亚洲国产日韩欧美一区二区三区,精品亚洲国产成人av在线,国产99视频精品免视看7,99国产精品久久久久久久成人热,欧美日韩亚洲国产综合乱

? ??? ??? MySQL ???? JavaFX ??????? MySQL ??????? ???? TableView? ???? ???? ??? ??????

JavaFX ??????? MySQL ??????? ???? TableView? ???? ???? ??? ??????

Nov 25, 2024 am 05:29 AM

How to Connect a JavaFX Application to a MySQL Database and Display Data in a TableView?

JavaFX MySQL ?????? ??

JavaFX ??????? MySQL ??????? ????? ?? ? ??? ??? ???? ?? ???? ?????. ??? ??? ????.

PersonDataAccessor:

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.ResultSet;

import java.util.List;
import java.util.ArrayList;

public class PersonDataAccessor {

    private Connection connection;

    // Constructor
    public PersonDataAccessor(String driverClassName, String dbURL, String user, String password) throws SQLException, ClassNotFoundException {
        Class.forName(driverClassName);
        connection = DriverManager.getConnection(dbURL, user, password);
    }

    // Close connection
    public void shutdown() throws SQLException {
        if (connection != null) {
            connection.close();
        }
    }

    // Get person list
    public List<Person> getPersonList() throws SQLException {
        try (
            Statement stmnt = connection.createStatement();
            ResultSet rs = stmnt.executeQuery("select * from person");
        ) {
            List<Person> personList = new ArrayList<>();
            while (rs.next()) {
                String firstName = rs.getString("first_name");
                String lastName = rs.getString("last_name");
                String email = rs.getString("email_address");
                Person person = new Person(firstName, lastName, email);
                personList.add(person);
            }
            return personList;
        }
    }

}

? ???? ?? ??, ?? ?? ? ??? ??? ?????. getPersonList() ???? ??????? "person" ???? ???? ??? ???? Person ?? ???? ?????.

Person ??(??? ??):

import javafx.beans.property.StringProperty;
import javafx.beans.property.SimpleStringProperty;

public class Person {

    private StringProperty firstName = new SimpleStringProperty(this, "firstName");
    public StringProperty firstNameProperty() {
        return firstName;
    }
    public String getFirstName() {
        return firstNameProperty().get();
    }
    public void setFirstName(String firstName) {
        firstNameProperty().set(firstName);
    }

    private StringProperty lastName = new SimpleStringProperty(this, "lastName");
    public StringProperty lastNameProperty() {
        return lastName;
    }
    public String getLastName() {
        return lastNameProperty().get();
    }
    public void setLastName(String lastName) {
        lastNameProperty().set(lastName);
    }

    private StringProperty email = new SimpleStringProperty(this, "email");
    public StringProperty emailProperty() {
        return email;
    }
    public String getEmail() {
        return emailProperty().get();
    }
    public void setEmail(String email) {
        emailProperty().set(email);
    }

    public Person() {}

    public Person(String firstName, String lastName, String email) {
        setFirstName(firstName);
        setLastName(lastName);
        setEmail(email);
    }

}

? ???? firstName, lastName ? ??? ??? Person ??? ?????. email.

UI ???(???? ??? ??):

import javafx.application.Application;
import javafx.scene.control.TableView;
import javafx.scene.control.TableColumn;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.BorderPane;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class PersonTableApp extends Application {

    private PersonDataAccessor dataAccessor;

    @Override
    public void start(Stage primaryStage) throws Exception {
        dataAccessor = new PersonDataAccessor(...); // Provide DB connection details

        TableView<Person> personTable = new TableView<>();
        TableColumn<Person, String> firstNameCol = new TableColumn<>("First Name");
        firstNameCol.setCellValueFactory(new PropertyValueFactory<>("firstName"));
        TableColumn<Person, String> lastNameCol = new TableColumn<>("Last Name");
        lastNameCol.setCellValueFactory(new PropertyValueFactory<>("lastName"));
        TableColumn<Person, String> emailCol = new TableColumn<>("Email");
        emailCol.setCellValueFactory(new PropertyValueFactory<>("email"));

        personTable.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
        personTable.getItems().addAll(dataAccessor.getPersonList());

        BorderPane root = new BorderPane();
        root.setCenter(personTable);
        Scene scene = new Scene(root, 600, 400);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    @Override
    public void stop() throws Exception {
        if (dataAccessor != null) {
            dataAccessor.shutdown();
        }
    }

    public static void main(String[] args) {
        launch(args);
    }
}

? ???? UI? ????? TableView? Person ??? ?????.

