jsp连接access两种方式

<%@ page contentType="text/html; charset=gb2312" language="java"

import="java.sql.*"%>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

<%

/*********************************

********* JDBC_ODBC连接Access数据库，不需要设置数据源

// ******* 数据库连接代码　开始 *****

//异常处理语句

try

{

//以下几项请自行修改

String spath = "data/test.mdb";//Access 数据库路径

String dbpath = application.getRealPath(spath);//转化成物理路径

String dbname = ""; //Acvess 数据库用户名，没有则为空

String user = ""; //Access 数据库密码，没有则为空

//数据库连接字符串

String url ="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ="+dbpath;

//加载驱动程序

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

//建立连接

Connection conn= DriverManager.getConnection(url);

//创建语句对象

Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);

// **** 数据库连接代码　结束 ******

//********* 测试数据代码开始 ******

//请在数据库中建立username表，表中建立两个字段uid和pwd,类型为文本型

String sql = "select * from username";

ResultSet rs = stmt.executeQuery(sql);

while(rs.next())

{

out.print("用户名:" + rs.getString("uid"));

out.print(" 密码:" + rs.getString("pwd") + "<br>");

}

out.print("<br>恭喜你！数据库连接成功！");

rs.close(); //关闭记录集对象

stmt.close(); //关闭语句对象

conn.close(); //关闭连接对象

}catch(Exception e){

out.print("数据库连接错误！,错误信息如下：<br>");

out.print(e.getMessage());

}

//******* 测试数据代码结束 *******

%>

========================================================================使用javabean来连接

package conn; //导入包

import java.sql.*; //导入数据库操作的类

public class DBConnAccess //构造方法，初始化

{

private Connection conn; //连接对象

private Statement stmt; //语句对象

private ResultSet rs; //结果集对象

private String accessdriver; //保存Access驱动程序字符串

private String accessURL; //保存Access连接字符串

public DBConnAccess()

{

//Access驱动程序

accessdriver = "sun.jdbc.odbc.JdbcOdbcDriver";

//连接字符串

accessURL = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=";

conn = null;

}

//该方法从参数得到数据库路径，并加到连接字符串后面,然后再建立连接

public Connection getConnToAccess(String dbpath){

try{

accessURL=accessURL+dbpath;

Class.forName(accessdriver);

conn = DriverManager.getConnection(accessURL);

}catch(Exception e){

System.out.println("操作数据库出错，请仔细检查");

System.err.println(e.getMessage());

}

return conn;

}

//关闭数据库连接

public void close()

{

try{

//rs.close();

//stmt.close();

conn.close();

}catch(SQLException sqlexception){

sqlexception.printStackTrace();

}

}

}

============================================================================调用代码

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

<%@ page contentType="text/html; charset=gb2312" language="java"

import="java.sql.*" %>

<jsp:useBean id="DBConn" scope="page" class="conn.DBConnAccess"/>

<%

//连接Access 数据库

String dbpath="data/test.mdb"; //数据库的路径，请自行修改

Connection conn=DBConn.getConnToAccess(application.getRealPath(dbpath));

Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);

String sql="select * from username order by id";

//String sql1="insert into username (uid,pwd) values('wsp','wsp')";

//stmt.executeUpdate(sql1);

ResultSet rs=stmt.executeQuery(sql);

while(rs.next()){

out.print("用户名:");

out.print(rs.getString("uid")+" 密码:");

out.println(rs.getString("pwd")+"<br>");

}

DBConn.close();

%>