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package com.lmax.disruptor.spring.boot.util;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;
import java.util.Random;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.TimeZone;
import java.util.TreeSet;
import org.springframework.util.CollectionUtils;
import org.springframework.util.ObjectUtils;
public abstract class StringUtils extends org.apache.commons.lang3.StringUtils {
private static final String FOLDER_SEPARATOR = "/";
private static final String WINDOWS_FOLDER_SEPARATOR = "\\";
private static final String TOP_PATH = "..";
private static final String CURRENT_PATH = ".";
private static final char EXTENSION_SEPARATOR = '.';
/**
* Any number of these characters are considered delimiters between
* multiple context config paths in a single String value.
*/
public static String CONFIG_LOCATION_DELIMITERS = ",; \t\n";
private static final int[] allChineseScope = { 1601, 1637, 1833, 2078,
2274, 2302, 2433, 2594, 2787, 3106, 3212, 3472, 3635, 3722, 3730,
3858, 4027, 4086, 4390, 4558, 4684, 4925, 5249, 5600,
Integer.MAX_VALUE };
public static final char unknowChar = '*';
private static final char[] allEnglishLetter = { 'A', 'B', 'C', 'D', 'E',
'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',
'T', 'W', 'X', 'Y', 'Z', unknowChar };
/**
* 字串是否为空
*
* @param str
* @return
*/
public static boolean isEmpty(String str) {
if (str == null) {
return true;
} else if (str.length() == 0) {
return true;
} else if ("NULL".equals(str.toUpperCase())) {
return true;
}
return false;
}
/**
* 该方法不能被删除；可能引起调用者代码报错
*/
public static boolean isNotEmpty(String str) {
return !isEmpty(str);
}
/**
* 判断 Null 或 空字符串
*
* @param str
* @return
*/
public static boolean isNull(String str) {
return str == null || str.trim().length() == 0;
}
//---------------------------------------------------------------------
// General convenience methods for working with Strings
//---------------------------------------------------------------------
/**
* Check whether the given String is empty.
* This method accepts any Object as an argument, comparing it to
* {@code null} and the empty String. As a consequence, this method
* will never return {@code true} for a non-null non-String object.
*
The Object signature is useful for general attribute handling code
* that commonly deals with Strings but generally has to iterate over
* Objects since attributes may e.g. be primitive value objects as well.
* @param str the candidate String
* @since 3.2.1
*/
public static boolean isEmpty(Object str) {
return (str == null || "".equals(str));
}
/**
* Check that the given CharSequence is neither {@code null} nor of length 0.
* Note: Will return {@code true} for a CharSequence that purely consists of whitespace.
*
* StringUtils.hasLength(null) = false
* StringUtils.hasLength("") = false
* StringUtils.hasLength(" ") = true
* StringUtils.hasLength("Hello") = true
*
* @param str the CharSequence to check (may be {@code null})
* @return {@code true} if the CharSequence is not null and has length
* @see #hasText(String)
*/
public static boolean hasLength(CharSequence str) {
return (str != null && str.length() > 0);
}
/**
* Check that the given String is neither {@code null} nor of length 0.
* Note: Will return {@code true} for a String that purely consists of whitespace.
* @param str the String to check (may be {@code null})
* @return {@code true} if the String is not null and has length
* @see #hasLength(CharSequence)
*/
public static boolean hasLength(String str) {
return hasLength((CharSequence) str);
}
/**
* Check whether the given CharSequence has actual text.
* More specifically, returns {@code true} if the string not {@code null},
* its length is greater than 0, and it contains at least one non-whitespace character.
*
* StringUtils.hasText(null) = false
* StringUtils.hasText("") = false
* StringUtils.hasText(" ") = false
* StringUtils.hasText("12345") = true
* StringUtils.hasText(" 12345 ") = true
*
* @param str the CharSequence to check (may be {@code null})
* @return {@code true} if the CharSequence is not {@code null},
* its length is greater than 0, and it does not contain whitespace only
* @see Character#isWhitespace
*/
public static boolean hasText(CharSequence str) {
if (!hasLength(str)) {
return false;
}
int strLen = str.length();
for (int i = 0; i < strLen; i++) {
if (!Character.isWhitespace(str.charAt(i))) {
return true;
}
}
return false;
}
/**
* Check whether the given String has actual text.
* More specifically, returns {@code true} if the string not {@code null},
* its length is greater than 0, and it contains at least one non-whitespace character.
* @param str the String to check (may be {@code null})
* @return {@code true} if the String is not {@code null}, its length is
* greater than 0, and it does not contain whitespace only
* @see #hasText(CharSequence)
*/
public static boolean hasText(String str) {
return hasText((CharSequence) str);
}
/**
* Check whether the given CharSequence contains any whitespace characters.
* @param str the CharSequence to check (may be {@code null})
* @return {@code true} if the CharSequence is not empty and
* contains at least 1 whitespace character
* @see Character#isWhitespace
*/
public static boolean containsWhitespace(CharSequence str) {
if (!hasLength(str)) {
return false;
}
int strLen = str.length();
for (int i = 0; i < strLen; i++) {
if (Character.isWhitespace(str.charAt(i))) {
return true;
}
}
return false;
}
/**
* Check whether the given String contains any whitespace characters.