? ??? ???? MySQL ??????? ????? ????, ???? ????, ?? ????? ??? ???? ???? JavaFX ??????? ??? ? ????. ???.

? ??? JavaFX ??????? MySQL ??????? ???? TableView? ???? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

? ????? ??
? ?? ??? ????? ???? ??? ??????, ???? ?????? ????. ? ???? ?? ???? ?? ??? ?? ????. ???? ??? ???? ???? ??? ?? admin@php.cn?? ?????.

? AI ??

Undresser.AI Undress

Undresser.AI Undress

???? ?? ??? ??? ?? AI ?? ?

AI Clothes Remover

AI Clothes Remover

???? ?? ???? ??? AI ?????.

Video Face Swap

Video Face Swap

??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!

???

??? ??

???++7.3.1

???++7.3.1

???? ?? ?? ?? ???

SublimeText3 ??? ??

SublimeText3 ??? ??

??? ??, ???? ?? ????.

???? 13.0.1 ???

???? 13.0.1 ???

??? PHP ?? ?? ??

???? CS6

???? CS6

??? ? ?? ??

SublimeText3 Mac ??

SublimeText3 Mac ??

? ??? ?? ?? ?????(SublimeText3)

???

??? ??

??? ????
1597
29
PHP ????
1488
72
???
MySQL ? ? ???? NULL ?? ????? MySQL ? ? ???? NULL ?? ????? Jul 05, 2025 am 02:46 AM

MySQL?? NULL ?? ?? ? ? 1. ???? ?? ? ? ? ??? NotNull? ???? ?? ??? NULL? ?????. 2. iSnull ?? ISNOTNULL = ??! =; 3. Ifnull ?? Coalesce ??? ????? ???? ???? ? ??? ? ????. 4. ?? ?? ????? NULL ?? ?? ??? ?? ???? ??? ?? ? ORM ??? ?? ?? ?????? ??????. NULL? ???? ?? ?? ???? ??? ???? ?? ?? ?? ????. ??? ???? ??, ?? ? ???? ?? ? ??? ?? ??? ??? ?? ???????. ??? ??? ???? ??? ?? ?? ??? ????? ?? ? ????.

MySQL?? mysqldump? ???? ?? ??? ????? MySQL?? mysqldump? ???? ?? ??? ????? Jul 06, 2025 am 02:55 AM

MySQLDump? MySQL ??????? ??? ??? ???? ???? ?????. ??????? ???? ?? ?? ? ?? ?? ???? SQL ??? ?????. 1. ?? ??? ????? ??? ?????? ??? ???? ??? SQL ???? ?????. 2. ??? ?????? ?? ??? ??? ???? TB ?? ???? ?? ???? ???? ????. 3. ???? ???-single transaction,-databases,-all-databases,-routines ?; 4. MySQL ??? ???? ?? ?? ?? ?? ?? ? ??? ?? ??? ???? ? ????. 5. ??? ????? ????? ?? ? ?? ??? ???? ?? ????.

MySQL?? ?????? ? ??? ?? ?? MySQL?? ?????? ? ??? ?? ?? Jul 06, 2025 am 02:41 AM

MySQL ?????? ? ???? ??? ??? information_schema? ?? ????? ?? ? ??? ??? ? ????. 1. ?? ?????? ?? ?? : SQL ?? ???? selecttable_schemaas'database ', sum (data_length index_length)/1024/1024as'size (mb) 'frominformation_schema.tablessgroupbytable_schema; ?? ??????? ? ??? ??? ?? ??????? ???? ??? ?? ? ? ????. 2. ?? ??? ??? ?????? : selectta? ??????

