Java+MySQL实现学生信息管理系统

谁践踏了优雅 2022-05-16 01:56 330阅读 0赞

基于Java swing+MySQL实现学生信息管理系统：主要实现JDBC对学生信息进行增删改查，应付一般课设足矣，分享给大家。

**源码：**

https://github.com/ZhuangM/student.git

![1240][]

**1、 开发环境：jdk7+MySQL5+win7**

代码结构：model-dao-view

**2、 数据库设计——建库建表语句**

CREATE DATABASE student;

DROP TABLE IF EXISTS `admin`;
    CREATE TABLE `admin` (
     `id` int(11) NOT NULL AUTO_INCREMENT,
     `name` varchar(20) NOT NULL,
     `username` varchar(20) NOT NULL,
     `password` varchar(20) NOT NULL,
     PRIMARY KEY (`id`)
    ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
    
    LOCK TABLES `admin` WRITE;
    INSERT INTO `admin` VALUES (1,'admin','admin','admin');
    UNLOCK TABLES;
    
    DROP TABLE IF EXISTS `student`;
    CREATE TABLE `student` (
     `id` int(11) NOT NULL AUTO_INCREMENT,
     `name` varchar(20) NOT NULL,
     `sno` varchar(20) NOT NULL,
     `department` varchar(20) NOT NULL,
     `hometown` varchar(20) NOT NULL,
     `mark` varchar(20) NOT NULL,
     `email` varchar(20) NOT NULL,
     `tel` varchar(20) NOT NULL,
     `sex` varchar(20) NOT NULL,
     PRIMARY KEY (`id`)
    ) ENGINE=InnoDB AUTO_INCREMENT=22 DEFAULT CHARSET=utf8;
    
    LOCK TABLES `student` WRITE;
    INSERT INTO `student` VALUES (18,'张三','001','信息科学技术学院','辽宁','80','zhangsan@163.com','13888888888','男'),(19,'李四','002','理学院','上海','70','lisi@sina.com','13812341234','男'),(20,'王五','003','外国语学院','北京','88','wangwu@126.com','13698765432','女');
    UNLOCK TABLES;

**3、model——管理员、学生**

/**
    * 项目名：student
    * 修改历史：
    */
    package com.student.model;
    
    /**
    * 模块说明：admin
    * 
    */
    public class Admin {
     private int id;
     private String name;
     private String username;
     private String password;
    
     public String getName() {
       return name;
     }
    
     public void setName(String name) {
       this.name = name;
     }
    
     public int getId() {
       return id;
     }
    
     public void setId(int id) {
       this.id = id;
     }
    
     public String getUsername() {
       return username;
     }
    
     public void setUsername(String username) {
       this.username = username;
     }
    
     public String getPassword() {
       return password;
     }
    
     public void setPassword(String password) {
       this.password = password;
     }
    
    }

/**
    * 项目名：student
    * 修改历史：
    */
    package com.student.model;
    
    /**
    * 模块说明： 学生
    * 
    */
    public class Student {
     private int id;
     private String sno;// 学号
     private String name;
     private String sex;
     private String department;// 院系
     private String homeTown;// 籍贯
     private String mark;// 学分
     private String email;
     private String tel;// 联系方式
    
     public int getId() {
       return id;
     }
    
     public void setId(int id) {
       this.id = id;
     }
    
     public String getSno() {
       return sno;
     }
    
     public void setSno(String sno) {
       this.sno = sno;
     }
    
     public String getName() {
       return name;
     }
    
     public void setName(String name) {
       this.name = name;
     }
    
     public String getSex() {
       return sex;
     }
    
     public void setSex(String sex) {
       this.sex = sex;
     }
    
     public String getDepartment() {
       return department;
     }
    
     public void setDepartment(String department) {
       this.department = department;
     }
    
     public String getHomeTown() {
       return homeTown;
     }
    
     public void setHomeTown(String homeTown) {
       this.homeTown = homeTown;
     }
    
     public String getMark() {
       return mark;
     }
    
     public void setMark(String mark) {
       this.mark = mark;
     }
    
     public String getEmail() {
       return email;
     }
    
     public void setEmail(String email) {
       this.email = email;
     }
    
     public String getTel() {
       return tel;
     }
    
     public void setTel(String tel) {
       this.tel = tel;
     }
    
    }

**4、 工具类DBUtil（对jdbc进行封装）**

/**
    * 项目名：student
    * 修改历史：
    */
    package com.student.util;
    
    import java.sql.Connection;
    import java.sql.DriverManager;
    import java.sql.PreparedStatement;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    
    import com.student.AppConstants;
    