* @param str the String to check (may be {@code null})
* @return {@code true} if the String is not empty and
* contains at least 1 whitespace character
* @see #containsWhitespace(CharSequence)
*/
public static boolean containsWhitespace(String str) {
return containsWhitespace((CharSequence) str);
}
/**
* Trim leading and trailing whitespace from the given String.
* @param str the String to check
* @return the trimmed String
* @see java.lang.Character#isWhitespace
*/
public static String trimWhitespace(String str) {
if (!hasLength(str)) {
return str;
}
StringBuilder sb = new StringBuilder(str);
while (sb.length() > 0 && Character.isWhitespace(sb.charAt(0))) {
sb.deleteCharAt(0);
}
while (sb.length() > 0 && Character.isWhitespace(sb.charAt(sb.length() - 1))) {
sb.deleteCharAt(sb.length() - 1);
}
return sb.toString();
}
/**
* Trim all whitespace from the given String:
* leading, trailing, and in between characters.
* @param str the String to check
* @return the trimmed String
* @see java.lang.Character#isWhitespace
*/
public static String trimAllWhitespace(String str) {
if (!hasLength(str)) {
return str;
}
int len = str.length();
StringBuilder sb = new StringBuilder(str.length());
for (int i = 0; i < len; i++) {
char c = str.charAt(i);
if (!Character.isWhitespace(c)) {
sb.append(c);
}
}
return sb.toString();
}
/**
* Trim leading whitespace from the given String.
* @param str the String to check
* @return the trimmed String
* @see java.lang.Character#isWhitespace
*/
public static String trimLeadingWhitespace(String str) {
if (!hasLength(str)) {
return str;
}
StringBuilder sb = new StringBuilder(str);
while (sb.length() > 0 && Character.isWhitespace(sb.charAt(0))) {
sb.deleteCharAt(0);
}
return sb.toString();
}
/**
* Trim trailing whitespace from the given String.
* @param str the String to check
* @return the trimmed String
* @see java.lang.Character#isWhitespace
*/
public static String trimTrailingWhitespace(String str) {
if (!hasLength(str)) {
return str;
}
StringBuilder sb = new StringBuilder(str);
while (sb.length() > 0 && Character.isWhitespace(sb.charAt(sb.length() - 1))) {
sb.deleteCharAt(sb.length() - 1);
}
return sb.toString();
}
/**
* Trim all occurrences of the supplied leading character from the given String.
* @param str the String to check
* @param leadingCharacter the leading character to be trimmed
* @return the trimmed String
*/
public static String trimLeadingCharacter(String str, char leadingCharacter) {
if (!hasLength(str)) {
return str;
}
StringBuilder sb = new StringBuilder(str);
while (sb.length() > 0 && sb.charAt(0) == leadingCharacter) {
sb.deleteCharAt(0);
}
return sb.toString();
}
/**
* Trim all occurrences of the supplied trailing character from the given String.
* @param str the String to check
* @param trailingCharacter the trailing character to be trimmed
* @return the trimmed String
*/
public static String trimTrailingCharacter(String str, char trailingCharacter) {
if (!hasLength(str)) {
return str;
}
StringBuilder sb = new StringBuilder(str);
while (sb.length() > 0 && sb.charAt(sb.length() - 1) == trailingCharacter) {
sb.deleteCharAt(sb.length() - 1);
}
return sb.toString();
}
/**
* Test if the given String starts with the specified prefix,
* ignoring upper/lower case.
* @param str the String to check
* @param prefix the prefix to look for
* @see java.lang.String#startsWith
*/
public static boolean startsWithIgnoreCase(String str, String prefix) {
if (str == null || prefix == null) {
return false;
}
if (str.startsWith(prefix)) {
return true;
}
if (str.length() < prefix.length()) {
return false;
}
String lcStr = str.substring(0, prefix.length()).toLowerCase();
String lcPrefix = prefix.toLowerCase();
return lcStr.equals(lcPrefix);
}
/**
* Test if the given String ends with the specified suffix,
* ignoring upper/lower case.
* @param str the String to check
* @param suffix the suffix to look for
* @see java.lang.String#endsWith
*/
public static boolean endsWithIgnoreCase(String str, String suffix) {
if (str == null || suffix == null) {
return false;
}
if (str.endsWith(suffix)) {
return true;
}
if (str.length() < suffix.length()) {
return false;
}
String lcStr = str.substring(str.length() - suffix.length()).toLowerCase();
String lcSuffix = suffix.toLowerCase();
return lcStr.equals(lcSuffix);
}
/**
* Test whether the given string matches the given substring
* at the given index.
* @param str the original string (or StringBuilder)
* @param index the index in the original string to start matching against
* @param substring the substring to match at the given index
*/
public static boolean substringMatch(CharSequence str, int index, CharSequence substring) {
for (int j = 0; j < substring.length(); j++) {
int i = index + j;
if (i >= str.length() || str.charAt(i) != substring.charAt(j)) {
return false;
}
}
return true;
}
/**
* Count the occurrences of the substring in string s.
* @param str string to search in. Return 0 if this is null.
* @param sub string to search for. Return 0 if this is null.
*/
public static int countOccurrencesOf(String str, String sub) {
if (str == null || sub == null || str.length() == 0 || sub.length() == 0) {
return 0;
}
int count = 0;
int pos = 0;
int idx;
while ((idx = str.indexOf(sub, pos)) != -1) {
++count;
pos = idx + sub.length();
}
return count;
}
/**
* Replace all occurrences of a substring within a string with
* another string.
