package bruce.lib;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* @author NaNashi
*
*/
public class Strings {
/**
* 斷行
*/
public static final String NEW_LINE = String.format("%n");
/**
* @param data
* 文字類型物件
* @return
*/
public static boolean containsNullOrEmpty(CharSequence... data) {
for (Object o : data) {
if (o == null || o.toString().trim().length() == 0)
return true;
}
return false;
}
/**
* @param data
* @return
*/
public static boolean isNullOrEmpty(CharSequence data) {
return data == null || data.toString().trim().length() == 0;
}
/**
* @param <T>
* @param array
* @param seperator
* @return
*/
public static <T> String join(T[] array, String seperator) {
StringBuilder sb = new StringBuilder();
for (T t : array)
sb.append(t.toString()).append(seperator);
sb.delete(sb.length() - seperator.length(), sb.length());
return sb.toString();
}
/**
* @param s
* @return
*/
public static String MD5(CharSequence s) {
char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
byte[] strTemp = s.toString().getBytes();
MessageDigest mdTemp = null;
try {
mdTemp = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
mdTemp.update(strTemp);
byte[] md = mdTemp.digest();
int j = md.length;
char str[] = new char[j * 2];
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md[i];
str[k++] = hexDigits[byte0 >>> 4 & 0xf];
str[k++] = hexDigits[byte0 & 0xf];
}
return new String(str);
}
/**
* @param s
* 參數字串
* @return 處理SQL的參數，NULL時預設為空字串
*/
public static String quote(CharSequence s) {
return quote(s, false);
}
/**
* @param s
* 參數字串
* @param alloweNull
* 是否轉換NULL
* @return
*/
public static String quote(CharSequence s, boolean allowNull) {
if (allowNull)
return Strings.isNullOrEmpty(s) ? "null" : String.format("'%s'", s.toString().replaceAll("'", "''"));
else
return Strings.isNullOrEmpty(s) ? "''" : String.format("'%s'", s.toString().replaceAll("'", "''"));
}
/**
* @param s
* @return
*/
public static String removeAllTags(CharSequence s) {
return s.toString().replaceAll("<[^>]+>", "");
}
/**
* @param s
* @return
*/
public static String trimTagSpaces(CharSequence s) {
StringBuilder sb = new StringBuilder(s) ;
return s.toString().replaceAll("\n", "").replaceAll("\r", "").replaceAll(">\\s+<", "><");
}
/**
* @param s
* @return
* @throws IOException
*/
public static String decodeBase64(CharSequence s) throws IOException {
return s == null ? null : new String((new sun.misc.BASE64Decoder()).decodeBuffer(s.toString()));
}
/**
* @param s
* @return
*/
public static String encodeBase64(CharSequence s) {
return s == null ? null : (new sun.misc.BASE64Encoder()).encode(s.toString().getBytes());
}
/**
* @param s
* @return
*/
public static String NCR(CharSequence s) {
StringBuilder sb = new StringBuilder();
char[] ca = s.toString().toCharArray();
for (char c : ca) {
sb.append(String.format("&#x%s;", Integer.toHexString(c)));
}
return sb.toString();
}
public static String encodeURL(CharSequence s, String encoding) throws UnsupportedEncodingException {
return URLEncoder.encode(s.toString(), encoding);
}
public static String encodeURL(CharSequence s) throws UnsupportedEncodingException {
return encodeURL(s, "UTF-8");
}
public static String decodeURL(CharSequence s, String encoding) throws UnsupportedEncodingException {
return URLDecoder.decode(s.toString(), encoding);
}
public static String decodeURL(CharSequence s) throws UnsupportedEncodingException {
return decodeURL(s, "UTF-8");
}
}
Posts
