From 2841620be623be15c1832a783136a2b73c2b4424 Mon Sep 17 00:00:00 2001
From: 疯狂的狮子li <15040126243@163.com>
Date: 星期四, 13 二月 2020 10:48:51 +0800
Subject: [PATCH] 初始化项目
---
ruoyi/src/main/java/com/ruoyi/common/utils/StringUtils.java | 453 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 453 insertions(+), 0 deletions(-)
diff --git a/ruoyi/src/main/java/com/ruoyi/common/utils/StringUtils.java b/ruoyi/src/main/java/com/ruoyi/common/utils/StringUtils.java
new file mode 100644
index 0000000..e32daa5
--- /dev/null
+++ b/ruoyi/src/main/java/com/ruoyi/common/utils/StringUtils.java
@@ -0,0 +1,453 @@
+package com.ruoyi.common.utils;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import com.ruoyi.common.core.text.StrFormatter;
+
+/**
+ * 瀛楃涓插伐鍏风被
+ *
+ * @author ruoyi
+ */
+public class StringUtils extends org.apache.commons.lang3.StringUtils
+{
+ /** 绌哄瓧绗︿覆 */
+ private static final String NULLSTR = "";
+
+ /** 涓嬪垝绾� */
+ private static final char SEPARATOR = '_';
+
+ /**
+ * 鑾峰彇鍙傛暟涓嶄负绌哄��
+ *
+ * @param value defaultValue 瑕佸垽鏂殑value
+ * @return value 杩斿洖鍊�
+ */
+ public static <T> T nvl(T value, T defaultValue)
+ {
+ return value != null ? value : defaultValue;
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓狢ollection鏄惁涓虹┖锛� 鍖呭惈List锛孲et锛孮ueue
+ *
+ * @param coll 瑕佸垽鏂殑Collection
+ * @return true锛氫负绌� false锛氶潪绌�
+ */
+ public static boolean isEmpty(Collection<?> coll)
+ {
+ return isNull(coll) || coll.isEmpty();
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓狢ollection鏄惁闈炵┖锛屽寘鍚獿ist锛孲et锛孮ueue
+ *
+ * @param coll 瑕佸垽鏂殑Collection
+ * @return true锛氶潪绌� false锛氱┖
+ */
+ public static boolean isNotEmpty(Collection<?> coll)
+ {
+ return !isEmpty(coll);
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓璞℃暟缁勬槸鍚︿负绌�
+ *
+ * @param objects 瑕佸垽鏂殑瀵硅薄鏁扮粍
+ ** @return true锛氫负绌� false锛氶潪绌�
+ */
+ public static boolean isEmpty(Object[] objects)
+ {
+ return isNull(objects) || (objects.length == 0);
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓璞℃暟缁勬槸鍚﹂潪绌�
+ *
+ * @param objects 瑕佸垽鏂殑瀵硅薄鏁扮粍
+ * @return true锛氶潪绌� false锛氱┖
+ */
+ public static boolean isNotEmpty(Object[] objects)
+ {
+ return !isEmpty(objects);
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓狹ap鏄惁涓虹┖
+ *
+ * @param map 瑕佸垽鏂殑Map
+ * @return true锛氫负绌� false锛氶潪绌�
+ */
+ public static boolean isEmpty(Map<?, ?> map)
+ {
+ return isNull(map) || map.isEmpty();
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓狹ap鏄惁涓虹┖
+ *
