用JavaBean编写SQLServer数据库连接类

来源:岁月联盟 编辑:zhuzhu 时间:2007-10-19

下面是以SQLServer为例编写一个简单的数据库连接工具类,把它封装到web项目的(WEB-INF/classes/)目录下,在Java或JSP页面引入就可以实现了.

ODBC名称:mysql;

用户名:dxaw;

密 码:123;

方法executeUpdate():对数据库更新;

方法executeQuery():通过SQL语句返回记录集;


代码如下:


//类conn.db.conndb.java



package conn.db;
import java.sql.*;
public class conndb {
Connection conn;
ResultSet rs;
private int count;
public conndb() {
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

} catch (Exception ex) {}
}
public ResultSet executeQuery(String sql){
try {
conn=DriverManager.getConnection("Jdbc:Odbc:mysql","dxaw","123");
Statement stat=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
rs=stat.executeQuery(sql);
} catch (Exception ex1) {
}
return rs;
}
public void executeUpdate(String sql){
try {
conn = DriverManager.getConnection("Jdbc:Odbc:mysql", "dxaw","123");
Statement stat=conn.createStatement();
stat.executeQuery(sql);
} catch (Exception ex2) {
}
}
}