* @param inString String to examine
* @param oldPattern String to replace
* @param newPattern String to insert
* @return a String with the replacements
*/
public static String replace(String inString, String oldPattern, String newPattern) {
if (!hasLength(inString) || !hasLength(oldPattern) || newPattern == null) {
return inString;
}
StringBuilder sb = new StringBuilder();
int pos = 0; // our position in the old string
int index = inString.indexOf(oldPattern);
// the index of an occurrence we've found, or -1
int patLen = oldPattern.length();
while (index >= 0) {
sb.append(inString.substring(pos, index));
sb.append(newPattern);
pos = index + patLen;
index = inString.indexOf(oldPattern, pos);
}
sb.append(inString.substring(pos));
// remember to append any characters to the right of a match
return sb.toString();
}
/**
* Delete all occurrences of the given substring.
* @param inString the original String
* @param pattern the pattern to delete all occurrences of
* @return the resulting String
*/
public static String delete(String inString, String pattern) {
return replace(inString, pattern, "");
}
/**
* Delete any character in a given String.
* @param inString the original String
* @param charsToDelete a set of characters to delete.
* E.g. "az\n" will delete 'a's, 'z's and new lines.
* @return the resulting String
*/
public static String deleteAny(String inString, String charsToDelete) {
if (!hasLength(inString) || !hasLength(charsToDelete)) {
return inString;
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < inString.length(); i++) {
char c = inString.charAt(i);
if (charsToDelete.indexOf(c) == -1) {
sb.append(c);
}
}
return sb.toString();
}
//---------------------------------------------------------------------
// Convenience methods for working with formatted Strings
//---------------------------------------------------------------------
/**
* Unqualify a string qualified by a '.' dot character. For example,
* "this.name.is.qualified", returns "qualified".
* @param qualifiedName the qualified name
*/
public static String unqualify(String qualifiedName) {
return unqualify(qualifiedName, '.');
}
/**
* Unqualify a string qualified by a separator character. For example,
* "this:name:is:qualified" returns "qualified" if using a ':' separator.
* @param qualifiedName the qualified name
* @param separator the separator
*/
public static String unqualify(String qualifiedName, char separator) {
return qualifiedName.substring(qualifiedName.lastIndexOf(separator) + 1);
}
/**
* Capitalize a {@code String}, changing the first letter to
* upper case as per {@link Character#toUpperCase(char)}.
* No other letters are changed.
* @param str the String to capitalize, may be {@code null}
* @return the capitalized String, {@code null} if null
*/
public static String capitalize(String str) {
return changeFirstCharacterCase(str, true);
}
/**
* Uncapitalize a {@code String}, changing the first letter to
* lower case as per {@link Character#toLowerCase(char)}.
* No other letters are changed.
* @param str the String to uncapitalize, may be {@code null}
* @return the uncapitalized String, {@code null} if null
*/
public static String uncapitalize(String str) {
return changeFirstCharacterCase(str, false);
}
private static String changeFirstCharacterCase(String str, boolean capitalize) {
if (str == null || str.length() == 0) {
return str;
}
StringBuilder sb = new StringBuilder(str.length());
if (capitalize) {
sb.append(Character.toUpperCase(str.charAt(0)));
}
else {
sb.append(Character.toLowerCase(str.charAt(0)));
}
sb.append(str.substring(1));
return sb.toString();
}
/**
* Extract the filename from the given path,
* e.g. "mypath/myfile.txt" -> "myfile.txt".
* @param path the file path (may be {@code null})
* @return the extracted filename, or {@code null} if none
*/
public static String getFilename(String path) {
if (path == null) {
return null;
}
int separatorIndex = path.lastIndexOf(FOLDER_SEPARATOR);
return (separatorIndex != -1 ? path.substring(separatorIndex + 1) : path);
}
/**
* Extract the filename extension from the given path,
* e.g. "mypath/myfile.txt" -> "txt".
* @param path the file path (may be {@code null})
* @return the extracted filename extension, or {@code null} if none
*/
public static String getFilenameExtension(String path) {
if (path == null) {
return null;
}
int extIndex = path.lastIndexOf(EXTENSION_SEPARATOR);
if (extIndex == -1) {
return null;
}
int folderIndex = path.lastIndexOf(FOLDER_SEPARATOR);
if (folderIndex > extIndex) {
return null;
}
return path.substring(extIndex + 1);
}
/**
* Strip the filename extension from the given path,
* e.g. "mypath/myfile.txt" -> "mypath/myfile".
* @param path the file path (may be {@code null})
* @return the path with stripped filename extension,
* or {@code null} if none
*/
public static String stripFilenameExtension(String path) {
if (path == null) {
return null;
}
int extIndex = path.lastIndexOf(EXTENSION_SEPARATOR);
if (extIndex == -1) {
return path;
}
int folderIndex = path.lastIndexOf(FOLDER_SEPARATOR);
if (folderIndex > extIndex) {
return path;
}
return path.substring(0, extIndex);
}
/**
* Apply the given relative path to the given path,
* assuming standard Java folder separation (i.e. "/" separators).
* @param path the path to start from (usually a full file path)
* @param relativePath the relative path to apply
* (relative to the full file path above)
* @return the full file path that results from applying the relative path
*/
public static String applyRelativePath(String path, String relativePath) {
int separatorIndex = path.lastIndexOf(FOLDER_SEPARATOR);
if (separatorIndex != -1) {
String newPath = path.substring(0, separatorIndex);
if (!relativePath.startsWith(FOLDER_SEPARATOR)) {
newPath += FOLDER_SEPARATOR;
}
return newPath + relativePath;
}
else {
return relativePath;
}
}
/**
* Normalize the path by suppressing sequences like "path/.." and
* inner simple dots.