+ * @param map 瑕佸垽鏂殑Map
+ * @return true锛氶潪绌� false锛氱┖
+ */
+ public static boolean isNotEmpty(Map<?, ?> map)
+ {
+ return !isEmpty(map);
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓瓧绗︿覆鏄惁涓虹┖涓�
+ *
+ * @param str String
+ * @return true锛氫负绌� false锛氶潪绌�
+ */
+ public static boolean isEmpty(String str)
+ {
+ return isNull(str) || NULLSTR.equals(str.trim());
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓瓧绗︿覆鏄惁涓洪潪绌轰覆
+ *
+ * @param str String
+ * @return true锛氶潪绌轰覆 false锛氱┖涓�
+ */
+ public static boolean isNotEmpty(String str)
+ {
+ return !isEmpty(str);
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓璞℃槸鍚︿负绌�
+ *
+ * @param object Object
+ * @return true锛氫负绌� false锛氶潪绌�
+ */
+ public static boolean isNull(Object object)
+ {
+ return object == null;
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓璞℃槸鍚﹂潪绌�
+ *
+ * @param object Object
+ * @return true锛氶潪绌� false锛氱┖
+ */
+ public static boolean isNotNull(Object object)
+ {
+ return !isNull(object);
+ }
+
+ /**
+ * * 鍒ゆ柇涓�涓璞℃槸鍚︽槸鏁扮粍绫诲瀷锛圝ava鍩烘湰鍨嬪埆鐨勬暟缁勶級
+ *
+ * @param object 瀵硅薄
+ * @return true锛氭槸鏁扮粍 false锛氫笉鏄暟缁�
+ */
+ public static boolean isArray(Object object)
+ {
+ return isNotNull(object) && object.getClass().isArray();
+ }
+
+ /**
+ * 鍘荤┖鏍�
+ */
+ public static String trim(String str)
+ {
+ return (str == null ? "" : str.trim());
+ }
+
+ /**
+ * 鎴彇瀛楃涓�
+ *
+ * @param str 瀛楃涓�
+ * @param start 寮�濮�
+ * @return 缁撴灉
+ */
+ 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);
+ }
+
+ /**
+ * 鎴彇瀛楃涓�
+ *
+ * @param str 瀛楃涓�
+ * @param start 寮�濮�
+ * @param end 缁撴潫
+ * @return 缁撴灉
+ */
+ 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);
+ }
+
+ /**
+ * 鏍煎紡鍖栨枃鏈�, {} 琛ㄧず鍗犱綅绗�<br>
+ * 姝ゆ柟娉曞彧鏄畝鍗曞皢鍗犱綅绗� {} 鎸夌収椤哄簭鏇挎崲涓哄弬鏁�<br>
+ * 濡傛灉鎯宠緭鍑� {} 浣跨敤 \\杞箟 { 鍗冲彲锛屽鏋滄兂杈撳嚭 {} 涔嬪墠鐨� \ 浣跨敤鍙岃浆涔夌 \\\\ 鍗冲彲<br>
+ * 渚嬶細<br>
+ * 閫氬父浣跨敤锛歠ormat("this is {} for {}", "a", "b") -> this is a for b<br>
+ * 杞箟{}锛� format("this is \\{} for {}", "a", "b") -> this is \{} for a<br>
+ * 杞箟\锛� format("this is \\\\{} for {}", "a", "b") -> this is \a for b<br>
+ *
+ * @param template 鏂囨湰妯℃澘锛岃鏇挎崲鐨勯儴鍒嗙敤 {} 琛ㄧず
+ * @param params 鍙傛暟鍊�
+ * @return 鏍煎紡鍖栧悗鐨勬枃鏈�
+ */
+ public static String format(String template, Object... params)
+ {
+ if (isEmpty(params) || isEmpty(template))
+ {
+ return template;
+ }
+ return StrFormatter.format(template, params);
+ }
+
+ /**
+ * 瀛楃涓茶浆set
+ *
+ * @param str 瀛楃涓�
+ * @param sep 鍒嗛殧绗�
+ * @return set闆嗗悎
+ */
