关于Java连接MySql数据库的问题
我是刚学Jsp的，我用jsp简单的连接MySQL数据库，但是却出现了一下问题：
**   BEGIN   NESTED   EXCEPTION   **  

java.io.IOException
MESSAGE:   Unexpected   end   of   input   stream

STACKTRACE:

java.io.IOException:   Unexpected   end   of   input   stream
at   com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:1096)
at   com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:626)
at   com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)
at   com.mysql.jdbc.Connection. <init> (Connection.java:491)
at   com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
at   java.sql.DriverManager.getConnection(DriverManager.java:525)
at   java.sql.DriverManager.getConnection(DriverManager.java:171)
at   org.apache.jsp.testjdbc_jsp._jspService(org.apache.jsp.testjdbc_jsp:58)
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)


**   END   NESTED   EXCEPTION   **

at   com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:699)
at   com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)
at   com.mysql.jdbc.Connection. <init> (Connection.java:491)
at   com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
at   java.sql.DriverManager.getConnection(DriverManager.java:525)
at   java.sql.DriverManager.getConnection(DriverManager.java:171)
at   org.apache.jsp.testjdbc_jsp._jspService(org.apache.jsp.testjdbc_jsp:58)
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(JspS