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Commit 623e059

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Khoá học Java Swing và JDBC T11/05_java_jdbc/TestJDBC/src/models/ConnectSQL.java
1 parent b11c7e3 commit 623e059

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6 files changed

+94
-11
lines changed

6 files changed

+94
-11
lines changed

‎Khoá học Java Swing và JDBC T11/05_java_jdbc/TestJDBC/.classpath‎

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@@ -6,5 +6,6 @@
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</attributes>
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</classpathentry>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="lib" path="lib/mysql-connector-java-8.0.28.jar"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>
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‎Khoá học Java Swing và JDBC T11/05_java_jdbc/TestJDBC/src/models/ConnectSQL.java‎

Lines changed: 13 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,15 +1,25 @@
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package models;
22

33
import java.sql.Connection;
4+
import java.sql.DriverManager;
45

56
public final class ConnectSQL {
67
private Connection conn = null;
78
private static ConnectSQL instance = null;
89

910
private ConnectSQL() {
10-
// kết nối
11-
System.out.println("Kết nối sql");
12-
//this.conn = ///
11+
try{
12+
String userName = "root";
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String password = "";
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String DatabaseName = "studentmanager";
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String url = "jdbc:mysql://localhost/" + DatabaseName;
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Class.forName("com.mysql.cj.jdbc.Driver");
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this.conn = DriverManager.getConnection(url, userName, password);
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System.out.println("Đã kết nối tới SQL");
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} catch (Exception e) {
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// TODO: handle exception
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System.out.println(e.getMessage());
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}
1323
}
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public static ConnectSQL getInstance() {

‎Khoá học Java Swing và JDBC T11/05_java_jdbc/TestJDBC/src/models/Student.java‎

Lines changed: 13 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -1,31 +1,32 @@
11
package models;
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public class Student {
4+
private int id;
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public String masv;
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private String name;
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private int age;
78
private String gender;
89

9-
public static String university = "VKU";
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1111
public Student() {
12+
this.id = 0;
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this.masv = "";
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this.name = "";
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this.age = 0;
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this.gender = "Nam";
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}
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18-
public Student(String masv, String name, int age, String gender) {
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public Student(int id, String masv, String name, int age, String gender) {
20+
this.id = id;
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this.masv = masv;
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this.name = name;
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this.age = age;
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this.gender = gender;
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}
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25-
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@Override
2728
public String toString() {
28-
return "Student [masv=" + masv + ", name=" + name + ", age=" + age + ", gender=" + gender + ", university=" + university + "]";
29+
return "Student [id=" + id + ", masv=" + masv + ", name=" + name + ", age=" + age + ", gender=" + gender + "]";
2930
}
3031

3132
public String getMasv() {
@@ -59,4 +60,12 @@ public String getGender() {
5960
public void setGender(String gender) {
6061
this.gender = gender;
6162
}
63+
64+
public int getId() {
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return id;
66+
}
67+
68+
public void setId(int id) {
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this.id = id;
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}
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}
Lines changed: 59 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,59 @@
1+
package models;
2+
3+
import java.sql.Connection;
4+
import java.sql.PreparedStatement;
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import java.sql.ResultSet;
6+
import java.sql.SQLException;
7+
import java.util.ArrayList;
8+
9+
public class StudentManager {
10+
public static ArrayList<Student> getAll() {
11+
ArrayList<Student> students = new ArrayList<>();
12+
try {
13+
Connection conn = ConnectSQL.getConnected();
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String query = "SELECT * FROM students";
15+
PreparedStatement ptsm = conn.prepareStatement(query);
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ResultSet rs = ptsm.executeQuery();
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18+
while(rs.next()) {
19+
int id = rs.getInt("id");
20+
String masv = rs.getString("masv");
21+
String name = rs.getString("name");
22+
int age = rs.getInt("age");
23+
String gender = rs.getString("gender");
24+
25+
Student student = new Student(id, masv, name, age, gender);
26+
students.add(student);
27+
}
28+
29+
} catch (SQLException e) {
30+
System.out.println(e.getMessage());
31+
}
32+
33+
return students;
34+
}
35+
36+
public static void create(Student s) {
37+
38+
try {
39+
Connection conn = ConnectSQL.getConnected();
40+
String query = "INSERT INTO students (id, masv, name, age, gender) VALUES (NULL, ?, ?, ?, ?)";
41+
PreparedStatement ptsm = conn.prepareStatement(query);
42+
ptsm.setString(1, s.getMasv());
43+
ptsm.setString(2, s.getName());
44+
ptsm.setInt(3, s.getAge());
45+
ptsm.setString(4, s.getGender());
46+
47+
int row = ptsm.executeUpdate();
48+
if (row > 0) {
49+
System.out.println("Thêm thành công " + s);
50+
} else {
51+
System.out.println("Thêm lỗi");
52+
}
53+
54+
55+
} catch (SQLException e) {
56+
System.out.println(e.getMessage());
57+
}
58+
}
59+
}
Lines changed: 8 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -1,16 +1,20 @@
11
package test;
22

3-
import models.ConnectSQL;
3+
import java.util.ArrayList;
44
import models.Student;
5+
import models.StudentManager;
56

67
public class Test {
78

89
public static void main(String[] args) {
910
// TODO Auto-generated method stub
11+
12+
Student s = new Student(0, "24IT395", "Nguyễn Quang Vũ", 38, "Nam");
13+
StudentManager.create(s);
1014

11-
ConnectSQLconn = ConnectSQL.getInstance();
12-
ConnectSQLconn2 = ConnectSQL.getInstance();
13-
ConnectSQLconn3 = ConnectSQL.getInstance();
15+
ArrayList<Student> students = StudentManager.getAll();
16+
for (inti = 0; i < students.size();i++)
17+
System.out.println(students.get(i));
1418
}
1519

1620
}

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