+ public static final Set<String> str2Set(String str, String sep)
+ {
+ return new HashSet<String>(str2List(str, sep, true, false));
+ }
+
+ /**
+ * 瀛楃涓茶浆list
+ *
+ * @param str 瀛楃涓�
+ * @param sep 鍒嗛殧绗�
+ * @param filterBlank 杩囨护绾┖鐧�
+ * @param trim 鍘绘帀棣栧熬绌虹櫧
+ * @return list闆嗗悎
+ */
+ public static final List<String> str2List(String str, String sep, boolean filterBlank, boolean trim)
+ {
+ List<String> list = new ArrayList<String>();
+ if (StringUtils.isEmpty(str))
+ {
+ return list;
+ }
+
+ // 杩囨护绌虹櫧瀛楃涓�
+ if (filterBlank && StringUtils.isBlank(str))
+ {
+ return list;
+ }
+ String[] split = str.split(sep);
+ for (String string : split)
+ {
+ if (filterBlank && StringUtils.isBlank(string))
+ {
+ continue;
+ }
+ if (trim)
+ {
+ string = string.trim();
+ }
+ list.add(string);
+ }
+
+ return list;
+ }
+
+ /**
+ * 涓嬪垝绾胯浆椹煎嘲鍛藉悕
+ */
+ public static String toUnderScoreCase(String str)
+ {
+ if (str == null)
+ {
+ return null;
+ }
+ StringBuilder sb = new StringBuilder();
+ // 鍓嶇疆瀛楃鏄惁澶у啓
+ boolean preCharIsUpperCase = true;
+ // 褰撳墠瀛楃鏄惁澶у啓
+ boolean curreCharIsUpperCase = true;
+ // 涓嬩竴瀛楃鏄惁澶у啓
+ 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();
+ }
+
+ /**
+ * 鏄惁鍖呭惈瀛楃涓�
+ *
+ * @param str 楠岃瘉瀛楃涓�
+ * @param strs 瀛楃涓茬粍
+ * @return 鍖呭惈杩斿洖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;
+ }
+
+ /**
+ * 灏嗕笅鍒掔嚎澶у啓鏂瑰紡鍛藉悕鐨勫瓧绗︿覆杞崲涓洪┘宄板紡銆傚鏋滆浆鎹㈠墠鐨勪笅鍒掔嚎澶у啓鏂瑰紡鍛藉悕鐨勫瓧绗︿覆涓虹┖锛屽垯杩斿洖绌哄瓧绗︿覆銆� 渚嬪锛欻ELLO_WORLD->HelloWorld
+ *
+ * @param name 杞崲鍓嶇殑涓嬪垝绾垮ぇ鍐欐柟寮忓懡鍚嶇殑瀛楃涓�
+ * @return 杞崲鍚庣殑椹煎嘲寮忓懡鍚嶇殑瀛楃涓�
+ */
+ public static String convertToCamelCase(String name)
+ {
+ StringBuilder result = new StringBuilder();
+ // 蹇�熸鏌�
+ if (name == null || name.isEmpty())
+ {
+ // 娌″繀瑕佽浆鎹�
+ return "";
+ }
+ else if (!name.contains("_"))
+ {
+ // 涓嶅惈涓嬪垝绾匡紝浠呭皢棣栧瓧姣嶅ぇ鍐�
+ return name.substring(0, 1).toUpperCase() + name.substring(1);
+ }
+ // 鐢ㄤ笅鍒掔嚎灏嗗師濮嬪瓧绗︿覆鍒嗗壊
+ String[] camels = name.split("_");
+ for (String camel : camels)
+ {
+ // 璺宠繃鍘熷瀛楃涓蹭腑寮�澶淬�佺粨灏剧殑涓嬫崲绾挎垨鍙岄噸涓嬪垝绾�
+ if (camel.isEmpty())
+ {
+ continue;
+ }
+ // 棣栧瓧姣嶅ぇ鍐�
+ result.append(camel.substring(0, 1).toUpperCase());
+ result.append(camel.substring(1).toLowerCase());
+ }
+ return result.toString();
+ }
+
+ /**
+ * 椹煎嘲寮忓懡鍚嶆硶 渚嬪锛歶ser_name->userName
+ */
+ public static String toCamelCase(String s)
+ {
+ if (s == null)
+ {
+ return null;
+ }
+ 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();
+ }
+}
\ No newline at end of file
--
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