fix: homework7 dao issue

homework7/src/main/java/com/msksbr/homework7/dao/UsersDao.java

@@ -2,7 +2,11 @@
  * @name: UsersDao.java
  * @author: msksbr
  * @date: 2025-05-26
- * @version: 1.0
+ * @version: 1.11f: fix id absence issue
+ *           1.1f: fix table name issue
+ *           1.1: fix date format issue
+ *           1.0f: fix update method issue
+ *           1.0
  * @description: UsersDao class for homework 7
  */
 package com.msksbr.homework7.dao;
@@ -11,30 +15,35 @@ import com.msksbr.homework7.domain.User;
 import com.msksbr.homework7.util.JDBCUtils;
 
 import java.sql.ResultSet;
+import java.text.SimpleDateFormat;
 
 public class UsersDao {
     private final JDBCUtils jdbcUtils = new JDBCUtils();
+    private final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
     private User user = new User();
 
     public void addUser(User user) {
         this.user = user;
-        String sql = "INSERT INTO users (username, password, email, birthday) VALUES ('" + user.getUsername() + "', '" + user.getPassword() + "', '" + user.getEmail() + "', '" + user.getBirthday() + "')";
-        jdbcUtils.runQuery(sql);
+        String sql = "INSERT INTO User (id, username, password, email, birthday) " +
+                "VALUES (" + user.getId() + ", '" + user.getUsername() + "', '" +
+                user.getPassword() + "', '" + user.getEmail() + "', '" +
+                sdf.format(user.getBirthday()) + "')";
+        jdbcUtils.runUpdate(sql);
     }
 
     public void deleteUser(int id) {
-        String sql = "DELETE FROM users WHERE id = " + id;
-        jdbcUtils.runQuery(sql);
+        String sql = "DELETE FROM User WHERE id = " + id;
+        jdbcUtils.runUpdate(sql);
     }
 
     public void updateUser(User user) {
         this.user = user;
-        String sql = "UPDATE users SET username = '" + user.getUsername() + "', password = '" + user.getPassword() + "', email = '" + user.getEmail() + "', birthday = '" + user.getBirthday() + "' WHERE id = " + user.getId();
-        jdbcUtils.runQuery(sql);
+        String sql = "UPDATE User SET username = '" + user.getUsername() + "', password = '" + user.getPassword() + "', email = '" + user.getEmail() + "', birthday = '" + sdf.format(user.getBirthday()) + "' WHERE id = " + user.getId();
+        jdbcUtils.runUpdate(sql);
     }
 
     public User findUserById(int id) {
-        String sql = "SELECT * FROM users WHERE id = " + id;
+        String sql = "SELECT * FROM User WHERE id = " + id;
         ResultSet rs = jdbcUtils.runQuery(sql);
         try {
             if (rs.next()) {

homework7/src/main/java/com/msksbr/homework7/util/JDBCUtils.java

@@ -2,7 +2,9 @@
  * @name: JDBCUtils.java
  * @author: msksbr
  * @date: 2025-05-26
- * @version: 1.0f: fix yaml file load issue
+ * @version: 1.1: add a update method
+ *           1.0f: fix yaml file load issue
+ *           1.0
  * @description: JDBCUtils class for homework 7
  */
 package com.msksbr.homework7.util;
@@ -39,6 +41,14 @@ public class JDBCUtils {
         }
     }
 
+    public void runUpdate(String sql) {
+        try {
+            this.statement.executeUpdate(sql);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
     static class DBInfo {
         String address;
         String port;

homework7/src/test/java/dao/Add.java

@@ -0,0 +1,17 @@
+package dao;
+
+import com.msksbr.homework7.dao.UsersDao;
+import com.msksbr.homework7.domain.User;
+
+public class Add {
+    public static void main(String[] args) {
+        User user = new User();
+        user.setId(9999);
+        user.setUsername("test");
+        user.setPassword("test");
+        user.setEmail("test@example.com");
+        user.setBirthday(new java.util.Date());
+        UsersDao usersDao = new UsersDao();
+        usersDao.addUser(user);
+    }
+}

homework7/src/test/java/dao/Delete.java

@@ -0,0 +1,10 @@
+package dao;
+
+import com.msksbr.homework7.dao.UsersDao;
+
+public class Delete {
+    public static void main(String[] args) {
+        UsersDao usersDao = new UsersDao();
+        usersDao.deleteUser(9999);
+    }
+}

homework7/src/test/java/dao/Query.java

@@ -0,0 +1,21 @@
+package dao;
+
+import com.msksbr.homework7.dao.UsersDao;
+import com.msksbr.homework7.domain.User;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class Query {
+    public static void main(String[] args) {
+        UsersDao usersDao = new UsersDao();
+        User user = usersDao.findUserById(9999);
+        Map<String, Object> map = new HashMap<String, Object>();
+        map.put("id", user.getId());
+        map.put("username", user.getUsername());
+        map.put("password", user.getPassword());
+        map.put("email", user.getEmail());
+        map.put("birthday", user.getBirthday());
+        System.out.println(map);
+    }
+}

homework7/src/test/java/dao/Update.java

@@ -0,0 +1,17 @@
+package dao;
+
+import com.msksbr.homework7.dao.UsersDao;
+import com.msksbr.homework7.domain.User;
+
+public class Update {
+    public static void main(String[] args) {
+        UsersDao userDao = new UsersDao();
+        User user = new User();
+        user.setId(9999);
+        user.setUsername("test1");
+        user.setPassword("test1");
+        user.setEmail("modified@example.com");
+        user.setBirthday(new java.util.Date());
+        userDao.updateUser(user);
+    }
+}