TeacherUI:Almost completed and the test of DateBase didn't happen problem.But the test with ggb will not start.

Teacher/src/main/java/com/cfive/classroom/teacher/Attend.form

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="com.cfive.classroom.teacher.Attend">
-  <grid id="27dc6" binding="rootPanel" layout-manager="GridLayoutManager" row-count="1" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+  <grid id="27dc6" binding="rootPanel" layout-manager="GridLayoutManager" row-count="2" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
     <margin top="0" left="0" bottom="0" right="0"/>
     <constraints>
       <xy x="20" y="20" width="500" height="400"/>
@@ -58,6 +58,14 @@
           </scrollpane>
         </children>
       </tabbedpane>
+      <component id="49582" class="javax.swing.JButton" binding="bt_refresh">
+        <constraints>
+          <grid row="1" column="0" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="4" fill="0" indent="0" use-parent-layout="false"/>
+        </constraints>
+        <properties>
+          <text value="刷新"/>
+        </properties>
+      </component>
     </children>
   </grid>
 </form>

Teacher/src/main/java/com/cfive/classroom/teacher/Attend.java

@@ -6,13 +6,18 @@ import com.cfive.classroom.library.database.bean.Attendance;
 import com.cfive.classroom.library.database.util.DependenciesNotFoundException;
 import com.cfive.classroom.library.database.util.NoConfigException;
 import com.cfive.classroom.library.net.TeacherNet;
+import com.cfive.classroom.library.net.util.MessageObject;
+import com.cfive.classroom.library.net.util.MessageType;
+import com.cfive.classroom.library.net.util.ReceiveListener;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
 import javax.swing.*;
-import javax.swing.event.ListSelectionEvent;
+import javax.swing.event.TableModelEvent;
-import javax.swing.event.ListSelectionListener;
+import javax.swing.event.TableModelListener;
 import javax.swing.table.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.sql.SQLException;
@@ -20,7 +25,6 @@ import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Vector;
 
 public class Attend {
     private static final Attend attend = new Attend();
@@ -31,16 +35,18 @@ public class Attend {
     private final Object[] t2_columnTitle = {"考勤号", "学号", "姓名", "签到状态"};
     private JTable table_already;
     private JTable table_undo;
+    private JButton bt_refresh;
     private TeacherNet teacherNet;
     private String courseID;
     private final List<Attendance> attendancesList = new ArrayList<>();
     private final List<Attendance> alreadyList = new ArrayList<>();
     private final List<Attendance> undoList = new ArrayList<>();
+    private DefaultTableModel undoTableModel,alreadyTableModel;
     private static final Logger LOGGER = LogManager.getLogger();
 
     public Attend() {
         //学生签到信息监听
-/*
+        if(teacherNet!=null){
             teacherNet.setOnReceiveListener(new ReceiveListener() {
                 @Override
                 public void onReceive(MessageObject messageObject) {
@@ -48,7 +54,7 @@ public class Attend {
                     if (messageObject.getMessageType() == MessageType.CheckIn && messageObject.getAttStatus() == AttStatus.signed) {
                         try {
                             //将学生签到状态修改进数据表中
-                        DatabaseHelper.updateAttendance(messageObject.getStuNo(), messageObject.getAttStatus());
+                            DatabaseHelper.updateAttendance(messageObject.getStuNo(), messageObject.getAttStatus(),messageObject.getLocalDateTime());
                         } catch (NoConfigException e) {
                             JOptionPane.showMessageDialog(null, "没有数据库配置文件", "警告", JOptionPane.ERROR_MESSAGE);
                             LOGGER.error("No configuration", e);
@@ -61,7 +67,7 @@ public class Attend {
                     }
                 }
             });
-*/
+        }
 
