救命啊。帮我看看，问题出在哪里。我都弄了一天了，就是不知道问题出在哪里？

Question

你得把出错信息打出来呀！不然如何看？
ResultSet rs=stmt.executeQuery("select *"+"from student");
"select *"+"from student" ->"select * from student"

Answer 1

这个我也改了。可是问题还是这样。出错是：HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: /student2.jsp(5,0) Unterminated <%@ page tag
at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:94)
at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:428)
at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:170)
at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:388)
at org.apache.jasper.compiler.Parser.parseElements(Parser.java:795)
at org.apache.jasper.compiler.Parser.parse(Parser.java:122)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:199)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:153)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:227)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:369)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:473)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:190)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:700)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)

Answer 2

正确的代码应该是这样的:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>用JSP访问数据库</title></head>
<body>
<%@ page language="java"
import="java.sql.*"
import ="java.util.*"
import ="java.io.*"
import="java.text.*"
buffer="20kb"
%>
<%
Connection conn=null;
 try{
 Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
 conn=DriverManager.getConnection("jdbc:odbc:student","","");
 Statement stmt=conn.createStatement();
 ResultSet rs=stmt.executeQuery("select *"+"from student");
%>
 <table border="1">
 <tr>
 <th>学号</th>
 <th>姓名</th>
 <th>性别</th>
 <th>年龄</th>
 </tr>
 <%
 while(rs.next())
  {
     out.println("<tr>\n<td>"+rs.getString("no")+"</td>");
     out.println("<td>"+rs.getString("name")+"</td>");
     out.println("<td>"+rs.getString("sex")+"</td>");
      out.println("<td>"+rs.getString("age")+"</td>\n</tr>");
}
//out.print("</table>");
rs.close();
}
catch(IOException ioe){
  out.println(ioe.getMessage());
}
catch(SQLException sqle){
   out.println(sqle.getMessage());
}
catch(ClassNotFoundException cnfe){
   out.println(cnfe.getMessage());
}
catch(Exception e){
   out.println(e.getMessage());
}
finally{
  try{
   if(conn!=null)
{
conn.close();
  }
}
catch(SQLException sqle)
{
out.println(sqle.getMessage());
  }
}
  %>
</table>
</body>
</html>

Answer 3

在你的page指令中少了一个 %>
page指令 应该是<%@ page import=" " contentType=" " %>

Answer 4

<%@ page language="java" 
import="java.sql.*"
import ="java.util.*" 
import ="java.io.*" 
import="java.text.*" 
buffer="20kb"改成
<%@ page language="java" import="java.sql.*, java.util.*, java.io.*, java.text.*" buffer="20kb" %>

Answer 5

出错是：HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: /student2.jsp(5,0) Unterminated <%@ page tag
========================
/student2.jsp(5,0) Unterminated <%@ page tag错误提示写的多明白阿，没有结束的<%@ page 标签