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[英]Why when i try push my Spring boot app to heroku it return "Fatal error compiling: invalid target release: 11"
[英]Error deploying my Spring boot project on Heroku (invalid target release)
// pom.xml 文件
4.0.0 org.springframework.boot spring-boot-starter-parent 2.3.3.RELEASE com.SpringBootJavaProject LearningProject 0.0.1-SNAPSHOT LearningProject Spring Boot 演示項目
<properties>
<java.version>14</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
</plugin>
<plugin>
<groupId>com.heroku.sdk</groupId>
<artifactId>heroku-maven-plugin</artifactId>
<version>3.0.3</version>
</plugin>
</plugins>
</build>
// 錯誤描述 [ERROR] 無法執行目標 org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project LearningProject: Fatal error compiling: invalid target release: 14 -> [幫助1]
Heroku 默認使用 OpenJDK 8。
更改為使用 Java 8 或在 system.properties 文件(位於項目的根目錄)中設置所需的 Java 版本,該文件應包含:
java.runtime.version=14
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