         //未签表格的鼠标点击事件
         table_undo.addMouseListener(new MouseAdapter() {
@@ -75,13 +81,9 @@ public class Attend {
                     Object[] options = {AttStatus.absence, AttStatus.signed, AttStatus.leave_early, AttStatus.late, AttStatus.personal_leave, AttStatus.public_holiday, AttStatus.sick_leave, AttStatus.not_signed};
                     AttStatus attStatus = (AttStatus) JOptionPane.showInputDialog(null, "选择您所要修改的签到状态", "提示",
                             JOptionPane.PLAIN_MESSAGE, null, options, options[0]);
-                    LOGGER.debug("attStatus:    " + attStatus);
+
-                    if (attStatus == null) {
+                    if (attStatus != null) {
-                        LOGGER.debug("test:    " + table_undo.getModel().getValueAt(row, col));
-                        table_undo.getModel().setValueAt(AttStatus.not_signed, row, col);
-                    }
                         String modifyStat = String.valueOf(attStatus);
-                    if (modifyStat != null) {
                         //将修改后的状态显示出来
                         table_undo.getModel().setValueAt(modifyStat, row, col);
                         //将修改在数据库中更改
@@ -98,13 +100,82 @@ public class Attend {
                             JOptionPane.showMessageDialog(null, "未查询到该数据", "错误", JOptionPane.ERROR_MESSAGE);
                             LOGGER.error("DependenciesNotFoundException", e);
                         }
-                    } else {
+                        bt_refresh.doClick();
-                        JOptionPane.showMessageDialog(null, "您未进行选择", "提示", JOptionPane.INFORMATION_MESSAGE);
                     }
                 }
             }
         });
+        //刷新按钮的监听
+        bt_refresh.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                //清空列表
+                ((DefaultTableModel)table_already.getModel()).setRowCount(0);
+                ((DefaultTableModel)table_undo.getModel()).setRowCount(0);
+                attendancesList.clear();
+                alreadyList.clear();
+                undoList.clear();
+                //重新加载
+                try {
+                    attendancesList.addAll(DatabaseHelper.selectAttendanceByCourse(Long.parseLong(courseID)));  //导入该课程考勤名单
+                    for (Attendance attendance : attendancesList) {
+                        if (attendance.getAttStatus() == AttStatus.signed) {        //筛选出已签到的考勤列表
+                            alreadyList.add(attendance);
+                        } else {
+                            undoList.add(attendance);
                         }
+                    }
+                } catch (DependenciesNotFoundException ex) {
+                    throw new RuntimeException(ex);
+                } catch (NoConfigException ex) {
+                    throw new RuntimeException(ex);
+                } catch (SQLException ex) {
+                    throw new RuntimeException(ex);
+                }
+                //已签考勤表格
+                alreadyTableModel = new DefaultTableModel(t1_columnTitle, 0) {
+                    @Override
+                    public boolean isCellEditable(int row, int column) {
+                        return false;
+                    }
+                };
+                if (alreadyList != null) {
+                    for (Attendance attendance : alreadyList) {
+                        String stuID = String.valueOf(attendance.getStudent().getStuID());
+                        String stuName = String.valueOf(attendance.getStudent().getStuName());
+                        LocalDateTime attTime = attendance.getAttTime();
+                        String attTime1 = attTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
+                        Object row[] = {stuID, stuName, attTime1};
+                        alreadyTableModel.addRow(row);
+                    }
+                }
+                attend.table_already.setModel(alreadyTableModel);
+
+                //未签考勤表格
+                undoTableModel = new DefaultTableModel(t2_columnTitle, 0);
+                for (Attendance attendance : undoList) {
+                    String attID = attendance.getAttID();
+                    String stuID = String.valueOf(attendance.getStudent().getStuID());
+                    String stuName = String.valueOf(attendance.getStudent().getStuName());
+                    AttStatus attStatus = attendance.getAttStatus();
+                    Object row[] = {attID, stuID, stuName, String.valueOf(attStatus)};
+                    undoTableModel.addRow(row);
+                }
+                attend.table_undo.setModel(undoTableModel);
+                //设置第一列隐藏
+                TableColumn tableColumn = attend.table_undo.getColumnModel().getColumn(0);
+                tableColumn.setWidth(0);
+                tableColumn.setMinWidth(0);
+                tableColumn.setPreferredWidth(0);
+                tableColumn.setMaxWidth(0);
+                attend.table_undo.getTableHeader().getColumnModel().getColumn(0).setMaxWidth(0);
+                attend.table_undo.getTableHeader().getColumnModel().getColumn(0).setMinWidth(0);
+                attend.table_undo.setCellSelectionEnabled(true);
+
+            }
+        });
+    }
+
 
