请问一下数据库连接的问题。。

请问一下数据库连接的问题，， 我总把连接数据库的代码统一的放在一个文件里，，比如说叫connectdb.jsp 可是总是出现错误。。。应该怎么去改，，，错误信息如下： [求助]jsp+msSql连接错误

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: 2 in the jsp file: /incoming/connectdb.jsp
Generated servlet error:
D:\Program Files\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\news\org\apache\jsp\incoming\connectdb_jsp.java:48: cannot resolve symbol
symbol  : class Connection 
location: class org.apache.jsp.incoming.connectdb_jsp
  Connection con=DriverManager.getConnection(url,"sa","123");
  ^


An error occurred at line: 2 in the jsp file: /incoming/connectdb.jsp
Generated servlet error:
D:\Program Files\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\news\org\apache\jsp\incoming\connectdb_jsp.java:48: cannot resolve symbol
symbol  : variable DriverManager 
location: class org.apache.jsp.incoming.connectdb_jsp
  Connection con=DriverManager.getConnection(url,"sa","123");
                 ^


An error occurred at line: 2 in the jsp file: /incoming/connectdb.jsp
Generated servlet error:
D:\Program Files\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\news\org\apache\jsp\incoming\connectdb_jsp.java:49: cannot resolve symbol
symbol  : class Statement 
location: class org.apache.jsp.incoming.connectdb_jsp
  Statement
  ^


An error occurred at line: 2 in the jsp file: /incoming/connectdb.jsp
Generated servlet error:
D:\Program Files\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\news\org\apache\jsp\incoming\connectdb_jsp.java:50: cannot resolve symbol
symbol  : variable ResultSet 
location: class org.apache.jsp.incoming.connectdb_jsp
smt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
                        ^


An error occurred at line: 2 in the jsp file: /incoming/connectdb.jsp
Generated servlet error:
D:\Program Files\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\news\org\apache\jsp\incoming\connectdb_jsp.java:50: cannot resolve symbol
symbol  : variable ResultSet 
location: class org.apache.jsp.incoming.connectdb_jsp
smt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
                                                        ^


An error occurred at line: 2 in the jsp file: /incoming/connectdb.jsp
Generated servlet error:
D:\Program Files\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\news\org\apache\jsp\incoming\connectdb_jsp.java:51: cannot resolve symbol
symbol  : class ResultSet 
location: class org.apache.jsp.incoming.connectdb_jsp
  ResultSet rs;
  ^
6 errors



	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
	org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
	org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:412)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

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能把程序发一下么。。
----------------解决方案--------------------------------------------------------

应该是你的很多类都没有import进来哈
才会出现什么目标不能确定拉等问题

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