How to deploy spring boot to heroku?

Question

I wanted to deploy my application to heroku server and I am facing this problem. Any idea?

      [INFO] BUILD FAILURE
       [INFO] ------------------------------------------------------------------------
       [INFO] Total time:  13.339 s
       [INFO] Finished at: 2021-08-09T04:05:01Z
       [INFO] ------------------------------------------------------------------------
       [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project russion_spring_boot: Fatal error compiling: invalid target release: 11 -> [Help 1]
       [ERROR] 
       [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
       [ERROR] Re-run Maven using the -X switch to enable full debug logging.
       [ERROR] 
       [ERROR] For more information about the errors and possible solutions, please read the following articles:
       [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
 !     ERROR: Failed to build app with Maven
       We're sorry this build is failing! If you can't find the issue in application code,
       please submit a ticket so we can help: https://help.heroku.com/
 !     Push rejected, failed to compile Java app.
 !     Push failed

   <properties>
        <java.version>15.0.1</java.version>
    </properties>

What is the JDK version you are using? Please add the output of mvn -v — seenukarthi
– seenukarthi, Commented Aug 9, 2021 at 4:43

Jignesh M. Khatri · Accepted Answer · 2021-08-09 05:07:09Z

2

Logs depict the error - invalid target release: 11. Basically this error means that you have mentioned higher/mismatched version of Java in maven compiler's source and target java version settings in your pom.xml compared to the JDK which is being pointed out by JAVA_HOME environment variable.

To fix this error, just check the Java version in pom.xml and JAVA_HOME. They should match.

To know more about this issue, check this post - https://dzone.com/articles/how-to-fix-invalid-target-release-17-18-19-or-110

answered Aug 9, 2021 at 5:07

Jignesh M. Khatri

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11 Comments

Bekjan Omirzak Over a year ago

I think they match, please take a lookt at my pom.xml file where I wrote my java version.

Jignesh M. Khatri Over a year ago

But what is there in JAVA_HOME. Can you provide full output of mvn --version.

Bekjan Omirzak Over a year ago

Yes, sure here it is C:\Users\bekja>mvn -version Apache Maven 3.8.1 (05c21c65bdfed0f71a2f2ada8b84da59348c4c5d) Maven home: C:\Program Files\apache-maven-3.8.1\bin\.. Java version: 15.0.1, vendor: Oracle Corporation, runtime: C:\Program Files\Java\jdk-15.0.1 Default locale: ru_RU, platform encoding: Cp1252 OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

Jignesh M. Khatri Over a year ago

Two changes I would suggest: 1) Change java.version to 15 in pom.xml. 2) Add maven.compiler.source and maven.compiler.target properties in pom.xml along with java.version. Both will have same value as that of java.version.

Bekjan Omirzak Over a year ago

I did exactly as you said, here I am getting this problem again Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project demo: Fatal error compi ling: invalid target release: 15 -> [Help 1]

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