一个操作数据库的Java Bean……
类别: JAVA教程 
一个操作数据库的Java Bean，有兴趣的朋友看一下吧~~
package dbconnect;
import java.sql.*;
public class sqlconnection
{
String sDbDriver = "sun.jdbc.odbc.JdbcOdbcDriver";
String sConnStr = "jdbc:odbc:sqlconnect"; // sqlconnect 数据源名称；
private Connection conn = null;
private Statement stmt = null;
ResultSet rs = null;
public sqlconnection()
{
try
{
Class.forName(sDbDriver);
}catch(java.lang.ClassNotFoundException e){
System.err.println("sqlconnection():" + e.getMessage());
}
}
public ResultSet executeQuery(String sql)
{
rs = null;
try
{
conn = DriverManager.getConnection(sConnStr);
stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
}catch (SQLException ex){
System.err.println("aq.executeQuery:" + ex.getMessage());
}
return rs;
}
public void executeUpdate(String sql)
{
stmt = null;
rs = null;
try
{
conn = DriverManager.getConnection(sConnStr);
stmt = conn.createStatement();
stmt.executeQuery(sql);
stmt.close();
conn.close();
}catch (SQLException ex){
System.err.println("aq.executeQuery:" + ex.getMessage());
}
}
public void closeStmt()
{
try
{
stmt.close();
}catch (SQLException ex){
System.err.println("aq.executeQuery:" + ex.getMessage());
}
}
public void closeConn()
{
try
{
conn.close();
}catch (SQLException ex){
System.err.println("aq.executeQuery:" + ex.getMessage());
}
}
}
package dbconnect;
import java.sql.*;
public class sqlconnection
{
String sDbDriver = "sun.jdbc.odbc.JdbcOdbcDriver";
String sConnStr = "jdbc:odbc:sqlconnect"; // sqlconnect 数据源名称；
private Connection conn = null;
private Statement stmt = null;
ResultSet rs = null;
public sqlconnection()
{
try
{
Class.forName(sDbDriver);
}catch(java.lang.ClassNotFoundException e){
System.err.println("sqlconnection():" + e.getMessage());
}
}
public ResultSet executeQuery(String sql)
{
rs = null;
try
{
conn = DriverManager.getConnection(sConnStr);
stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
}catch (SQLException ex){
System.err.println("aq.executeQuery:" + ex.getMessage());
}
return rs;
}
public void executeUpdate(String sql)
{
stmt = null;
rs = null;
try
{
conn = DriverManager.getConnection(sConnStr);
stmt = conn.createStatement();
stmt.executeQuery(sql);
stmt.close();
conn.close();
}catch (SQLException ex){
System.err.println("aq.executeQuery:" + ex.getMessage());
}
}
public void closeStmt()
{
try
{
stmt.close();
}catch (SQLException ex){
System.err.println("aq.executeQuery:" + ex.getMessage());
}
}
public void closeConn()
{
try
{
conn.close();
}catch (SQLException ex){
System.err.println("aq.executeQuery:" + ex.getMessage());
}
}
}