     public static void main(String[] args) {
         frame.setContentPane(attend.rootPanel);
@@ -143,7 +214,7 @@ public class Attend {
             throw new RuntimeException(e);
         }
         //已签考勤表格
-        DefaultTableModel alreadyTableModel = new DefaultTableModel(t1_columnTitle, 0) {
+        alreadyTableModel = new DefaultTableModel(t1_columnTitle, 0) {
             @Override
             public boolean isCellEditable(int row, int column) {
                 return false;
@@ -162,9 +233,13 @@ public class Attend {
         attend.table_already.setModel(alreadyTableModel);
 
         //未签考勤表格
-        DefaultTableModel undoTableModel = new DefaultTableModel(t2_columnTitle, 0);
+        undoTableModel = new DefaultTableModel(t2_columnTitle, 0){
+            @Override
+            public boolean isCellEditable(int row, int column) {
+                return false;
+            }
+        };
         for (Attendance attendance : undoList) {
-            LOGGER.debug(attendance.getAttID());
             String attID = attendance.getAttID();
             String stuID = String.valueOf(attendance.getStudent().getStuID());
             String stuName = String.valueOf(attendance.getStudent().getStuName());
@@ -181,10 +256,8 @@ public class Attend {
         tableColumn.setMaxWidth(0);
         attend.table_undo.getTableHeader().getColumnModel().getColumn(0).setMaxWidth(0);
         attend.table_undo.getTableHeader().getColumnModel().getColumn(0).setMinWidth(0);
-
-        LOGGER.debug(table_undo.getColumnModel().getColumnCount());
-        LOGGER.debug(undoTableModel.getColumnCount());
         attend.table_undo.setCellSelectionEnabled(true);
+
         frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
         frame.setVisible(true);
 

Teacher/src/main/java/com/cfive/classroom/teacher/CheckIn.java

@@ -78,7 +78,7 @@ public class CheckIn {
                 number = n1 + n2 + n3 + n4;
                 if (number != null) {
                     LOGGER.info(number);
-                    teacherNet.sendAllMessage(new MessageObject(null, null, number, null, null, null, MessageType.CheckIn));
+                    teacherNet.sendAllMessage(new MessageObject(null, null, number, null, null, null,null,MessageType.CheckIn));
                     JOptionPane.showMessageDialog(null, "签到码发布成功", "消息", JOptionPane.INFORMATION_MESSAGE);
                     frame.dispose();
                 } else {

Teacher/src/main/java/com/cfive/classroom/teacher/Main.java

@@ -124,7 +124,7 @@ public class Main {
                         }
                         JOptionPane.showMessageDialog(null, "恭喜以下同学被选中：\n\t\n" + count);
                         //将选人结果群发出去
-                        teacherNet.sendAllMessage(new MessageObject(null, null, null, null, count, null, MessageType.Select));
+                        teacherNet.sendAllMessage(new MessageObject(null, null, null, null, count, null, null,MessageType.Select));
                     } else {
                         JOptionPane.showMessageDialog(null, "学生名单未导入", "错误", JOptionPane.ERROR_MESSAGE);
                     }
@@ -152,6 +152,7 @@ public class Main {
         });
 
         //主界面线程监听
+        if(teacherNet!=null){
             teacherNet.setOnReceiveListener(new ReceiveListener() {
                 @Override
                 public void onReceive(MessageObject messageObject) {
@@ -167,6 +168,8 @@ public class Main {
             });
         }
 
+    }
+
     public static void main(String[] args) {
         frame.setContentPane(main.rootPanel);
         frame.pack();

