开张大吉。

src/main/java/com/wehotel/util/Utils.java

@@ -0,0 +1,85 @@
+/*
+ *  Copyright (C) 2020 the original author or authors.
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.wehotel.util;
+
+import org.apache.commons.lang3.StringUtils;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+
+/**
+ * @author lancer
+ */
+
+public abstract class Utils {
+
+    public static void addTo(StringBuilder b, String k, char c, boolean v, String separator) {
+        b.append(k).append(c).append(v).append(separator);
+    }
+
+    public static void addTo(StringBuilder b, String k, char c, char v, String separator) {
+        b.append(k).append(c).append(v).append(separator);
+    }
+
+    public static void addTo(StringBuilder b, String k, char c, int v, String separator) {
+        b.append(k).append(c).append(v).append(separator);
+    }
+
+    public static void addTo(StringBuilder b, String k, char c, long v, String separator) {
+        b.append(k).append(c).append(v).append(separator);
+    }
+
+    public static void addTo(StringBuilder b, String k, char c, float v, String separator) {
+        b.append(k).append(c).append(v).append(separator);
+    }
+
+    public static void addTo(StringBuilder b, String k, char c, double v, String separator) {
+        b.append(k).append(c).append(v).append(separator);
+    }
+
+    public static void addTo(StringBuilder b, String k, char c, String v, String separator) {
+        b.append(k).append(c).append(v).append(separator);
+    }
+
+    public static void addTo(StringBuilder b, String k, char c, LocalTime v, String separator) {
+        b.append(k).append(c).append(v).append(separator);
+    }
+
+    public static void addTo(StringBuilder b, String k, char c, LocalDate v, String separator) {
+        b.append(k).append(c).append(v).append(separator);
+    }
+
+    public static void addTo(StringBuilder b, String k, char c, LocalDateTime v, String separator) { b.append(k).append(c).append(v).append(separator); }
+
+    public static void addTo(StringBuilder b, String k, char c, Object v, String separator) {
+        b.append(k).append(c).append(v).append(separator);
+    }
+
+    public static String initials2lowerCase(String s) {
+        if (StringUtils.isBlank(s)) {
+            return s;
+        }
+        int cp = s.codePointAt(0);
+        if (cp < 65 || cp > 90) {
+            return s;
+        }
+        char[] ca = s.toCharArray();
+        ca[0] += 32;
+        return String.valueOf(ca);
+    }
+}