springmvc+freemarker+easyUi 框架

package com.utils; import java.io.BufferedInputStream; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.security.MessageDigest; import java.text.DecimalFormat; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; /** * 各种数据类型转换成字符串类型工具类 * @author 尹俊 * @date 2016/03/17 */ public class StringTools { private static DecimalFormat formater = new DecimalFormat(); /** * 整数常量 * */ public static final String DEC_INT = "#"; /** * FLOAT常量 * */ public static final String DEC_FLOAT = "#0.00"; /** * DOUBLE常量 * */ public static final String DEC_DOUBLE = "#0.000"; /** * 金额常量 * */ public static final String DEC_MONEY = "###,##0.00"; /** * * @param l 入参需要转换的数据 * @param format 格式比如 #0.00 * @return */ public static String getDecimalString(long l, String format) { if (!format.equals(formater.toPattern())) { formater.applyPattern(format); } return formater.format(l); } /** * * @param d 入参需要转换的数据 * @param format 格式比如 #0.00 * @return */ public static String getDecimalString(double d, String format) { if (!format.equals(formater.toPattern())) { formater.applyPattern(format); } return formater.format(d); } /** * * @param s 入参需要转换的数据 * @param format 格式比如 #0.00 * @return */ public static Number parseNumber(String s, String format) { if (!format.equals(formater.toPattern())) { formater.applyPattern(format); } try { return formater.parse(s); } catch (Exception e) { return null; } } /** * * @param s * @param code * @return */ public static String URLEncoder(String s, String code) { s = s.replace('\\', '/'); String[] split = s.split("/"); StringBuffer encode = new StringBuffer(); try { for (int i = 0; i < split.length; i++) { encode.append("/").append( java.net.URLEncoder.encode(split[i], code)); } } catch (java.io.UnsupportedEncodingException ex) { return null; } return encode.substring(1); } /** * * @param s * @param code * @return */ public static String URLDecoder(String s, String code) { s = s.replace('\\', '/'); String[] split = s.split("/"); StringBuffer decode = new StringBuffer(); try { for (int i = 0; i < split.length; i++) { decode.append("/").append( java.net.URLDecoder.decode(split[i], code)); } } catch (java.io.UnsupportedEncodingException ex) { return null; } return decode.substring(1); } /** * * @param password * @param algorithm * Message Digest Algorithms The algorithm names in this section * can be specified when generating an instance of MessageDigest. * MD2: The MD2 message digest algorithm as defined in RFC 1319. * MD5: The MD5 message digest algorithm as defined in RFC 1321. * SHA-1: The Secure Hash Algorithm, as defined in Secure Hash * Standard, NIST FIPS 180-1. SHA-256, SHA-384, and SHA-512: New * hash algorithms for which the draft Federal Information * Processing Standard 180-2, Secure Hash Standard (SHS) is now * available. SHA-256 is a 256-bit hash function intended to * provide 128 bits of security against collision attacks, while * SHA-512 is a 512-bit hash function intended to provide 256 * bits of security. A 384-bit hash may be obtained by truncating * the SHA-512 output. * @return */ public static String encodePassword(String password, String algorithm) { byte[] unencodedPassword = password.getBytes(); MessageDigest md = null; try { // first create an instance, given the provider md = MessageDigest.getInstance(algorithm); } catch (Exception e) { return password; } md.reset(); // call the update method one or more times // (useful when you don't know the size of your data, eg. stream) md.update(unencodedPassword); // now calculate the hash byte[] encodedPassword = md.digest(); StringBuffer buf = new StringBuffer(); for (int i = 0; i < encodedPassword.length; i++) { if ((encodedPassword[i] & 0xff) < 0x10) { buf.append("0"); } buf.append(Long.toString(encodedPassword[i] & 0xff, 16)); } return buf.toString(); } /** * * @param str * @return */ public static String encodeString(String str) { sun.misc.BASE64Encoder encoder = new sun.misc.BASE64Encoder(); return encoder.encodeBuffer(str.getBytes()).trim(); } /** * * @param str * @return */ public static String decodeString(String str) { sun.misc.BASE64Decoder dec = new sun.misc.BASE64Decoder(); try { return new String(dec.decodeBuffer(str)); } catch (IOException io) { throw new RuntimeException(io.getMessage(), io.getCause()); } } /** * 判断字符串是否为空或null * * @param str * @return */ public static boolean isBlank(String str) { int strLen; if (str == null || (strLen = str.length()) == 0) { return true; } for (int i = 0; i < strLen; i++) { if (!Character.isWhitespace(str.charAt(i))) { return false; } } return true; } /** * * @param string * @param encoding * @return */ public static String toEncoding(String string, String encoding) { if (string == null) { return null; } try { byte[] bytes = string.getBytes("ISO8859-1"); return new String(bytes, encoding); } catch (java.io.UnsupportedEncodingException ex) { return null; } } /** * * @param string * @param oldEncoding * @param newEncoding * @return */ public static String toEncoding(String string, String oldEncoding, String newEncoding) { if (string == null) { return null; } try { byte[] bytes = string.getBytes(oldEncoding); return new String(bytes, newEncoding); } catch (java.io.UnsupportedEncodingException ex) { return null; } } /** * 判断字符串能否转整型数字 * @param value需要判断的字符串 * @return */ public static boolean isInt(String value) { try { Integer.parseInt(value); return true; } catch (Exception ex) { return false; } } /** * 判断字符是否能否转LONG型数字 * @param value 需要判断的字符串 * @return */ public static boolean isLong(String value) { try { Long.parseLong(value); return true; } catch (Exception ex) { return false; } } /** * 字符串转金额字符串 * @param s * @return */ public static String getMoneyString(String s) { if (s == null || s.equals("")) { return "0.00"; } try { return getMoneyString(Double.parseDouble(s)); } catch (Exception e) { return s; } } /** * DOUBLE转金额字符串 * @param d * @return */ public static String getMoneyString(double d) { if (!DEC_MONEY.equals(formater.toPattern())) { formater.applyPattern(DEC_MONEY); } return formater.format(d); } /** * 字符串转DOUBLE金额 * @param s * @return */ public static double parseMoney(String s) { if (!DEC_MONEY.equals(formater.toPattern())) { formater.applyPattern(DEC_MONEY); } try { return formater.parse(s).doubleValue(); } catch (Exception e) { return 0; } } /** * * @param s * @return */ public static String getDoubleString(String s) { if (s == null || s.equals("")) { return "0.000"; } try { return getDoubleString(Double.parseDouble(s)); } catch (Exception e) { return