保存数据到数据库成功

package com.demo;

import javax.swing.AbstractButton;

import javax.swing.JFrame;//框架

import javax.swing.JPanel;//面板

import javax.swing.JButton;//按钮

import javax.swing.JLabel;//标签

import javax.swing.JTextField;//文本框

import java.awt.Font;//字体

import java.awt.Color;//颜色

import javax.swing.JPasswordField;//密码框

import java.awt.event.ActionListener;//事件监听

import java.awt.event.ActionEvent;//事件处理

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import javax.swing.JOptionPane;//消息窗口

import org.omg.CORBA.Request;

public class Login extends JFrame{

private static final long serialVersionUID = 1L;

public JPanel pnluser;

public JLabel lbluserLogIn;

public JLabel lbluserName;

public JLabel lbluserPWD;

public JTextField txtName;

public JPasswordField pwdPwd;

public JButton btnSub;

public JButton btnReset;

public JButton zhuce;

public Login() {

pnluser = new JPanel();

lbluserLogIn = new JLabel();

lbluserName = new JLabel();

lbluserPWD = new JLabel();

txtName = new JTextField();

pwdPwd = new JPasswordField();

btnSub = new JButton();

btnReset = new JButton();

zhuce = new JButton();

userInit();

}

public void userInit(){

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//设置关闭框架的同时结束程序

this.setBounds(500, 300, 300, 200);

this.setSize(300,200);//设置框架大小为长300,宽200

this.setResizable(false);//设置框架不可以改变大小

this.setTitle("用户登录");//设置框架标题

this.pnluser.setLayout(null);//设置面板布局管理

this.pnluser.setBackground(Color.cyan);//设置面板背景颜色

this.lbluserLogIn.setText("用户登录");//设置标签标题

this.lbluserLogIn.setFont(new Font("宋体",Font.BOLD | Font.ITALIC,14));//设置标签字体

this.lbluserLogIn.setForeground(Color.RED);//设置标签字体颜色

this.lbluserName.setText("用户名:");

this.lbluserPWD.setText("密    码:");

this.btnSub.setText("登录");

this.btnReset.setText("重置");

this.zhuce.setText("注册");

this.lbluserLogIn.setBounds(120,15,60,20);//设置标签x坐标120,y坐标15,长60,宽20

this.lbluserName.setBounds(50,55,60,20);

this.lbluserPWD.setBounds(50,85,60,25);

this.txtName.setBounds(110,55,120,20);//用户名输入方框

this.pwdPwd.setBounds(110,85,120,20);//密码输入方框

this.btnSub.setBounds(60,120,60,20);

this.btnSub.addActionListener(new ActionListener()//匿名类实现ActionListener接口

{

public void actionPerformed(ActionEvent e){

btnsub_ActionEvent(e);

}

}

);

this.btnReset.setBounds(130,120,60,20);

this.btnReset.addActionListener(new ActionListener()//匿名类实现ActionListener接口

{

public void actionPerformed(ActionEvent e){

btnreset_ActionEvent(e);

}

}

);

this.zhuce.setBounds(210,120,60,20);

this.zhuce.addActionListener(new ActionListener()//匿名类实现ActionListener接口

{ public void actionPerformed(ActionEvent e){

new Zhuce();

}

}

);

this.pnluser.add(lbluserLogIn);//加载标签到面板

this.pnluser.add(lbluserName);

this.pnluser.add(lbluserPWD);

this.pnluser.add(txtName);

this.pnluser.add(pwdPwd);

this.pnluser.add(btnSub);

this.pnluser.add(btnReset);

this.pnluser.add(zhuce);

this.add(pnluser);//加载面板到框架

this.setVisible(true);//设置框架可显

}

public void btnsub_ActionEvent(ActionEvent e){

Connection dbConn = null;

String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; // 加载JDBC驱动

// 连接服务器和数据库ServletUser

String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=Northwind"; //数据库的名

String user = "sa"; // 默认用户名

String userpassword = "123456"; // 密码

String name=txtName.getText();//输入的用户名

String mima=pwdPwd.getText();//输入的密码

//String sqlStr="select CustomerID, CompanyName, ContactName,userName,userPwd from Customers";   //调用数据库的表Customers

if(name.equals("")||mima.equals(""))//如果没输用户名或密码,则提示对不起,请输入用户名或密码

{

JOptionPane.showInputDialog("对不起,请输入用户名或密码");

}

else{

try  {   //这里的异常处理语句是必需的.否则不能通过编译!

Class.forName(driverName);//注意这里，网上的和这里不同要改为这样

Connection con = DriverManager.getConnection(dbURL, user, userpassword);  //数据库的登录名和密码，sa，123456

System.out.println("创建连接对像成功!");

Statement st = con.createStatement();

// ResultSet rs = st.executeQuery("select * from login where namer='"+name+"'");

//String sql=st.executeQuery("select * from login where namer='"+name+"'");

ResultSet rs = st.executeQuery("select * from login where namer='"+name+"'");

Statement stmt=con.createStatement();

//rs=stmt.executeQuery(sql);

// ResultSet rs=stmt.executeQuery("insert into login(namer,pwd) values("+"‘"+name+"‘"+"，"+mima+"‘"+")");

//stmt.execute(rs);

//rs=stmt.executeQuery(sql);

String    sql="insert into login(namer,pwd) values("+"'"+name+"'"+","+"'"+mima+"'"+")";

stmt.execute(sql);

System.out.println("添加成功");//userName是输入的用户名，txtName，password1是输入的密码

//用户(用户名,密码) 是 表名(列名，列名)；

/*  if(rs.next()){

System.out.println(name);

System.out.println(mima);

System.out.println(rs.getString("pwd"));

if(rs.getString("pwd").equals(mima))//数据库的类型要设置为varchar(50)；

{

JOptionPane.showInputDialog( "系统登录成功,恭喜你!");

setVisible(false);

new chenggongjiemian();

}

else

{

JOptionPane.showInputDialog("对不起,密码错误,请重新输入,登陆失败");

}

}*/

rs.close();

st.close();

con.close();

}

catch(Exception err) {

err.printStackTrace(System.out);        }

finally{

//进行资源的释放

if(dbConn!=null){

try {

dbConn.close();

}

catch (SQLException e1) {

e1.printStackTrace();

}

}}}

}

private String txtName() {

// TODO Auto-generated method stub

return null;

}

private Object rs(String string) {

// TODO Auto-generated method stub

return null;

}

private void setUserPwd(int int1) {

// TODO Auto-generated method stub

}

private void setUserName(int int1) {

// TODO Auto-generated method stub

}

public void btnreset_ActionEvent(ActionEvent e){

txtName.setText("");

pwdPwd.setText("");

}

public static void main(String[] args){

new Login();

}

}