From d67bdf4ad1c14659249a43d4dd116d36283a564d Mon Sep 17 00:00:00 2001
From: xuelianhan007 <xuelianhan007@gmail.com>
Date: Mon, 23 Dec 2024 10:23:35 +0800
Subject: [PATCH] added checking for empty string

---
 .../kraken/operator/gateway/runner/DataTypeChecker.java       | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kraken-java-sdk/kraken-java-sdk-gateway/src/main/java/com/consoleconnect/kraken/operator/gateway/runner/DataTypeChecker.java b/kraken-java-sdk/kraken-java-sdk-gateway/src/main/java/com/consoleconnect/kraken/operator/gateway/runner/DataTypeChecker.java
index bd6bbeed..858179fa 100644
--- a/kraken-java-sdk/kraken-java-sdk-gateway/src/main/java/com/consoleconnect/kraken/operator/gateway/runner/DataTypeChecker.java
+++ b/kraken-java-sdk/kraken-java-sdk-gateway/src/main/java/com/consoleconnect/kraken/operator/gateway/runner/DataTypeChecker.java
@@ -61,7 +61,9 @@ default boolean checkExpectNotBlank(PathCheck pathCheck, Object variable) {
 
   default boolean checkExpectString(PathCheck pathCheck, Object variable) {
     Class<?> dataType = whichDataTypeClass(variable);
-    if (Objects.isNull(variable) || !String.class.equals(dataType)) {
+    if (Objects.isNull(variable)
+        || !String.class.equals(dataType)
+        || StringUtils.isBlank((String) variable)) {
       throwException(
           pathCheck,
           String.format(