* The result is convenient for path comparison. For other uses,
* notice that Windows separators ("\") are replaced by simple slashes.
* @param path the original path
* @return the normalized path
*/
public static String cleanPath(String path) {
if (path == null) {
return null;
}
String pathToUse = replace(path, WINDOWS_FOLDER_SEPARATOR, FOLDER_SEPARATOR);
// Strip prefix from path to analyze, to not treat it as part of the
// first path element. This is necessary to correctly parse paths like
// "file:core/../core/io/Resource.class", where the ".." should just
// strip the first "core" directory while keeping the "file:" prefix.
int prefixIndex = pathToUse.indexOf(":");
String prefix = "";
if (prefixIndex != -1) {
prefix = pathToUse.substring(0, prefixIndex + 1);
if (prefix.contains("/")) {
prefix = "";
}
else {
pathToUse = pathToUse.substring(prefixIndex + 1);
}
}
if (pathToUse.startsWith(FOLDER_SEPARATOR)) {
prefix = prefix + FOLDER_SEPARATOR;
pathToUse = pathToUse.substring(1);
}
String[] pathArray = delimitedListToStringArray(pathToUse, FOLDER_SEPARATOR);
List pathElements = new LinkedList();
int tops = 0;
for (int i = pathArray.length - 1; i >= 0; i--) {
String element = pathArray[i];
if (CURRENT_PATH.equals(element)) {
// Points to current directory - drop it.
}
else if (TOP_PATH.equals(element)) {
// Registering top path found.
tops++;
}
else {
if (tops > 0) {
// Merging path element with element corresponding to top path.
tops--;
}
else {
// Normal path element found.
pathElements.add(0, element);
}
}
}
// Remaining top paths need to be retained.
for (int i = 0; i < tops; i++) {
pathElements.add(0, TOP_PATH);
}
return prefix + collectionToDelimitedString(pathElements, FOLDER_SEPARATOR);
}
/**
* Compare two paths after normalization of them.
* @param path1 first path for comparison
* @param path2 second path for comparison
* @return whether the two paths are equivalent after normalization
*/
public static boolean pathEquals(String path1, String path2) {
return cleanPath(path1).equals(cleanPath(path2));
}
/**
* Parse the given {@code localeString} value into a {@link Locale}.
* This is the inverse operation of {@link Locale#toString Locale's toString}.
* @param localeString the locale String, following {@code Locale's}
* {@code toString()} format ("en", "en_UK", etc);
* also accepts spaces as separators, as an alternative to underscores
* @return a corresponding {@code Locale} instance
* @throws IllegalArgumentException in case of an invalid locale specification
*/
public static Locale parseLocaleString(String localeString) {
String[] parts = tokenizeToStringArray(localeString, "_ ", false, false);
String language = (parts.length > 0 ? parts[0] : "");
String country = (parts.length > 1 ? parts[1] : "");
validateLocalePart(language);
validateLocalePart(country);
String variant = "";
if (parts.length > 2) {
// There is definitely a variant, and it is everything after the country
// code sans the separator between the country code and the variant.
int endIndexOfCountryCode = localeString.indexOf(country, language.length()) + country.length();
// Strip off any leading '_' and whitespace, what's left is the variant.
variant = trimLeadingWhitespace(localeString.substring(endIndexOfCountryCode));
if (variant.startsWith("_")) {
variant = trimLeadingCharacter(variant, '_');
}
}
return (language.length() > 0 ? new Locale(language, country, variant) : null);
}
private static void validateLocalePart(String localePart) {
for (int i = 0; i < localePart.length(); i++) {
char ch = localePart.charAt(i);
if (ch != '_' && ch != ' ' && !Character.isLetterOrDigit(ch)) {
throw new IllegalArgumentException(
"Locale part \"" + localePart + "\" contains invalid characters");
}
}
}
/**
* Determine the RFC 3066 compliant language tag,
* as used for the HTTP "Accept-Language" header.
* @param locale the Locale to transform to a language tag
* @return the RFC 3066 compliant language tag as String
*/
public static String toLanguageTag(Locale locale) {
return locale.getLanguage() + (hasText(locale.getCountry()) ? "-" + locale.getCountry() : "");
}
/**
* Parse the given {@code timeZoneString} value into a {@link TimeZone}.
* @param timeZoneString the time zone String, following {@link TimeZone#getTimeZone(String)}
* but throwing {@link IllegalArgumentException} in case of an invalid time zone specification
* @return a corresponding {@link TimeZone} instance
* @throws IllegalArgumentException in case of an invalid time zone specification
*/
public static TimeZone parseTimeZoneString(String timeZoneString) {
TimeZone timeZone = TimeZone.getTimeZone(timeZoneString);
if ("GMT".equals(timeZone.getID()) && !timeZoneString.startsWith("GMT")) {
// We don't want that GMT fallback...
throw new IllegalArgumentException("Invalid time zone specification '" + timeZoneString + "'");
}
return timeZone;
}
//---------------------------------------------------------------------
// Convenience methods for working with String arrays
//---------------------------------------------------------------------
/**
* Append the given String to the given String array, returning a new array
* consisting of the input array contents plus the given String.
