package com.lgx8.right.common;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.StringTokenizer;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class StrTool {
public static boolean DEBUG_MODE = true;
public StrTool() {
super();
}
public static int keyWordCount(String src, String key) {
StringTokenizer st = new StringTokenizer(src, key);
int count = 0;
while (st.hasMoreTokens()) {
st.nextToken();
count++;
}
return count;
}
// public static String getStrFromSet(Set set) {
// Iterator it = set.iterator();
// String content = "";
// while (it.hasNext()) {
// BaseBusinessOBJ bo = (BaseBusinessOBJ) it.next();
// content += bo.getName() + ",";
//
// }
// if (content.equals(""))
// return "";
// content = content.substring(0, content.length() - 1);
// return content;
// }
/**
* byteHEX()，用来把一个byte类型的数转换成十六进制的ASCII表示，
* 因为java中的byte的toString无法实现这一点，我们又没有C语言中的 sprintf(outbuf,"%02X",ib)
*
* @param ib
* @return
*/
public static String byte2HEX(byte ib) {
char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a',
'b', 'c', 'd', 'e', 'f' };
char[] ob = new char[2];
ob[0] = Digit[(ib >>> 4) & 0X0F];
ob[1] = Digit[ib & 0X0F];
String s = new String(ob);
return s;
}
/**
* 将传入的字符串进行MD5加密
*
* @param source
* @return
*/
public static String toMD5(String source) {
// 加密后的字符串
String newstr = "";
try {
MessageDigest md5 = MessageDigest.getInstance("MD5");
byte[] bs = md5.digest(source.getBytes());
for (int i = 0; i < bs.length; i++) {
newstr += byte2HEX(bs[i]);
}
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return newstr;
}
static final byte[] keyBytes = { 0x11, 0x22, 0x4F, 0x58, 0x10, 0x40, 0x38,
0x28, 0x25, 0x79, 0x51, 0x55, 0x66, 0x77, 0x29, 0x74, 0x30, 0x40,
0x36, 0x28 };
public static SecretKey get3DesKey(String key) {
if (key == null) {
key = "private key";
}
// 生成一个 DESede 密钥对象
SecretKey theKey = null;
try {
byte[] encryptKey = new byte[25];
byte[] tempKey = key.getBytes();
if (tempKey.length < 24 && tempKey.length > 0) {
int times = 24 / tempKey.length + 1;
encryptKey = new byte[tempKey.length * times];
}
for (int i = 0, j = 0; i < encryptKey.length; i++, j++) {
encryptKey[i] = tempKey[j];
if (j == tempKey.length - 1) {
j = -1;
}
}
// 为上一密钥创建一个指定的 DESSede key
DESedeKeySpec spec = new DESedeKeySpec(encryptKey);
// 得到 DESSede keys
SecretKeyFactory keyFactory = SecretKeyFactory
.getInstance("DESede");
theKey = keyFactory.generateSecret(spec);
} catch (Exception e) {
e.printStackTrace();
}
return theKey;
}
/**
* 用指定的key 加密指定的字符串
*
* @param strPwd
* @param strKey
* @return
* @throws InvalidKeySpecException
*/
public static String getEncryptStr(String strPwd, String strKey) {
if (strPwd == null || "".equals(strPwd)) {
return "";
}
// 获取加密key
SecretKey theKey = get3DesKey(strKey);
byte[] ciphertext = null;
String cipherString = "";
try {
Cipher cipher = Cipher.getInstance("Desede/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, theKey);
// 注意把字符串转换成字节需要指定编码方式，一般用此“UTF8”。
byte[] plaintext = strPwd.getBytes("UTF8");
ciphertext = cipher.doFinal(plaintext);
BASE64Encoder enc = new BASE64Encoder();
cipherString = enc.encode(ciphertext);
} catch (Exception e) {
cipherString = strPwd;
System.err.println("加密方法StrTool.getEncryptStr()异常（Key值存在问题）：\n"
+ e.getMessage());
}
return cipherString;
}
/**
* 用指定的key 解密指定的字符串
*
* @param strPwdCode
* @param strKey
* @return
* @throws InvalidKeyException
*/
public static String getDencryptedStr(String strPwdCode, String strKey) {
if (strPwdCode == null || "".equals(strPwdCode)) {
return "";
}
// 获取解密key
SecretKey theKey = get3DesKey(strKey);
String output = "";
try {
Cipher cipher = Cipher.getInstance("Desede/ECB/PKCS5Padding");
BASE64Decoder dec = new BASE64Decoder();
byte[] ciphertext = dec.decodeBuffer(strPwdCode);
// 解密过程。
cipher.init(Cipher.DECRYPT_MODE, theKey);
byte[] decryptedText = cipher.doFinal(ciphertext);
output = new String(decryptedText, "UTF8");
} catch (Exception e) {
output = strPwdCode;
System.err
