Java访问Solr问题: Unsupported major.minor version 52.0

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Solr版本：6.4.1 需要JDK 1.8.x以上。

JDK 版本过低：

Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/solr/common/params/SolrParams : Unsupported major.minor version 52.0at java.lang.ClassLoader.defineClass1(Native Method)at java.lang.ClassLoader.defineClass(Unknown Source)at java.security.SecureClassLoader.defineClass(Unknown Source)at java.net.URLClassLoader.defineClass(Unknown Source)at java.net.URLClassLoader.access$100(Unknown Source)at java.net.URLClassLoader$1.run(Unknown Source)at java.net.URLClassLoader$1.run(Unknown Source)at java.security.AccessController.doPrivileged(Native Method)at java.net.URLClassLoader.findClass(Unknown Source)at java.lang.ClassLoader.loadClass(Unknown Source)at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)at java.lang.ClassLoader.loadClass(Unknown Source)at java.lang.Class.getDeclaredMethods0(Native Method)at java.lang.Class.privateGetDeclaredMethods(Unknown Source)at java.lang.Class.getMethod0(Unknown Source)at java.lang.Class.getMethod(Unknown Source)at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

升级JDK版本即可解决此问题！

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