NoClassDefFound on newer Jenkins versions

[richardallred]

Jenkins and plugins versions report

Environment

```text Jenkins: 2.378 OS: Linux - 5.5.10-200.fc31.x86_64 --- ace-editor:1.1 additional-metrics:45.vc0cdf94c7d5b_ ansible:1.1 ansible-tower:0.16.0 ansicolor:1.0.2 ant:481.v7b_09e538fcca antisamy-markup-formatter:155.v795fb_8702324 anything-goes-formatter:1.0 apache-httpcomponents-client-4-api:4.5.13-138.v4e7d9a_7b_a_e61 authentication-tokens:1.4 aws-credentials:191.vcb_f183ce58b_9 aws-java-sdk-ec2:1.12.287-357.vf82d85a_6eefd aws-java-sdk-minimal:1.12.287-357.vf82d85a_6eefd basic-branch-build-strategies:71.vc1421f89888e blueocean:1.25.8 blueocean-autofavorite:1.2.5 blueocean-bitbucket-pipeline:1.25.8 blueocean-commons:1.25.8 blueocean-config:1.25.8 blueocean-core-js:1.25.8 blueocean-dashboard:1.25.8 blueocean-display-url:2.4.1 blueocean-events:1.25.8 blueocean-git-pipeline:1.25.8 blueocean-github-pipeline:1.25.8 blueocean-i18n:1.25.8 blueocean-jira:1.25.8 blueocean-jwt:1.25.8 blueocean-personalization:1.25.8 blueocean-pipeline-api-impl:1.25.8 blueocean-pipeline-editor:1.25.8 blueocean-pipeline-scm-api:1.25.8 blueocean-rest:1.25.8 blueocean-rest-impl:1.25.8 blueocean-web:1.25.8 bootstrap4-api:4.6.0-5 bootstrap5-api:5.2.1-3 bouncycastle-api:2.26 branch-api:2.1051.v9985666b_f6cc build-history-metrics-plugin:97.vdcf3aa48af8d build-monitor-plugin:1.13+build.202205140447 build-name-setter:2.2.0 build-timeout:1.25 caffeine-api:2.9.3-65.v6a_47d0f4d1fe changelog-history:1.7 changes-since-last-success:0.6 checks-api:1.8.0 cloudbees-bitbucket-branch-source:791.vb_eea_a_476405b cloudbees-folder:6.800.v71307ca_b_986b cobertura:1.17 code-coverage-api:3.4.0 command-launcher:90.v669d7ccb_7c31 commons-lang3-api:3.12.0-36.vd97de6465d5b_ commons-text-api:1.10.0-27.vb_fa_3896786a_7 copyartifact:1.48 credentials:1214.v1de940103927 credentials-binding:523.vd859a_4b_122e6 dark-theme:262.v0202a_4c8fb_6a data-tables-api:1.12.1-4 display-url-api:2.3.6 docker-commons:1.21 docker-workflow:528.v7c193a_0b_e67c durable-task:503.v57154d18d478 echarts-api:5.4.0-1 email-ext:2.92 embeddable-build-status:304.vdcf48d6b_d2eb extended-choice-parameter:356.va_90a_94ca_62ec external-monitor-job:203.v683c09d993b_9 favorite:2.4.1 file-parameters:205.vf6ce13b_e5dee font-awesome-api:6.2.1-1 forensics-api:1.16.0 git:4.14.1 git-changelog:3.25 git-client:3.13.0 git-server:99.va_0826a_b_cdfa_d github:1.36.0 github-api:1.303-400.v35c2d8258028 github-autostatus:3.6.2 github-branch-source:1696.v3a_7603564d04 github-oauth:0.39 global-build-stats:244.v27c8a_2e50a_34 google-chat-notification:1.4 gradle:2.1.1 handlebars:3.0.8 handy-uri-templates-2-api:2.1.8-22.v77d5b_75e6953 htmlpublisher:1.31 influxdb:3.4 instance-identity:116.vf8f487400980 ionicons-api:31.v4757b_6987003 jackson2-api:2.14.1-313.v504cdd45c18b jacoco:3.3.2 jakarta-activation-api:2.0.1-2 jakarta-mail-api:2.0.1-2 javadoc:226.v71211feb_e7e9 javax-activation-api:1.2.0-5 javax-mail-api:1.6.2-8 jaxb:2.3.7-1 jdk-tool:63.v62d2fd4b_4793 jenkins-design-language:1.25.8 jersey2-api:2.37-1 jira:3.8 jira-steps:2.0.141.vd0c6e6dc83f0 jjwt-api:0.11.5-77.v646c772fddb_0 jnr-posix-api:3.1.16-1 jquery:1.12.4-1 jquery-detached:1.2.1 jquery3-api:3.6.1-2 jsch:0.1.55.61.va_e9ee26616e7 junit:1166.va_436e268e972 kubernetes:3734.v562b_b_a_627ea_c kubernetes-client-api:5.12.2-193.v26a_6078f65a_9 kubernetes-credentials:0.9.0 last-changes:2.7.11 ldap:2.12 list-git-branches-parameter:0.0.11 lockable-resources:1069.v726298f53f8c mailer:438.v02c7f0a_12fa_4 mapdb-api:1.0.9-28.vf251ce40855d mask-passwords:3.3 matrix-auth:3.1.5 matrix-project:785.v06b_7f47b_c631 mercurial:1260.vdfb_723cdcc81 metrics:4.2.10-405.v60a_9cc74e923 mina-sshd-api-common:2.9.2-50.va_0e1f42659a_a mina-sshd-api-core:2.9.2-50.va_0e1f42659a_a momentjs:1.1.1 