等价的&160;扫瞄器碰到这些转义符，会转义回归，但如何通过代码识别？ mons.lang.stringescapeutils.unescapehtml提供了很好的解释碰到上面的第一种状况，中间是数字的，挺直将数字（unicode）转为char碰到其次状况，中间是字符，只能查映射表了,从映射表中找到字符对应的数字再转换为char 看看代码就

2、一目了然了看看html40如何定义的 复制代码代码如下:static html40 = new entities();fillwithhtml40entities(html40);static void fillwithhtml40entities(entities entities) entities.addentities(basic_array);entities.addentities(iso8859_1_array);entities.addentities(html40_array);再看看basic_array、iso8859_1_array、html40_array 分离是什么

3、basic_array复制代码代码如下:private static final string basic_array = "quot", "34", / " - double-quote"amp", "38", / & - ampersand"lt", "60", / - greater-than;iso8859_1_array复制代码代码如下:

4、static final string iso8859_1_array = "nbsp", "160", / non-breaking space"iexcl", "161", / inverted exclamation mark"cent", "162", / cent sign"pound", "163"

5、, / pound sign"curren", "164", / currency sign"yen", "165", / yen sign = yuan sign"brvbar", "166", / broken bar = broken vertical bar"sect", "167", / sectio

6、n sign"uml", "168", / diaeresis = spacing diaeresis"copy", "169", / - copyright sign"ordf", "170", / feminine ordinal indicator"laquo", "171", / left-pointi

7、ng double angle quotation mark = left pointing guillemet"not", "172", / not sign"shy", "173", / soft hyphen = discretionary hyphen"reg", "174", / - registered trademark sign"macr&

8、quot;, "175", / macron = spacing macron = overline = apl overbar"deg", "176", / degree sign"plusmn", "177", / plus-minus sign = plus-or-minus sign"sup2", "178", / superscript

9、 two = superscript digit two = squared"sup3", "179", / superscript three = superscript digit three = cubed"acute", "180", / acute accent = spacing acute"micro", "181", / micro sign"pa

10、ra", "182", / pilcrow sign = paragraph sign"middot", "183", / middle dot = georgian comma = greek middle dot"cedil", "184", / cedilla = spacing cedilla"sup1", "185",

11、 / superscript one = superscript digit one"ordm", "186", / masculine ordinal indicator"raquo", "187", / right-pointing double angle quotation mark = right pointing guillemet"frac14", "188", /

12、vulgar fraction one quarter = fraction one quarter"frac12", "189", / vulgar fraction one half = fraction one half"frac34", "190", / vulgar fraction three quarters = fraction three quarters"iquest", "19

13、1", / inverted question mark = turned question mark"agrave", "192", / - uppercase a, grave accent"aacute", "193", / - uppercase a, acute accent"acirc", "194", / - uppercase a, circumf

14、lex accent"atilde", "195", / - uppercase a, tilde"auml", "196", / - uppercase a, umlaut"aring", "197", / - uppercase a, ring"aelig", "198", / - uppercase ae

15、"ccedil", "199", / - uppercase c, cedilla"egrave", "200", / - uppercase e, grave accent"eacute", "201", / - uppercase e, acute accent"ecirc", "202", / - upp

16、ercase e, circumflex accent"euml", "203", / - uppercase e, umlaut"igrave", "204", / - uppercase i, grave accent"iacute", "205", / - uppercase i, acute accent"icirc", &quo

17、t;206", / - uppercase i, circumflex accent"iuml", "207", / - uppercase i, umlaut"eth", "208", / - uppercase eth, icelandic"ntilde", "209", / - uppercase n, tilde"ograve&q

18、uot;, "210", / - uppercase o, grave accent"oacute", "211", / - uppercase o, acute accent"ocirc", "212", / - uppercase o, circumflex accent"otilde", "213", / - uppercase o, ti

19、lde"ouml", "214", / - uppercase o, umlaut"times", "215", / multiplication sign"oslash", "216", / - uppercase o, slash"ugrave", "217", / - uppercase u, grave

20、 accent"uacute", "218", / - uppercase u, acute accent"ucirc", "219", / - uppercase u, circumflex accent"uuml", "220", / - uppercase u, umlaut"yacute", "221"

21、, / - uppercase y, acute accent"thorn", "222", / - uppercase thorn, icelandic"szlig", "223", / - lowercase sharps, german"agrave", "224", / - lowercase a, grave accent"aacute&quot

22、;, "225", / - lowercase a, acute accent"acirc", "226", / - lowercase a, circumflex accent"atilde", "227", / - lowercase a, tilde"auml", "228", / - lowercase a, umlaut&quo

23、t;aring", "229", / - lowercase a, ring"aelig", "230", / - lowercase ae"ccedil", "231", / - lowercase c, cedilla"egrave", "232", / - lowercase e, grave accent&quo

24、t;eacute", "233", / - lowercase e, acute accent"ecirc", "234", / - lowercase e, circumflex accent"euml", "235", / - lowercase e, umlaut"igrave", "236", / - lowercase

