Java实现简单的医院管理系统源码

1.开发工具

• NetBeans8.2
• Mysql5.7
• mysql-connector-java-5.1.6.jar

2.演示

登录界面

增删查改界面

3.源码

CREATE TABLE user (
username varchar(255) NOT NULL,
password varchar(255) DEFAULT NULL,
PRIMARY KEY (username)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

CREATE TABLE doctor_info (
no varchar(45) NOT NULL,
name varchar(45) DEFAULT NULL,
departments varchar(45) DEFAULT NULL,
level varchar(45) DEFAULT NULL,
ghf varchar(45) DEFAULT NULL,
PRIMARY KEY (no)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

package 经典增删查改;
import com.mysql.jdbc.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JComboBox;
import javax.swing.JOptionPane;


public class Login extends javax.swing.JFrame {

   private int flag;
   public Login() {
       initComponents();
   }

   /**
    * This method is called from within the constructor to initialize the form.
    * WARNING: Do NOT modify this code. The content of this method is always
    * regenerated by the Form Editor.
    */
   @SuppressWarnings("unchecked")
   // "collapsed" desc="Generated Code">                          
   private void initComponents() {

       jLabel1 = new javax.swing.JLabel();
       jLabel2 = new javax.swing.JLabel();
       jTextField2 = new javax.swing.JTextField();
       jPasswordField1 = new javax.swing.JPasswordField();
       jButton2 = new javax.swing.JButton();
       jButton3 = new javax.swing.JButton();

       setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

       jLabel1.setText("账号");

       jLabel2.setText("密码");

       jTextField2.setText(" ");

       jButton2.setText("登录");
       jButton2.addActionListener(new java.awt.event.ActionListener() {
           public void actionPerformed(java.awt.event.ActionEvent evt) {
               jButton2ActionPerformed(evt);
           }
       });

       jButton3.setText("退出");
       jButton3.addActionListener(new java.awt.event.ActionListener() {
           public void actionPerformed(java.awt.event.ActionEvent evt) {
               jButton3ActionPerformed(evt);
           }
       });

       javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
       getContentPane().setLayout(layout);
       layout.setHorizontalGroup(
           layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
           .addGroup(layout.createSequentialGroup()
               .addGap(103, 103, 103)
               .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                   .addComponent(jLabel2)
                   .addComponent(jLabel1))
               .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
               .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                   .addGroup(layout.createSequentialGroup()
                       .addComponent(jButton2)
                       .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 35, Short.MAX_VALUE)
                       .addComponent(jButton3))
                   .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                       .addComponent(jTextField2, javax.swing.GroupLayout.DEFAULT_SIZE, 149, Short.MAX_VALUE)
                       .addComponent(jPasswordField1)))
               .addContainerGap(114, Short.MAX_VALUE))
       );
       layout.setVerticalGroup(
           layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
           .addGroup(layout.createSequentialGroup()
               .addGap(69, 69, 69)
               .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                   .addComponent(jLabel1)
                   .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
               .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
               .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                   .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 26, javax.swing.GroupLayout.PREFERRED_SIZE)
                   .addComponent(jPasswordField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
               .addGap(18, 18, 18)
               .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                   .addComponent(jButton2)
                   .addComponent(jButton3))
               .addContainerGap(49, Short.MAX_VALUE))
       );

       pack();
   }//                         

   private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {                                         
       System.exit(0);
   }                                        

   private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
       try {
           Connection con = DBConnection.getConnection();
           Statement stmt = con.createStatement();
           String sql="select *from user";
           ResultSet rs = stmt.executeQuery(sql);
           String usename=jTextField2.getText().trim();
           char[] p=jPasswordField1.getPassword();
           String pwd=new String(p);
           String   name = null;
           String pass = null;
           while(rs.next()){
                name=rs.getString(1);
                pass=rs.getString(2);
                if(usename.equals(name)&&pwd.equals(pass)){
                    System.out.println("登录成功！！");

                    new doctorInfoGui().setVisible(true);
                    this.dispose();

             }    
                } 



       } catch (ClassNotFoundException ex) {
           Logger.getLogger(Login.class.getName()).log(Level.SEVERE, null, ex);
       } catch (SQLException ex) {
           Logger.getLogger(Login.class.getName()).log(Level.SEVERE, null, ex);
       }
   }                                        

   /**
    * @param args the command line arguments
    */
   public static void main(String args[]) {
       /* Set the Nimbus look and feel */
       //"collapsed" desc=" Look and feel setting code (optional) ">
       /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
        * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
        */
       try {
           for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
               if ("Nimbus".equals(info.getName())) {
                   javax.swing.UIManager.setLookAndFeel(info.getClassName());
                   break;
               }
           }
       } catch (ClassNotFoundException ex) {
           java.util.logging.Logger.getLogger(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
       } catch (InstantiationException ex) {
           java.util.logging.Logger.getLogger(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
       } catch (IllegalAccessException ex) {
           java.util.logging.Logger.getLogger(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
       } catch (javax.swing.UnsupportedLookAndFeelException ex) {
           java.util.logging.Logger.getLogger(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
       }
       //

