TeacherUI:JTable reModify by 6.22 00:00

MySQL.sql

@@ -175,7 +175,7 @@ SELECT attID,
        teacher.salt,
        faculty.facID,
        facName
-FROM attendance,
+FROM attend,
      student,
      class,
      major,
@@ -183,8 +183,8 @@ FROM attendance,
      subject,
      teacher,
      faculty
-where attendance.courID = course.courID
+where attend.courID = course.courID
-  AND attendance.stuID = student.stuID
+  AND attend.stuID = student.stuID
   AND class.classID = student.classID
   AND class.majorID = major.majorID
   AND major.facID = faculty.facID

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.Attendance">
+<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="2" 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="1" 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"/>
@@ -27,12 +27,16 @@
             <constraints>
               <tabbedpane title="已签"/>
             </constraints>
-            <properties/>
+            <properties>
+              <enabled value="false"/>
+            </properties>
             <border type="none"/>
             <children>
               <component id="8aba9" class="javax.swing.JTable" binding="table_already">
                 <constraints/>
-                <properties/>
+                <properties>
+                  <enabled value="true"/>
+                </properties>
               </component>
             </children>
           </scrollpane>
@@ -45,21 +49,15 @@
             <children>
               <component id="6cfbd" class="javax.swing.JTable" binding="table_undo">
                 <constraints/>
-                <properties/>
+                <properties>
+                  <enabled value="true"/>
+                  <font name="Microsoft YaHei" size="14" style="0"/>
+                </properties>
               </component>
             </children>
           </scrollpane>
         </children>
       </tabbedpane>
-      <component id="babc6" class="javax.swing.JLabel" binding="test">
-        <constraints>
-          <grid row="1" column="0" row-span="1" col-span="1" vsize-policy="0" hsize-policy="0" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
-        </constraints>
-        <properties>
-          <font size="20" style="1"/>
-          <text value=""/>
-        </properties>
-      </component>
     </children>
   </grid>
 </form>

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

@@ -0,0 +1,194 @@
+package com.cfive.classroom.teacher;
+
+import com.cfive.classroom.library.database.DatabaseHelper;
+import com.cfive.classroom.library.database.bean.AttStatus;
+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 org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import javax.swing.*;
+import javax.swing.event.ListSelectionEvent;
+import javax.swing.event.ListSelectionListener;
+import javax.swing.table.*;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.sql.SQLException;
+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();
+    private static final JFrame frame = new JFrame("考勤情况");
+    private JPanel rootPanel;
+    private JTabbedPane tabbedPane1;
+    private final Object[] t1_columnTitle = {"学号", "姓名", "签到时间"};
+    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 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 static final Logger LOGGER = LogManager.getLogger();
+
+    public Attend() {
+        //学生签到信息监听
+/*
+        teacherNet.setOnReceiveListener(new ReceiveListener() {
+            @Override
+            public void onReceive(MessageObject messageObject) {
+                //判断该信息类型是否为签到并且签到状态是否为已签
+                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());
+                    } 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);
+                    } catch (SQLException e) {
+                        JOptionPane.showMessageDialog(null, "数据库出错", "警告", JOptionPane.ERROR_MESSAGE);
+                        LOGGER.error("SQLException", e);
+                    } catch (DependenciesNotFoundException e) {
+                        LOGGER.error("DependenciesNotFoundException", e);
+                    }
+                }
+            }
+        });
+*/
+
+        //未签表格的鼠标点击事件
+        table_undo.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                //获取鼠标所点击的行和列
+                int row = table_undo.getSelectedRow();
+                int col = table_undo.getSelectedColumn();
+                //修改学生签到状态
+                if (col == 3) {
+                    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) {
+                        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
+                        try {
+                            LocalDateTime currentTime = LocalDateTime.now();
+                            DatabaseHelper.updateAttendance(String.valueOf(table_undo.getModel().getValueAt(row, 0)), attStatus, currentTime);
+                        } 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);
+                        } catch (SQLException ex) {
+                            JOptionPane.showMessageDialog(null, "数据库出错", "警告", JOptionPane.ERROR_MESSAGE);
+                            LOGGER.error("SQLException", e);
+                        } catch (DependenciesNotFoundException ex) {
+                            JOptionPane.showMessageDialog(null, "未查询到该数据", "错误", JOptionPane.ERROR_MESSAGE);
+                            LOGGER.error("DependenciesNotFoundException", e);
+                        }
+                    } else {
+                        JOptionPane.showMessageDialog(null, "您未进行选择", "提示", JOptionPane.INFORMATION_MESSAGE);
+                    }
+                }
+            }
+        });
+    }
+
+    public static void main(String[] args) {
+        frame.setContentPane(attend.rootPanel);
+        frame.setSize(600, 400);
+        frame.setLocationRelativeTo(null);
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.pack();
+        frame.setVisible(false);
+
+    }
+
+    public void start(TeacherNet teacherNet1, String courseID) {
+        frame.setContentPane(attend.rootPanel);
+        frame.setSize(600, 400);
+        frame.setLocationRelativeTo(null);
+        frame.setResizable(false);
+        attend.teacherNet = teacherNet1;
+        attend.courseID = courseID;
+        try {
+            attendancesList.addAll(DatabaseHelper.selectAttendanceByCourse(Long.parseLong(courseID)));  //导入该课程考勤名单
+            LOGGER.debug("attendanceList:" + attendancesList);
+            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);
+                }
+            }
+            LOGGER.debug("alreadyList:" + alreadyList);
+            LOGGER.debug("undoList:" + undoList);
+        } catch (DependenciesNotFoundException e) {
+            throw new RuntimeException(e);
+        } catch (NoConfigException e) {
+            throw new RuntimeException(e);
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+        //已签考勤表格
+        DefaultTableModel 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
+        DefaultTableModel undoTableModel = new DefaultTableModel(t2_columnTitle, 0);
+        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());
+            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);
+
+        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/Attendance.java