* @param array the array to append to (can be {@code null})
* @param str the String to append
* @return the new array (never {@code null})
*/
public static String[] addStringToArray(String[] array, String str) {
if (ObjectUtils.isEmpty(array)) {
return new String[] {str};
}
String[] newArr = new String[array.length + 1];
System.arraycopy(array, 0, newArr, 0, array.length);
newArr[array.length] = str;
return newArr;
}
/**
* Concatenate the given String arrays into one,
* with overlapping array elements included twice.
*
The order of elements in the original arrays is preserved.
* @param array1 the first array (can be {@code null})
* @param array2 the second array (can be {@code null})
* @return the new array ({@code null} if both given arrays were {@code null})
*/
public static String[] concatenateStringArrays(String[] array1, String[] array2) {
if (ObjectUtils.isEmpty(array1)) {
return array2;
}
if (ObjectUtils.isEmpty(array2)) {
return array1;
}
String[] newArr = new String[array1.length + array2.length];
System.arraycopy(array1, 0, newArr, 0, array1.length);
System.arraycopy(array2, 0, newArr, array1.length, array2.length);
return newArr;
}
/**
* Merge the given String arrays into one, with overlapping
* array elements only included once.
*
The order of elements in the original arrays is preserved
* (with the exception of overlapping elements, which are only
* included on their first occurrence).
* @param array1 the first array (can be {@code null})
* @param array2 the second array (can be {@code null})
* @return the new array ({@code null} if both given arrays were {@code null})
*/
public static String[] mergeStringArrays(String[] array1, String[] array2) {
if (ObjectUtils.isEmpty(array1)) {
return array2;
}
if (ObjectUtils.isEmpty(array2)) {
return array1;
}
List result = new ArrayList();
result.addAll(Arrays.asList(array1));
for (String str : array2) {
if (!result.contains(str)) {
result.add(str);
}
}
return toStringArray(result);
}
/**
* Turn given source String array into sorted array.
* @param array the source array
* @return the sorted array (never {@code null})
*/
public static String[] sortStringArray(String[] array) {
if (ObjectUtils.isEmpty(array)) {
return new String[0];
}
Arrays.sort(array);
return array;
}
/**
* Copy the given Collection into a String array.
* The Collection must contain String elements only.
* @param collection the Collection to copy
* @return the String array ({@code null} if the passed-in
* Collection was {@code null})
*/
public static String[] toStringArray(Collection collection) {
if (collection == null) {
return null;
}
return collection.toArray(new String[collection.size()]);
}
/**
* Copy the given Enumeration into a String array.
* The Enumeration must contain String elements only.
* @param enumeration the Enumeration to copy
* @return the String array ({@code null} if the passed-in
* Enumeration was {@code null})
*/
public static String[] toStringArray(Enumeration enumeration) {
if (enumeration == null) {
return null;
}
List list = Collections.list(enumeration);
return list.toArray(new String[list.size()]);
}
/**
* Trim the elements of the given String array,
* calling {@code String.trim()} on each of them.
* @param array the original String array
* @return the resulting array (of the same size) with trimmed elements
*/
public static String[] trimArrayElements(String[] array) {
if (ObjectUtils.isEmpty(array)) {
return new String[0];
}
String[] result = new String[array.length];
for (int i = 0; i < array.length; i++) {
String element = array[i];
result[i] = (element != null ? element.trim() : null);
}
return result;
}
/**
* Remove duplicate Strings from the given array.
* Also sorts the array, as it uses a TreeSet.
* @param array the String array
* @return an array without duplicates, in natural sort order
*/
public static String[] removeDuplicateStrings(String[] array) {
if (ObjectUtils.isEmpty(array)) {
return array;
}
Set set = new TreeSet();
for (String element : array) {
set.add(element);
}
return toStringArray(set);
}
/**
* Take an array Strings and split each element based on the given delimiter.
* A {@code Properties} instance is then generated, with the left of the
* delimiter providing the key, and the right of the delimiter providing the value.
* Will trim both the key and value before adding them to the
* {@code Properties} instance.
* @param array the array to process
* @param delimiter to split each element using (typically the equals symbol)
* @return a {@code Properties} instance representing the array contents,
* or {@code null} if the array to process was null or empty
*/
public static Properties splitArrayElementsIntoProperties(String[] array, String delimiter) {
return splitArrayElementsIntoProperties(array, delimiter, null);
}
/**
* Take an array Strings and split each element based on the given delimiter.
* A {@code Properties} instance is then generated, with the left of the
* delimiter providing the key, and the right of the delimiter providing the value.
*
Will trim both the key and value before adding them to the
* {@code Properties} instance.
* @param array the array to process
* @param delimiter to split each element using (typically the equals symbol)
* @param charsToDelete one or more characters to remove from each element
* prior to attempting the split operation (typically the quotation mark
* symbol), or {@code null} if no removal should occur
* @return a {@code Properties} instance representing the array contents,
* or {@code null} if the array to process was {@code null} or empty
*/
public static Properties splitArrayElementsIntoProperties(
String[] array, String delimiter, String charsToDelete) {
if (ObjectUtils.isEmpty(array)) {
return null;
}
Properties result = new Properties();
for (String element : array) {
if (charsToDelete != null) {
element = deleteAny(element, charsToDelete);
}
String[] splittedElement = split(element, delimiter);
if (splittedElement == null) {
continue;
}
result.setProperty(splittedElement[0].trim(), splittedElement[1].trim());
}
return result;
}
/**
*
* @description ：获得以 ",; \t\n"分割的字符数组
* @author ： vindell
* @date ：Dec 17, 2015 9:07:47 PM
* @param str
* @return
*/
public static String[] tokenizeToStringArray(String str) {
return tokenizeToStringArray(str, CONFIG_LOCATION_DELIMITERS, true, true);
}
/**
* Tokenize the given String into a String array via a StringTokenizer.
