DuplicateJsonObjectContextCustomizer object | Java Community | Help. Code. Learn. | Page 1

vast heart Nov 17, 2025, 3:27 PM

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can anyone tell me how to exclude it i am new

Found multiple occurrences of org.json.JSONObject on the class path:

        jar:file:/C:/Users/ashir/.m2/repository/org/json/json/20250517/json-20250517.jar!/org/json/JSONObject.class
        jar:file:/C:/Users/ashir/.m2/repository/com/vaadin/external/google/android-json/0.0.20131108.vaadin1/android-json-0.0.20131108.vaadin1.jar!/org/json/JSONObject.class
You may wish to exclude one of them to ensure predictable runtime behavior

cold flameBOT Nov 17, 2025, 3:27 PM

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Hey @vast heart! Please use /close or the Close Post button above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically marked as dormant after 300 minutes of inactivity.

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spark spindle Nov 17, 2025, 3:33 PM

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Are you using Maven or Gradle?

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Currently, you have different dependencies that bring in both org.json:json:jar:20250517 and com.vaadin.external.google:android-json:jar:0.0.20131108.vaadin1 which have the same code/are in conflict with each other

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You can probably exclude the vaadin one

vast heart Nov 17, 2025, 3:37 PM

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maven

spark spindle Nov 17, 2025, 3:49 PM

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Can you show your pom.xml?

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and the output of mvn dependency:tree

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In the dependency causing the issue, you can probably do something like the following:

<dependency>
  ...
  <exclusions>
    <exclusion>
      <groupid>com.vaadin.external.google</groupId>
      <artifactId>android-json</artifactId>
    </exclusion>
  </exclusions>
</dependency>

vast heart Nov 17, 2025, 3:52 PM

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📎 message.txt

spark spindle Nov 17, 2025, 3:52 PM

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Can I see the output of mvn dependency:tree? That should show that android-json somewhere

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Alternatively, you can probably fix it by just removing

        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20250517</version>
        </dependency>

but to be honest, I'd rather exclude the other one

vast heart Nov 17, 2025, 3:53 PM

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📎 message.txt

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i think i used this somewhere so warning came other one not using

spark spindle Nov 17, 2025, 3:55 PM

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ok

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You have this:

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

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Replace it by

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
              <exclusion>
                <groupId>com.vaadin.external.google</groupId>
                <artifactId>android-json</artifactId>
              </exclusion>
            </exclusions>
        </dependency>

vast heart Nov 17, 2025, 3:57 PM

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ok

spark spindle Nov 17, 2025, 3:58 PM

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because that's where the problematic dependency comes from:

[INFO] +- org.springframework.boot:spring-boot-starter-test:jar:3.5.7:test // LEVEL 1 - direct dependency
[INFO] |  +- org.springframework.boot:spring-boot-test:jar:3.5.7:test
[INFO] |  +- org.springframework.boot:spring-boot-test-autoconfigure:jar:3.5.7:test
[INFO] |  +- com.jayway.jsonpath:json-path:jar:2.9.0:test
[INFO] |  +- jakarta.xml.bind:jakarta.xml.bind-api:jar:4.0.4:runtime
[INFO] |  |  \- jakarta.activation:jakarta.activation-api:jar:2.1.4:runtime
[INFO] |  +- net.minidev:json-smart:jar:2.5.2:test
[INFO] |  |  \- net.minidev:accessors-smart:jar:2.5.2:test
[INFO] |  |     \- org.ow2.asm:asm:jar:9.7.1:test
[INFO] |  +- org.assertj:assertj-core:jar:3.27.6:test
[INFO] |  +- org.awaitility:awaitility:jar:4.2.2:test
[INFO] |  +- org.hamcrest:hamcrest:jar:3.0:test
[INFO] |  +- org.junit.jupiter:junit-jupiter:jar:5.12.2:test
[INFO] |  |  +- org.junit.jupiter:junit-jupiter-api:jar:5.12.2:test
[INFO] |  |  |  +- org.opentest4j:opentest4j:jar:1.3.0:test
[INFO] |  |  |  +- org.junit.platform:junit-platform-commons:jar:1.12.2:test
[INFO] |  |  |  \- org.apiguardian:apiguardian-api:jar:1.1.2:test
[INFO] |  |  +- org.junit.jupiter:junit-jupiter-params:jar:5.12.2:test
[INFO] |  |  \- org.junit.jupiter:junit-jupiter-engine:jar:5.12.2:test
[INFO] |  |     \- org.junit.platform:junit-platform-engine:jar:1.12.2:test
[INFO] |  +- org.mockito:mockito-core:jar:5.17.0:test
[INFO] |  |  +- net.bytebuddy:byte-buddy-agent:jar:1.17.8:test
[INFO] |  |  \- org.objenesis:objenesis:jar:3.3:test
[INFO] |  +- org.mockito:mockito-junit-jupiter:jar:5.17.0:test
[INFO] |  +- org.skyscreamer:jsonassert:jar:1.5.3:test // LEVEL 2 - transitive dependency
[INFO] |  |  \- com.vaadin.external.google:android-json:jar:0.0.20131108.vaadin1:test // LEVEL 3 - transitive problematic dependency