@@ -1,119 +0,0 @@
-package com.cfive.classroom.teacher;
-
-import com.cfive.classroom.library.database.DatabaseHelper;
-import com.cfive.classroom.library.database.bean.AttStatus;
-import com.cfive.classroom.library.database.bean.Course;
-import com.cfive.classroom.library.database.bean.Student;
-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.ListSelectionListener;
-import javax.swing.event.TableModelEvent;
-import javax.swing.event.TableModelListener;
-import javax.swing.table.*;
-import java.awt.event.ComponentAdapter;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.List;
-
-public class Attendance {
-    private static final Attendance attendance=new Attendance();
-    private static final JFrame frame = new JFrame("考勤情况");
-    private JPanel rootPanel;
-    private JTabbedPane tabbedPane1;
-    private Object[] t1_columnTitle = {"学号" , "姓名" , "签到时间"};
-    private Object[] t2_columnTitle={"学号","姓名","签到状态"};
-    private Object[][] data={{"a","b","c"},{"d","e","f"},{"1","2","3"}};
-    private JTable table_already;
-    private JTable table_undo;
-    private JLabel test;
-    private TeacherNet teacherNet;
-    private String courseID;
-    private final List<Student> studentList = new ArrayList<>();
-    private static final Logger LOGGER= LogManager.getLogger();
-
-    public Attendance() {
-        //学生签到信息监听
-        teacherNet.setOnReceiveListener(new ReceiveListener() {
-            @Override
-            public void onReceive(MessageObject messageObject) {
-                //判断该信息类型是否为签到并且签到状态是否为已签
-                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());
-                    } 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);
-                    } catch (SQLException e) {
-                        JOptionPane.showMessageDialog(null,"数据库出错","警告",JOptionPane.ERROR_MESSAGE);
-                        LOGGER.error("SQLException",e);
-                    } catch (DependenciesNotFoundException e) {
-                        LOGGER.error("DependenciesNotFoundException",e);
-                    }
-                }
-            }
-        });
-
-
-        table_undo.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
-            @Override
-            public void valueChanged(ListSelectionEvent e) {
-                int row = table_undo.getSelectedRow();
-                // int col = table_undo.getSelectedColumn();
-                String newString=table_undo.getValueAt(row,2).toString();
-                attendance.test.setText(newString);
-                LOGGER.info(newString);
-            }
-        });
-    }
-
-    public static void main(String[] args) {
-        frame.setContentPane(attendance.rootPanel);
-        frame.setSize(600,400);
-        frame.setLocationRelativeTo(null);
-        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
-        frame.pack();
-        frame.setVisible(false);
-
-    }
-    public  void start(TeacherNet teacherNet1,String courseID){
-        frame.setContentPane(attendance.rootPanel);
-        frame.setSize(600,400);
-        frame.setLocationRelativeTo(null);
-        frame.setResizable(false);
-        attendance.teacherNet=teacherNet1;
-        attendance.courseID=courseID;
-        try {
-            studentList.addAll(DatabaseHelper.selectStudentsFromCourse(Long.parseLong(courseID)));  //导入该课程学生名单
-        } catch (DependenciesNotFoundException e) {
-            throw new RuntimeException(e);
-        } catch (NoConfigException e) {
-            throw new RuntimeException(e);
-        } catch (SQLException e) {
-            throw new RuntimeException(e);
-        }
-        //已签考勤表格
-        DefaultTableModel alreadyTableModel=new DefaultTableModel(data,t1_columnTitle);
-        alreadyTableModel.setColumnCount(3);
-        attendance.table_already.setModel(alreadyTableModel);
-        //未签考勤表格
-        DefaultTableModel undoTableModel=new DefaultTableModel(data,t2_columnTitle);
-        undoTableModel.setColumnCount(3);
-        attendance.table_undo.setModel(undoTableModel);
-        attendance.table_undo.setCellSelectionEnabled(true);
-        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
-        frame.setVisible(true);
-
-
-    }
-
-}