* Trims tokens and omits empty tokens.
*
The given delimiters string is supposed to consist of any number of
* delimiter characters. Each of those characters can be used to separate
* tokens. A delimiter is always a single character; for multi-character
* delimiters, consider using {@code delimitedListToStringArray}
* @param str the String to tokenize
* @param delimiters the delimiter characters, assembled as String
* (each of those characters is individually considered as delimiter).
* @return an array of the tokens
* @see java.util.StringTokenizer
* @see String#trim()
* @see #delimitedListToStringArray
*/
public static String[] tokenizeToStringArray(String str, String delimiters) {
return tokenizeToStringArray(str, delimiters, true, true);
}
/**
* Tokenize the given String into a String array via a StringTokenizer.
*
The given delimiters string is supposed to consist of any number of
* delimiter characters. Each of those characters can be used to separate
* tokens. A delimiter is always a single character; for multi-character
* delimiters, consider using {@code delimitedListToStringArray}
* @param str the String to tokenize
* @param delimiters the delimiter characters, assembled as String
* (each of those characters is individually considered as delimiter)
* @param trimTokens trim the tokens via String's {@code trim}
* @param ignoreEmptyTokens omit empty tokens from the result array
* (only applies to tokens that are empty after trimming; StringTokenizer
* will not consider subsequent delimiters as token in the first place).
* @return an array of the tokens ({@code null} if the input String
* was {@code null})
* @see java.util.StringTokenizer
* @see String#trim()
* @see #delimitedListToStringArray
*/
public static String[] tokenizeToStringArray(
String str, String delimiters, boolean trimTokens, boolean ignoreEmptyTokens) {
if (str == null) {
return null;
}
StringTokenizer st = new StringTokenizer(str, delimiters);
List tokens = new ArrayList();
while (st.hasMoreTokens()) {
String token = st.nextToken();
if (trimTokens) {
token = token.trim();
}
if (!ignoreEmptyTokens || token.length() > 0) {
tokens.add(token);
}
}
return toStringArray(tokens);
}
/**
* Take a String which is a delimited list and convert it to a String array.
* A single delimiter can consists of more than one character: It will still
* be considered as single delimiter string, rather than as bunch of potential
* delimiter characters - in contrast to {@code tokenizeToStringArray}.
* @param str the input String
* @param delimiter the delimiter between elements (this is a single delimiter,
* rather than a bunch individual delimiter characters)
* @return an array of the tokens in the list
* @see #tokenizeToStringArray
*/
public static String[] delimitedListToStringArray(String str, String delimiter) {
return delimitedListToStringArray(str, delimiter, null);
}
/**
* Take a String which is a delimited list and convert it to a String array.
*
A single delimiter can consists of more than one character: It will still
* be considered as single delimiter string, rather than as bunch of potential
* delimiter characters - in contrast to {@code tokenizeToStringArray}.
* @param str the input String
* @param delimiter the delimiter between elements (this is a single delimiter,
* rather than a bunch individual delimiter characters)
* @param charsToDelete a set of characters to delete. Useful for deleting unwanted
* line breaks: e.g. "\r\n\f" will delete all new lines and line feeds in a String.
* @return an array of the tokens in the list
* @see #tokenizeToStringArray
*/
public static String[] delimitedListToStringArray(String str, String delimiter, String charsToDelete) {
if (str == null) {
return new String[0];
}
if (delimiter == null) {
return new String[] {str};
}
List result = new ArrayList();
if ("".equals(delimiter)) {
for (int i = 0; i < str.length(); i++) {
result.add(deleteAny(str.substring(i, i + 1), charsToDelete));
}
}
else {
int pos = 0;
int delPos;
while ((delPos = str.indexOf(delimiter, pos)) != -1) {
result.add(deleteAny(str.substring(pos, delPos), charsToDelete));
pos = delPos + delimiter.length();
}
if (str.length() > 0 && pos <= str.length()) {
// Add rest of String, but not in case of empty input.
result.add(deleteAny(str.substring(pos), charsToDelete));
}
}
return toStringArray(result);
}
/**
* Convert a CSV list into an array of Strings.
* @param str the input String
* @return an array of Strings, or the empty array in case of empty input
*/
public static String[] commaDelimitedListToStringArray(String str) {
return delimitedListToStringArray(str, ",");
}
/**
* Convenience method to convert a CSV string list to a set.
* Note that this will suppress duplicates.
* @param str the input String
* @return a Set of String entries in the list
*/
public static Set commaDelimitedListToSet(String str) {
Set set = new TreeSet();
String[] tokens = commaDelimitedListToStringArray(str);
for (String token : tokens) {
set.add(token);
}
return set;
}
/**
* Convenience method to return a Collection as a delimited (e.g. CSV)
* String. E.g. useful for {@code toString()} implementations.