    /**
    * 模块说明：数据库工具类
    * 
    */
    public class DBUtil {
     private static DBUtil db;
    
     private Connection conn;
     private PreparedStatement ps;
     private ResultSet rs;
    
     private DBUtil() {
    
     }
    
     public static DBUtil getDBUtil() {
       if (db == null) {
         db = new DBUtil();
       }
       return db;
     }
    
     public int executeUpdate(String sql) {
       int result = -1;
       if (getConn() == null) {
         return result;
       }
       try {
         ps = conn.prepareStatement(sql);
         result = ps.executeUpdate();
       } catch (SQLException e) {
         e.printStackTrace();
       }
       return result;
     }
    
     public int executeUpdate(String sql, Object[] obj) {
       int result = -1;
       if (getConn() == null) {
         return result;
       }
       try {
         ps = conn.prepareStatement(sql);
         for (int i = 0; i < obj.length; i++) {
           ps.setObject(i + 1, obj[i]);
         }
         result = ps.executeUpdate();
         close();
       } catch (SQLException e) {
         e.printStackTrace();
       }
       return result;
     }
    
     public ResultSet executeQuery(String sql) {
       if (getConn() == null) {
         return null;
       }
       try {
         ps = conn.prepareStatement(sql);
         rs = ps.executeQuery();
       } catch (SQLException e) {
         e.printStackTrace();
       }
       return rs;
     }
    
     public ResultSet executeQuery(String sql, Object[] obj) {
       if (getConn() == null) {
         return null;
       }
       try {
         ps = conn.prepareStatement(sql);
         for (int i = 0; i < obj.length; i++) {
           ps.setObject(i + 1, obj[i]);
         }
         rs = ps.executeQuery();
       } catch (SQLException e) {
         e.printStackTrace();
       }
    
       return rs;
     }
    
     private Connection getConn() {
       try {
         if (conn == null || conn.isClosed()) {
           Class.forName(AppConstants.JDBC_DRIVER);
           conn = DriverManager.getConnection(AppConstants.JDBC_URL, AppConstants.JDBC_USERNAME,
               AppConstants.JDBC_PASSWORD);
         }
       } catch (ClassNotFoundException e) {
         System.out.println("jdbc driver is not found.");
         e.printStackTrace();
       } catch (SQLException e) {
         e.printStackTrace();
       }
       return conn;
     }
    
     public void close() {
       try {
         if (rs != null) {
           rs.close();
         }
         if (ps != null) {
           ps.close();
         }
         if (conn != null) {
           conn.close();
         }
       } catch (SQLException e) {
         e.printStackTrace();
       }
     }
    }

**5、dao：主要调用DBUtil操作相应的model——增删改查**

**BaseDAO.java**

/**
    * 项目名：student
    * 修改历史：
    */
    package com.student.base;
    
    import java.sql.ResultSet;
    import java.sql.SQLException;
    
    import com.student.DAO;
    import com.student.dao.AdminDAO;
    import com.student.dao.StudentDAO;
    import com.student.util.DBUtil;
    