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

@@ -12,7 +12,7 @@ import java.security.spec.InvalidKeySpecException;
 import java.sql.SQLException;
 
 public class ChangePassword {
-    private static final ChangePassword changePassword=new ChangePassword();
+    private static final ChangePassword changePassword = new ChangePassword();
     private static JFrame frame = new JFrame("修改密码");
     private JPanel rootPanel;
     private JTextField workNo_input;
@@ -20,29 +20,29 @@ public class ChangePassword {
     private JButton confirm;
     private JPasswordField newPw_ok;
     private JPasswordField newPassword;
-    private  String workNo,password1,password2;
+    private String workNo, password1, password2;
     private static final Logger LOGGER = LogManager.getLogger();
 
 
     public ChangePassword() {
         confirm.addActionListener(e -> {
-            if(check()){
+            if (check()) {
                 //将修改后的密码在数据表修改
                 try {
-                    DatabaseHelper.changePasswdInTeacher(Long.valueOf(workNo_input.getText()),String.valueOf(newPw_ok.getPassword()));
+                    DatabaseHelper.changePasswdInTeacher(Long.valueOf(workNo_input.getText()), String.valueOf(newPw_ok.getPassword()));
                     LOGGER.debug(String.valueOf(newPw_ok.getPassword()));
                 } catch (NoConfigException ex) {
-                    JOptionPane.showMessageDialog(null,"没有数据库配置文件","警告",JOptionPane.ERROR_MESSAGE);
+                    JOptionPane.showMessageDialog(null, "没有数据库配置文件", "警告", JOptionPane.ERROR_MESSAGE);
                     LOGGER.error("No configuration", e);
                 } catch (SQLException ex) {
-                    JOptionPane.showMessageDialog(null,"数据库出错","警告",JOptionPane.ERROR_MESSAGE);
+                    JOptionPane.showMessageDialog(null, "数据库出错", "警告", JOptionPane.ERROR_MESSAGE);
-                    LOGGER.error("SQLException",e);
+                    LOGGER.error("SQLException", e);
                 } catch (DependenciesNotFoundException ex) {
-                    LOGGER.error("DependenciesNotFoundException",e);
+                    LOGGER.error("DependenciesNotFoundException", e);
                 } catch (NoSuchAlgorithmException ex) {
-                    LOGGER.error("NoSuchAlgorithmException",e);
+                    LOGGER.error("NoSuchAlgorithmException", e);
                 } catch (InvalidKeySpecException ex) {
-                    LOGGER.error("InvalidKeySpecException",e);
+                    LOGGER.error("InvalidKeySpecException", e);
                 }
                 frame.dispose();
             }
@@ -56,16 +56,16 @@ public class ChangePassword {
 
