定义一个类来连接操作数据库

 
package com.yourcompany.DB;<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

 

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.SQLException;

 

// fubin www.cujava.com

public class DBU {

    private String name;

    private String password;

    public String getName() {

       return name;

    }

    public void setName(String name) {

       this.name = name;

    }

    public String getPassword() {

       return password;

    }

    public void setPassword(String password) {

       this.password = password;

    }

    public DBU(){

      

    }

   

    public DBU(String name,String password){

       this.name=name;

       this.password=password;

    }

   

    Connection connection = null;

    public void dblink() {  

      

       String serverName = "127.0.0.1";

       String portNumber = "1521";

       String sid = "oracle";

       String url = "jdbc:oracle:thin:@" + serverName + ":" + portNumber

              + ":" + sid;

       String username = "scott";

       String password = "tiger";

       try {

           Class.forName("oracle.jdbc.driver.OracleDriver");

       } catch (ClassNotFoundException e) {

           System.out.println("数据库驱动类没找到");

       }

       try {

           // 建立连接

 

           connection = DriverManager.getConnection(url, username, password);

           System.out.println("数据库连接成功！");

       } catch (SQLException e) {

           System.out.println("执行SQL语句异常！");

           e.printStackTrace();

       }

    }

    public void insert(){

       dblink();

       PreparedStatement pstmt=null;

       try {

           pstmt=connection.prepareStatement("INSERT INTO login(name,password)VALUES(?,?)");

           connection.setAutoCommit(false);

           pstmt.setString(1, name);

           pstmt.setString(2, password);

           pstmt.executeUpdate();

           connection.commit();

           System.out.print("提交了");

       } catch (SQLException e) {

           // TODO Auto-generated catch block

           e.printStackTrace();

       }finally{

           try {

              pstmt.close();

              connection.close();

           } catch (SQLException e) {

              // TODO Auto-generated catch block

              e.printStackTrace();

           }

          

       }

    }

 

   

}