    /**
    * 模块说明： DAO基类
    * 
    */
    public abstract class BaseDAO {
     protected final DBUtil db = DBUtil.getDBUtil();
     protected ResultSet rs;
     private static BaseDAO baseDAO;
    
     public BaseDAO() {
       init();
     }
    
     private void init() {
       // buildAbilityDAO();
     }
    
     // protected abstract void buildAbilityDAO();
    
     public static synchronized BaseDAO getAbilityDAO(DAO dao) {
       switch (dao) {
       case AdminDAO:
         if (baseDAO == null || baseDAO.getClass() != AdminDAO.class) {
           baseDAO = AdminDAO.getInstance();
         }
         break;
       case StudentDAO:
         if (baseDAO == null || baseDAO.getClass() != StudentDAO.class) {
           baseDAO = StudentDAO.getInstance();
         }
         break;
       default:
         break;
       }
       return baseDAO;
     }
    
     protected void destroy() {
       try {
         if (rs != null) {
           rs.close();
         }
       } catch (SQLException se) {
         se.printStackTrace();
       } finally {
         db.close();
       }
     }
    }

**AdminDAO.java**

/**
    * 项目名：student
    * 修改历史：
    */
    package com.student.dao;
    
    import java.sql.SQLException;
    
    import com.student.base.BaseDAO;
    
    /**
    * 模块说明： 管理员增删改查
    * 
    */
    public class AdminDAO extends BaseDAO {
    
     private static AdminDAO ad = null;
    
     public static synchronized AdminDAO getInstance() {
       if (ad == null) {
         ad = new AdminDAO();
       }
       return ad;
     }
    
     public boolean queryForLogin(String username, String password) {
       boolean result = false;
       if (username.length() == 0 || password.length() == 0) {
         return result;
       }
       String sql = "select * from admin where username=? and password=?";
       String[] param = { username, password };
       rs = db.executeQuery(sql, param);
       try {
         if (rs.next()) {
           result = true;
         }
       } catch (SQLException e) {
         e.printStackTrace();
       } finally {
         destroy();
       }
       return result;
     }
    
    }

**StudentDAO.java**

/**
    * 项目名：student
    * 修改历史：
    */
    package com.student.dao;
    
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.util.ArrayList;
    import java.util.List;
    
    import com.student.base.BaseDAO;
    import com.student.model.Student;
    
    /**
    * 模块说明： 学生增删改查
    * 
    */
    public class StudentDAO extends BaseDAO {
     private final int fieldNum = 9;
     private final int showNum = 15;
     private static StudentDAO sd = null;
    
     public static synchronized StudentDAO getInstance() {
       if (sd == null) {
         sd = new StudentDAO();
       }
       return sd;
     }
    
     // update
     public boolean update(Student stu) {
       boolean result = false;
       if (stu == null) {
         return result;
       }
       try {
         // check
         if (queryBySno(stu.getSno()) == 0) {
           return result;
         }
         // update
         String sql = "update student set sex=?,department=?,email=?,tel=?,hometown=?,mark=? where name=? and sno=?";
         String[] param = { stu.getSex(), stu.getDepartment(), stu.getEmail(), stu.getTel(), stu.getHomeTown(),
             stu.getMark(), stu.getName(), stu.getSno() };
         int rowCount = db.executeUpdate(sql, param);
         if (rowCount == 1) {
           result = true;
         }
       } catch (SQLException se) {
         se.printStackTrace();
       } finally {
         destroy();
       }
       return result;
     }
    
     // delete
     public boolean delete(Student stu) {
       boolean result = false;
       if (stu == null) {
         return result;
       }
       String sql = "delete from student where name=? and sno=?";
       String[] param = { stu.getName(), stu.getSno() };
       int rowCount = db.executeUpdate(sql, param);
       if (rowCount == 1) {
         result = true;
       }
       destroy();
       return result;
     }
    
     // add
     public boolean add(Student stu) {
       boolean result = false;
       if (stu == null) {
         return result;
       }
       try {
         // check
         if (queryBySno(stu.getSno()) == 1) {
           return result;
         }
         // insert
         String sql = "insert into student(name,sno,sex,department,hometown,mark,email,tel) values(?,?,?,?,?,?,?,?)";
         String[] param = { stu.getName(), stu.getSno(), stu.getSex(), stu.getDepartment(), stu.getHomeTown(),
             stu.getMark(), stu.getEmail(), stu.getTel() };
         if (db.executeUpdate(sql, param) == 1) {
           result = true;
         }
       } catch (SQLException se) {
         se.printStackTrace();
       } finally {
         destroy();
       }
       return result;
     }
    
