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1、/ 用户登录 / package com.newer.property; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.*; import java.sql.Statement; import java.sql.ResultSet; import javax.swing.JButton; import javax.swing.JLabel; import javax.swing.JTextField; imp
2、ort javax.swing.JPasswordField; import javax.swing.JPanel; import javax.swing.JFrame; public class user_land extends JFrame implements ActionListener static Connection conn=null; static Statement stat=null; static ResultSet rs=null; static String url=jdbc:sqlserver:/127.0.0.1:1433;DatabaseName=_Prop
3、erty; static String user=sa; static String password=; JPanel p1,p2,p3,p4,p5; JLabel lbl1,lbl2,lbl3,lbl4; JTextField txt_name; JPasswordField txt_pwd; JButton btn1,btn2,btn3; static try Class.forName(com.microsoft.sqlserver.jdbc.SQLServerDriver); catch(Exception e) System.out.println(加载驱动失败); e.print
4、StackTrace(); public user_land() this.setTitle(固定资产及设备用户登录); p1=new JPanel(); p2=new JPanel(); p3=new JPanel(); p4=new JPanel(); p5=new JPanel(); lbl1=new JLabel(欢迎登录); lbl2=new JLabel(用户名：); lbl3=new JLabel(密 码：); lbl4=new JLabel(); txt_name=new JTextField(10); txt_pwd=new JPasswordField(10); btn1=
5、new JButton(登录); btn2=new JButton(清空); btn3=new JButton(退出); p1.add(lbl1); p2.add(lbl2); p2.add(txt_name); p3.add(lbl3); p3.add(txt_pwd); p4.add(btn1); p4.add(btn2); p4.add(btn3); p5.add(lbl4); this.setLayout(new GridLayout(5,1); this.add(p1); this.add(p2); this.add(p3); this.add(p4); this.add(p5);
6、this.setBounds(400, 300, 400, 300); this.setDefaultCloseOperation(EXIT_ON_CLOSE); this.setVisible(true); /添加按钮登录事件 btn1.addActionListener( new ActionListener() public void actionPerformed(ActionEvent e) if(txt_name.getText().equals()=true) if(txt_name.getText().equals()=false) if(txt_name.getText().
7、equals()=true) if(is_Property() new Sys_interface().show(); else if(txt_name.getText().equals()=false) ); btn1.addActionListener(this); /清空用户名和密码 btn2.addActionListener( new ActionListener() public void actionPerformed(ActionEvent e) txt_name.setText(null); txt_pwd.setText(null); lbl4.setText(null);
8、 ); /退出 btn3.addActionListener( new ActionListener() public void actionPerformed(ActionEvent e) System.exit(0); ); protected void user_land(Object setVisible) / TODO Auto-generated method stub public boolean is_Property() try conn=DriverManager.getConnection(url, user, password); /System.out.println
9、(连接成功); stat=conn.createStatement(); String sql=select * from Admin_Info; rs=stat.executeQuery(sql); while(rs.next() /System.out.println(rs.getString(A_name)+t+rs.getString(A_pwd); String name=txt_name.getText(); String pwd=txt_pwd.getText(); if(name.equals(rs.getString(A_name) return true; catch(SQ
10、LException e) System.out.println(连接失败!); e.printStackTrace(); /关闭数据库 finally try if(rs!=null) rs.close(); if(stat!=null) stat.close(); if(conn!=null) conn.close(); catch(Exception e2) System.out.println(关闭失败); e2.printStackTrace(); return false; public static void main(String args) new user_land();
11、public void actionPerformed(ActionEvent e) /System.exit(0); this.setVisible(false); / 主界面 / package com.newer.property; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dialog; import java.awt.FlowLayout; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.ev
12、ent.ActionListener; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JMenu; import javax.swing.JPanel; import javax.swing.JTextArea; import javax.swing.JTextField; public class Sys_interface extends JFrame implements
13、ActionListener JPanel p=null; JMenuItem jmi_1,jmi_2,jmi_3,jmi_4,jmi_5,jmi_6,jmi_7,jmi_8,jmi_9,jmi_10; JMenuBar jmb=null; JMenu jm_1=null,jm_2=null,jm_3=null,jm_4=null; JLabel text; public Sys_interface() this.setTitle(固定资产及设备管理系统); text=new JLabel( 欢迎进入固定资产及设备管理系统); text.setFont(new Font(宋体,1,28); t
14、ext.setForeground(Color.blue); p=new JPanel(); jmb=new JMenuBar(); jm_1=new JMenu(系统功能); jm_2=new JMenu(资产管理); jm_3=new JMenu(系统查询); jm_4=new JMenu(帮助); jmi_1=new JMenuItem(用户登录); jmi_2=new JMenuItem(注销用户); jmi_3=new JMenuItem(用户添加); jmi_4=new JMenuItem(退出系统); jmi_5=new JMenuItem(资产借出管理); jmi_6=new JMenuItem(资产信息管理); jmi_7=new JMenuItem(资产信息查询); jmi_8=new JMenuItem(资产借出查询); jmi_9=new JMenuItem(资产归还查询); jmi_10=new JMenuItem(关于); jm_1.add(jmi_1); jm_1.add(jmi_2); jm_1.add(jmi_3); jm_1.add(jmi_4); jm_2.add(jmi_5); jm_2.a
