信息: validateJarFile(C:\Users\Administrator\Workspaces\MyEclipse 10\.metadata\.me_tcat\webapps\JFinalUIBV2\WEB-INF\lib\servlet-api-3.1.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class2017-11-21 18:16:34 org.apache.tomcat.util.modeler.Registry registerComponent嚴重: Null component Catalina:type=JspMonitor,name=jsp,WebModule=//localhost/JFinalUIBV2,J2EEApplication=none,J2EEServer=none2017-11-21 18:16:34 org.apache.catalina.startup.HostConfig deployDirectory嚴重: Error deploying web application directory JFinalUIBV2java.lang.UnsupportedClassVersionError: com/jfinal/core/JFinalFilter : Unsupported major.minor version 51.0at java.lang.ClassLoader.defineClass1(Native Method)