         frame.setContentPane(changePassword.rootPanel);
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
-        frame.setSize(600,400);
+        frame.setSize(600, 400);
         frame.setVisible(false);
     }
 
     public void start(String workNo) {
         frame.setContentPane(changePassword.rootPanel);
-        frame.setSize(600,400);
+        frame.setSize(600, 400);
         frame.setLocationRelativeTo(null);
         frame.setResizable(false);
-        changePassword.workNo=workNo;
+        changePassword.workNo = workNo;
         frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
         frame.setVisible(true);
     }
@@ -73,16 +73,15 @@ public class ChangePassword {
     private boolean check() {
         password1 = String.valueOf(changePassword.newPw_ok.getPassword());
         password2 = String.valueOf(changePassword.newPassword.getPassword());
-        if(String.valueOf(changePassword.workNo_input.getText()).equals(workNo))
+        if (String.valueOf(changePassword.workNo_input.getText()).equals(workNo)) {
-        {
+            if (password1.length() == 0 || password2.length() == 0) {
-            if (password1.length()==0 || password2.length()==0) {
+                JOptionPane.showMessageDialog(null, "输入的密码为空");
-                JOptionPane.showMessageDialog(null,"输入的密码为空");
                 return false;
             } else if (!password1.equals(password2)) {
                 JOptionPane.showMessageDialog(null, "两次输入密码不同");
                 return false;
             } else return true;
-        }else {
+        } else {
             JOptionPane.showMessageDialog(null, "请输入正确的工号");
             return false;
         }

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

@@ -13,8 +13,8 @@ import java.awt.event.KeyAdapter;
 import java.awt.event.KeyEvent;
 
 public class CheckIn {
-    private static final CheckIn checkIn=new CheckIn();
+    private static final CheckIn checkIn = new CheckIn();
-    private static final JFrame frame= new JFrame("发布签到码");
+    private static final JFrame frame = new JFrame("发布签到码");
     private JPanel rootPanel;
     private JTextField textField1;
     private JTextField textField2;
@@ -22,9 +22,9 @@ public class CheckIn {
     private JTextField textField4;
     private JButton bt_confim;
     private JButton bt_cancel;
-    private String n1,n2,n3,n4,number;
+    private String n1, n2, n3, n4, number;
     private TeacherNet teacherNet;
-    private static final Logger LOGGER= LogManager.getLogger();
+    private static final Logger LOGGER = LogManager.getLogger();
 
     public CheckIn() {
         //取消按钮的监听
@@ -38,8 +38,8 @@ public class CheckIn {
         textField1.addKeyListener(new KeyAdapter() {
             @Override
             public void keyTyped(KeyEvent e) {
-                n1=textField1.getText();
+                n1 = textField1.getText();
-                if(n1.length()>=1){
+                if (n1.length() >= 1) {
                     e.consume();
                 }
             }
@@ -47,8 +47,8 @@ public class CheckIn {
         textField2.addKeyListener(new KeyAdapter() {
             @Override
             public void keyTyped(KeyEvent e) {
-                n2=textField2.getText();
+                n2 = textField2.getText();
-                if(n2.length()>=1){
+                if (n2.length() >= 1) {
                     e.consume();
                 }
             }
@@ -56,16 +56,17 @@ public class CheckIn {
         textField3.addKeyListener(new KeyAdapter() {
             @Override
             public void keyTyped(KeyEvent e) {
-                n3=textField3.getText();
+                n3 = textField3.getText();
-                if(n3.length()>=1){
+                if (n3.length() >= 1) {
                     e.consume();
                 }
             }
-        });textField4.addKeyListener(new KeyAdapter() {
+        });
+        textField4.addKeyListener(new KeyAdapter() {
             @Override
             public void keyTyped(KeyEvent e) {
-                n4=textField4.getText();
+                n4 = textField4.getText();
-                if(n4.length()>=1){
+                if (n4.length() >= 1) {
                     e.consume();
                 }
             }
@@ -74,14 +75,14 @@ public class CheckIn {
         bt_confim.addActionListener(new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent e) {
-                number=n1+n2+n3+n4;
+                number = n1 + n2 + n3 + n4;
-                if(number!=null){
+                if (number != null) {
                     LOGGER.info(number);
-                    teacherNet.sendAllMessage(new MessageObject(null,null,number,null,null, MessageType.CheckIn));
+                    teacherNet.sendAllMessage(new MessageObject(null, null, number, null, null, null, MessageType.CheckIn));
-                    JOptionPane.showMessageDialog(null,"签到码发布成功","消息",JOptionPane.INFORMATION_MESSAGE);
+                    JOptionPane.showMessageDialog(null, "签到码发布成功", "消息", JOptionPane.INFORMATION_MESSAGE);
                     frame.dispose();
-                }else {
+                } else {
-                    JOptionPane.showMessageDialog(null,"签到码不能为空","错误",JOptionPane.ERROR_MESSAGE);
+                    JOptionPane.showMessageDialog(null, "签到码不能为空", "错误", JOptionPane.ERROR_MESSAGE);
                 }
 
