Question

jsp请求数据库连接时出异常，帮忙解决以下，谢谢

请问哪位师傅能告诉我以下异常是什么意思?
(工具jBuilder,数据库SQLServer,jsp页面请求时发生异常,我肯定代码没问题,是哪里配置出错了吗?急!Tomcat5.5)

java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Error establishing socket.
at com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source)
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.microsoft.jdbc.sqlserver.tds.TDSConnection.<init>(Unknown Source)
at com.microsoft.jdbc.sqlserver.SQLServerImplConnection.open(Unknown Source)
at com.microsoft.jdbc.base.BaseConnection.getNewImplConnection(Unknown Source)
at com.microsoft.jdbc.base.BaseConnection.open(Unknown Source)
at com.microsoft.jdbc.base.BaseDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at org.apache.jsp.verifyLoginPage_jsp._jspService(org.apache.jsp.verifyLoginPage_jsp:6
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)

Answer 1

JDBC驱动问题

安装JDBC

执行ms_jdbc_setup.exe可执行文件，一切只需要点击下一步，至到出现finish按钮，完成安装。

注：

(1) ms_JDBC_setup默认安装路径为：c:\Program Files\Microsoft SQL Server 2000 Driver for JDBC

(2)此版(Version 2.2.0022)本仅支持Microsoft SQL Server 2000 Driver for JDBC

(3)安装目录\lib\下的三个jar文件即是我们要的JDBC驱动核心

msbase.jar

mssqlserver.jar

msutil.jar

将以上三个jar文件加入到环境变量中去

classpath：
d:\webserver\lib\msbase.jar;d:\webserver\lib\mssqlserver.jar;d:\webserver\lib\msutil.jar

注：也可以省事的将以上三个文件拷贝至你的jvm机所在的JAVA_HOME\jre\lib\ext目录下，不过不建议这么做。

Answer 2

换个驱动包试试~!

Answer 3

把驱动包放到tomcate里的lib目录下就好了