.println("解密方法StrTool.getDencryptedStr()异常（Key值存在问题或字符串未加密过）：\n"
+ e.getMessage());
}
return output;
}
/**
* 把ip地址转换为字符串
* @param ip ip地址
* @return 字符串
* modify by lvwei 2009/11/18
*/
public static long ipStr2Long(String ip) {
String[] ips = ip.split("\\.");
return ((StrTool.parseLong(ips[0]) <<24)
+ (StrTool.parseLong(ips[1]) <<16)
+ (StrTool.parseLong(ips[2]) <<8)
+ StrTool.parseLong(ips[3]));
}
public static String ipLong2Str(long ip) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < 4; i++) {
long temp = ip & 0xff;
sb.insert(0, temp);
if (i != 3)
sb.insert(0, ".");
ip = ip >> 8;
}
return sb.toString();
}
public static void printStr(String msg) {
if (DEBUG_MODE) {
System.out.print(msg + "\n");
}
}
public static void printException(Exception exc) {
if (DEBUG_MODE) {
if (exc != null) {
exc.printStackTrace();
}
}
}
public static int parseInt(String str) {
if (str != null && !"".equals(str)) {
try {
return Integer.parseInt(str);
} catch (Exception ex) {
printException(ex);
}
}
return 0;
}
public static int parseInt(String str, int val) {
if (str != null && !"".equals(str)) {
try {
return Integer.parseInt(str, val);
} catch (Exception ex) {
printException(ex);
}
}
return 0;
}
public static long parseLong(String str) {
if (str != null && !"".equals(str)) {
try {
return Long.parseLong(str);
} catch (Exception ex) {
printException(ex);
}
}
return 0;
}
public static double parseDouble(String str) {
if (str != null && !"".equals(str)) {
try {
return Double.parseDouble(str);
} catch (Exception ex) {
printException(ex);
}
}
return 0.0;
}
public static boolean isNum(String str) {
boolean flag = true;
char[] ch = str.toCharArray();
for (int i = 0; i < ch.length; i++) {
if (!Character.isDigit(ch[i])) {
flag = false;
break;
}
}
return flag;
}
//===== Begin ========JavaScript escape/unescape 编码的 Java 实现=====================
private final static String[] hex = { "00", "01", "02", "03", "04", "05",
"06", "07", "08", "09", "0A", "0B", "0C", "0D", "0E", "0F", "10",
"11", "12", "13", "14", "15", "16", "17", "18", "19", "1A", "1B",
"1C", "1D", "1E", "1F", "20", "21", "22", "23", "24", "25", "26",
"27", "28", "29", "2A", "2B", "2C", "2D", "2E", "2F", "30", "31",
"32", "33", "34", "35", "36", "37", "38", "39", "3A", "3B", "3C",
"3D", "3E", "3F", "40", "41", "42", "43", "44", "45", "46", "47",
"48", "49", "4A", "4B", "4C", "4D", "4E", "4F", "50", "51", "52",
"53", "54", "55", "56", "57", "58", "59", "5A", "5B", "5C", "5D",
"5E", "5F", "60", "61", "62", "63", "64", "65", "66", "67", "68",
"69", "6A", "6B", "6C", "6D", "6E", "6F", "70", "71", "72", "73",
"74", "75", "76", "77", "78", "79", "7A", "7B", "7C", "7D", "7E",
"7F", "80", "81", "82", "83", "84", "85", "86", "87", "88", "89",
"8A", "8B", "8C", "8D", "8E", "8F", "90", "91", "92", "93", "94",
"95", "96", "97", "98", "99", "9A", "9B", "9C", "9D", "9E", "9F",
"A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "AA",
"AB", "AC", "AD", "AE", "AF", "B0", "B1", "B2", "B3", "B4", "B5",
"B6", "B7", "B8", "B9", "BA", "BB", "BC", "BD", "BE", "BF", "C0",
"C1", "C2", "C3", "C4", "C5", "C6", "C7", "C8", "C9", "CA", "CB",
"CC", "CD", "CE", "CF", "D0", "D1", "D2", "D3", "D4", "D5", "D6",
"D7", "D8", "D9", "DA", "DB", "DC", "DD", "DE", "DF", "E0", "E1",
"E2", "E3", "E4", "E5", "E6", "E7", "E8", "E9", "EA", "EB", "EC",
"ED", "EE", "EF", "F0", "F1", "F2", "F3", "F4", "F5", "F6", "F7",
"F8", "F9", "FA", "FB", "FC", "FD", "FE", "FF" };
private final static byte[] val = { 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x00, 0x01,
0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F };
public static String unescape(String s) {
StringBuffer sbuf = new StringBuffer();
int i = 0;
int len = s.length();
while (i < len) {
int ch = s.charAt(i);
if ('A' <= ch && ch <= 'Z') {
sbuf.append((char) ch);
} else if ('a' <= ch && ch <= 'z') {
sbuf.append((char) ch);
} else if ('0' <= ch && ch <= '9') {
sbuf.append((char) ch);
} else if (ch == '-' || ch == '_' || ch == '.' || ch == '!'