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so you can exclude the transitive dependency causing the issue

vast heart Nov 17, 2025, 3:59 PM

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spark spindle Nov 17, 2025, 3:59 PM

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oh I probably made a typo

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yeah, it should be groupId, not groupid

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I updated the message from before

vast heart Nov 17, 2025, 4:00 PM

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oh ok np

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fixed

spark spindle Nov 17, 2025, 4:00 PM

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Then you can try running mvn clean verify to see whether it worked ;)

vast heart Nov 17, 2025, 4:01 PM

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2025-11-17T21:30:25.321+05:30 WARN 8564 --- [ restartedMain] org.hibernate.orm.deprecation : HHH90000025: MySQLDialect does not need to be specified explicitly using 'hibernate.dialect' (remove the property setting and it will be selected by default)
should i remove it

spark spindle Nov 17, 2025, 4:14 PM

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vast heart 2025-11-17T21:30:25.321+05:30 WARN 8564 --- [ restartedMain] org.hibernate.orm...

the warning tells you you don't need it so yes, you can remove it

cold flameBOT Nov 17, 2025, 9:20 PM

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frozen fable Nov 18, 2025, 7:36 AM

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spark spindle Alternatively, you can probably fix it by just removing ```xml <dependen...

But you are not allowed to do evil things with that one...

spark spindle Nov 18, 2025, 8:04 AM

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frozen fable But you are not allowed to do evil things with that one...

What if I am evil? Anyway, it would also be possible to use the enforcer plugin to ensure the dependency isn't there

frozen fable Nov 18, 2025, 9:09 AM

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Well technically the android-vaadin library is just a fork of the org.json from 2013 with a standard license and all bugs actually tested, while org.json started to actually fix these bug in recent years.

cold flameBOT Nov 18, 2025, 2:20 PM

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vast heart Nov 19, 2025, 1:31 AM

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2025-11-19T06:49:52.759+05:30 WARN 4244 --- [-10:housekeeper] com.zaxxer.hikari.pool.HikariPool : HikariPool-10 - Thread starvation or clock leap detected (housekeeper delta=6h17m41s489ms239µs400ns).

@spark spindle do u know about this

cold flameBOT Nov 19, 2025, 6:40 AM

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💤 Post marked as dormant

This post has been inactive for over 300 minutes, thus, it has been archived.
If your question was not answered yet, feel free to re-open this post or create a new one.
In case your post is not getting any attention, you can try to use /help ping.
Warning: abusing this will result in moderative actions taken against you.

spark spindle Nov 19, 2025, 7:57 AM

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vast heart 2025-11-19T06:49:52.759+05:30 WARN 4244 --- [-10:housekeeper] com.zaxxer.hikari...

Did this happen on a laptop or a server?

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@cold flame is getting these every time I'm doing updates lol

spark spindle Nov 19, 2025, 7:59 AM

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spark spindle Did this happen on a laptop or a server?

This is likely due to you suspending a laptop or similar - and the program continuing 6h later

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or maybe it could be something about your code bring in an endless loop or something blocking forever- if this happens on a server, create a thread dump

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also it can happen when changing your system time or maybe timezone

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maybe also if you are somehow manually obtaining DB connections and not releasing them

vast heart Nov 19, 2025, 8:55 AM

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Yes my laptop throw this log

spark spindle Nov 19, 2025, 11:42 AM

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then it's probably just that - you suspended it, turned it on again and then it detected that the clock suddenly jumped by 6h

#DuplicateJsonObjectContextCustomizer object