New file |
| | |
| | | package com.ruoyi.common.core.utils; |
| | | |
| | | import java.util.Collection; |
| | | import java.util.List; |
| | | import java.util.Map; |
| | | import org.springframework.util.AntPathMatcher; |
| | | import com.ruoyi.common.core.constant.Constants; |
| | | import com.ruoyi.common.core.text.StrFormatter; |
| | | |
| | | /** |
| | | * 字符串工具类 |
| | | * |
| | | * @author ruoyi |
| | | */ |
| | | public class StringUtils extends org.apache.commons.lang3.StringUtils |
| | | { |
| | | /** 空字符串 */ |
| | | private static final String NULLSTR = ""; |
| | | |
| | | /** 下划线 */ |
| | | private static final char SEPARATOR = '_'; |
| | | |
| | | /** |
| | | * 获取参数不为空值 |
| | | * |
| | | * @param value defaultValue 要判断的value |
| | | * @return value 返回值 |
| | | */ |
| | | public static <T> T nvl(T value, T defaultValue) |
| | | { |
| | | return value != null ? value : defaultValue; |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个Collection是否为空, 包含List,Set,Queue |
| | | * |
| | | * @param coll 要判断的Collection |
| | | * @return true:为空 false:非空 |
| | | */ |
| | | public static boolean isEmpty(Collection<?> coll) |
| | | { |
| | | return isNull(coll) || coll.isEmpty(); |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个Collection是否非空,包含List,Set,Queue |
| | | * |
| | | * @param coll 要判断的Collection |
| | | * @return true:非空 false:空 |
| | | */ |
| | | public static boolean isNotEmpty(Collection<?> coll) |
| | | { |
| | | return !isEmpty(coll); |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个对象数组是否为空 |
| | | * |
| | | * @param objects 要判断的对象数组 |
| | | ** @return true:为空 false:非空 |
| | | */ |
| | | public static boolean isEmpty(Object[] objects) |
| | | { |
| | | return isNull(objects) || (objects.length == 0); |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个对象数组是否非空 |
| | | * |
| | | * @param objects 要判断的对象数组 |
| | | * @return true:非空 false:空 |
| | | */ |
| | | public static boolean isNotEmpty(Object[] objects) |
| | | { |
| | | return !isEmpty(objects); |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个Map是否为空 |
| | | * |
| | | * @param map 要判断的Map |
| | | * @return true:为空 false:非空 |
| | | */ |
| | | public static boolean isEmpty(Map<?, ?> map) |
| | | { |
| | | return isNull(map) || map.isEmpty(); |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个Map是否为空 |
| | | * |
| | | * @param map 要判断的Map |
| | | * @return true:非空 false:空 |
| | | */ |
| | | public static boolean isNotEmpty(Map<?, ?> map) |
| | | { |
| | | return !isEmpty(map); |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个字符串是否为空串 |
| | | * |
| | | * @param str String |
| | | * @return true:为空 false:非空 |
| | | */ |
| | | public static boolean isEmpty(String str) |
| | | { |
| | | return isNull(str) || NULLSTR.equals(str.trim()); |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个字符串是否为非空串 |
| | | * |
| | | * @param str String |
| | | * @return true:非空串 false:空串 |
| | | */ |
| | | public static boolean isNotEmpty(String str) |
| | | { |
| | | return !isEmpty(str); |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个对象是否为空 |
| | | * |
| | | * @param object Object |
| | | * @return true:为空 false:非空 |
| | | */ |
| | | public static boolean isNull(Object object) |
| | | { |
| | | return object == null; |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个对象是否非空 |
