From c9190af38fd6fd9e71ca7db2b343e3a79f24ff5c Mon Sep 17 00:00:00 2001
From: 13693261870 <252740454@qq.com>
Date: 星期三, 23 十一月 2022 16:23:44 +0800
Subject: [PATCH] 1

---
 src/main/java/com/lf/server/helper/StringHelper.java |   65 +++++++++++++++++++++++++++-----
 1 files changed, 55 insertions(+), 10 deletions(-)

diff --git a/src/main/java/com/lf/server/helper/StringHelper.java b/src/main/java/com/lf/server/helper/StringHelper.java
index 2951518..184cbfc 100644
--- a/src/main/java/com/lf/server/helper/StringHelper.java
+++ b/src/main/java/com/lf/server/helper/StringHelper.java
@@ -15,7 +15,7 @@
     /**
      * 鏁板瓧姝ｅ垯
      */
-    public static final Pattern NUMBER_PATTERN = Pattern.compile("^[-\\+]?[\\d]*[.]?[\\d]*$");
+    public static final Pattern NUMBER_PATTERN = Pattern.compile("-?\\d+(\\.\\d+)?");
 
     /**
      * 鏍煎紡鍖栧綋鍓嶇郴缁熸棩鏈� 1
@@ -30,24 +30,43 @@
     /**
      * 鏍煎紡鍖栧綋鍓嶇郴缁熸棩鏈� 3
      */
-    public static final SimpleDateFormat YMD__FORMAT = new SimpleDateFormat("yyyyMMdd_");
+    public static final SimpleDateFormat YMD2_FORMAT = new SimpleDateFormat("yyyyMMdd");
 
     /**
      * 鏍煎紡鍖栧綋鍓嶇郴缁熸棩鏈� 4
      */
-    public static final SimpleDateFormat YMD_HM_FORMAT = new SimpleDateFormat("yyyyMMdd_HHmm");
+    public static final SimpleDateFormat YMDHMS2_FORMAT = new SimpleDateFormat("yyyyMMddHHmmss");
 
     /**
-     * 鍒ゆ柇瀛楃涓�,鏄惁涓烘暟瀛�
+     * 鍒ゆ柇瀛楃涓�,鏄惁涓烘暣鏁�
      */
-    public static boolean isNumber(String str) {
-        return NUMBER_PATTERN.matcher(str).matches();
+    public static boolean isInteger(String str) {
+        return str != null && str.matches("[0-9]+");
+    }
+
+    /**
+     * 鍒ゆ柇瀛楃涓�,鏄惁涓烘诞鐐规暟
+     */
+    public static boolean isNumeric(String str) {
+        return str != null && str.matches("-?\\d+(\\.\\d+)?");
+    }
+
+    /**
+     * 鍒ゆ柇瀛楃涓�,鏄惁涓烘诞鐐规暟
+     */
+    public static boolean isNumeric2(String str) {
+        return str != null && NUMBER_PATTERN.matcher(str).matches();
     }
 
     /**
      * 鏃ユ湡姝ｅ垯
      */
     public static Pattern datePattern = Pattern.compile("^((\\d{2}(([02468][048])|([13579][26]))[\\-\\/]((((0?[13578])|(1[02]))[\\-\\/]((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/]((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/]((0?[1-9])|([1-2][0-9])))))|(\\d{2}(([02468][1235679])|([13579][01345789]))[\\-\\/]((((0?[13578])|(1[02]))[\\-\\/]((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/]((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/]((0?[1-9])|(1[0-9])|(2[0-8]))))))(\\s(((0?[0-9])|([1-2][0-3]))\\:([0-5]?[0-9])((\\s)|(\\:([0-5]?[0-9])))))?$");
+
+    /**
+     * SQL姝ｅ垯
+     */
+    public static Pattern sqlPattern = Pattern.compile("|and|exec|execute|insert|select|delete|update|count|drop|\\*|%|chr|mid|master|truncate|char|declare|sitename|net user|xp_cmdshell|;|or|-|\\+|,|like");
 
     /**
      * 瀛楃涓茶浆涓烘棩鏈�
@@ -97,15 +116,41 @@
     /**
      * 鑾峰彇 like 瀛楃涓�
      */
-    public static String getLikeStr(String name) {
-        return StringHelper.isEmpty(name) ? null : "%" + name.trim() + "%";
+    public static String getLikeStr(String str) {
+        return StringHelper.isEmpty(str) ? null : "%" + str.trim() + "%";
+    }
+
+    /**
+     * 鑾峰彇 like 瀛楃涓�-2
+     */
+    public static String getLikeStr2(String str) {
+        return StringHelper.isEmpty(str) ? "%" : "%" + str.trim() + "%";
     }
 
     /**
      * 棣栧瓧姣嶅ぇ鍐�
      */
-    public static String capitalize(String str) {
-        return String.valueOf(str.charAt(0)).toUpperCase() + str.substring(1);
+    public static String firstCharToUpperCase(String str) {
+        return str.substring(0, 1).toUpperCase() + str.substring(1);
+    }
+
+    /**
+     * 棣栧瓧姣嶅皬鍐�
+     */
+    public static String firstCharToLowerCase(String str) {
+        return str.substring(0, 1).toLowerCase() + str.substring(1);
+    }
+
+    /**
+     * 鍒ゆ柇鍊兼槸鍚﹀瓨鍦⊿QL娉ㄥ叆
+     *
+     * @param str 瀛楃涓�
+     * @return 鏄�/鍚�
+     */
+    public static boolean isSqlInjection(String str) {
+        Matcher m = sqlPattern.matcher(str);
+
+        return m.matches();
     }
 
     /**

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