Unsupported major.minor version 52.0
2017-12-14 09:46
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Unsupported major.minor version 52.0
严重: Exception starting filter struts2 java.lang.UnsupportedClassVersionError: weka/classifiers/functions/supportVector/Kernel : Unsupported major.minor version 52.0
一般是jdk版本的问题，换成高版本之后就没问题了。亲身体验，用jdk1.6出现这个Bug，换成1.8之后就好了。
步骤如下：
首先在电脑上安装jdk1.8相关的版本，然后打开MyEclipse，找到MyEclipse->Preferences->MyEclipse->Servers，然后分别找到Tomcat->Tomcat (4,5,6).x->JDK和Integrated Sandbox->Myeclipse Tomcat->JDK，然后将右侧的Tomcat JDK name选择电脑安装的高版本jdk路径就好，如下图：
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