       /* Create and display the form */
       java.awt.EventQueue.invokeLater(new Runnable() {
           public void run() {
               new Login().setVisible(true);
           }
       });
   }

   // Variables declaration - do not modify                     
   private javax.swing.JButton jButton2;
   private javax.swing.JButton jButton3;
   private javax.swing.JLabel jLabel1;
   private javax.swing.JLabel jLabel2;
   private javax.swing.JPasswordField jPasswordField1;
   private javax.swing.JTextField jTextField2;
   // End of variables declaration                   
}

package 经典增删查改;
import java.awt.event.KeyEvent;

import javax.swing.JOptionPane;
public class doctorInfoGui extends javax.swing.JFrame {
    public doctorInfoGui() {
        initComponents();
        String sql="select*from doctor_info";
        //doctorInfo看作为一个TableModel
        doctorInfo d=new doctorInfo (sql);
        //教你如何添加数据的方法
        jTable1.setModel(d);
        System.out.println(" 已经给表添加好了数据！");
    }


    private void initComponents() {

        jtfseacher = new javax.swing.JTextField();
        jbtseacher = new javax.swing.JButton();
 ///////////////////////////////////////////////////////////////////
         //Alt+Enter
       jbtseacher.setMnemonic(KeyEvent.VK_ENTER); 


        jScrollPane1 = new javax.swing.JScrollPane();
        jScrollPane2 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jtfno = new javax.swing.JTextField();
        jtfname = new javax.swing.JTextField();
        jTextFieldks = new javax.swing.JTextField();
        jtflevel = new javax.swing.JTextField();
        jtfghf = new javax.swing.JTextField();
        jbtAdd = new javax.swing.JButton();
        Updatajbt = new javax.swing.JButton();
        jbtUpdata = new javax.swing.JButton();
        jLabel6 = new javax.swing.JLabel();
        deletejbt = new javax.swing.JButton();
        jbtClear = new javax.swing.JButton();
        jLabel7 = new javax.swing.JLabel();


        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jbtseacher.setText("查询");
        jtfseacher.setToolTipText("按姓名查询");
        jbtseacher.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtseacherActionPerformed(evt);
            }
        });


        jTable1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jTable1MouseClicked(evt);
            }
        });
        jScrollPane2.setViewportView(jTable1);

        jScrollPane1.setViewportView(jScrollPane2);

        jLabel1.setText("编号");

        jLabel2.setText("姓名");

        jLabel3.setText("科室");

        jLabel4.setText("级别");

        jLabel5.setText("挂号费");

        jtfno.setText(" ");

        jtfname.setText(" ");



        jtflevel.setText(" ");

        jtfghf.setText(" ");

        jbtAdd.setText("添加");
        jbtAdd.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtAddActionPerformed(evt);
            }
        });

        Updatajbt.setText("修改");
        Updatajbt.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                UpdatajbtActionPerformed(evt);
            }
        });



        jLabel6.setText("姓名");

        deletejbt.setText("删除");
        deletejbt.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                deletejbtActionPerformed(evt);
            }
        });

        jbtClear.setText("清空");
        jbtClear.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtClearActionPerformed(evt);
            }
        });

        jLabel7.setText("科室");

        jTextFieldks.setText(" ");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 515, Short.MAX_VALUE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(81, 81, 81)
                        .addComponent(jtfseacher, javax.swing.GroupLayout.PREFERRED_SIZE, 78, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(39, 39, 39)
                        .addComponent(jbtseacher)
                        .addGap(32, 32, 32)
                        .addComponent(deletejbt))
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel1)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jtfno, javax.swing.GroupLayout.PREFERRED_SIZE, 76, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel6)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jtfname, javax.swing.GroupLayout.PREFERRED_SIZE, 76, javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(32, 32, 32)
                                .addComponent(jLabel4)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jtflevel, javax.swing.GroupLayout.PREFERRED_SIZE, 74, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(18, 18, 18)
                                .addComponent(jLabel5)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jtfghf, javax.swing.GroupLayout.PREFERRED_SIZE, 74, javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(55, 55, 55)
                                .addComponent(jbtUpdata))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(30, 30, 30)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addGroup(layout.createSequentialGroup()
                                        .addComponent(jLabel7)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                        .addComponent(jTextFieldks, javax.swing.GroupLayout.PREFERRED_SIZE, 65, javax.swing.GroupLayout.PREFERRED_SIZE))
                                    .addGroup(layout.createSequentialGroup()
                                        .addComponent(jbtAdd)
                                        .addGap(10, 10, 10)
                                        .addComponent(jbtClear)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                        .addComponent(Updatajbt)))))))
                .addContainerGap())
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jLabel3)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel2))));