25、 i, grave accent"iacute", "237", / - lowercase i, acute accent"icirc", "238", / - lowercase i, circumflex accent"iuml", "239", / - lowercase i, umlaut"eth", "240&

26、;quot;, / - lowercase eth, icelandic"ntilde", "241", / - lowercase n, tilde"ograve", "242", / - lowercase o, grave accent"oacute", "243", / - lowercase o, acute accent"ocirc"

27、, "244", / - lowercase o, circumflex accent"otilde", "245", / - lowercase o, tilde"ouml", "246", / - lowercase o, umlaut"divide", "247", / division sign"oslash&q

28、uot;, "248", / - lowercase o, slash"ugrave", "249", / - lowercase u, grave accent"uacute", "250", / - lowercase u, acute accent"ucirc", "251", / - lowercase u, circumflex acc

29、ent"uuml", "252", / - lowercase u, umlaut"yacute", "253", / - lowercase y, acute accent"thorn", "254", / - lowercase thorn, icelandic"yuml", "255", / - lowe

30、rcase y, umlaut;html40_array复制代码代码如下:static final string html40_array = /"fnof", "402", / latin small f with hook = function= florin, u+0192 isotech ->/"alpha", "913", / greek capital letter alpha, u+0391 ->"beta&

31、amp;quot;, "914", / greek capital letter beta, u+0392 ->"gamma", "915", / greek capital letter gamma,u+0393 isogrk3 ->"delta", "916", / greek capital letter delta,u+0394 isogrk3 ->"epsilon&

32、;quot;, "917", / greek capital letter epsilon, u+0395 ->"zeta", "918", / greek capital letter zeta, u+0396 ->"eta", "919", / greek capital letter eta, u+0397 ->"theta", "920&

33、amp;quot;, / greek capital letter theta,u+0398 isogrk3 ->"iota", "921", / greek capital letter iota, u+0399 ->"kappa", "922", / greek capital letter kappa, u+039a ->"lambda", "923", /

34、 greek capital letter lambda,u+039b isogrk3 ->"mu", "924", / greek capital letter mu, u+039c ->"nu", "925", / greek capital letter nu, u+039d ->"xi", "926", / greek capital letter xi,

35、 u+039e isogrk3 ->"omicron", "927", / greek capital letter omicron, u+039f ->"pi", "928", / greek capital letter pi, u+03a0 isogrk3 ->"rho", "929", / greek capital letter rho, u+03a1

36、->/"sigma", "931", / greek capital letter sigma,u+03a3 isogrk3 ->"tau", "932", / greek capital letter tau, u+03a4 ->"upsilon", "933", / greek capital letter upsilon,u+03a5 isogrk3 -&g

37、t;"phi", "934", / greek capital letter phi,u+03a6 isogrk3 ->"chi", "935", / greek capital letter chi, u+03a7 ->"psi", "936", / greek capital letter psi,u+03a8 isogrk3 ->"omeg

38、a", "937", / greek capital letter omega,u+03a9 isogrk3 ->"alpha", "945", / greek small letter alpha,u+03b1 isogrk3 ->"beta", "946", / greek small letter beta, u+03b2 isogrk3 ->"gamma&

39、amp;quot;, "947", / greek small letter gamma,u+03b3 isogrk3 ->"delta", "948", / greek small letter delta,u+03b4 isogrk3 ->"epsilon", "949", / greek small letter epsilon,u+03b5 isogrk3 ->"zeta&

40、amp;quot;, "950", / greek small letter zeta, u+03b6 isogrk3 ->"eta", "951", / greek small letter eta, u+03b7 isogrk3 ->"theta", "952", / greek small letter theta,u+03b8 isogrk3 ->"iota&quo

41、t;, "953", / greek small letter iota, u+03b9 isogrk3 ->"kappa", "954", / greek small letter kappa,u+03ba isogrk3 ->"lambda", "955", / greek small letter lambda,u+03bb isogrk3 ->"mu",

42、"956", / greek small letter mu, u+03bc isogrk3 ->"nu", "957", / greek small letter nu, u+03bd isogrk3 ->"xi", "958", / greek small letter xi, u+03be isogrk3 ->"omicron", "959

43、", / greek small letter omicron, u+03bf new ->"pi", "960", / greek small letter pi, u+03c0 isogrk3 ->"rho", "961", / greek small letter rho, u+03c1 isogrk3 ->"sigmaf", "962",

44、 / greek small letter final sigma,u+03c2 isogrk3 ->"sigma", "963", / greek small letter sigma,u+03c3 isogrk3 ->"tau", "964", / greek small letter tau, u+03c4 isogrk3 ->"upsilon", "965&quot

45、;, / greek small letter upsilon,u+03c5 isogrk3 ->"phi", "966", / greek small letter phi, u+03c6 isogrk3 ->"chi", "967", / greek small letter chi, u+03c7 isogrk3 ->"psi", "968", / gree

46、k small letter psi, u+03c8 isogrk3 ->"omega", "969", / greek small letter omega,u+03c9 isogrk3 ->"thetasym", "977", / greek small letter theta symbol,u+03d1 new ->"upsih", "978", / gr