monitoring:1.91.0 okhttp-api:4.9.3-108.v0feda04578cf openJDK-native-plugin:1.5 pam-auth:1.10 periodicbackup:1.9 pipeline-build-step:2.18 pipeline-github:2.8-138.d766e30bb08b pipeline-github-lib:38.v445716ea_edda_ pipeline-graph-analysis:195.v5812d95a_a_2f9 pipeline-groovy-lib:621.vb_44ce045b_582 pipeline-input-step:466.v6d0a_5df34f81 pipeline-milestone-step:101.vd572fef9d926 pipeline-model-api:2.2118.v31fd5b_9944b_5 pipeline-model-definition:2.2118.v31fd5b_9944b_5 pipeline-model-extensions:2.2118.v31fd5b_9944b_5 pipeline-rest-api:2.28 pipeline-stage-step:296.v5f6908f017a_5 pipeline-stage-tags-metadata:2.2118.v31fd5b_9944b_5 pipeline-stage-view:2.28 pipeline-utility-steps:2.14.0 plain-credentials:139.ved2b_9cf7587b plot:2.1.11 plugin-util-api:2.20.0 popper-api:1.16.1-3 popper2-api:2.11.6-2 prism-api:1.29.0-1 pubsub-light:1.17 pyenv-pipeline:2.1.2 python:1.3 resource-disposer:0.20 role-strategy:569.v7476f8e4fe29 rpmsign-plugin:0.5.1 scm-api:621.vda_a_b_055e58f7 script-security:1218.v39ca_7f7ed0a_c snakeyaml-api:1.33-90.v80dcb_3814d35 solarized-theme:0.1 sse-gateway:1.26 ssh:2.6.1 ssh-agent:295.v9ca_a_1c7cc3a_a_ ssh-credentials:305.v8f4381501156 ssh-slaves:2.854.v7fd446b_337c9 ssh-steps:2.0.39.v831c5e6468b_c sshd:3.270.vb_a_e71e64c287 structs:324.va_f5d6774f3a_d subversion:2.16.0 theme-manager:1.5 token-macro:321.vd7cc1f2a_52c8 trilead-api:2.84.v72119de229b_7 uno-choice:2.6.4 variant:59.vf075fe829ccb windows-slaves:1.8.1 workflow-aggregator:590.v6a_d052e5a_a_b_5 workflow-api:1200.v8005c684b_a_c6 workflow-basic-steps:994.vd57e3ca_46d24 workflow-cps:3536.vb_8a_6628079d5 workflow-durable-task-step:1217.v38306d8fa_b_5c workflow-job:1254.v3f64639b_11dd workflow-multibranch:716.vc692a_e52371b_ workflow-scm-step:400.v6b_89a_1317c9a_ workflow-step-api:639.v6eca_cd8c04a_a_ workflow-support:839.v35e2736cfd5c ws-cleanup:0.43 ```

What Operating System are you using (both controller, and any agents involved in the problem)?

Fedora 35

Reproduction steps

Update to Jenkins version 2.379 or newer and try to use the GChat plugin to send a message.

Expected Results

The message is sent.

Actual Results

You get a NoClassDefFoundError

Anything else?

I suspect this is because Jenkins removed support for Commons HttpClient 3.x library for use by plugins. (see release notes https://www.jenkins.io/changelog/)

[Hungleminh]

@richardallred do you have any solutions for this issue?

[richardallred]

@richardallred do you have any solutions for this issue?

Right now, my solution is to not upgrade Jenkins beyond version 2.378 but it sounds like the only real solution is to update the dependencies for this plugin to not use the now deprecated HttpClient 3.x library that Jenkins removed support for.

[richardallred]

@Hungleminh

I've worked around this issue by just using curl in my pipeline instead of the plugin:

encoded_branch = java.net.URLEncoder.encode(branch_name, "UTF-8")
//Using a thread key with the branch name ensures that the webhook
//only creates a thread per branch instead of a new one for each message
sh """
     curl -X POST -H 'Content-Type: application/json' -H \"accept: application/json; charset=UTF-8\" '${gchat_webhook}&threadKey=${encoded_branch}' -d '{\"text\": \"${message}\" }'
"""

[Hungleminh]

@richardallred i didn't use pipeline. Do you know any solutions to config on jenkins?

[regazzoj]

Hello ! I have the same issue... Any plan to fix it for further Jenkins version ? (:

Edit: The plugin needs to be upgrade to Java 11 according to the 2.387.1 LTS Changelog Jenkins no longer bundles a patched version of the deprecated Commons HttpClient 3.x library for use by plugins. Plugins should be migrated to the native Java 11 HTTP client or updated to depend on the legacy Commons HttpClient 3.x API plugin.