完善常用工具包.

hippo4j-common/src/main/java/cn/hippo4j/common/toolkit/JSONUtil.java

@@ -2,7 +2,6 @@ package cn.hippo4j.common.toolkit;
 
 import cn.hippo4j.common.api.JsonFacade;
 import cn.hippo4j.common.api.impl.JacksonHandler;
-import cn.hutool.core.util.StrUtil;
 
 import java.util.List;
 
@@ -25,7 +24,7 @@ public class JSONUtil {
     }
 
     public static <T> T parseObject(String text, Class<T> clazz) {
-        if (StrUtil.isBlank(text)) {
+        if (StringUtil.isBlank(text)) {
             return null;
         }
 
@@ -33,7 +32,7 @@ public class JSONUtil {
     }
 
     public static <T> List<T> parseArray(String text, Class<T> clazz) {
-        if (StrUtil.isBlank(text)) {
+        if (StringUtil.isBlank(text)) {
             return null;
         }
 

hippo4j-common/src/main/java/cn/hippo4j/common/toolkit/Md5Util.java

@@ -2,7 +2,6 @@ package cn.hippo4j.common.toolkit;
 
 import cn.hippo4j.common.constant.Constants;
 import cn.hippo4j.common.model.PoolParameter;
-import cn.hutool.core.util.StrUtil;
 
 import java.io.IOException;
 import java.net.URLEncoder;
@@ -78,12 +77,12 @@ public class Md5Util {
             sb.append(dataIdGroupId[1]);
             // if have tenant, then set it
             if (dataIdGroupId.length == 3) {
-                if (StrUtil.isNotBlank(dataIdGroupId[2])) {
+                if (StringUtil.isNotBlank(dataIdGroupId[2])) {
                     sb.append(Constants.WORD_SEPARATOR);
                     sb.append(dataIdGroupId[2]);
                 }
             } else if (dataIdGroupId.length == 4) {
-                if (StrUtil.isNotBlank(dataIdGroupId[2])) {
+                if (StringUtil.isNotBlank(dataIdGroupId[2])) {
                     sb.append(Constants.WORD_SEPARATOR);
                     sb.append(dataIdGroupId[2]);
                 }

hippo4j-common/src/main/java/cn/hippo4j/common/toolkit/StringUtil.java

@@ -10,6 +10,8 @@ public class StringUtil {
 
     public static final String EMPTY = "";
 
+    public static final char UNDERLINE = '_';
+
     /**
      * Is blank.
      *
@@ -45,4 +47,58 @@ public class StringUtil {
         return isBlank(str) == false;
     }
 
+    /**
+     * To underline case.
+     *
+     * @param str
+     * @return
+     */
+    public static String toUnderlineCase(CharSequence str) {
+        return toSymbolCase(str, UNDERLINE);
+    }
+
+    /**
+     * To symbol case.
+     *
+     * @param str
+     * @param symbol
+     * @return
+     */
+    public static String toSymbolCase(CharSequence str, char symbol) {
+        if (str == null) {
+            return null;
+        }
+
+        final int length = str.length();
+        final StringBuilder sb = new StringBuilder();
+        char c;
+        for (int i = 0; i < length; i++) {
+            c = str.charAt(i);
+            final Character preChar = (i > 0) ? str.charAt(i - 1) : null;
+            if (Character.isUpperCase(c)) {
+                final Character nextChar = (i < str.length() - 1) ? str.charAt(i + 1) : null;
+                if (null != preChar && Character.isUpperCase(preChar)) {
+                    sb.append(c);
+                } else if (null != nextChar && Character.isUpperCase(nextChar)) {
+                    if (null != preChar && symbol != preChar) {
+                        sb.append(symbol);
+                    }
+                    sb.append(c);
+                } else {
+                    if (null != preChar && symbol != preChar) {
+                        sb.append(symbol);
+                    }
+                    sb.append(Character.toLowerCase(c));
+                }
+            } else {
+                if (sb.length() > 0 && Character.isUpperCase(sb.charAt(sb.length() - 1)) && symbol != c) {
+                    sb.append(symbol);
+                }
+                sb.append(c);
+            }
+        }
+
+        return sb.toString();
+    }
+
 }