|| ch == '~' || ch == '*' || ch == '\'' || ch == '('
|| ch == ')') {
sbuf.append((char) ch);
} else if (ch == '%') {
int cint = 0;
if ('u' != s.charAt(i + 1)) {
cint = (cint << 4) | val[s.charAt(i + 1)];
cint = (cint << 4) | val[s.charAt(i + 2)];
i += 2;
} else {
cint = (cint << 4) | val[s.charAt(i + 2)];
cint = (cint << 4) | val[s.charAt(i + 3)];
cint = (cint << 4) | val[s.charAt(i + 4)];
cint = (cint << 4) | val[s.charAt(i + 5)];
i += 5;
}
sbuf.append((char) cint);
} else {
sbuf.append((char) ch);
}
i++;
}
return sbuf.toString();
}
public static String escape(String s) {
StringBuffer sbuf = new StringBuffer();
int len = s.length();
for (int i = 0; i < len; i++) {
int ch = s.charAt(i);
if (ch == ' ') { // space : map to '+'
sbuf.append('+');
} else if ('A' <= ch && ch <= 'Z') { // 'A'..'Z' : as it was
sbuf.append((char) ch);
} else if ('a' <= ch && ch <= 'z') { // 'a'..'z' : as it was
sbuf.append((char) ch);
} else if ('0' <= ch && ch <= '9') { // '0'..'9' : as it was
sbuf.append((char) ch);
} else if (ch == '-'
|| ch == '_' // unreserved : as it was
|| ch == '.' || ch == '!' || ch == '~' || ch == '*'
|| ch == '\'' || ch == '(' || ch == ')') {
sbuf.append((char) ch);
} else if (ch <= 0x007F) { // other ASCII : map to %XX
sbuf.append('%');
sbuf.append(hex[ch]);
} else { // unicode : map to %uXXXX
sbuf.append('%');
sbuf.append('u');
sbuf.append(hex[(ch >>> 8)]);
sbuf.append(hex[(0x00FF & ch)]);
}
}
return sbuf.toString();
}
//===== End ========JavaScript escape/unescape 编码的 Java 实现=====================
/**
* 如果是null转化为空串，否则返回原字符串
* create by yangwm in Nov 4, 2008 9:15:00 PM
* @param str
* @return
*/
public static final String nullToEmptyString(String str) {
return str == null ? "" : str;
}
/**
* 如果是null（包括"null"）转化为空串，否则返回原字符串
* create by yangwm in Nov 4, 2008 9:15:00 PM
* @param str
* @return
*/
public static final String nullStringToEmptyString(String str) {
return str == null || "null".equalsIgnoreCase(str) ? "" : str;
}
/**
* 比较两个字符串是否相同，如果两个字符串为null或""均视为相同
* create by yangwm in Nov 4, 2008 8:52:57 PM
* @param str1
* @param str2
* @return 相同为true，否则false
*/
public static boolean equals(String str1, String str2) {
str1 = nullToEmptyString(str1);
str2 = nullToEmptyString(str2);
return str1.equals(str2);
}
/**
* 比较两个字符串是否相同，如果两个字符串为null或""均视为相同且忽略大小写
* create by yangwm in Nov 4, 2008 8:52:57 PM
* @param str1
* @param str2
* @return 相同为true，否则false
*/
public static boolean equalsIgnoreCase(String str1, String str2) {
str1 = nullToEmptyString(str1);
str2 = nullToEmptyString(str2);
return str1.equalsIgnoreCase(str2);
}
/**
* 比较两个字符串是否相同，如果两个字符串为null或""或"null"均视为相同
* create by yangwm in Nov 4, 2008 8:52:57 PM
* @param str1
* @param str2
* @return 相同为true，否则false
*/
public static boolean equateNullIgnoreCase(String str1, String str2) {
str1 = nullStringToEmptyString(str1);
str2 = nullStringToEmptyString(str2);
return str1.equals(str2);
}
/**
* 字符串是否为空， null或""均视为空
* @param value
* @return
*/
public static boolean isNullStr(String value) {
return value == null || value.trim().equals("");
}
/**
* 字符串是否为空, null或""或"null"均视为空
* create by yangwm in Nov 5, 2008 3:59:24 PM
* @param value
* @return
*/
public static boolean isEquateNullStr(String value) {
return equateNullIgnoreCase(null, value);
}
// ---------------------- main test ---------------------------
public static void main(String[] args) {
// String str = "bid=a,bid=b,bid=c";
// System.out.println(keyWordCount(str, ","));
String stest = "1234 abcd[]()<+>,.~\\";
System.out.println(stest);
System.out.println(toMD5("abc123"));
// test nullToEmptyString and test nullStringToEmptyString
System.out.println("------------test nullToEmptyString and nullStringToEmptyString ------------");
System.out.println(nullToEmptyString(null));
System.out.println(nullToEmptyString(""));
System.out.println(nullToEmptyString("null"));
System.out.println(nullStringToEmptyString(null));
System.out.println(nullStringToEmptyString(""));
System.out.println(nullStringToEmptyString("null"));
// test equate
// System.out.println("------------test equate and equalsIgnoreCase ------------");
// System.out.println(equate(null, null));
// System.out.println(equate("", ""));
// System.out.println(equate(null, ""));
// System.out.println(equate("", null));
// System.out.println(equate(null, "abc"));
// System.out.println(equate("abc", "ABC"));
// System.out.println(equateIgnoreCase("abc", "ABC"));
}
}