| | | * |
| | | * @param object Object |
| | | * @return true:非空 false:空 |
| | | */ |
| | | public static boolean isNotNull(Object object) |
| | | { |
| | | return !isNull(object); |
| | | } |
| | | |
| | | /** |
| | | * * 判断一个对象是否是数组类型(Java基本型别的数组) |
| | | * |
| | | * @param object 对象 |
| | | * @return true:是数组 false:不是数组 |
| | | */ |
| | | public static boolean isArray(Object object) |
| | | { |
| | | return isNotNull(object) && object.getClass().isArray(); |
| | | } |
| | | |
| | | /** |
| | | * 去空格 |
| | | */ |
| | | public static String trim(String str) |
| | | { |
| | | return (str == null ? "" : str.trim()); |
| | | } |
| | | |
| | | /** |
| | | * 截取字符串 |
| | | * |
| | | * @param str 字符串 |
| | | * @param start 开始 |
| | | * @return 结果 |
| | | */ |
| | | public static String substring(final String str, int start) |
| | | { |
| | | if (str == null) |
| | | { |
| | | return NULLSTR; |
| | | } |
| | | |
| | | if (start < 0) |
| | | { |
| | | start = str.length() + start; |
| | | } |
| | | |
| | | if (start < 0) |
| | | { |
| | | start = 0; |
| | | } |
| | | if (start > str.length()) |
| | | { |
| | | return NULLSTR; |
| | | } |
| | | |
| | | return str.substring(start); |
| | | } |
| | | |
| | | /** |
| | | * 截取字符串 |
| | | * |
| | | * @param str 字符串 |
| | | * @param start 开始 |
| | | * @param end 结束 |
| | | * @return 结果 |
| | | */ |
| | | public static String substring(final String str, int start, int end) |
| | | { |
| | | if (str == null) |
| | | { |
| | | return NULLSTR; |
| | | } |
| | | |
| | | if (end < 0) |
| | | { |
| | | end = str.length() + end; |
| | | } |
| | | if (start < 0) |
| | | { |
| | | start = str.length() + start; |
| | | } |
| | | |
| | | if (end > str.length()) |
| | | { |
| | | end = str.length(); |
| | | } |
| | | |
| | | if (start > end) |
| | | { |
| | | return NULLSTR; |
| | | } |
| | | |
| | | if (start < 0) |
| | | { |
| | | start = 0; |
| | | } |
| | | if (end < 0) |
| | | { |
| | | end = 0; |
| | | } |
| | | |
| | | return str.substring(start, end); |
| | | } |
| | | |
| | | /** |
| | | * 判断是否为空,并且不是空白字符 |
| | | * |
| | | * @param str 要判断的value |
| | | * @return 结果 |
| | | */ |
| | | public static boolean hasText(String str) |
| | | { |
| | | return (str != null && !str.isEmpty() && containsText(str)); |
| | | } |
| | | |
| | | private static boolean containsText(CharSequence str) |
| | | { |
| | | int strLen = str.length(); |
| | | for (int i = 0; i < strLen; i++) |
| | | { |
| | | if (!Character.isWhitespace(str.charAt(i))) |
| | | { |
| | | return true; |
| | | } |
| | | } |
| | | return false; |
| | | } |
| | | |
| | | /** |
| | | * 格式化文本, {} 表示占位符<br> |
| | | * 此方法只是简单将占位符 {} 按照顺序替换为参数<br> |
| | | * 如果想输出 {} 使用 \\转义 { 即可,如果想输出 {} 之前的 \ 使用双转义符 \\\\ 即可<br> |
| | | * 例:<br> |
| | | * 通常使用:format("this is {} for {}", "a", "b") -> this is a for b<br> |
| | | * 转义{}: format("this is \\{} for {}", "a", "b") -> this is \{} for a<br> |
| | | * 转义\: format("this is \\\\{} for {}", "a", "b") -> this is \a for b<br> |
| | | * |
| | | * @param template 文本模板,被替换的部分用 {} 表示 |
| | | * @param params 参数值 |
| | | * @return 格式化后的文本 |
| | | */ |
| | | public static String format(String template, Object... params) |
| | | { |
| | | if (isEmpty(params) || isEmpty(template)) |
| | | { |
| | | return template; |
| | | } |
