Sonarqube也有同样的问题

已经由最新版本的Java运行时(类文件版本55.0)编译，这个版本的Java运行时只识别类文件版本52.0

Sonarqube与AzureDevOps错误输出:

INFO: SonarScanner 4.6.2.2472 INFO: Java 1.8.0_231 Oracle Corporation (32-bit) INFO: Windows Server 2016 10.0 x86 INFO: User cache: C:\Windows\system32\config\systemprofile.sonar\cache INFO: Scanner configuration file: C:\agent_a_work_tasks\SonarQubePrepare_15b84ca1-b62f-4a2a-a403-89b77a063157\5.4.0\classic-sonar-scanner-msbuild\sonar-scanner-4.6.2.2472\bin..\conf\sonar-scanner.properties INFO: Project root configuration file: C:\agent_a_work\189.sonarqube\out\sonar-project.properties INFO: Analyzing on SonarQube server 9.4.0 INFO: Default locale: "en_AU", source code encoding: "windows-1252" (analysis is platform dependent) INFO: ------------------------------------------------------------------------ INFO: EXECUTION FAILURE INFO: ------------------------------------------------------------------------ INFO: Total time: 0.405s INFO: Final Memory: 3M/15M ##[error]ERROR: 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 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0

我在Sonarcube服务器上安装了Java v11，但错误提示它的构建代理没有Java v11。

我决定将Java v12 bin路径添加到环境变量路径中，以便检测它。重要的是，这需要在构建代理上完成:

对于托管生成代理，您可以安装JDK v11或使用以下PowerShell脚本步骤:

- task: PowerShell@2
  displayName: 'Download and Install Java v11'
  inputs:
    targetType: 'inline'
    script: |
      [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
      $Command = "c:\jdk-11.0.15_windows-x64_bin.exe"
      $Parms = "/s"
      Write-Host [System.IO.File]::Exists($Command)
      if ([System.IO.File]::Exists($Command)) {
        Write-Host 'Downloading Java11.exe'      
        Invoke-WebRequest https://yourOwnUrl.com/jdk-11.0.15_windows-x64_bin.exe -OutFile $Command
      }
      Write-Host [System.IO.File]::Exists($Command)
      & "$Command" $Prms
      [System.Environment]::SetEnvironmentVariable("JAVA_HOME", "C:\Program Files\Java\jdk-11.0.15")
      [System.Environment]::SetEnvironmentVariable("Path", [System.Environment]::GetEnvironmentVariable('Path', [System.EnvironmentVariableTarget]::Machine) + ";$($env:JAVA_HOME)\bin")

如果您正在使用IntelliJ IDEA并遇到此错误，请尝试此操作。

1. Command + , (Open Preferences)
2. Build, Execution, Deployment > Build Tools > Gradle
3. Gradle JVM > Change it to a proper version

通过导航到“设置->构建，执行，部署>构建工具> Gradle”来检查IDE中配置的Java版本

Sonarqube也有同样的问题

已经由最新版本的Java运行时(类文件版本55.0)编译，这个版本的Java运行时只识别类文件版本52.0

Sonarqube与AzureDevOps错误输出:

INFO: SonarScanner 4.6.2.2472 INFO: Java 1.8.0_231 Oracle Corporation (32-bit) INFO: Windows Server 2016 10.0 x86 INFO: User cache: C:\Windows\system32\config\systemprofile.sonar\cache INFO: Scanner configuration file: C:\agent_a_work_tasks\SonarQubePrepare_15b84ca1-b62f-4a2a-a403-89b77a063157\5.4.0\classic-sonar-scanner-msbuild\sonar-scanner-4.6.2.2472\bin..\conf\sonar-scanner.properties INFO: Project root configuration file: C:\agent_a_work\189.sonarqube\out\sonar-project.properties INFO: Analyzing on SonarQube server 9.4.0 INFO: Default locale: "en_AU", source code encoding: "windows-1252" (analysis is platform dependent) INFO: ------------------------------------------------------------------------ INFO: EXECUTION FAILURE INFO: ------------------------------------------------------------------------ INFO: Total time: 0.405s INFO: Final Memory: 3M/15M ##[error]ERROR: 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 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0

我在Sonarcube服务器上安装了Java v11，但错误提示它的构建代理没有Java v11。

我决定将Java v12 bin路径添加到环境变量路径中，以便检测它。重要的是，这需要在构建代理上完成:

对于托管生成代理，您可以安装JDK v11或使用以下PowerShell脚本步骤:

- task: PowerShell@2
  displayName: 'Download and Install Java v11'
  inputs:
    targetType: 'inline'
    script: |
      [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
      $Command = "c:\jdk-11.0.15_windows-x64_bin.exe"
      $Parms = "/s"
      Write-Host [System.IO.File]::Exists($Command)
      if ([System.IO.File]::Exists($Command)) {
        Write-Host 'Downloading Java11.exe'      
        Invoke-WebRequest https://yourOwnUrl.com/jdk-11.0.15_windows-x64_bin.exe -OutFile $Command
      }
      Write-Host [System.IO.File]::Exists($Command)
      & "$Command" $Prms
      [System.Environment]::SetEnvironmentVariable("JAVA_HOME", "C:\Program Files\Java\jdk-11.0.15")
      [System.Environment]::SetEnvironmentVariable("Path", [System.Environment]::GetEnvironmentVariable('Path', [System.EnvironmentVariableTarget]::Machine) + ";$($env:JAVA_HOME)\bin")

IDE: Eclipse 2021-09

这是因为您使用java版本9编译了代码并安装了java8。您不必更新来解决此问题。

右键单击项目>属性> Java Compiler >取消勾选-启用 项目特定设置>配置工作空间设置> tick-Use 默认合规设置>应用并关闭。

现在您的代码应该被正确执行了。

在Intellij中构建Jar后，我在控制台遇到了类似的问题。使用Java配置更新到新版本(Windows -> Configure Java -> update -> update Now)不起作用，并且停留在1.8版本(Java 8)。

为了在本地切换到最新版本，我必须从https://www.oracle.com/uk/java/technologies/javase-jdk15-downloads.html安装Java 15 JDK，并将其添加到我的Java运行时环境设置中。