Teacher/src/main/java/com/cfive/classroom/teacher/SendMessage.java

@@ -16,7 +16,7 @@ import java.time.format.DateTimeFormatter;
 public class SendMessage {
     private  static final SendMessage sendMessage=new SendMessage();
 
-    private static  JFrame frame = new JFrame("SendMessage");
+    private static  JFrame frame = new JFrame("发送消息");
     private JPanel rootPanel;
     private JTextArea messageInput;
     private JButton bt_sendMessage;
@@ -48,7 +48,7 @@ public class SendMessage {
                 if(messageToAll!=null){
                     LocalDateTime sendTime = LocalDateTime.now();
                     messageShow.append("@所有人:  "+sendTime.format(DateTimeFormatter.ofPattern("yyyy年MM月dd日 HH时mm分ss秒"))+'\n'+messageToAll+'\n');
-                    MessageObject messageObject = new MessageObject(null,null,null,"@所有人:"+messageToAll,null,null,MessageType.ChatToAll);
+                    MessageObject messageObject = new MessageObject(null,null,null,"@所有人:"+messageToAll,null,null,null,MessageType.ChatToAll);
                     teacherNet.sendAllMessage(messageObject);
                     messageInput.setText("");
                 }else {

Teacher/src/main/java/com/cfive/classroom/teacher/SignIn.java

@@ -11,6 +11,7 @@ import org.apache.logging.log4j.Logger;
 import javax.swing.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
+import java.net.NoRouteToHostException;
 import java.security.NoSuchAlgorithmException;
 import java.security.spec.InvalidKeySpecException;
 import java.sql.SQLException;
@@ -25,6 +26,7 @@ public class SignIn {
     private JPasswordField password_input;
     private String workerNo,password;
     private static final Logger LOGGER = LogManager.getLogger();
+    private static boolean isConnectedToDatabase = false;
     public static void main(String[] args) {
         FlatLightLaf.setup();
 
@@ -49,6 +51,7 @@ public class SignIn {
                         } else {
                             JOptionPane.showMessageDialog(null, "密码错误，请重新输入", "错误！！", JOptionPane.ERROR_MESSAGE);
                         }
+                        isConnectedToDatabase = true;
                     } catch (NoConfigException ex) {
                         JOptionPane.showMessageDialog(null, "没有数据库配置文件", "警告", JOptionPane.ERROR_MESSAGE);
                         LOGGER.error("No configuration", e);
@@ -62,6 +65,11 @@ public class SignIn {
                         LOGGER.error("NoSuchAlgorithmException", e);
                     } catch (InvalidKeySpecException ex) {
                         LOGGER.error("InvalidKeySpecException", e);
+                    } finally {
+                        if (!isConnectedToDatabase) {
+                            JOptionPane.showMessageDialog(null, "无法连接到数据库", "错误", JOptionPane.ERROR_MESSAGE);
+                        }
+                        isConnectedToDatabase = false;
                     }
                 }
 

Teacher/src/test/java/com/cfive/classroom/teacher/TeacherTest.java

@@ -0,0 +1,32 @@
+package com.cfive.classroom.teacher;
+
+import com.cfive.classroom.library.database.DatabaseHelper;
+import com.cfive.classroom.library.database.util.DependenciesNotFoundException;
+import com.cfive.classroom.library.database.util.NoConfigException;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.junit.jupiter.api.Test;
+
+import java.security.NoSuchAlgorithmException;
+import java.security.spec.InvalidKeySpecException;
+import java.sql.SQLException;
+
+public class TeacherTest {
+    private static final Logger LOGGER = LogManager.getLogger();
+    @Test
+    void modifyPw(){
+        try {
+            DatabaseHelper.changePasswdInTeacher(Long.valueOf("1002"),"10021002");
+        } catch (NoConfigException e) {
+            throw new RuntimeException(e);
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        } catch (DependenciesNotFoundException e) {
+            throw new RuntimeException(e);
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(e);
+        } catch (InvalidKeySpecException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}