| | | return StrFormatter.format(template, params); |
| | | } |
| | | |
| | | /** |
| | | * 是否为http(s)://开头 |
| | | * |
| | | * @param link 链接 |
| | | * @return 结果 |
| | | */ |
| | | public static boolean ishttp(String link) |
| | | { |
| | | return StringUtils.startsWithAny(link, Constants.HTTP, Constants.HTTPS); |
| | | } |
| | | |
| | | /** |
| | | * 判断给定的collection列表中是否包含数组array 判断给定的数组array中是否包含给定的元素value |
| | | * |
| | | * @param collection 给定的集合 |
| | | * @param array 给定的数组 |
| | | * @return boolean 结果 |
| | | */ |
| | | public static boolean containsAny(Collection<String> collection, String... array) |
| | | { |
| | | if (isEmpty(collection) || isEmpty(array)) |
| | | { |
| | | return false; |
| | | } |
| | | else |
| | | { |
| | | for (String str : array) |
| | | { |
| | | if (collection.contains(str)) |
| | | { |
| | | return true; |
| | | } |
| | | } |
| | | return false; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * 驼峰转下划线命名 |
| | | */ |
| | | public static String toUnderScoreCase(String str) |
| | | { |
| | | if (str == null) |
| | | { |
| | | return null; |
| | | } |
| | | StringBuilder sb = new StringBuilder(); |
| | | // 前置字符是否大写 |
| | | boolean preCharIsUpperCase = true; |
| | | // 当前字符是否大写 |
| | | boolean curreCharIsUpperCase = true; |
| | | // 下一字符是否大写 |
| | | boolean nexteCharIsUpperCase = true; |
| | | for (int i = 0; i < str.length(); i++) |
| | | { |
| | | char c = str.charAt(i); |
| | | if (i > 0) |
| | | { |
| | | preCharIsUpperCase = Character.isUpperCase(str.charAt(i - 1)); |
| | | } |
| | | else |
| | | { |
| | | preCharIsUpperCase = false; |
| | | } |
| | | |
| | | curreCharIsUpperCase = Character.isUpperCase(c); |
| | | |
| | | if (i < (str.length() - 1)) |
| | | { |
| | | nexteCharIsUpperCase = Character.isUpperCase(str.charAt(i + 1)); |
| | | } |
| | | |
| | | if (preCharIsUpperCase && curreCharIsUpperCase && !nexteCharIsUpperCase) |
| | | { |
| | | sb.append(SEPARATOR); |
| | | } |
| | | else if ((i != 0 && !preCharIsUpperCase) && curreCharIsUpperCase) |
| | | { |
| | | sb.append(SEPARATOR); |
| | | } |
| | | sb.append(Character.toLowerCase(c)); |
| | | } |
| | | |
| | | return sb.toString(); |
| | | } |
| | | |
| | | /** |
| | | * 是否包含字符串 |
| | | * |
| | | * @param str 验证字符串 |
| | | * @param strs 字符串组 |
| | | * @return 包含返回true |
| | | */ |
| | | public static boolean inStringIgnoreCase(String str, String... strs) |
| | | { |
| | | if (str != null && strs != null) |
| | | { |
| | | for (String s : strs) |
| | | { |
| | | if (str.equalsIgnoreCase(trim(s))) |
| | | { |
| | | return true; |
| | | } |
| | | } |
| | | } |
| | | return false; |
| | | } |
| | | |
| | | /** |
| | | * 将下划线大写方式命名的字符串转换为驼峰式。如果转换前的下划线大写方式命名的字符串为空,则返回空字符串。 例如:HELLO_WORLD->HelloWorld |
| | | * |
| | | * @param name 转换前的下划线大写方式命名的字符串 |
| | | * @return 转换后的驼峰式命名的字符串 |
| | | */ |
| | | public static String convertToCamelCase(String name) |
| | | { |
| | | StringBuilder result = new StringBuilder(); |
| | | // 快速检查 |
| | | if (name == null || name.isEmpty()) |
| | | { |
| | | // 没必要转换 |
| | | return ""; |
| | | } |
| | | else if (!name.contains("_")) |
| | | { |
| | | // 不含下划线,仅将首字母大写 |
| | | return name.substring(0, 1).toUpperCase() + name.substring(1); |
| | | } |
| | | // 用下划线将原始字符串分割 |
| | | String[] camels = name.split("_"); |
| | | for (String camel : camels) |
