tomcat-java.lang.unsupportedclassversionerror:unsupported Major.minor version 51.0 (unable to load class Com.microsoft . Sqlserver.jdbc.SQLS

Today, when using Tomcat to connect to SQL Server Enterprise, error:

HTTP Status 500-servlet execution threw an exceptiontype Exception reportmessage servlets execution threw an exceptiondes Cription the server encountered an internal error that prevented it from fulfilling this request.exceptionjavax.servlet.Se Rvletexception:servlet execution threw an exceptionspt.servlet.filter.EncodingFilter.doFilter (Encodingfilter.java : () Root causejava.lang.unsupportedclassversionerror:com/microsoft/sqlserver/jdbc/sqlserverdriver:unsupported Major.minor version 51.0 (unable to load class Com.microsoft.sqlserver.jdbc.SQLServerDriver) Org.apache.catalina.loader.WebappClassLoader.findClassInternal (webappclassloader.java:2961) Org.apache.catalina.loader.WebappClassLoader.findClass (webappclassloader.java:1210) Org.apache.catalina.loader.WebappClassLoader.loadClass (webappclassloader.java:1690) Org.apache.catalina.loader.WebappClassLoader.loadClass (webappclassloader.java:1571) Java.lang.ClassLoader.loadClassInternal (classloader.java:320) JAVA.LANG.CLASS.FORNAME0 (Native MethOD) java.lang.Class.forName (class.java:169) spt.server.jdbc.db.BasicDB.getConnection (basicdb.java:260) Spt.server.jdbc.db.BasicDB.getPreparedStatement (basicdb.java:268) Spt.server.jdbc.db.BasicDB.getAQIDayByCityCodeAndDate (basicdb.java:136) Spt.service.AQIDayService.getAQIDay ( aqidayservice.java:33) Spt.servlet.JsonServlet.doPost (jsonservlet.java:34) Spt.servlet.JsonServlet.doGet ( jsonservlet.java:53) Javax.servlet.http.HttpServlet.service (httpservlet.java:620) Javax.servlet.http.HttpServlet.service (httpservlet.java:727) Spt.servlet.filter.EncodingFilter.doFilter ( ENCODINGFILTER.JAVA:24) Note the full stack trace of the root cause are available in the Apache tomcat/7.0.57 logs. Apache tomcat/7.0.57

The JDK version number corresponds to:

J2SE 7 = Wuyi (0x33 hex),

J2SE 6.0 = (0x32 hex),

J2SE 5.0 = (0x31 hex),

JDK 1.4 = 0x30 Hex,

JDK 1.3 = (0x2F hex),

JDK 1.2 = 0x2e Hex,

JDK 1.1 = (0x2D hex).

As a result, the above error is due to Jtds needs jdk7, and the JDK version you are using is not jdk7.

Ref:http://shalousoft.com/go_newsforum.action?op=d3a91dac-6b7c-11e3-8e31-5254001578d1

tomcat-java.lang.unsupportedclassversionerror:unsupported Major.minor version 51.0 (unable to load class Com.microsoft . Sqlserver.jdbc.SQLS