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作者 JSP 程序运行出错.请各位高手帮忙
njlxp





发贴: 1
于 2005-09-23 09:36 user profilesend a private message to userreply to postsearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
请尽量使用准确的文字描述作为标题


<%@ page import="java.sql.*"%>
<%@ page import="java.io.*"%>
<%
java.sql.Connection objconn=null; //定义连接语句
java.sql.Statement smt=null; //定义连接状态
java.sql.ResultSet objtr=null; //定义查询结果集

public void jspInit()
{
try
{
  /*
  String dbpath=application.getRealPath(request.getRequestURI()); //取得当前文件的绝对路径
  dbpath=new java.io.File(dbpath).getParent(); //取得当前文件的目录路径(父路径)
dbpath=dbpath.replace("'\'","'/'"); //替换路径中的\为/
dbpath=dbpath + "/db/keepwathc.mdb"; //加上数据库文件的完整路径
out.print(dbpath);
return;
  */
Class.forName("sun.jdbc.odbc.jdbcodbcdriver");
objconn=DriverManager.getConnection("jdbc:odbc:Driver={microsoft.Access.Driver (*.mdb)};DBQ=D:/tomcat/webapps/keepwatch/db","","");
   smt=objconn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
}
catch(Exception ex)
{
out.print(ex.tostring);
}
}
public void jspDestory()
{
try
  {
   smt.close(); //关闭Statement对像
   objconn.close(); //关闭Connection对像
   ojbtr.close(); //关闭ResultSet 对象
  }
  catch(Exception ex)
  {
   out.print(ex.tostring);
  }
}
%>

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

An error occurred at line: 3 in the jsp file: /getconn.jsp
Generated servlet error:
D:\jakarta-tomcat-5.5.7\work\Catalina\localhost\keepwatch\org\apache\jsp\index_jsp.java:59: illegal start of expression
public void jspInit()
^
1 error


YuLimin edited on 2006-09-15 21:54

作者 Re:程序运行出错.请各位高手帮忙 [Re:njlxp]
zcjl

涅槃



发贴: 537
于 2005-09-23 10:38 user profilesend a private message to userreply to postsearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
在jsp里面定义方法,必须使用<%! %>才行
不过不建议把方法定义在jsp里,应该封装到一个class,然后从jsp中调用

下面这个帖子可作为参考
http://community.csdn.net/Expert/topic/4290/4290514.xml?temp=.9499933


zcjl edited on 2005-09-24 15:53

作者 Re:JSP 程序运行出错.请各位高手帮忙 [Re:njlxp]
dragondog2000





发贴: 3
于 2005-09-24 15:38 user profilesend a private message to userreply to postsearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
那是一个方法,必须经过事先定义才能使用!
同意楼上的观点!





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