使用 Heroku 使用 Maven 构建应用程序时出错 [英] Error When Building App with Maven Using Heroku

问题描述

我正在尝试使用 Heroku 部署我的 Discord 机器人，但每次我部署它时，它都会给我一个错误.该代码使用 IntelliJ Idea 在本地工作.任何人都可以帮我纠正这个错误吗?

I'm trying to deploy my Discord bot using Heroku but everytime I deploy it, it gives me an error. The code works on local using IntelliJ Idea. Can anyone help me correct this error please?

构建日志:

       [INFO] Changes detected - recompiling the module!
       [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
       [INFO] Compiling 21 source files to /tmp/build_8fdb6208/target/classes
       [INFO] ------------------------------------------------------------------------
       [INFO] BUILD FAILURE
       [INFO] ------------------------------------------------------------------------
       [INFO] Total time:  9.237 s
       [INFO] Finished at: 2021-03-21T23:52:06Z
       [INFO] ------------------------------------------------------------------------
       [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project CalciteDiscordBot: Fatal error compiling: invalid target release: 15 -> [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

这是我的 pom.xml:

Here's my pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>CalciteDiscordBot</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.target>15</maven.compiler.target>
        <maven.compiler.source>15</maven.compiler.source>
    </properties>
         
    <dependency>
        <groupId>net.dv8tion</groupId>
        <artifactId>JDA</artifactId>
        <version>4.2.0_168</version>
    </dependency>
    <repository>
        <id>jcenter</id>
        <name>jcenter-bintray</name>
        <url>https://jcenter.bintray.com</url>
    </repository>
</project>

推荐答案

您的应用程序需要 Java 15 (<maven.compiler.source>15</maven.compiler.source>) 所以你需要告诉 Heroku 你想要那个特定的 Java 版本(而不是默认版本)

You application requires Java 15 (<maven.compiler.source>15</maven.compiler.source>) so you need tell Heroku you want that specific Java version (instead of the default one)

在根文件夹中放置一个文件 system.properties:

In the root folder place a file system.properties:

java.runtime.version=15

这篇关于使用 Heroku 使用 Maven 构建应用程序时出错的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！