47、eek upsilon with hook symbol,u+03d2 new ->"piv", "982", / greek pi symbol, u+03d6 isogrk3 ->/"bull", "8226", / bullet = black small circle,u+2022 isopub ->/"hellip", "8230", / horizon

48、tal ellipsis = three dot leader,u+2026 isopub ->"prime", "8242", / prime = minutes = feet, u+2032 isotech ->"prime", "8243", / double prime = seconds = inches,u+2033 isotech ->"oline", "8254&a

49、mp;quot;, / overline = spacing overscore,u+203e new ->"frasl", "8260", / fraction slash, u+2044 new ->/"weierp", "8472", / script capital p = power set= weierstrass p, u+2118 isoamso ->"image", &qu

50、ot;8465", / blackletter capital i = imaginary part,u+2111 isoamso ->"real", "8476", / blackletter capital r = real part symbol,u+211c isoamso ->"trade", "8482", / trade mark sign, u+2122 isonum ->"alef

51、sym", "8501", / alef symbol = first transfinite cardinal,u+2135 new ->/"larr", "8592", / leftwards arrow, u+2190 isonum ->"uarr", "8593", / upwards arrow, u+2191 isonum->"rarr&quo

52、t;, "8594", / rightwards arrow, u+2192 isonum ->"darr", "8595", / downwards arrow, u+2193 isonum ->"harr", "8596", / left right arrow, u+2194 isoamsa ->"crarr", "8629&quo

53、t;, / downwards arrow with corner leftwards= carriage return, u+21b5 new ->"larr", "8656", / leftwards double arrow, u+21d0 isotech ->/"uarr", "8657", / upwards double arrow, u+21d1 isoamsa ->"rarr", &

54、amp;quot;8658", / rightwards double arrow,u+21d2 isotech ->/"darr", "8659", / downwards double arrow, u+21d3 isoamsa ->"harr", "8660", / left right double arrow,u+21d4 isoamsa ->/"forall", &am

55、p;quot;8704", / for all, u+2200 isotech ->"part", "8706", / partial differential, u+2202 isotech ->"exist", "8707", / there exists, u+2203 isotech ->"empty", "8709", / empty

56、set = null set = diameter,u+2205 isoamso ->"nabla", "8711", / nabla = backward difference,u+2207 isotech ->"isin", "8712", / element of, u+2208 isotech ->"notin", "8713", / not an ele

57、ment of, u+2209 isotech ->"ni", "8715", / contains as member, u+220b isotech ->/"prod", "8719", / n-ary product = product sign,u+220f isoamsb ->/"sum", "8721", / n-ary summation, u+22

58、11 isoamsb ->/"minus", "8722", / minus sign, u+2212 isotech ->"lowast", "8727", / asterisk operator, u+2217 isotech ->"radic", "8730", / square root = radical sign,u+221a isotech ->

59、;"prop", "8733", / proportional to, u+221d isotech ->"infin", "8734", / infinity, u+221e isotech ->"ang", "8736", / angle, u+2220 isoamso ->"and", "8743&

60、;quot;, / logical and = wedge, u+2227 isotech ->"or", "8744", / logical or = vee, u+2228 isotech ->"cap", "8745", / intersection = cap, u+2229 isotech ->"cup", "8746", / union = cup,

61、u+222a isotech ->"int", "8747", / integral, u+222b isotech ->"there4", "8756", / therefore, u+2234 isotech ->"sim", "8764", / tilde operator = varies with = similar to,u+223c isotech

62、->/"cong", "8773", / approximately equal to, u+2245 isotech ->"asymp", "8776", / almost equal to = asymptotic to,u+2248 isoamsr ->"ne", "8800", / not equal to, u+2260 isotech ->&am

63、p;quot;equiv", "8801", / identical to, u+2261 isotech ->"le", "8804", / less-than or equal to, u+2264 isotech ->"ge", "8805", / greater-than or equal to,u+2265 isotech ->"sub&quot

64、;, "8834", / subset of, u+2282 isotech ->"sup", "8835", / superset of, u+2283 isotech ->/"sube", "8838", / subset of or equal to, u+2286 isotech ->"supe", "8839", /

65、superset of or equal to,u+2287 isotech ->"oplus", "8853", / circled plus = direct sum,u+2295 isoamsb ->"otimes", "8855", / circled times = vector product,u+2297 isoamsb ->"perp", "8869&quo

66、t;, / up tack = orthogonal to = perpendicular,u+22a5 isotech ->"sdot", "8901", / dot operator, u+22c5 isoamsb ->/"lceil", "8968", / left ceiling = apl upstile,u+2308 isoamsc ->"rceil", "8969&a

67、mp;quot;, / right ceiling, u+2309 isoamsc ->"lfloor", "8970", / left floor = apl downstile,u+230a isoamsc ->"rfloor", "8971", / right floor, u+230b isoamsc ->"lang", "9001", / left-pointing angle bracket = bra,u+2329 isotech ->/"rang", "9002", / right-pointing angle bracket = ket,u+232a isotech ->/"loz", "9674", / lozenge, u+25ca isopub -