TravisCI与SonarQube集成导致不支持major.minor版本52.0

Question

我正在NodeJS中运行一个小项目。我正在使用TravisCI来帮助持续集成。作为持续集成的一部分，我想与sonarqube集成来分析代码。

这是travis.yml

language: node_js 
node_js: 
    - "6" 
addons: 
    sonarqube: true 
env: 
    SONAR_TOKEN: b9a731b8b00b0cff2299cc21b103855570522cea 
script: 
    # other script steps might be done before running the actual SonarQube analysis 
    - sonar-scanner -Dsonar.login=b9a731b8b00b0cff2299cc21b103855570522cea 

这是sonarqube属性文件：

# must be unique in a given SonarQube instance 
sonar.projectKey=sheidaei:coffeeclub 
# this is the name and version displayed in the SonarQube UI. Was mandatory prior to SonarQube 6.1. 
sonar.projectName=Coffee Club 
sonar.projectVersion=0.0.1 
  
# Path is relative to the sonar-project.properties file. Replace "\" by "/" on Windows. 
# Since SonarQube 4.2, this property is optional if sonar.modules is set.  
# If not set, SonarQube starts looking for source code from the directory containing  
# the sonar-project.properties file. 
sonar.sources=. 
  
# Encoding of the source code. Default is default system encoding 
#sonar.sourceEncoding=UTF-8 

您可以在github项目@https://github.com/sheidaei/coffeeclub

后自动整个源建立在TravisCI，我总是与sonarqube出现错误。它告诉我，它与major.minor版本有关。我不知道如何解决这个问题，以及如何强制为travisci或sonarqube版本的java。任何想法/帮助表示赞赏。

Preparing SonarQube Scanner CLI 
Archive: /home/travis/.sonarscanner/sonar-scanner.zip 
    creating: /home/travis/.sonarscanner/sonar-scanner-2.8/ 
    inflating: /home/travis/.sonarscanner/sonar-scanner-2.8/bin/sonar-scanner.bat 
    inflating: /home/travis/.sonarscanner/sonar-scanner-2.8/bin/sonar-scanner-debug 
    inflating: /home/travis/.sonarscanner/sonar-scanner-2.8/lib/sonar-scanner-cli-2.8.jar 
    inflating: /home/travis/.sonarscanner/sonar-scanner-2.8/bin/sonar-scanner 
    inflating: /home/travis/.sonarscanner/sonar-scanner-2.8/conf/sonar-scanner.properties 
    inflating: /home/travis/.sonarscanner/sonar-scanner-2.8/bin/sonar-runner.bat 
    inflating: /home/travis/.sonarscanner/sonar-scanner-2.8/bin/sonar-runner 
    inflating: /home/travis/.sonarscanner/sonar-scanner-2.8/bin/sonar-scanner-debug.bat 
$ export SONAR_SCANNER_HOME=$HOME/.sonarscanner/sonar-scanner-2.8 
sonarqube.run 
Preparing SonarQube Scanner parameters 
0.22s$ sonar-scanner -Dsonar.login=b9a731b8b00b0cff2299cc21b103855570522cea 
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/sonarsource/scanner/cli/Main : Unsupported major.minor version 52.0 
    at java.lang.ClassLoader.defineClass1(Native Method) 
    at java.lang.ClassLoader.defineClass(ClassLoader.java:800) 
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) 
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) 
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71) 
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361) 
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425) 
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358) 
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) 
The command "sonar-scanner -Dsonar.login=b9a731b8b00b0cff2299cc21b103855570522cea" exited with 1. 
Done. Your build exited with 1. 

Answer 1

您必须升级到Java 8见http://www.sonarqube.org/sonar-ecosystem-upgrades-to-java-8/

（或者，如文档指出，你可以使用SQ的早期，Java 7的兼容版本。）