From ee004dfcc047241d9bf449a007f1e396968bf762 Mon Sep 17 00:00:00 2001
From: xwolf <2324808561@qq.com>
Date: Mon, 26 Mar 2018 17:13:06 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AD=97=E7=AC=A6=E4=B8=B2=E5=B7=A5=E5=85=B7?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../com/xwolf/boot/utils/StringUtils.java     | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 src/main/java/com/xwolf/boot/utils/StringUtils.java

diff --git a/src/main/java/com/xwolf/boot/utils/StringUtils.java b/src/main/java/com/xwolf/boot/utils/StringUtils.java
new file mode 100644
index 0000000..595ff41
--- /dev/null
+++ b/src/main/java/com/xwolf/boot/utils/StringUtils.java
@@ -0,0 +1,36 @@
+package com.xwolf.boot.utils;
+
+/**
+ * 字符串工具
+ * @author xwolf
+ * @version 1.0
+ * @since 1.8
+ */
+public class StringUtils {
+
+    /**
+     * 是否为空字符串
+     * @param str
+     * @return
+     */
+    public static boolean isBlank(String str){
+        int strLen;
+        if (str == null || (strLen = str.length()) == 0) {
+            return true;
+        }
+        for (int i = 0; i < strLen; i++) {
+            if (Character.isWhitespace(str.charAt(i)) == false) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public static boolean isNotBlank(String str){
+        return !isBlank(str);
+    }
+
+    public static void main(String[] args) {
+        System.out.println(isBlank("    "));
+    }
+}