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电梯直达

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发表于 2006-03-12 22:02 |只看该作者 |倒序浏览

JDK正常，JSP正常，MYSQL正常。未设置classpath。已将mysql-connector-java-3.1.12-bin.jar复制到多个lib目录下。

我的测试程序：
<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="java.sql.*" %>
<HTML>
<BODY>
<%
string driver="org.gjt.mm.mysql.driver";
string url="jdbc:mysql://localhost:3306/";
string userid="root";
string passwd="chen";

try{
   Class.forName(driver);
   }
catch(Exception e){
      out.println("无法载入"+driver+"驱动程序!"

;
      e.printStackTrace();
}

try {
      Connection con=DriverManager.getConnection(url,userid,passwd);
      if(!con.isClosed())
         out.println("成功连接数据库!"

;
         con.close();
      }
catch(SQLException SQLe){
      out.println("无法连接数据库!"

;
}

%>
</BODY>
</HTML>

错误信息：
type Exception report

message

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

exception

org.apache.jasper.JasperException: Unable to compile class for JSP

An error occurred at line: 5 in the jsp file: /jdbc.jsp
Generated servlet error:
string cannot be resolved to a type

An error occurred at line: 5 in the jsp file: /jdbc.jsp
Generated servlet error:
string cannot be resolved to a type

An error occurred at line: 5 in the jsp file: /jdbc.jsp
Generated servlet error:
string cannot be resolved to a type

An error occurred at line: 5 in the jsp file: /jdbc.jsp
Generated servlet error:
string cannot be resolved to a type

org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

org.apache.jasper.JasperException: Unable to compile class for JSP

An error occurred at line: 5 in the jsp file: /jdbc.jsp
Generated servlet error:
string cannot be resolved to a type

An error occurred at line: 5 in the jsp file: /jdbc.jsp
Generated servlet error:
string cannot be resolved to a type

An error occurred at line: 5 in the jsp file: /jdbc.jsp
Generated servlet error:
string cannot be resolved to a type

An error occurred at line: 5 in the jsp file: /jdbc.jsp
Generated servlet error:
string cannot be resolved to a type

org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:32

org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:409)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:297)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:303)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.15 logs.