     // query by name
     public String[][] queryByName(String name) {
       String[][] result = null;
       if (name.length() < 0) {
         return result;
       }
       List<Student> stus = new ArrayList<Student>();
       int i = 0;
       String sql = "select * from student where name like ?";
       String[] param = { "%" + name + "%" };
       rs = db.executeQuery(sql, param);
       try {
         while (rs.next()) {
           buildList(rs, stus, i);
           i++;
         }
         if (stus.size() > 0) {
           result = new String[stus.size()][fieldNum];
           for (int j = 0; j < stus.size(); j++) {
             buildResult(result, stus, j);
           }
         }
       } catch (SQLException se) {
         se.printStackTrace();
       } finally {
         destroy();
       }
    
       return result;
     }
    
     // query
     public String[][] list(int pageNum) {
       String[][] result = null;
       if (pageNum < 1) {
         return result;
       }
       List<Student> stus = new ArrayList<Student>();
       int i = 0;
       int beginNum = (pageNum - 1) * showNum;
       String sql = "select * from student limit ?,?";
       Integer[] param = { beginNum, showNum };
       rs = db.executeQuery(sql, param);
       try {
         while (rs.next()) {
           buildList(rs, stus, i);
           i++;
         }
         if (stus.size() > 0) {
           result = new String[stus.size()][fieldNum];
           for (int j = 0; j < stus.size(); j++) {
             buildResult(result, stus, j);
           }
         }
       } catch (SQLException se) {
         se.printStackTrace();
       } finally {
         destroy();
       }
    
       return result;
     }
    
     // 将rs记录添加到list中
     private void buildList(ResultSet rs, List<Student> list, int i) throws SQLException {
       Student stu = new Student();
       stu.setId(i + 1);
       stu.setName(rs.getString("name"));
       stu.setDepartment(rs.getString("department"));
       stu.setEmail(rs.getString("email"));
       stu.setHomeTown(rs.getString("hometown"));
       stu.setMark(rs.getString("mark"));
       stu.setSex(rs.getString("sex"));
       stu.setSno(rs.getString("sno"));
       stu.setTel(rs.getString("tel"));
       list.add(stu);
     }
    
     // 将list中记录添加到二维数组中
     private void buildResult(String[][] result, List<Student> stus, int j) {
       Student stu = stus.get(j);
       result[j][0] = String.valueOf(stu.getId());
       result[j][1] = stu.getName();
       result[j][2] = stu.getSno();
       result[j][3] = stu.getSex();
       result[j][4] = stu.getDepartment();
       result[j][5] = stu.getHomeTown();
       result[j][6] = stu.getMark();
       result[j][7] = stu.getEmail();
       result[j][8] = stu.getTel();
     }
    
     // query by sno
     private int queryBySno(String sno) throws SQLException {
       int result = 0;
       if ("".equals(sno) || sno == null) {
         return result;
       }
       String checkSql = "select * from student where sno=?";
       String[] checkParam = { sno };
       rs = db.executeQuery(checkSql, checkParam);
       if (rs.next()) {
         result = 1;
       }
       return result;
     }
    
    }

**6、 view：与用户交互的界面（包括LoginView.java、MainView.java、AddView.java、DeleteView.java、UpdateView.java），主要使用DAO提供的接口，由于篇幅原因，仅列出MainView即首页。**

/**
    * 项目名：student
    * 修改历史：
    */
    package com.student.view;
    
    import java.awt.BorderLayout;
    import java.awt.GridLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.KeyAdapter;
    import java.awt.event.KeyEvent;
    
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTable;
    import javax.swing.JTextField;
    import javax.swing.table.DefaultTableCellRenderer;
    import javax.swing.table.DefaultTableModel;
    import javax.swing.table.TableColumn;
    
    import com.student.AppConstants;
    import com.student.DAO;
    import com.student.base.BaseDAO;
    import com.student.dao.StudentDAO;
    
