java - "Error calling Driver#connect"使用 hibernate

Question

这是我的 cfg.xml 文件:

    <!-- Database connection settings -->
    <property name="connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property>
    <property name="connection.url">jdbc:sqlserver://localhost:1433;DatabaseName=hiber;</property>
    <property name="connection.username">Costi-PC\Costi</property>
    <property name="connection.password"></property>

    <!-- JDBC connection pool (use the built-in) -->
    <property name="connection.pool_size">1</property>

    <!-- SQL dialect -->
    <property name="dialect">org.hibernate.dialect.SQLServerDialect</property>

    <!-- Disable the second-level cache -->
    <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

    <!-- Echo all executed SQL to stdout -->
    <property name="show_sql">true</property>

    <!-- Drop and re-create the database schema on startup -->
    <property name="hbm2ddl.auto">create</property>

    <!-- Names the annotated entity class -->
    <mapping class="model.User" />

用户类和主类:

@Entity
    public class User {

        @Id
        private int userId;
        private String userName;

        public int getUserId() {..}
        public void setUserId(int userId) {..}
        public String getUserName() {..}
        public void setUserName(String userName) {..}

    }

    public class Main {

        public static void main(String[] args) {
           User user = new User();
           user.setUserId(1);
           user.setUserName("Costi");

           AnnotationConfiguration configuration = new AnnotationConfiguration();
           configuration.configure();

           SessionFactory sessionFactory = configuration.buildSessionFactory();

           Session session = sessionFactory.openSession();
           session.beginTransaction();
           session.save(user);
           session.getTransaction().commit();
           session.close();

           sessionFactory.close();

}

当我运行这个程序时，我得到这个错误:

Exception in thread "main" org.hibernate.exception.JDBCConnectionException: Error calling Driver#connect
    at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:132)
    at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator$1$1.convert(BasicConnectionCreator.java:118)
    at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.convertSqlException(BasicConnectionCreator.java:140)
    at org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection(DriverConnectionCreator.java:58)
    at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.createConnection(BasicConnectionCreator.java:75)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:106)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:89)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:206)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:178)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.buildJdbcConnectionAccess(JdbcServicesImpl.java:260)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:94)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:89)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:206)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:178)
    at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1885)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1843)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1928)
    at main.Main.main(Main.java:23)
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host localhost, port 1433 has failed. Error: "Connection refused: connect. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.".
    at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:190)
    at com.microsoft.sqlserver.jdbc.SQLServerException.ConvertConnectExceptionToSQLServerException(SQLServerException.java:241)
    at com.microsoft.sqlserver.jdbc.SocketFinder.findSocket(IOBuffer.java:2243)
    at com.microsoft.sqlserver.jdbc.TDSChannel.open(IOBuffer.java:491)
    at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1309)
    at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:991)
    at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:827)
    at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1012)
    at org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection(DriverConnectionCreator.java:55)
    ... 14 more

我使用的是 sql server 2008。 我尝试了不同类型的 cfg 配置，但似乎都不起作用。 我相信问题出在 connection.url 上。我试图更改端口 (1433) 但没有。 谁能告诉我问题出在哪里？

Answer 1

我遇到了同样的问题，只是我更改了 mysql 服务器连接器上的版本，但工作正常

    <!-- commented as it was not make to connect 
       <dependency> 
          <groupId>mysql</groupId> 
          <artifactId>mysql-connector-java</artifactId> 
          <version>5.1.34</version> 
       </dependency> 
   -->

添加了最新版本的mysql连接器

   <!-- added latest version of mysql connector -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>8.0.18</version>
            </dependency>