背景

SonarQube运行于Java17，使用Sonar的Maven插件编译时，如果编译使用的JDK版本低于SonarQube使用的Java17，则会提示Java文件不匹配问题。

Error during SonarScanner execution
java.lang.UnsupportedClassVersionError: org/sonar/batch/bootstrapper/EnvironmentInformation has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0

maven-compiler-plugin

通过设置编译插件配置来输出指定版本的编译。

<plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.8.1</version><configuration><fork>true</fork><source>1.8</source><compilerVersion>1.8</compilerVersion><target>1.8</target><encoding>UTF-8</encoding></configuration>
</plugin>

当缺少上面的configuration配置时，可能出现编译报错。

Fatal error compiling: java.lang.ExceptionInInitializerError: Unable to make field private com.sun.tools.javac.processing.JavacProcessingEnvironment$DiscoveredProcessors com.sun.tools.javac.processing.JavacProcessingEnvironment.discoveredProcs accessible: module jdk.compiler does not “opens com.sun.tools.javac.processing” to unnamed module

JDK对应的Class File版本信息

JDK版本	Class File版本
1.0.2	45
1.1	45
1.2	46
1.3	47
1.4	48
5.0	49
6	50
7	51
8	52
9	53
10	54
11	55
12	56
13	57
14	58
15	59
16	60
17	61
18	62
19	63
20	64
21	65