From 21ba7a20df4e0085ab7afbe7f61ea6459097cf5b Mon Sep 17 00:00:00 2001
From: PJ Fanning <pjfanning@users.noreply.github.com>
Date: Thu, 22 Dec 2022 23:13:57 +0100
Subject: [PATCH] need to handle trailing tokens

see https://github.com/FasterXML/jackson/discussions/143#discussioncomment-4479800
---
 .../java/com/baeldung/jsonvalidation/JacksonValidator.java  | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/json-modules/json-2/src/main/java/com/baeldung/jsonvalidation/JacksonValidator.java b/json-modules/json-2/src/main/java/com/baeldung/jsonvalidation/JacksonValidator.java
index 8c339f46c8..4385b39bb3 100644
--- a/json-modules/json-2/src/main/java/com/baeldung/jsonvalidation/JacksonValidator.java
+++ b/json-modules/json-2/src/main/java/com/baeldung/jsonvalidation/JacksonValidator.java
@@ -1,11 +1,15 @@
 package com.baeldung.jsonvalidation;
 
 import com.fasterxml.jackson.core.JacksonException;
+import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.json.JsonMapper;
 
 public class JacksonValidator {
 
-    final ObjectMapper mapper = new ObjectMapper();
+    final ObjectMapper mapper = JsonMapper.builder()
+        .enable(DeserializationFeature.FAIL_ON_TRAILING_TOKENS)
+        .build();
 
     public boolean isValid(String json) {
         try {