Update JsonSchemaGenerator.java

Author: TheEterna

spring-ai-model/src/main/java/org/springframework/ai/util/json/schema/JsonSchemaGenerator.java

@@ -129,7 +129,7 @@ public static String generateForMethodInput(Method method, SchemaOption... schem
 			String parameterName = method.getParameters()[i].getName();
 			Type parameterType = method.getGenericParameterTypes()[i];
 			if (parameterType instanceof Class<?> parameterClass
-					&& ClassUtils.isAssignable(parameterClass, ToolContext.class)) {
+					&& ClassUtils.isAssignable(ToolContext.class, parameterClass)) {
 				// A ToolContext method parameter is not included in the JSON Schema
 				// generation.
 				// It's a special type used by Spring AI to pass contextual data to tools