        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(17, 17, 17)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jtfseacher, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jbtseacher)
                    .addComponent(deletejbt))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 172, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE)

                        .addComponent(jbtUpdata)))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel1)
                            .addComponent(jLabel4)
                            .addComponent(jtfno, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jtflevel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jLabel7)
                            .addComponent(jTextFieldks, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(8, 8, 8)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel5)
                            .addComponent(jtfname, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jtfghf, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jLabel6))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 0, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addContainerGap(39, Short.MAX_VALUE))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                                .addComponent(jbtClear)
                                .addComponent(Updatajbt))
                            .addComponent(jbtAdd, javax.swing.GroupLayout.Alignment.LEADING))
                        .addGap(43, 43, 43))))
        );

        pack();
    }//                         

    private void jbtseacherActionPerformed(java.awt.event.ActionEvent evt) {                                           
         String text=jtfseacher.getText().trim();
         //重新执行查询sql语句，在读取数据，然后再添加到Table表格中，实现刷新表格的作用
         String sql="select*from doctor_info where name='"+text+"'";
         doctorInfo d=new doctorInfo (sql);
         jTable1.setModel(d);
         jtfseacher.setText("");


    }                                          

    private void jbtAddActionPerformed(java.awt.event.ActionEvent evt) {                                       
          String no=jtfno.getText().trim();
          String name=jtfname.getText().trim();
          String ks=  jTextFieldks.getText().trim();
          String level=jtflevel.getText().trim();
          String ghf=jtfghf.getText().trim();

          //执行添加sql语句，再读取数据
          String sql = "INSERT INTO doctor_info(no,name ,departments,level,ghf) VALUES('" + no + "','" + name+ "',   '" + ks+ "',   '" + level + "','"+ghf+"')";
          doctorInfo df=new doctorInfo ();
          df.Add(sql);
          //
          //重新读取数据
          String sql1="select*from doctor_info";
          doctorInfo d=new doctorInfo (sql1);
           jTable1.setModel(d);

           jtfno.setText("");
           jtfname.setText("");
           jtflevel.setText("");
           jtfghf.setText("");
           jTextFieldks.setText("");
    }                                      

    private void UpdatajbtActionPerformed(java.awt.event.ActionEvent evt) {                                          
        //获取当前位置
        int index = jTable1.getSelectedRow();
        //获取莫一行的第0列的值,注意获取的行数需要减少一个
      String id =  jTable1.getValueAt(index-1, 0).toString() ;

      String no=jtfno.getText().trim();
      String name=jtfname.getText().trim();
      String ks= jTextFieldks.getText().trim();
      String level=jtflevel.getText().trim();
      String ghf=jtfghf.getText().trim();


      jtfno.setText("");
      jtfname.setText("");
      jtflevel.setText("");
      jtfghf.setText("");
      jTextFieldks.setText("");

      String sql = "UPDATE  doctor_info SET name ='" + name + "',departments='" + ks + "',level='" + level+ "',ghf='" + ghf + "' WHERE no='" + no+ "'";
      System.out.println(id);
      System.out.println(no);
      doctorInfo df=new doctorInfo ();
      df.Update(sql);



      //重新读取数据
      String sql1="select*from doctor_info";
      doctorInfo d=new doctorInfo (sql1);
       jTable1.setModel(d);


    }                                         


    private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {                                     
        //获取某一行的具体值，并把它显示在文本框中
        String no = jTable1.getValueAt(jTable1.getSelectedRow(), 0).toString();
        String name = jTable1.getValueAt(jTable1.getSelectedRow(), 1).toString();
        String ks = jTable1.getValueAt(jTable1.getSelectedRow(), 2).toString();
        String level = jTable1.getValueAt(jTable1.getSelectedRow(), 3).toString();
        String ghf= jTable1.getValueAt(jTable1.getSelectedRow(), 4).toString();
        //把点击的内容显示在文本框中
        jtfno.setText(no);
        jtfname.setText(name);
        jTextFieldks.setText(ks);
        jtflevel.setText(level);
        jtfghf.setText(ghf);


    }                                    

    private void deletejbtActionPerformed(java.awt.event.ActionEvent evt) {                                          
         //设置选择对话框的选项                                     
        String[] options = {"是", "否"};
        int answ = JOptionPane.showOptionDialog(null, "是否确认删除??", "提示", JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[1]);

        if (answ == 0) {
            int index = jTable1.getSelectedRow();
            String id = jTable1.getValueAt(index, 0).toString();
            String sql="delete from doctor_info where no='"+id+"'";

