LoggerFactory 异常

Question

在我的Java应用程序中，我需要使用连接池，所以我决定实现HibernateCP。问题是我得到这个异常，我需要添加以下内容：org/slf4j/LoggerFactory。完整的例外是：

INFO: HHH000490: Using JTA platform [org.hibernate.engine.transaction.jta.platform.internal.JBossStandAloneJtaPlatform]
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at com.zaxxer.hikari.HikariConfig.<clinit>(HikariConfig.java:48)
    at Database_Managment.DatabaseConfig.<clinit>(DatabaseConfig.java:16)
    at Database_Managment.DBFunctionality.checkUser(DBFunctionality.java:45)
    at DTOS.LogInView$4.mouseClicked(LogInView.java:221)
    at java.desktop/java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:278)
    at java.desktop/java.awt.Component.processMouseEvent(Component.java:6629)
    at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3389)
    at java.desktop/java.awt.Component.processEvent(Component.java:6391)
    at java.desktop/java.awt.Container.processEvent(Container.java:2266)
    at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5001)
    at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
    at java.desktop/java.awt.Component.dispatchEvent(Component.java:4833)
    at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4948)
    at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4584)
    at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4516)
    at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2310)
    at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2780)
    at java.desktop/java.awt.Component.dispatchEvent(Component.java:4833)
    at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:773)
    at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:722)
    at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:716)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
    at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
    at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:97)
    at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:746)
    at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:744)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
    at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
    at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:743)
    at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
    ... 35 more

我尝试了很多方法和不同的规范等等，但我还没有了解Maven或依赖项，所以我有基础知识，我可能错过了一些东西。

我正在从 IntelliJ IDEA 运行该项目。我不知道该项目是否也从命令行收到错误。该错误发生在 LogIn 界面中，并且在仅使用 main 方法运行导致错误的地方时也会发生。

相关课程：

数据库配置：

package Database_Managment;

import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;

import javax.sql.DataSource;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;

public class DatabaseConfig {

    private static HikariDataSource dataSource;

    static {
        HikariConfig config = new HikariConfig();
        config.setJdbcUrl("jdbc:mysql://localhost:3306/storefront");

        try {
            Properties accessProperties = new Properties();
            accessProperties.load(new FileInputStream("C:\\Users\\andre\\IdeaProjects\\demo\\Project-Poster\\src\\user.properties"));
            //prop. to access the host
            config.setUsername(accessProperties.getProperty("username"));
            config.setPassword(accessProperties.getProperty("password"));

        } catch (IOException e) {
            throw new RuntimeException(e);
        }


        config.setMaximumPoolSize(1); // Adjust the pool size based on your needs
        config.setIdleTimeout(60000);  // Connection idle time
        config.setConnectionTimeout(30000); // Connection timeout

        dataSource = new HikariDataSource(config);
    }

    public static DataSource getConnectionPool() {
        return dataSource;
    }
}

数据库功能：

package Database_Managment;

import Client.Person;
import Server.ServerView;
import com.mysql.cj.jdbc.MysqlDataSource;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;

public final class DBFunctionality {

     static String checkUserQuery = "SELECT username FROM storefront.users WHERE username = ? AND password = ?";

    public static void manageClientData(String username, String password, String iconId, String status, String profileLink, boolean isNew, Person person) {

        if (isNew) {
            var ds = new MysqlDataSource();
            ds.setServerName("localhost");
            ds.setPort(3306);
            ds.setUser("And_GG");
            ds.setPassword("Sample Password"); //Can't show the real password

            try (Connection conn = ds.getConnection(); Statement st = conn.createStatement()) {

                String[] joinedValues = {username, password, profileLink, iconId, status};
                String insertQuery = "INSERT INTO storefront.users (username, password, link, img, status) VALUES (?, ?, ?, ?, ?)";
                PreparedStatement ps = conn.prepareStatement(insertQuery);

                for (int i = 1; i <= joinedValues.length; i++) {
                    ps.setString(i, joinedValues[i - 1]);
                }
                ps.executeUpdate();

            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        new ServerView(person.getTimeJoined(), person);
    }

    public static boolean checkUser(String username, String password) {

        try (Connection conn = DatabaseConfig.getConnectionPool().getConnection();
             PreparedStatement ps = conn.prepareStatement(checkUserQuery)) {

            ps.setString(1, username);
            ps.setString(2, password);
            var rs = ps.getResultSet();

            if (rs.isBeforeFirst()) return false;

        } catch (SQLException e) {
            //Not handle
        }

        return true;
    }
}

LogInView（仅相关部分）：

//Instances that will constantly be re-used by the method under them
EntityManager entityManager = DatabaseEM.getEm();
EntityTransaction transaction = entityManager.getTransaction();

//if the user doesn't exist, we do nothing, else, we get it from the db. and init. the ServerView
confirmButton.addMouseListener(new MouseAdapter() {
    @Override
    public void mouseClicked(MouseEvent e) {
        if (!DBFunctionality.checkUser(nameBar.getText(), linkLabel2.getText())) return;

        String jpql = "SELECT user FROM User user WHERE user.username = ?1 AND user.password = ?2";

        try {
            transaction.begin();

            var query = entityManager.createQuery(jpql, User.class);
            query.setParameter(1, nameBar.getText());
            query.setParameter(2, linkLabel2.getText());

            var user = query.getSingleResult();
            if (user != null) {

                new ServerView(LocalTime.now(), new Person(user.getUsername(), user.getPassword(), user.getImg(), user.getStatus(), user.getLink(), false, false));
            }

            transaction.commit();

        } catch (Exception ex) {
            //not handle
        }
    }
});

这是我的 Maven pom.xml 文件：

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.example</groupId>
    <artifactId>my-app</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.4.21.Final</version>
        </dependency>
        <dependency>
            <groupId>com.zaxxer</groupId>
            <artifactId>HikariCP</artifactId>
            <version>3.4.5</version>
        </dependency>
        <dependency>
            <groupId>javax.transaction</groupId>
            <artifactId>javax.transaction-api</artifactId>
            <version>1.3</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.32</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.32</version>
        </dependency>


    </dependencies>

</project>

Answer 1

这似乎是IntellijIDEA本身的问题。由于某种原因，您的 slf4j 未添加到类路径中。

尝试按以下两个按钮：

如果没有帮助，请点击左上角的[文件 -> 使缓存... -> 重新启动]