    /**
    * 模块说明： 首页
    * 
    */
    public class MainView extends JFrame {
    
     private static final long serialVersionUID = 5870864087464173884L;
    
     private final int maxPageNum = 99;
    
     private JPanel jPanelNorth, jPanelSouth, jPanelCenter;
     private JButton jButtonFirst, jButtonLast, jButtonNext, jButtonPre, jButtonAdd, jButtonDelete, jButtonUpdate,
         jButtonFind;
     private JLabel currPageNumJLabel;
     private JTextField condition;
     public static JTable jTable;
     private JScrollPane jScrollPane;
     private DefaultTableModel myTableModel;
    
     public static String[] column = { "id", AppConstants.STUDENT_NAME, AppConstants.STUDENT_SNO,
         AppConstants.STUDENT_SEX, AppConstants.STUDENT_DEPARTMETN, AppConstants.STUDENT_HOMETOWN,
         AppConstants.STUDENT_MARK, AppConstants.STUDENT_EMAIL, AppConstants.STUDENT_TEL };
     public static int currPageNum = 1;
    
     public MainView() {
       init();
     }
    
     private void init() {
       setTitle(AppConstants.MAINVIEW_TITLE);
    
       // north panel
       jPanelNorth = new JPanel();
       jPanelNorth.setLayout(new GridLayout(1, 5));
       condition = new JTextField(AppConstants.PARAM_FIND_CONDITION);
       condition.addKeyListener(new FindListener());
       jPanelNorth.add(condition);
       // query by name
       jButtonFind = new JButton(AppConstants.PARAM_FIND);
       jButtonFind.addActionListener(new ActionListener() {
         @Override
         public void actionPerformed(ActionEvent e) {
           find();
         }
       });
       jButtonFind.addKeyListener(new FindListener());
       // add
       jPanelNorth.add(jButtonFind);
       jButtonAdd = new JButton(AppConstants.PARAM_ADD);
       jButtonAdd.addActionListener(new ActionListener() {
         @Override
         public void actionPerformed(ActionEvent e) {
           new AddView();
         }
       });
       jPanelNorth.add(jButtonAdd);
       // delete
       jButtonDelete = new JButton(AppConstants.PARAM_DELETE);
       jButtonDelete.addActionListener(new ActionListener() {
         @Override
         public void actionPerformed(ActionEvent e) {
           new DeleteView();
         }
       });
       jPanelNorth.add(jButtonDelete);
       // update
       jButtonUpdate = new JButton(AppConstants.PARAM_UPDATE);
       jButtonUpdate.addActionListener(new ActionListener() {
         @Override
         public void actionPerformed(ActionEvent e) {
           new UpdateView();
         }
       });
       jPanelNorth.add(jButtonUpdate);
    
       // center panel
       jPanelCenter = new JPanel();
       jPanelCenter.setLayout(new GridLayout(1, 1));
    
       // init jTable
       String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
       myTableModel = new DefaultTableModel(result, column);
       jTable = new JTable(myTableModel);
       DefaultTableCellRenderer cr = new DefaultTableCellRenderer();
       cr.setHorizontalAlignment(JLabel.CENTER);
       jTable.setDefaultRenderer(Object.class, cr);
       initJTable(jTable, result);
    
       jScrollPane = new JScrollPane(jTable);
       jPanelCenter.add(jScrollPane);
    
       // south panel
       jPanelSouth = new JPanel();
       jPanelSouth.setLayout(new GridLayout(1, 5));
    
       jButtonFirst = new JButton(AppConstants.MAINVIEW_FIRST);
       jButtonFirst.addActionListener(new ActionListener() {
         @Override
         public void actionPerformed(ActionEvent e) {
           currPageNum = 1;
           String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
           initJTable(jTable, result);
           currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum
               + AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);
         }
       });
       jButtonPre = new JButton(AppConstants.MAINVIEW_PRE);
       jButtonPre.addActionListener(new ActionListener() {
    
