Kettle7.1在window启动报错

实验环境：

window10 x64

kettle7.1 pdi-ce-7.1.0.0-12.zip

错误现象：

a java exception has occurred

问题解决：

运行调试工具

data-integration\SpoonDebug.bat //调试错误的，根据错误明确知道为何启动不了，Y--Y---Y ,在根目录下生成SpoonDebug.txt文件

根据调试日志

DEBUG: Using JAVA_HOME
DEBUG: _PENTAHO_JAVA_HOME=C:\Java\jdk1.7.0_80
DEBUG: _PENTAHO_JAVA=C:\Java\jdk1.7.0_80\bin\java.exeD:\ETL-Kettle\data-integration>"C:\Java\jdk1.7.0_80\bin\java.exe"  "-Xms1024m" "-Xmx2048m" "-XX:MaxPermSize=256m" "-Dhttps.protocols=TLSv1,TLSv1.1,TLSv1.2" "-Djava.library.path=libswt\win64" "-DKETTLE_HOME=" "-DKETTLE_REPOSITORY=" "-DKETTLE_USER=" "-DKETTLE_PASSWORD=" "-DKETTLE_PLUGIN_PACKAGES=" "-DKETTLE_LOG_SIZE_LIMIT=" "-DKETTLE_JNDI_ROOT=" -jar launcher\pentaho-application-launcher-7.1.0.0-12.jar -lib ..\libswt\win64  /level:Debug 
java.lang.UnsupportedClassVersionError: org/pentaho/commons/launcher/Launcher : Unsupported major.minor version 52.0at 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)
Exception in thread "main"