@@ -0,0 +1,190 @@
+package com.chinacloudly.utils.string;%0A%0Apublic class StringUtils %7B%0A%0A%09public static String notNullString(final String valueString) %7B%0A%09%09return (null == valueString) ? %22%22 : valueString;%0A%09%7D%0A%09%0A%7D%0A

add string utils. some functions to deal a String