fix StringUtils#isBlank (#4725)

apache · Aug 3, 2019 · a8785e9 · a8785e9
1 parent 1173b40
commit a8785e9
Showing 1 changed file with 11 additions and 2 deletions.
diff --git a/dubbo-common/src/main/java/org/apache/dubbo/common/utils/StringUtils.java b/dubbo-common/src/main/java/org/apache/dubbo/common/utils/StringUtils.java
@@ -347,8 +347,17 @@ public static String replace(final String text, final String searchString, final
         return buf.toString();
     }
 
-    public static boolean isBlank(String str) {
-        return isEmpty(str);
+    public static boolean isBlank(CharSequence cs) {
+        int strLen;
+        if (cs == null || (strLen = cs.length()) == 0) {
+            return true;
+        }
+        for (int i = 0; i < strLen; i++) {
+            if (!Character.isWhitespace(cs.charAt(i))) {
+                return false;
+            }
+        }
+        return true;
     }
 
     /**