* @param coll the Collection to display
* @param delim the delimiter to use (probably a ",")
* @param prefix the String to start each element with
* @param suffix the String to end each element with
* @return the delimited String
*/
public static String collectionToDelimitedString(Collection coll, String delim, String prefix, String suffix) {
if (CollectionUtils.isEmpty(coll)) {
return "";
}
StringBuilder sb = new StringBuilder();
Iterator it = coll.iterator();
while (it.hasNext()) {
sb.append(prefix).append(it.next()).append(suffix);
if (it.hasNext()) {
sb.append(delim);
}
}
return sb.toString();
}
/**
* Convenience method to return a Collection as a delimited (e.g. CSV)
* String. E.g. useful for {@code toString()} implementations.
* @param coll the Collection to display
* @param delim the delimiter to use (probably a ",")
* @return the delimited String
*/
public static String collectionToDelimitedString(Collection coll, String delim) {
return collectionToDelimitedString(coll, delim, "", "");
}
/**
* Convenience method to return a Collection as a CSV String.
* E.g. useful for {@code toString()} implementations.
* @param coll the Collection to display
* @return the delimited String
*/
public static String collectionToCommaDelimitedString(Collection coll) {
return collectionToDelimitedString(coll, ",");
}
/**
* Convenience method to return a String array as a delimited (e.g. CSV)
* String. E.g. useful for {@code toString()} implementations.
* @param arr the array to display
* @param delim the delimiter to use (probably a ",")
* @return the delimited String
*/
public static String arrayToDelimitedString(Object[] arr, String delim) {
if (ObjectUtils.isEmpty(arr)) {
return "";
}
if (arr.length == 1) {
return ObjectUtils.nullSafeToString(arr[0]);
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < arr.length; i++) {
if (i > 0) {
sb.append(delim);
}
sb.append(arr[i]);
}
return sb.toString();
}
/**
* Convenience method to return a String array as a CSV String.
* E.g. useful for {@code toString()} implementations.
* @param arr the array to display
* @return the delimited String
*/
public static String arrayToCommaDelimitedString(Object[] arr) {
return arrayToDelimitedString(arr, ",");
}
/**
* 生成查询字串Map
*
* @param str
* @return
*/
public static Map getMapFromQueryParamString(String str) {
Map param = new HashMap();
String keyValues[] = str.split("`");
for (int i = 0; i < keyValues.length; i++) {
}
return param;
}
/**
* 全替换
*
* @param src
* 替换字串
* @param tar
* 替换目标
* @param str
* 主字串
* @return
*/
public static String replaceAll(String src, String tar, String str) {
StringBuilder sb = new StringBuilder();
byte bytesSrc[] = src.getBytes();
byte bytes[] = str.getBytes();
int point = 0;
for (int i = 0; i < bytes.length; i++) {
if (isStartWith(bytes, i, bytesSrc, 0)) {
sb.append(new String(bytes, point, i));
sb.append(tar);
i += bytesSrc.length;
point = i;
}
}
sb.append(new String(bytes, point, bytes.length));
return sb.toString();
}
/**
*
* @param bytesSrc
* @param bytesTar
* @return
*/
private static boolean isStartWith(byte bytesSrc[], int startSrc,
byte bytesTar[], int startTar) {
for (int j = startTar; j < bytesTar.length; j++) {
if (bytesSrc[startSrc + j] != bytesTar[j]) {
return false;
}
}
return true;
}
/**
* 取中文拼音首字符
*
* @param str
* @return
*/
public static char getFirstLetterFromChinessWord(String str) {
char result = '*';
String temp = str.toUpperCase();
try {
byte[] bytes = temp.getBytes("gbk");
if (bytes[0] < 128 && bytes[0] > 0) {
return (char) bytes[0];
}
int gbkIndex = 0;
for (int i = 0; i < bytes.length; i++) {
bytes[i] -= 160;
}
gbkIndex = bytes[0] * 100 + bytes[1];
for (int i = 0; i < allEnglishLetter.length; i++) {
if (i == 22) {
// System.out.println(allEnglishLetter.length
// +" "+allChineseScope.length);
}
if (gbkIndex >= allChineseScope[i]
&& gbkIndex < allChineseScope[i + 1]) {
result = allEnglishLetter[i];
break;
}
}
} catch (Exception e) {
}
return result;
}
/**
* 字串分割
*
* @param src
* @param letter
* @return
*/
public static String[] split(String src, char letter) {
if (src == null) {
return new String[0];
}
List ret = new ArrayList();
byte bytes[] = src.getBytes();
int curPoint = 0;
for (int i = 0; i < bytes.length; i++) {
if (bytes[i] == letter) {
String s = new String(bytes, curPoint, i - curPoint);
ret.add(s);
curPoint = i + 1;
}
}
if (ret.size() == 0) {
return new String[] { src };
}
// ret.add(new String(bytes, curPoint, src.length() - curPoint));
String[] retStr = new String[ret.size()];
for (int i = 0; i < ret.size(); i++) {
retStr[i] = ret.get(i);
}
return retStr;
}
/**
* Split a String at the first occurrence of the delimiter.
* Does not include the delimiter in the result.
