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| import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.security.MessageDigest;
import java.util.Date;
import java.util.Formatter;
import java.util.UUID;
import org.springframework.lang.Nullable;
import org.springframework.util.DigestUtils;
public class StringUtils extends org.springframework.util.StringUtils {
public static boolean equals(@Nullable String str1, @Nullable String str2) {
if (str1 == null || str2 == null) {
return (str1 == null && str2 == null);
}
return str1.equals(str2);
}
public static boolean isBlank(@Nullable String string) {
if (isEmpty(string)) {
return true;
}
for (int i = 0; i < string.length(); i++) {
if (!Character.isWhitespace(string.charAt(i))) {
return false;
}
}
return true;
}
public static boolean isNotBlank(@Nullable String string) {
return !StringUtils.isBlank(string);
}
public static boolean isBlank(@Nullable Integer id) {
return id == null || id == 0;
}
public static boolean isNotBlank(@Nullable Integer id) {
return id != null && id != 0;
}
public static String[] split(@Nullable String string, @Nullable String delimiter, int limit) {
if (isEmpty(string) || delimiter == null || limit == 1) {
return new String[]{string};
}
return string.split(delimiter, limit);
}
public static String uuid() {
return UUID.randomUUID().toString().replace("-", "");
}
private static final String[] chars = new String[] { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l",
"m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "0", "1", "2", "3", "4", "5", "6",
"7", "8", "9", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
"S", "T", "U", "V", "W", "X", "Y", "Z" };
public static String unid8() {
return StringUtils.unid8(null);
}
private static String unid8(String uuid32) {
StringBuffer shortBuffer = new StringBuffer();
if (StringUtils.isBlank(uuid32)) {
uuid32 = StringUtils.uuid();
}
for (int i = 0; i < 8; i++) {
String str = uuid32.substring(i * 4, i * 4 + 4);
int x = Integer.parseInt(str, 16);
shortBuffer.append(StringUtils.chars[x % 0x3E]);
}
return shortBuffer.toString();
}
public static String unid20() {
long ts = new Date().getTime();
return String.format("%d_%s", ts, StringUtils.unid8());
}
public static String MD5(String str) {
if (str == null) {
str = "";
}
return DigestUtils.md5DigestAsHex(str.getBytes());
}
public static String SHA1(String str) {
if (str == null) {
return "";
}
try {
MessageDigest crypt = MessageDigest.getInstance("SHA-1");
crypt.reset();
crypt.update(str.getBytes("UTF-8"));
return byteToHex(crypt.digest());
} catch (Exception e) {
e.printStackTrace();
}
return str;
}
private static String byteToHex(final byte[] hash) {
Formatter formatter = new Formatter();
for (byte b : hash) {
formatter.format("%02x", b);
}
String result = formatter.toString();
formatter.close();
return result;
}
public static String urlDecode(String raw) {
try {
return URLDecoder.decode(raw, "UTF-8");
} catch (UnsupportedEncodingException uee) {
throw new IllegalStateException(uee);
}
}
public static String urlEncode(String str) {
try {
return URLEncoder.encode(str, "UTF-8");
} catch (UnsupportedEncodingException uee) {
throw new IllegalStateException(uee);
}
}
public static String urlEncode(String str, String en) {
try {
return URLEncoder.encode(str, en);
} catch (UnsupportedEncodingException uee) {
throw new IllegalStateException(uee);
}
}
public static String convert(String str, String from, String to) {
try {
str = new String(str.getBytes(from), to);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return str;
}
}
|