             }
@@ -94,12 +95,13 @@ public class CheckIn {
         frame.pack();
         frame.setVisible(false);
     }
-    public  void start(TeacherNet teacherNet1){
+
+    public void start(TeacherNet teacherNet1) {
         frame.setContentPane(checkIn.rootPanel);
-        frame.setSize(600,400);
+        frame.setSize(600, 400);
         frame.setLocationRelativeTo(null);
         frame.setResizable(false);
-        checkIn.teacherNet=teacherNet1;
+        checkIn.teacherNet = teacherNet1;
         frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
         frame.setVisible(true);
     }

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

@@ -20,7 +20,7 @@ public class ClassList {
     private JButton bt_enter;
     private JComboBox comboBox;
     private JPanel selectPanel;
-    private String workerNo,courseID,subName;
+    private String workerNo, courseID, subName;
     private final List<Course> courseList = new ArrayList<>();
     private static final Logger LOGGER = LogManager.getLogger();
 
@@ -31,9 +31,9 @@ public class ClassList {
                 if (!Objects.equals(classList.comboBox.getSelectedItem(), "--请选择--")) {          //判断是否有选择内容
                     String select = classList.comboBox.getSelectedItem().toString();
                     courseID = select.substring(0, select.indexOf(" "));
-                    subName=select.substring(select.indexOf(" ")+1);
+                    subName = select.substring(select.indexOf(" ") + 1);
-                    LOGGER.debug(courseID+" "+subName);
+                    LOGGER.debug(courseID + " " + subName);
-                    Main.start(workerNo,courseID,subName);
+                    Main.start(workerNo, courseID, subName);
                 } else {
                     JOptionPane.showMessageDialog(null, "请选择您想要进入的课程", "温馨提示！", JOptionPane.WARNING_MESSAGE);
                 }
@@ -60,7 +60,7 @@ public class ClassList {
             classList.comboBox.addItem("--请选择--");
             courseList.addAll(DatabaseHelper.queryCourses(Long.parseLong(classList.workerNo)));
             for (Course course : courseList) {
-                classList.comboBox.addItem(course.getCourID()+" "+course.getSubject().getSubName());
+                classList.comboBox.addItem(course.getCourID() + " " + course.getSubject().getSubName());
             }
         } catch (NoConfigException e) {
             JOptionPane.showMessageDialog(null, "没有数据库配置文件", "警告", JOptionPane.ERROR_MESSAGE);

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

@@ -1,9 +1,7 @@
 package com.cfive.classroom.teacher;
 
 import com.cfive.classroom.library.database.DatabaseHelper;
-import com.cfive.classroom.library.database.bean.Course;
 import com.cfive.classroom.library.database.bean.Student;
-import com.cfive.classroom.library.database.bean.Subject;
 import com.cfive.classroom.library.database.util.DependenciesNotFoundException;
 import com.cfive.classroom.library.database.util.NoConfigException;
 import com.cfive.classroom.library.net.TeacherNet;
@@ -32,8 +30,9 @@ public class Main {
     private JButton changePasswordButton;
     private JTextField workNo_show;
     private JTextField subName_show;
-    private String workNo,courseID;
+    private String workNo, courseID;
-    private final List<Student> studentList = new ArrayList<>();;
+    private final List<Student> studentList = new ArrayList<>();
+    ;
     private String[] student;
     private TeacherNet teacherNet;
     private final Logger LOGGER = LogManager.getLogger();
@@ -78,8 +77,8 @@ public class Main {
         bt_attendance.addActionListener(new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent e) {
-                Attendance attendance = new Attendance();
+                Attend attend = new Attend();
-                attendance.start(teacherNet,courseID);
+                attend.start(teacherNet, courseID);
             }
         });
 
