tomcat cannot be resolved to a type

Ncrazy 2009-07-09 03:39:05

tomcat运行jsp文件显示错误

An error occurred at line: 2 in the jsp file: /saveMsg.jsp
messageBean cannot be resolved to a type
1: <%@ page import="java.sql.*" %>
2: <jsp:useBean id="ub" class="messageBean"/>
3:
4: <html>
5: <head>

bean代码



import java.sql.*;

import java.util.*;







public class messageBean

{

	private static Statement sta;

	private final static String dbURL="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=MessageBoard";

	private final static String dbUSR="sa";

	private final static String dbPSW="21259520q";

	private Connection con=null;

	private String sqlStr=null;

	private ResultSet rs=null;

	

	//连接数据库

	public void connMsg()

	{

		try

		{

			Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();

			

			con=DriverManager.getConnection(dbURL,dbUSR,dbPSW);

			sta=con.createStatement();

		}

		catch(Exception e)

		{

			e.printStackTrace();

			

		}

	}

	

	//关闭数据库

	public void closeMsg()

	{

		try

		{

			con.close();

			sta.close();

		}

		catch(Exception e)

		{

			

		}

	}

	

	//增加数据库成员

	public void setMsg(String l_name,String l_content,String l_ip)

	{

		connMsg();

		

	try

		{

			sqlStr="insert into message (name,content,ip) values('"+l_name+"','"+l_content+"','"+l_ip+"')";

			sta.executeUpdate(sqlStr);

		

			

			closeMsg();		

		}

		catch(Exception e)

		{

			e.printStackTrace();

			closeMsg();

		}	



	}

}

JSP文件出错的行是
<%@ import "java.sql.*"%>
<jsp:useBean id=ub class=messageBean/>

<html><body>

<%
String a="asfd";
String b="sfda";
String c="sdfsdf";
ub.setMsg(a,b,c)
%>

</body>
</html>

...全文

602 8 打赏收藏转发到动态举报

写回复

用AI写文章

8 条回复

切换为时间正序

请发表友善的回复…

发表回复

zl3450341 2009-07-09

打赏
举报

学习了楼上几位说的很对

Ncrazy 2009-07-09

打赏
举报

额。问题已解决，把bean文件加入包中，class=包.bean 就OK了谢谢大家了

Ncrazy 2009-07-09

打赏
举报

JSP页面就是上面那一点点啊，哪里有什么错误啊
org.apache.jasper.JasperException: Unable to compile class for JSP

zuijiejina 2009-07-09

打赏
举报

Unable to compile class for JSP:
这个是页面有错误吧

Ncrazy 2009-07-09

打赏
举报

直接一个class文件，没有包呢。。。
org.apache.jasper.JasperException: Unable to compile class for JSP:

现在又显示这个了。。。

抬头望远，低头沉思 2009-07-09

打赏
举报

[Quote=引用楼主 Ncrazy 的帖子:]
tomcat运行jsp文件显示错误

An error occurred at line: 2 in the jsp file: /saveMsg.jsp
messageBean cannot be resolved to a type
1: <%@ page import="java.sql.*" %>
2: <jsp:useBean id="ub" class="messageBean"/>
3:
4: <html>
5: <head>

bean代码

Java code
import java.sql.*;
import java.util.*;

public class messageBean
{
private static Statement sta;
private…
[/Quote]
class="messageBean"把该类所在的包也要加上
不用在jsp页面中使用import来导入

uramiyahonpo 2009-07-09