           // 删除一条记录
            doctorInfo df=new doctorInfo ();
            df.delete(sql);
            System.out.println("删除成功！！！");

            //重新读取数据
            String sql1="select*from doctor_info";
            doctorInfo d=new doctorInfo (sql1);
             jTable1.setModel(d);

             jtfno.setText("");
             jtfname.setText("");
             jtflevel.setText("");
             jtfghf.setText("");
             jTextFieldks.setText("");

            } else 
            {
                JOptionPane.showMessageDialog(null, "无法删除！！！");
            }
    }                                         

    private void jbtClearActionPerformed(java.awt.event.ActionEvent evt) {                                         
         jtfno.setText("");
         jtfname.setText("");
         jtflevel.setText("");
         jtfghf.setText("");
         jTextFieldks.setText("");
    }                                        

    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //"collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(doctorInfoGui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(doctorInfoGui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(doctorInfoGui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(doctorInfoGui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new doctorInfoGui().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton Updatajbt;
    private javax.swing.JButton deletejbt;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JTable jTable1;

    private javax.swing.JButton jbtAdd;
    private javax.swing.JButton jbtClear;
    private javax.swing.JButton jbtUpdata;
    private javax.swing.JButton jbtseacher;
    private javax.swing.JTextField jtfghf;
    private javax.swing.JTextField jTextFieldks;
    private javax.swing.JTextField jtflevel;
    private javax.swing.JTextField jtfname;
    private javax.swing.JTextField jtfno;
    private javax.swing.JTextField jtfseacher;
    // End of variables declaration                   
}

package 经典增删查改;

import java.io.Serializable;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Vector;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.table.AbstractTableModel;

public class doctorInfo extends AbstractTableModel  {
       Connection con=null;
       PreparedStatement ps=null;
       ResultSet rs=null;
       Vector rowData,columnName;
       public doctorInfo(String sql){
          init( sql) ;
       }

       public doctorInfo(){

        }
       public void init(String sql){

                //columnName保存表头信息
               columnName=new Vector();
               columnName.add("编号");
               columnName.add("姓名");
               columnName.add("科室");
               columnName.add("级别");
               columnName.add("挂号费");


            //rowData向量保存每一行的信息
            rowData=new Vector();
           try {
            con = DBConnection.getConnection();
             ps=(PreparedStatement) con.prepareStatement( sql);
             rs=ps.executeQuery();
            while(rs.next()){
                   Vector bang=new Vector();
                   bang.add(rs.getString(1) );
                   bang.add(rs.getString(2) );
                   bang.add(rs.getString(3) );
                   bang.add(rs.getString(4) );
                   bang.add(rs.getString(5) );

                   //将读取的每一行数据添加到bang中，然后再把bang添加到rowData向量中
                    rowData.add(bang);
            }
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally {
            if(con!=null&&ps!=null&rs!=null){
                try {
                    con.close();
                    ps.close();
                    rs.close();
                } catch (SQLException e) {

                    e.printStackTrace();
                }

            }
        }
  }
    public void chushihua(String sql){
         Connection con=null;
         PreparedStatement ps=null;
        int rs;

        try {
            con = DBConnection.getConnection();
             ps=(PreparedStatement) con.prepareStatement( sql);
             rs=ps.executeUpdate();

        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


    }   
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    public void delete(String sql){
        chushihua( sql);

    }
    public void Add(String sql){
        chushihua( sql);

    }

    public void Update(String sql){
        chushihua( sql);

    }

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
   @Override
   public int getRowCount() {
        return this.rowData.size();
   }

   @Override
   public int getColumnCount() {
      return this.columnName.size();
   }

   @Override
   public Object getValueAt(int  row, int column) {
        return  ((Vector ) this.rowData.get(row)).get(column);
   }
   public String getColumnName(int column) {

        return   (String) this.columnName.get(column);
    }


  }

package 经典增删查改;
import com.mysql.jdbc.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
class DBConnection{
     public static Connection getConnection() throws ClassNotFoundException {  
     // JDBC 驱动名及数据库 URL
     String JDBC_DRIVER = "com.mysql.jdbc.Driver";
     String URL = "jdbc:mysql://localhost:3306/hospital";
     String USER = "root";
     String PASSWORD = "root";
     Connection conn = null;  

            //与数据库建立连接  
             Class.forName(JDBC_DRIVER);
         try {
             conn=  (Connection) DriverManager.getConnection(URL,USER,PASSWORD);
            System.out.println("已经连接数据库");

         } catch (SQLException ex) {
             Logger.getLogger(DBConnection.class.getName()).log(Level.SEVERE, null, ex);
         } 



        return conn;  
    }  

}

网上难找一个带界面的管理系统源码，我把这简单管理系统分享出去，希望能够帮助到那些需要帮助的人。