ADD file via upload

CoursemPanel.java

@@ -0,0 +1,162 @@
+package com.WR.StudentMS.view;
+
+import javax.swing.*;
+import javax.swing.table.DefaultTableModel;
+import com.WR.StudentMS.dao.mysql.Coursemdaoimplqsy;
+import com.WR.StudentMS.model.Coursemqsy;
+import java.awt.*;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class CoursemPanel extends JPanel {
+
+    private List<Coursemqsy> coursemList; // 存储从数据库加载的课程信息列表
+    private Coursemdaoimplqsy coursemDao; // 数据访问对象
+    private JTable table; // 显示课程信息的表格
+    private DefaultTableModel model; // 表格的数据模型
+    private JTextField searchField;
+    private JButton searchButton;
+
+    public CoursemPanel() {
+        super(new BorderLayout()); // 使用BorderLayout布局管理器
+        coursemDao = new Coursemdaoimplqsy();
+        model = new DefaultTableModel();
+        initializeUI();
+        loadCourses(); // 加载课程信息
+    }
+
+    private void initializeUI() {
+        // 定义列名
+        String[] columnNames = {"课程ID", "课程名", "课程介绍"};
+        model.setColumnIdentifiers(columnNames);
+        table = new JTable(model);
+
+        // 添加表格到滚动面板
+        JScrollPane scrollPane = new JScrollPane(table);
+        add(scrollPane, BorderLayout.CENTER);
+
+        // 创建按钮面板
+        JPanel buttonPanel = new JPanel();
+        buttonPanel.setLayout(new FlowLayout());
+
+        // 添加按钮
+        JButton addButton = new JButton("添加课程信息");
+        JButton deleteButton = new JButton("删除选中的课程信息");
+        
+     // 创建搜索框和搜索按钮
+        searchField = new JTextField();
+        searchField.setPreferredSize(new Dimension(200, searchField.getPreferredSize().height));        
+        searchButton = new JButton("课程ID查询");
+
+        // 为按钮添加事件监听器
+        addButton.addActionListener(e -> addCourse());
+        deleteButton.addActionListener(e -> deleteSelectedCourse());
+        searchButton.addActionListener(e -> searchCourses());
+        // 将按钮添加到面板
+        buttonPanel.add(addButton);
+        buttonPanel.add(deleteButton);
+        buttonPanel.add(searchField);
+        buttonPanel.add(searchButton); // 添加搜索按钮到面板
+
+        // 将按钮面板添加到底部
+        add(buttonPanel, BorderLayout.SOUTH);
+    }
+
+    private void loadCourses() {
+        try {
+            // 从数据库加载课程信息并更新表格和列表
+            coursemList = coursemDao.findAllqsy();
+            model.setRowCount(0); // 清空表格
+            for (Coursemqsy coursem : coursemList) {
+                Object[] rowData = {
+                    coursem.getCourseidqsy(),
+                    coursem.getCoursenameqsy(),
+                    coursem.getJieshaoqsy()
+                };
+                model.addRow(rowData);
+            }
+        } catch (Exception e) {
+            JOptionPane.showMessageDialog(this, "加载课程信息失败: " + e.getMessage(), "错误", JOptionPane.ERROR_MESSAGE);
+        }
+    }
+
+    private void addCourse() {
+        // 弹出对话框让用户输入课程信息
+        String input = (String) JOptionPane.showInputDialog(
+            this,
+            "请输入课程信息（格式：课程ID-课程名-课程介绍）:",
+            "添加课程",
+            JOptionPane.QUESTION_MESSAGE,
+            null,
+            null,
+            null
+        );
+        if (input != null && !input.trim().isEmpty()) {
+            String[] parts = input.split("-", 3); // 修改为分割三部分
+            if (parts.length == 3) { // 确保分割成三部分
+                    Coursemqsy newCourse = new Coursemqsy();
+                    newCourse.setCourseidqsy(parts[0].trim());
+                    newCourse.setCoursenameqsy(parts[1].trim());
+                    newCourse.setJieshaoqsy(parts[2].trim());
+
+                    int result = coursemDao.createqsy(newCourse);
+                    if (result > 0) {
+                        newCourse = coursemDao.findByIdqsy(newCourse.getCourseidqsy()); // 确保可以检索到新添加的课程信息
+                        if (newCourse != null) {
+                            Object[] rowData = {
+                                newCourse.getCourseidqsy(),
+                                newCourse.getCoursenameqsy(),
+                                newCourse.getJieshaoqsy()
+                            };
+                            model.addRow(rowData); // 添加到表格
+                            JOptionPane.showMessageDialog(this, "课程信息添加成功！");
+                        } else {
+                            JOptionPane.showMessageDialog(this, "课程信息添加失败！");
+                        }
+                    } 
+                    else {
+                        JOptionPane.showMessageDialog(this, "输入格式不正确，需要课程ID-课程名-课程介绍");
+                    }
+                }
+           }
+    }
+
+    private void deleteSelectedCourse() {
+        int selectedRow = table.getSelectedRow();
+        if (selectedRow >= 0) {
+            String courseId = (String) model.getValueAt(selectedRow, 0);
+            Coursemqsy coursemToDelete = new Coursemqsy();
+            coursemToDelete.setCourseidqsy(courseId);            
+                int result = coursemDao.removeqsy(coursemToDelete);
+                if (result > 0) {
+                    model.removeRow(selectedRow); // 从表格中移除
+                    JOptionPane.showMessageDialog(this, "课程信息删除成功！");
+                } else {
+                    JOptionPane.showMessageDialog(this, "课程信息删除失败！");
+                }
+            } 
+        }
+    private void searchCourses() {
+        String searchQuery = searchField.getText();
+        if (!searchQuery.trim().isEmpty()) {
+            // 过滤课程列表，仅根据课程ID进行搜索
+            List<Coursemqsy> filteredList = coursemList.stream()
+                .filter(course -> course.getCourseidqsy().equals(searchQuery)) // 仅根据课程ID过滤
+                .collect(Collectors.toList());
+
+            // 更新表格模型以显示过滤后的课程信息
+            model.setRowCount(0); // 清空表格
+            for (Coursemqsy course : filteredList) {
+                Object[] rowData = {
+                    course.getCourseidqsy(),
+                    course.getCoursenameqsy(),
+                    course.getJieshaoqsy()
+                };
+                model.addRow(rowData);
+            }
+        } else {
+            // 如果搜索框为空，则重新加载所有课程信息
+            loadCourses();
+        }
+    }
+}