获取汉字首字母

import java.io.IOException;import java.io.UnsupportedEncodingException;import java.net.URLDecoder;import java.net.URLEncoder;public class Chinesetoen {private final int[] li_SecPosValue = { 1601, 1637, 1833, 2078, 2274, 2302,2433, 2594, 2787, 3106, 3212, 3472, 3635, 3722, 3730, 3858, 4027,4086, 4390, 4558, 4684, 4925, 5249, 5590 };private final String[] lc_FirstLetter = { "a", "b", "c", "d", "e", "f","g", "h", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t","w", "x", "y", "z" };private final String ls_SecondSecTable = "CJWGNSPGCGNE[Y[BTYYZDXYKYGT[JNNJQMBSGZSCYJSYY[PGKBZGY[YWJKGKLJYWKPJQHY[W[DZLSGMRYPYWWCCKZNKYYGTTNJJNYKKZYTCJNMCYLQLYPYQFQRPZSLWBTGKJFYXJWZLTBNCXJJJJTXDTTSQZYCDXXHGCK[PHFFSS[YBGXLPPBYLL[HLXS[ZM[JHSOJNGHDZQYKLGJHSGQZHXQGKEZZWYSCSCJXYEYXADZPMDSSMZJZQJYZC[J[WQJBYZPXGZNZCPWHKXHQKMWFBPBYDTJZZKQHYLYGXFPTYJYYZPSZLFCHMQSHGMXXSXJ[[DCSBBQBEFSJYHXWGZKPYLQBGLDLCCTNMAYDDKSSNGYCSGXLYZAYBNPTSDKDYLHGYMYLCXPY[JNDQJWXQXFYYFJLEJPZRXCCQWQQSBNKYMGPLBMJRQCFLNYMYQMSQYRBCJTHZTQFRXQHXMJJCJLXQGJMSHZKBSWYEMYLTXFSYDSWLYCJQXSJNQBSCTYHBFTDCYZDJWYGHQFRXWCKQKXEBPTLPXJZSRMEBWHJLBJSLYYSMDXLCLQKXLHXJRZJMFQHXHWYWSBHTRXXGLHQHFNM[YKLDYXZPYLGG[MTCFPAJJZYLJTYANJGBJPLQGDZYQYAXBKYSECJSZNSLYZHSXLZCGHPXZHZNYTDSBCJKDLZAYFMYDLEBBGQYZKXGLDNDNYSKJSHDLYXBCGHXYPKDJMMZNGMMCLGWZSZXZJFZNMLZZTHCSYDBDLLSCDDNLKJYKJSYCJLKWHQASDKNHCSGANHDAASHTCPLCPQYBSDMPJLPZJOQLCDHJJYSPRCHN[NNLHLYYQYHWZPTCZGWWMZFFJQQQQYXACLBHKDJXDGMMYDJXZLLSYGXGKJRYWZWYCLZMSSJZLDBYD[FCXYHLXCHYZJQ[[QAGMNYXPFRKSSBJLYXYSYGLNSCMHZWWMNZJJLXXHCHSY[[TTXRYCYXBYHCSMXJSZNPWGPXXTAYBGAJCXLY[DCCWZOCWKCCSBNHCPDYZNFCYYTYCKXKYBSQKKYTQQXFCWCHCYKELZQBSQYJQCCLMTHSYWHMKTLKJLYCXWHEQQHTQH[PQ[QSCFYMNDMGBWHWLGSLLYSDLMLXPTHMJHWLJZYHZJXHTXJLHXRSWLWZJCBXMHZQXSDZPMGFCSGLSXYMJSHXPJXWMYQKSMYPLRTHBXFTPMHYXLCHLHLZYLXGSSSSTCLSLDCLRPBHZHXYYFHB[GDMYCNQQWLQHJJ[YWJZYEJJDHPBLQXTQKWHLCHQXAGTLXLJXMSL[HTZKZJECXJCJNMFBY[SFYWYBJZGNYSDZSQYRSLJPCLPWXSDWEJBJCBCNAYTWGMPAPCLYQPCLZXSBNMSGGFNZJJBZSFZYNDXHPLQKZCZWALSBCCJX[YZGWKYPSGXFZFCDKHJGXDLQFSGDSLQWZKXTMHSBGZMJZRGLYJBPMLMSXLZJQQHZYJCZYDJWBMYKLDDPMJEGXYHYLXHLQYQHKYCWCJMYYXNATJHYCCXZPCQLBZWWYTWBQCMLPMYRJCCCXFPZNZZLJPLXXYZTZLGDLDCKLYRZZGQTGJHHGJLJAXFGFJZSLCFDQZLCLGJDJCSNZLLJPJQDCCLCJXMYZFTSXGCGSBRZXJQQCTZHGYQTJQQLZXJYLYLBCYAMCSTYLPDJBYREGKLZYZHLYSZQLZNWCZCLLWJQJJJKDGJZOLBBZPPGLGHTGZXYGHZMYCNQSYCYHBHGXKAMTXYXNBSKYZZGJZLQJDFCJXDYGJQJJPMGWGJJJPKQSBGBMMCJSSCLPQPDXCDYYKY[CJDDYYGYWRHJRTGZNYQLDKLJSZZGZQZJGDYKSHPZMTLCPWNJAFYZDJCNMWESCYGLBTZCGMSSLLYXQSXSBSJSBBSGGHFJLYPMZJNLYYWDQSHZXTYYWHMZYHYWDBXBTLMSYYYFSXJC[DXXLHJHF[SXZQHFZMZCZTQCXZXRTTDJHNNYZQQMNQDMMG[YDXMJGDHCDYZBFFALLZTDLTFXMXQZDNGWQDBDCZJDXBZGSQQDDJCMBKZFFXMKDMDSYYSZCMLJDSYNSBRSKMKMPCKLGDBQTFZSWTFGGLYPLLJZHGJ[GYPZLTCSMCNBTJBQFKTHBYZGKPBBYMTDSSXTBNPDKLEYCJNYDDYKZDDHQHSDZSCTARLLTKZLGECLLKJLQJAQNBDKKGHPJTZQKSECSHALQFMMGJNLYJBBTMLYZXDCJPLDLPCQDHZYCBZSCZBZMSLJFLKRZJSNFRGJHXPDHYJYBZGDLQCSEZGXLBLGYXTWMABCHECMWYJYZLLJJYHLG[DJLSLYGKDZPZXJYYZLWCXSZFGWYYDLYHCLJSCMBJHBLYZLYCBLYDPDQYSXQZBYTDKYXJY[CNRJMPDJGKLCLJBCTBJDDBBLBLCZQRPPXJCJLZCSHLTOLJNMDDDLNGKAQHQHJGYKHEZNMSHRP[QQJCHGMFPRXHJGDYCHGHLYRZQLCYQJNZSQTKQJYMSZSWLCFQQQXYFGGYPTQWLMCRNFKKFSYYLQBMQAMMMYXCTPSHCPTXXZZSMPHPSHMCLMLDQFYQXSZYYDYJZZHQPDSZGLSTJBCKBXYQZJSGPSXQZQZRQTBDKYXZKHHGFLBCSMDLDGDZDBLZYYCXNNCSYBZBFGLZZXSWMSCCMQNJQSBDQSJTXXMBLTXZCLZSHZCXRQJGJYLXZFJPHYMZQQYDFQJJLZZNZJCDGZYGCTXMZYSCTLKPHTXHTLBJXJLXSCDQXCBBTJFQZFSLTJBTKQBXXJJLJCHCZDBZJDCZJDCPRNPQCJPFCZLCLZXZDMXMPHJSGZGSZZQLYLWTJPFSYASMCJBTZKYCWMYTCSJJLJCQLWZMALBXYFBPNLSFHTGJWEJJXXGLLJSTGSHJQLZFKCGNNNSZFDEQFHBSAQTGYLBXMMYGSZLDYDQMJJRGBJTKGDHGKBLQKBDMBYLXWCXYTTYBKMRTJZXQJBHLMHMJJZMQASLDCYXYQDLQCAFYWYXQHZ ";int li_offset;/** * \u53D6\u5F97\u7ED9\u5B9A\u6C49\u5B57\u4E32\u7684\u9996\u5B57\u6BCD\u4E32,\u5373\u58F0\u6BCD\u4E32 *  * @param str *            \u7ED9\u5B9A\u6C49\u5B57\u4E32 * @return \u58F0\u6BCD\u4E32 */public String getAllFirstLetter(String str) {if (str == null || str.trim().length() == 0) {return "";}String _str = "";for (int i = 0; i < str.length(); i++) {_str = _str + this.getFirstLetter(str.substring(i, i + 1));}return _str;}/** * \u53D6\u5F97\u7ED9\u5B9A\u6C49\u5B57\u7684\u9996\u5B57\u6BCD,\u5373\u58F0\u6BCD *  * @param chinese *            \u7ED9\u5B9A\u7684\u6C49\u5B57 * @return \u7ED9\u5B9A\u6C49\u5B57\u7684\u58F0\u6BCD *///\u8F93\u5165\u5B57\u7B26\u4E32\u6C49\u5B57\uFF0C\u8FD4\u56DE\u5B57\u7B26\u4E32\uFF0C\u5982\u679C\u6709\u6C49\u5B57\uFF0C\u5C06\u6C49\u5B57\u7684\u9996\u5B57\u6BCD\u7684\u8FD4\u56DEprivate String getFirstLetter(String chinese) {if (chinese == null || chinese.trim().length() == 0) {return "";}chinese = conversionStr(chinese, "GB2312", "ISO8859-1");if (chinese.length() > 1) // \u5224\u65AD\u662F\u4E0D\u662F\u6C49\u5B57{int li_SectorCode = (int) chinese.charAt(0); // \u6C49\u5B57\u533A\u7801int li_PositionCode = (int) chinese.charAt(1); // \u6C49\u5B57\u4F4D\u7801li_SectorCode = li_SectorCode - 160;li_PositionCode = li_PositionCode - 160;int li_SecPosCode = li_SectorCode * 100 + li_PositionCode; // \u6C49\u5B57\u533A\u4F4D\u7801if (li_SecPosCode > 1600 && li_SecPosCode < 5590) {for (int i = 0; i < 23; i++) {if (li_SecPosCode >= li_SecPosValue[i]&& li_SecPosCode < li_SecPosValue[i + 1]) {chinese = lc_FirstLetter[i].toUpperCase();break;}}} else { // \u7B2C\u4E00\u4E2A\u5B57\u7B26li_offset = (li_SectorCode - 56) * 94 + li_PositionCode - 1; // \u8BA1\u7B97\u504F\u79FB\u91CFif (li_offset >= 0 && li_offset <= 3007) { // \u4E8C\u533A\u6C49\u5B57chinese = ls_SecondSecTable.substring(li_offset,li_offset + 1); // \u53D6\u51FA\u6B64\u5B57\u58F0\u6BCD} else // \u975E\u6C49\u5B57\u5B57\u7B26,\u5982\u56FE\u5F62\u7B26\u53F7\u6216ASCII\u7801{chinese = conversionStr(chinese, "ISO8859-1", "GB2312");chinese = chinese.substring(0, 1);}}}return chinese;}/** * \u5B57\u7B26\u4E32\u7F16\u7801\u8F6C\u6362 *  * @param str *            \u8981\u8F6C\u6362\u7F16\u7801\u7684\u5B57\u7B26\u4E32 * @param charsetName *            \u539F\u6765\u7684\u7F16\u7801 * @param toCharsetName *            \u8F6C\u6362\u540E\u7684\u7F16\u7801 * @return \u7ECF\u8FC7\u7F16\u7801\u8F6C\u6362\u540E\u7684\u5B57\u7B26\u4E32 */private static String conversionStr(String str, String charsetName,String toCharsetName) {try {str = new String(str.getBytes(charsetName), toCharsetName);} catch (UnsupportedEncodingException ex) {System.out.println("\u5B57\u7B26\u4E32\u7F16\u7801\u8F6C\u6362\u5F02\u5E38\uFF1A" + ex.getMessage());}return str;}public static void main(String[] args) throws IOException {String str="\u4F60\u8FD8\u597D\u5417";String encoder=URLEncoder.encode(str,"utf-8");System.out.println(encoder);String decode=URLDecoder.decode(encoder,"utf-8");System.out.println(decode);Chinesetoen chinesetoen=new Chinesetoen(); System.out.println(chinesetoen.getAllFirstLetter(decode).toUpperCase());}}