         @Override
         public void actionPerformed(ActionEvent e) {
           currPageNum--;
           if (currPageNum <= 0) {
             currPageNum = 1;
           }
           String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
           initJTable(jTable, result);
           currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum
               + AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);
         }
       });
       jButtonNext = new JButton(AppConstants.MAINVIEW_NEXT);
       jButtonNext.addActionListener(new ActionListener() {
         @Override
         public void actionPerformed(ActionEvent e) {
           currPageNum++;
           if (currPageNum > maxPageNum) {
             currPageNum = maxPageNum;
           }
           String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
           initJTable(jTable, result);
           currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum
               + AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);
         }
       });
       jButtonLast = new JButton(AppConstants.MAINVIEW_LAST);
       jButtonLast.addActionListener(new ActionListener() {
         @Override
         public void actionPerformed(ActionEvent e) {
           currPageNum = maxPageNum;
           String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).list(currPageNum);
           initJTable(jTable, result);
           currPageNumJLabel.setText(AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum
               + AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);
         }
       });
    
       currPageNumJLabel = new JLabel(
           AppConstants.MAINVIEW_PAGENUM_JLABEL_DI + currPageNum + AppConstants.MAINVIEW_PAGENUM_JLABEL_YE);
       currPageNumJLabel.setHorizontalAlignment(JLabel.CENTER);
    
       jPanelSouth.add(jButtonFirst);
       jPanelSouth.add(jButtonPre);
       jPanelSouth.add(currPageNumJLabel);
       jPanelSouth.add(jButtonNext);
       jPanelSouth.add(jButtonLast);
    
       this.add(jPanelNorth, BorderLayout.NORTH);
       this.add(jPanelCenter, BorderLayout.CENTER);
       this.add(jPanelSouth, BorderLayout.SOUTH);
    
       setBounds(400, 200, 750, 340);
       setResizable(false);
       setDefaultCloseOperation(DISPOSE_ON_CLOSE);
       setVisible(true);
     }
    
     public static void initJTable(JTable jTable, String[][] result) {
       ((DefaultTableModel) jTable.getModel()).setDataVector(result, column);
       jTable.setRowHeight(20);
       TableColumn firsetColumn = jTable.getColumnModel().getColumn(0);
       firsetColumn.setPreferredWidth(30);
       firsetColumn.setMaxWidth(30);
       firsetColumn.setMinWidth(30);
       TableColumn secondColumn = jTable.getColumnModel().getColumn(1);
       secondColumn.setPreferredWidth(60);
       secondColumn.setMaxWidth(60);
       secondColumn.setMinWidth(60);
       TableColumn thirdColumn = jTable.getColumnModel().getColumn(2);
       thirdColumn.setPreferredWidth(90);
       thirdColumn.setMaxWidth(90);
       thirdColumn.setMinWidth(90);
       TableColumn fourthColumn = jTable.getColumnModel().getColumn(3);
       fourthColumn.setPreferredWidth(30);
       fourthColumn.setMaxWidth(30);
       fourthColumn.setMinWidth(30);
       TableColumn seventhColumn = jTable.getColumnModel().getColumn(6);
       seventhColumn.setPreferredWidth(30);
       seventhColumn.setMaxWidth(30);
       seventhColumn.setMinWidth(30);
       TableColumn ninthColumn = jTable.getColumnModel().getColumn(8);
       ninthColumn.setPreferredWidth(90);
       ninthColumn.setMaxWidth(90);
       ninthColumn.setMinWidth(90);
     }
    
     private class FindListener extends KeyAdapter {
    
       @Override
       public void keyPressed(KeyEvent e) {
         if (e.getKeyCode() == KeyEvent.VK_ENTER) {
           find();
         }
       }
     }
    
     private void find() {
       currPageNum = 0;
       String param = condition.getText();
       if ("".equals(param) || param == null) {
         initJTable(MainView.jTable, null);
         currPageNumJLabel.setText(AppConstants.MAINVIEW_FIND_JLABEL);
         return;
       }
       String[][] result = ((StudentDAO) BaseDAO.getAbilityDAO(DAO.StudentDAO)).queryByName(param);
       condition.setText("");
       initJTable(MainView.jTable, result);
       currPageNumJLabel.setText(AppConstants.MAINVIEW_FIND_JLABEL);
     }
    
