add spring security and token management

src/main/java/com/iconplus/smartproc/util/CommonUtil.java

@@ -0,0 +1,25 @@
+package com.iconplus.smartproc.util;
+
+import com.iconplus.smartproc.exception.TechnicalException;
+
+import java.sql.Clob;
+import java.sql.SQLException;
+
+public class CommonUtil {
+    private CommonUtil() {
+    }
+
+    public static String clobToString(Clob input) {
+        try {
+            if (input != null) {
+                return input.getSubString(1, (int) input.length());
+            } else {
+                return null;
+            }
+        } catch (SQLException exception) {
+            throw new TechnicalException(Constants.ERR_TTL_40041,
+                    Constants.ERR_TTL_40041,
+                    Constants.ERR_MSG_40041);
+        }
+    }
+}