| | | { |
| | | // 跳过原始字符串中开头、结尾的下换线或双重下划线 |
| | | if (camel.isEmpty()) |
| | | { |
| | | continue; |
| | | } |
| | | // 首字母大写 |
| | | result.append(camel.substring(0, 1).toUpperCase()); |
| | | result.append(camel.substring(1).toLowerCase()); |
| | | } |
| | | return result.toString(); |
| | | } |
| | | |
| | | /** |
| | | * 驼峰式命名法 |
| | | * 例如:user_name->userName |
| | | */ |
| | | public static String toCamelCase(String s) |
| | | { |
| | | if (s == null) |
| | | { |
| | | return null; |
| | | } |
| | | if (s.indexOf(SEPARATOR) == -1) |
| | | { |
| | | return s; |
| | | } |
| | | s = s.toLowerCase(); |
| | | StringBuilder sb = new StringBuilder(s.length()); |
| | | boolean upperCase = false; |
| | | for (int i = 0; i < s.length(); i++) |
| | | { |
| | | char c = s.charAt(i); |
| | | |
| | | if (c == SEPARATOR) |
| | | { |
| | | upperCase = true; |
| | | } |
| | | else if (upperCase) |
| | | { |
| | | sb.append(Character.toUpperCase(c)); |
| | | upperCase = false; |
| | | } |
| | | else |
| | | { |
| | | sb.append(c); |
| | | } |
| | | } |
| | | return sb.toString(); |
| | | } |
| | | |
| | | /** |
| | | * 查找指定字符串是否匹配指定字符串列表中的任意一个字符串 |
| | | * |
| | | * @param str 指定字符串 |
| | | * @param strs 需要检查的字符串数组 |
| | | * @return 是否匹配 |
| | | */ |
| | | public static boolean matches(String str, List<String> strs) |
| | | { |
| | | if (isEmpty(str) || isEmpty(strs)) |
| | | { |
| | | return false; |
| | | } |
| | | for (String pattern : strs) |
| | | { |
| | | if (isMatch(pattern, str)) |
| | | { |
| | | return true; |
| | | } |
| | | } |
| | | return false; |
| | | } |
| | | |
| | | /** |
| | | * 判断url是否与规则配置: |
| | | * ? 表示单个字符; |
| | | * * 表示一层路径内的任意字符串,不可跨层级; |
| | | * ** 表示任意层路径; |
| | | * |
| | | * @param pattern 匹配规则 |
| | | * @param url 需要匹配的url |
| | | * @return |
| | | */ |
| | | public static boolean isMatch(String pattern, String url) |
| | | { |
| | | AntPathMatcher matcher = new AntPathMatcher(); |
| | | return matcher.match(pattern, url); |
| | | } |
| | | |
| | | @SuppressWarnings("unchecked") |
| | | public static <T> T cast(Object obj) |
| | | { |
| | | return (T) obj; |
| | | } |
| | | |
| | | /** |
| | | * 数字左边补齐0,使之达到指定长度。注意,如果数字转换为字符串后,长度大于size,则只保留 最后size个字符。 |
| | | * |
| | | * @param num 数字对象 |
| | | * @param size 字符串指定长度 |
| | | * @return 返回数字的字符串格式,该字符串为指定长度。 |
| | | */ |
| | | public static final String padl(final Number num, final int size) |
| | | { |
| | | return padl(num.toString(), size, '0'); |
| | | } |
| | | |
| | | /** |
| | | * 字符串左补齐。如果原始字符串s长度大于size,则只保留最后size个字符。 |
| | | * |
| | | * @param s 原始字符串 |
| | | * @param size 字符串指定长度 |
| | | * @param c 用于补齐的字符 |
| | | * @return 返回指定长度的字符串,由原字符串左补齐或截取得到。 |
| | | */ |
| | | public static final String padl(final String s, final int size, final char c) |
| | | { |
| | | final StringBuilder sb = new StringBuilder(size); |
| | | if (s != null) |
| | | { |
| | | final int len = s.length(); |
| | | if (s.length() <= size) |
| | | { |
| | | for (int i = size - len; i > 0; i--) |
| | | { |
| | | sb.append(c); |
| | | } |
| | | sb.append(s); |
| | | } |
| | | else |
| | | { |
| | | return s.substring(len - size, len); |
| | | } |
| | | } |
| | | else |
| | | { |
| | | for (int i = size; i > 0; i--) |
| | | { |
| | | sb.append(c); |
| | | } |
| | | } |
| | | return sb.toString(); |
| | | } |
| | | } |