@@ -88,7 +87,7 @@ public class Main {
             @Override
             public void actionPerformed(ActionEvent e) {
                 int person;
-                String count="";
+                String count = "";
                 Object[] dropList = {"提问1个同学", "提问2个同学", "提问3个同学", "提问4个同学", "提问5个同学", "提问6个同学", "提问7个同学"};
                 Object selectedValue = JOptionPane.showInputDialog(null, "选择提问同学个数", "随机选人，持续工作中...",
                         JOptionPane.INFORMATION_MESSAGE, null, dropList, dropList[0]);  //下拉列表的内容：选择提问的人数
@@ -121,12 +120,12 @@ public class Main {
                         for (int s = 0; s < arr.length; s++) {  //遍历该数组并把每一个随机数所对应的人放到count中
                             person = Integer.parseInt(arr[s]);
                             count += student[person];
-                            count+="  ";
+                            count += "  ";
                         }
                         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, MessageType.Select));
-                    }else {
+                    } else {
                         JOptionPane.showMessageDialog(null, "学生名单未导入", "错误", JOptionPane.ERROR_MESSAGE);
                     }
                 } catch (DependenciesNotFoundException ex) {
@@ -175,7 +174,7 @@ public class Main {
         frame.setVisible(false);
     }
 
-    public static void start(String workerNo,String courseID,String subName) {
+    public static void start(String workerNo, String courseID, String subName) {
         frame.setContentPane(main.rootPanel);
         frame.setSize(600, 400);
         frame.setLocationRelativeTo(null);

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

@@ -10,6 +10,8 @@ import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.ComponentAdapter;
 import java.text.SimpleDateFormat;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
 
 public class SendMessage {
     private  static final SendMessage sendMessage=new SendMessage();
@@ -28,8 +30,8 @@ public class SendMessage {
                 @Override
                 public void onReceive(MessageObject messageObject) {
                     if(messageObject.getMessageType()==MessageType.Chat){
-                        SimpleDateFormat sendTime = new SimpleDateFormat("yyyy年MM月dd日 HH时mm分ss秒");
+                        LocalDateTime sendTime = LocalDateTime.now();
-                        messageShow.append("学生 "+messageObject.getStuName()+": "+sendTime.format(System.currentTimeMillis())+'\n'+messageObject.getMessage());
+                        messageShow.append("学生 "+messageObject.getStuName()+": "+sendTime.format(DateTimeFormatter.ofPattern("yyyy年MM月dd日 HH时mm分ss秒"))+'\n'+messageObject.getMessage());
                         System.out.println();
                     }
 
@@ -44,8 +46,8 @@ public class SendMessage {
             public void actionPerformed(ActionEvent e) {
                 String messageToAll = messageInput.getText();
                 if(messageToAll!=null){
-                    SimpleDateFormat sendTime = new SimpleDateFormat("yyyy年MM月dd日 HH时mm分ss秒");
+                    LocalDateTime sendTime = LocalDateTime.now();
-                    messageShow.append("@所有人:  "+sendTime.format(System.currentTimeMillis())+'\n'+messageToAll+'\n');
+                    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);
                     teacherNet.sendAllMessage(messageObject);
                     messageInput.setText("");

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

@@ -56,7 +56,8 @@ public class SignIn {
                         JOptionPane.showMessageDialog(null,"数据库出错","警告",JOptionPane.ERROR_MESSAGE);
                         LOGGER.error("SQLException",e);
                     } catch (DependenciesNotFoundException ex) {
-                        LOGGER.error("DependenciesNotFoundException",e);
+                        JOptionPane.showMessageDialog(null,"未查询到该数据","错误",JOptionPane.ERROR_MESSAGE);
+                        LOGGER.error("DependenciesNotFoundException", e);
                     } catch (NoSuchAlgorithmException ex) {
                         LOGGER.error("NoSuchAlgorithmException",e);
                     } catch (InvalidKeySpecException ex) {