MySQL?? ??? ?? ? ???? ??? ????? MySQL?? ??? ?? ? ???? ??? ????? Jul 08, 2025 am 02:51 AM

?? ?? ? ?? ?? ??? ??? ??? ?????? ?? ??? ??? ?????? ??? ?????? ?????? ??? ?????. ? ?? ?? ???? ????. ??, ??????, ??? ? ??? ?? ??? UTF8MB4? ???? ???? ShowCreatedAtabase/Table? ???? ? Alter ??? ??????. ??, ?????? ??? ? UTF8MB4 ?? ??? ???? ?? ?? ??? ????? SetNames? ??????. ??, ?? ??? ????? ???? UTF8MB4_UNICODE_CI? ???? ?? ? ????? ???? ???? ?????? ???? ?? ? ? ?? ?? ??? ????? ??????.

MySQL?? ??? ?? ???? ???? ??? ????. MySQL?? ??? ?? ???? ???? ??? ????. Jul 05, 2025 am 02:42 AM

GroupBy? ???? ???? ????? ?? ??? ???? ? ???? ??? ? ??? ????? ? ?????. ?? ??, GroupByCustomer_ID? ???? ? ??? ? ???? ??? ? ????. ???? ? 1,000 ? ??? ? ??? ??? ?? ? ? ????. ?? ? ? ?? ??? GroupBy? ??????, ?? ?? ?? ???? ???? ??? ??? ? ? ????. ???? ???? ? ??? ? ??, ?? ?? ??? ? ?? ???? ???? ?????.

MySQL?? ???? ?? ? ?? ?? ?? MySQL?? ???? ?? ? ?? ?? ?? Jul 08, 2025 am 02:50 AM

MySQL? ???? ??? ???? InnoDB ?? ??? ???? ??? ???? ???? ?????. 1. ????? ??? SQL ?? ????, ?? ?? ?? ?? ??? ?????. 2. ? ???? ???, ???, ?? ? ???? ?????. 3. ????? ???? ????? ??? STARTTRANSACTION, CONMING ? ROLLBACK???. 4. 4 ?? ?? ???? ?? ??, ?? ? ??, ?? ??? ?? ? ???? ?????. 5. ????? ???? ???? ?? ??? ??? ?? ??? ?? ?? ? ??? ????? ??????. ??? ????? ?? MySQL? ?? ???? ?? ??? ?? ? ? ????.

?? ? ?????? ???? MySQL ??????? ????? ?? ? ?????? ???? MySQL ??????? ????? Jul 07, 2025 am 01:50 AM

MySQL ??????? ???? ?? ???? ??? ?? ? ?????? ???? ????. ?? MySQL -U ??? ?? -P? ???? ????? ???? ???? ??? ?????? ??????. ?? ??????? ???? ?? ??? ??? ????? -h ?? ??? ???????. ??, mysql-u username-p database name ?? mysql-u username-p database name? ?? ??? ? ? ?? ??????? ?? ????? ??? ? ? SQL ??? ??? ? ????.

MySQL?? ??? ?? ? ???? ?? MySQL?? ??? ?? ? ???? ?? Jul 07, 2025 am 01:41 AM

MySQL? ?? ?? ? ???? ?? ??? ??? ??, ?? ?? ? ???? ??? ??? ? ?????. ??, ??? ??? UTF8MB4? ?? ?? ??? ?? ??? ?????. ?? ??? UTF8MB4_UNICODE_CI? ?? ?? ?? ??? ???? UTF8MB4_BIN? ?? ?????. ??, ?? ??? ?? ??? ??, ??????, ??? ? ??? ??? ? ????. ??? ??? ?? UTF8MB4 ? UTF8MB4_UNICODE_CI? ?? ? ???? ???? ?? ????. ??, ?? ??? ?? ??? ?? ???? ?? ??, ?? ?? ???? ??? ??? ?? ???? ???? ??? ???? ???? ???????. ?? ?? ??? ???? ?? ???? ? ??? ? ?? ??? ???????.

See all articles