    }

***扩展阅读***

[如何快速开发中小型系统][Link 1]

[做一个完整的Java Web项目需要掌握的技能][Java Web]

[Java POI 导出EXCEL经典实现 Java导出Excel弹出下载框][Java POI _EXCEL_ Java_Excel]

[一篇文章了解RPC框架原理][RPC]

[一个“Hello World”理解JVM运行时数据区][Hello World_JVM]

[图解：Java 中的数据结构及原理][Java]

[一题带你彻底理解 sleep() 和 wait()][sleep_ _ wait]

[我是如何理解Java抽象类和接口的？][Java 1]

![70][]

[1240]: /images/20220516/1353d9716c734e92898a8f8901445616.png
[Link 1]: http://mp.weixin.qq.com/s?__biz=MzU5NTAzNjM0Mw==&mid=2247485172&idx=1&sn=bcdd6693310b7bb19365e430c69e62dc&chksm=fe79572cc90ede3ab1178b60c211b6ad4708bbc5f00a337c62fd4ff068a74aa31e37b651ef11&scene=21#wechat_redirect
[Java Web]: http://mp.weixin.qq.com/s?__biz=MzU5NTAzNjM0Mw==&mid=2247484766&idx=3&sn=a4d14aed7ee94ce182ad92ada240837b&chksm=fe795486c90edd9053d85f8db6308f6326128aa0cc72eb3a8a3fd66617724627d3d9ee17bf5e&scene=21#wechat_redirect
[Java POI _EXCEL_ Java_Excel]: http://mp.weixin.qq.com/s?__biz=MzU5NTAzNjM0Mw==&mid=2247485123&idx=1&sn=bad5b77e2e9cf96ab68f30c00d0ea93a&chksm=fe79571bc90ede0d21c653da5ca1a190d288380e850c5536306017aeed003c9e2bd4b5263a97&scene=21#wechat_redirect
[RPC]: http://mp.weixin.qq.com/s?__biz=MzU5NTAzNjM0Mw==&mid=2247486126&idx=1&sn=f31d5b1037ac48a693e734a4d7734e25&chksm=fe795b76c90ed260555956801011da591de5b2f493e8510fa66c8adda45268ae6f327b9efdde&scene=21#wechat_redirect
[Hello World_JVM]: http://mp.weixin.qq.com/s?__biz=MzU5NTAzNjM0Mw==&mid=2247486126&idx=2&sn=e811e3770042e22ef85f688b89e7b555&chksm=fe795b76c90ed260d2ed5a8429cfdf782ddd4db144b59162f1c51e84ee3833d63fe14e0921ef&scene=21#wechat_redirect
[Java]: http://mp.weixin.qq.com/s?__biz=MzU5NTAzNjM0Mw==&mid=2247486068&idx=2&sn=38549b0917246312fe928249aac1d006&chksm=fe795bacc90ed2ba1d567ba5b0f630d3071d3a5a5fd22135fd349496f623993fee6a337c547e&scene=21#wechat_redirect
[sleep_ _ wait]: http://mp.weixin.qq.com/s?__biz=MzU5NTAzNjM0Mw==&mid=2247486040&idx=2&sn=ca3aef22a65e51a320d0cb3c6f884450&chksm=fe795b80c90ed2965b4125497ca0c7016695abf91d5ce85b078fe36485d56210fed4bb4cc249&scene=21#wechat_redirect
[Java 1]: http://mp.weixin.qq.com/s?__biz=MzU5NTAzNjM0Mw==&mid=2247484691&idx=4&sn=d513c48a2fd195f31054aed38fd2b6e0&chksm=fe7954cbc90edddd047db8b8b219badf4fd592edc3944d4430ce11ae64be7733be74c97c4e66&scene=21#wechat_redirect
[70]: /images/20220516/494e2f0832424993924b8dd46d55924c.png