fix code : update mysql url

src/main/java/club/xiaoandx/util/DBHelper.java

@@ -28,7 +28,7 @@ import java.sql.SQLException;
  */
 public class DBHelper {
     public static final String driver = "com.mysql.jdbc.Driver";
-    public static final String url = "jdbc:mysql://47.108.3.9:3306/dn_javaweb?characterEncoding=utf8&useSSL=true";
+    public static final String url = "jdbc:mysql://127.0.0.1:3306/dn_javaweb?characterEncoding=utf8&useSSL=true";
     public static final String username = "dn_xiaoandx";
     public static final String password = "dn_javaweb123";
     public static Connection con = null;

src/main/resources/c3p0-config.xml

@@ -2,7 +2,7 @@
 <c3p0-config>
     <default-config>
         <!-- 核心参数配置 -->
-        <property name="jdbcUrl">jdbc:mysql://47.108.3.9:3306/db_mr?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;serverTimezone=UTC</property>
+        <property name="jdbcUrl">jdbc:mysql://127.0.0.1:3306/db_mr?useUnicode=true&amp;characterEncoding=utf8&amp;useSSL=false&amp;serverTimezone=UTC</property>
         <property name="driverClass">com.mysql.cj.jdbc.Driver</property>
         <property name="user">db_mr</property>
         <property name="password">db_mr_dev1</property>