这是servlet连接数据库的一个报错， Servlet execution threw an exception

Posted 2023-05-12

HTTP Status 500 -

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type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet execution threw an exception

root cause

java.lang.NoClassDefFoundError: com/microsoft/jdbc/base/BaseDriver
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(Unknown Source)
java.security.SecureClassLoader.defineClass(Unknown Source)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1817)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1325)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
java.lang.ClassLoader.loadClassInternal(Unknown Source)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Unknown Source)
org.olive.DBServlet.doGet(DBServlet.java:42)
javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.13 logs.

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Apache Tomcat/6.0.13

参考技术A com/microsoft/jdbc/base/BaseDriver是这样的吗？你要换成com.microsoft.jdbc.base.BaseDriver试试吧，或者就是说你这个路径写错了吧追问

com.microsoft.jdbc.sqlserver.SQLServerDriver
在XML里面

参考技术B 有可能是你连接驱动写错了！看看Class.forName(“”).newInstance();驱动路径写错了没！追问

Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
这个是这样写的！

参考技术C 提交方式错误吧 参考技术D 少了jar包吧本回答被提问者采纳

IDEA配置IDEA连接mysql报错Server returns invalid timezone. Go to 'Advanced' tab and set 'serv

报错：

Server returns invalid timezone. Go to ‘Advanced‘ tab and set ‘serverTimezone‘ property manually.

参考：

https://blog.csdn.net/liuqiker/article/details/102455077

加上

https://blog.csdn.net/ITMan2017/article/details/100601438