* @param toSplit the string to split
* @param delimiter to split the string up with
* @return a two element array with index 0 being before the delimiter, and
* index 1 being after the delimiter (neither element includes the delimiter);
* or {@code null} if the delimiter wasn't found in the given input String
*/
public static String[] split(String toSplit, String delimiter) {
if (!hasLength(toSplit) || !hasLength(delimiter)) {
return null;
}
int offset = toSplit.indexOf(delimiter);
if (offset < 0) {
return null;
}
String beforeDelimiter = toSplit.substring(0, offset);
String afterDelimiter = toSplit.substring(offset + delimiter.length());
return new String[] {beforeDelimiter, afterDelimiter};
}
public static String[] splits(String toSplit, String regex) {
if (!hasLength(toSplit) || !hasLength(regex)) {
return new String[] {};
}
return toSplit.split(regex);
}
/**
* 去除最后一个字符
*
* @param str
* @return
*/
public static String removeLast(String str) {
if (isNull(str)) {
return str;
}
return str.substring(0, str.length() - 1);
}
/**
* 为字符串的每个元素增加单引号，供sql语句调用 如字符串"123,567"变成"'123','567'"
*
* @param str
* @return
*/
public static String addQuotation(String str) {
if (str == null) {
return null;
}
String newStr = "";
String[] strs = split(str, ",");
for (int i = 0; i < strs.length; i++) {
if (i > 0) {
newStr += ",";
}
newStr += "'" + strs[i] + "'";
}
return newStr;
}
/**
* list转string数组
*
* @param list
* @return String[]
*/
public static String[] listToArray(List list) {
String[] strs = new String[list.size()];
return list.toArray(strs);
}
/**
* list转string字符串,以符号分隔
*
* @param list
* @param separator
* @return String
*/
public static String listToString(List list, String separator) {
return StringUtils.join(listToArray(list), separator);
}
/**
* 生成随即密码
*
* @author 来自网上
* @param pwd_len
* 生成的密码的总长度
* @return 密码的字符串
*/
public static String genRandomNum(int pwd_len) {
// 36是因为数组是从0开始的，26个字母+10个数字 + 下划线
final int maxNum = 37;
int i; // 生成的随机数
int count = 0; // 生成的密码的长度
char[] str = { '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', '_' };
StringBuilder pwd = new StringBuilder("");
Random r = new Random();
while (count < pwd_len) {
// 生成随机数，取绝对值，防止生成负数，
i = Math.abs(r.nextInt(maxNum)); // 生成的数最大为36-1
if (i >= 0 && i < str.length) {
pwd.append(str[i]);
count++;
}
}
return pwd.toString();
}
/**
* 将传入字符串改为非NULL值.
*
* @param str
* @return 传入NULL,返回空"".
*/
public static String killNull(String str) {
if (str == null) {
return "";
}
return str;
}
/**
*
* @description: 圆括号()包裹
* @author : vindell
* @date : 2014-4-29
* @time : 下午03:11:57
* @param source
* @return
*/
public static String parentheses(String source) {
return (source != null ? "(" + source + ")" : null);
}
/**
*
* @description: 方括号[]包裹
* @author : vindell
* @date : 2014-4-29
* @time : 下午03:11:57
* @param source
* @return
*/
public static String brackets(String source) {
return (source != null ? "[" + source + "]" : null);
}
public static String ditto(String source) {
return (source != null ? "\"" + source + "\"" : null);
}
/**
* Quote the given String with single quotes.
*
* @param str
* the input String (e.g. "myString")
* @return the quoted String (e.g. "'myString'"), or
* null if the input was null
*/
public static String quote(String str) {
return (str != null ? "'" + str + "'" : null);
}
/**
*
* @description: 将String集合元素用'包围，并拼接
* @author : vindell
* @date : 2014-4-29
* @time : 下午02:13:09
* @param list
* @param separator
* @return
*/
public static String quote(String[] array, String separator) {
if (null != array && array.length != 0) {
String[] last = new String[array.length];
for (int i = 0; i < array.length; i++) {
last[i] = StringUtils.quote(array[i]);
}
return StringUtils.join(last, separator);
} else {
return "";
}
}
/**
* Turn the given Object into a String with single quotes if it is a String;
* keeping the Object as-is else.
*
* @param obj
* the input Object (e.g. "myString")
* @return the quoted String (e.g. "'myString'"), or the input object as-is
* if not a String
*/
public static Object quoteIfString(Object obj) {
return (obj instanceof String ? quote((String) obj) : obj);
}
/**
*
* @param string
* @return
* @description： 把一个字符的非Alpha字符都去掉,String string = "1\r\n1\r\n";-->结果："11";
* @return: String
* @method: trimToAlphaString
* @author: vindell
* @version: 2010-12-15 下午09:06:02
*/
public static String trimToAlphaString(String string) {
if (string == null || string.length() == 0) {
return "";
}
return string.replaceAll("[^\\w]", "");
}
/**
*
* @param string
* @return
* @description： 把一个字符的非Alpha字符都去掉，并返回每个字符的数组,String string =
* "1\r\n1\r\n";-->结果：new String[]{"1","1"};
*
* @return: String[]
* @method: trimToAlphaStrings
* @author: vindell
* @version: 2010-12-15 下午09:06:31
*/
public static String[] trimToAlphaStrings(String string) {
if (string == null || string.length() == 0) {
return new String[0];
}
char[] chars = string.replaceAll("[^\\w]", "").toCharArray();
String[] strs = new String[chars.length];
for (int i = 0; i < chars.length; i++) {
strs[i] = String.valueOf(chars[i]);
}
return strs;
}
public static String trimToString(String str) {
if (str == null || str.trim().length() == 0) {
return null;
} else {
return str.trim();
}
}
}