无法加载com.microsoft.sqlserver.jdbc.SQLServerDriver类?

问题描述

尝试连接到SQL Server 2008数据库时遇到问题，这是一个完整的例外:

I'm having an issue while trying to connect to an SQL Server 2008 database, here is the complete exception :

java.lang.UnsupportedClassVersionError: Bad version number in .class file (unable to load class com.microsoft.sqlserver.jdbc.SQLServerDriver)
    org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2531)
    org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1010)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1483)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361)
    java.lang.ClassLoader.loadClassInternal(Unknown Source)
    java.lang.Class.forName0(Native Method)
    java.lang.Class.forName(Unknown Source)
    ma.ancfcc.dao.ConnexionSigest.getConnection(ConnexionSigest.java:120)
    ma.ancfcc.action.VerifyLoginAction.execute(VerifyLoginAction.java:70)
    org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
    org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
    org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
    org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

异常指向此行代码:

private static String DRIVER_SQLSERVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";

我该如何解决?

推荐答案

当您尝试加载使用比运行应用程序的Java版本更高的Java版本编译的类时，会引发此异常.

This exception is thrown when you try to load a class that was compiled with higher version of Java than the one you are running your application with.

请参见 UnsupportedClassVersionError

1. 使用java -version
检查运行应用程序的JVM的版本
2. 按照-使用javap -verbose com.microsoft.sqlserver.jdbc.SQLServerDriver
3. 如果jar打算与更高版本的Java一起使用，则可以:
   • 使用更高版本的JVM来运行应用程序
   • 下载旧版驱动程序

1. check the version of JVM you run your app with using java -version
2. check the version of class file as suggested in how to check the jdk version used to compile a .class file - using javap -verbose com.microsoft.sqlserver.jdbc.SQLServerDriver
3. If jar is intended to use with higher version of Java, you can either:
   • use higher version of JVM to run the app
   • download older version of driver

这篇关于无法加载com.microsoft.sqlserver.jdbc.SQLServerDriver类?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！