我已使用maven build将项目从Java 8升级到11，但出现以下错误，然后添加了 带有checkstyle依赖的maven-checkstyle-plugin。我不确定要添加哪个版本的Checkstyle来解决此问题。
Could not find artifact com.sun:tools:jar:1.7.0 at specified path C:\Program Files\Java\jdk-11.0.1/../lib/tools.jar
Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:checkstyle (checkstyle-run) on project reconciliation: Execution checkstyle-run of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:checkstyle failed: Plugin org.apache.maven.plugins:maven-checkstyle-plugin:2.17 or one of its dependencies could not be resolved: Could not find artifact com.sun:tools:jar:1.7.0 at specified path C:\Program Files\Java\jdk-11.0.1/../lib/tools.jar -> [Help 1]
[ERROR]
已添加Maven插件
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>3.1.1</version>
<dependencies>
<dependency>
<groupId>com.puppycrawl.tools</groupId>
<artifactId>checkstyle</artifactId>
<version>8.33</version>
</dependency>
</dependencies>
</plugin>
具有checkstyle 8.33
Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:3.1.1:checkstyle (checkstyle-run) on project recon-server: Execution checkstyle-run of goal org.apache.maven.plugins:maven-checkstyle-plugin:3.1.1:checkstyle failed: A required class was missing while executing org.apache.maven.plugins:maven-checkstyle-plugin:3.1.1:checkstyle: com/puppycrawl/tools/checkstyle/checks/metrics/AbstractComplexityCheck
使用checkstyle 7.6
Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:3.1.1:checkstyle (checkstyle-run) on project recon-server: Execution checkstyle-run of goal org.apache.maven.plugins:maven-checkstyle-plugin:3.1.1:checkstyle failed: A required class was missing while executing org.apache.maven.plugins:maven-checkstyle-plugin:3.1.1:checkstyle: com/puppycrawl/tools/checkstyle/api/AutomaticBean$OutputStreamOptions