菜鸟问题,希望帮助
<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="java.sql.*,java.util.*"%>
<%!
Connection conn;
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
conn=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb","sa","123456");
}
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charsetGB2312">
<title>dbconn</title>
</head>
<body>
<%
Statement stmt=conn.createStatement();
String sql="select * from [USERS]";
ResultSet rs=stmt.executeQuery(sql);
while (rs.next()) {%>
第一个字段内容为:<%=rs.getString("username")%>
第二个字段内容为:<%=rs.getString("password")%>
第二个字段内容为:<%=rs.getString("Intro")%><br>
<%}%>
<%out.print("数据库操作成功!");%>
<%rs.close();
stmt.close();
conn.close();%>
</body>
</html>
改成下面的话就出错:<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="java.sql.*,java.util.*"%>
<%! //提示出错的地方
public Connection conndb(){
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
Connection conn=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb","sa","123456");
return conn;
}
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charsetGB2312">
<title>dbconn</title>
</head>
<body>
<%
Connection conn;
conn=conndb();
Statement stmt=conn.createStatement();
String sql="select * from [USERS]";
ResultSet rs=stmt.executeQuery(sql);
while (rs.next()) {%>
第一个字段内容为:<%=rs.getString("username")%>
第二个字段内容为:<%=rs.getString("password")%>
第二个字段内容为:<%=rs.getString("Intro")%><br>
<%}%>
<%out.print("数据库操作成功!");%>
<%rs.close();
stmt.close();
conn.close();%>
</body>
</html>
------解决方案--------------------楼主试试,没验证过
Java code
<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="java.sql.*,java.util.*"%>
<%! //提示出错的地方
class test{
public static Connection conndb(){
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
Connection conn=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb","sa","123456");
return conn;
}
}
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charsetGB2312">
<title>dbconn </title>
</head>
<body>
<%
Connection conn;
conn=test.conndb();
Statement stmt=conn.createStatement();
String sql="select * from [USERS]";
ResultSet rs=stmt.executeQuery(sql);
while (rs.next()) {%>
第一个字段内容为: <%=rs.getString("username")%>
第二个字段内容为: <%=rs.getString("password")%>
第二个字段内容为: <%=rs.getString("Intro")%> <br>
<%}%>
<%out.print("数据库操作成功!");%>
<%rs.close();
stmt.close();
conn.close();%>
</body>
</html>
------解决方案--------------------<