“应用程序必须提供 JDBC 连接”同时进行 simplehibernate

Question

我正在运行简单的 hibernate 程序，但它在我的 hibernate.cfg.xml 标题中给出了错误提示，如下所示：-

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
    
    <hibernate-configuration>
    <session-factory>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/myhiber</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">rishabh123#</property>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
    <property name="hibernate.hbm2ddl.auto">update</property>
    <property name="hibernate.show_sql">true</property>
    <mapping class="com.tut.ProjectwithMaven.Student"/>
    </session-factory>
    
    </hibernate-configuration>

我的代码如下： -

public class App 
{
    public static void main( String[] args )throws Exception
    {
        System.out.println( "Hello World!" );
       // Configuration cfg=new Configuration();
       
            try {
                new Configuration().configure("hibernate.cfg.xml");
            } catch (HibernateException e) {
                // TODO Auto-generated catch block
                  try
                  {
                      throw (Throwable)e;
                  }
                  catch(Throwable ex)
                  {
                      ex.printStackTrace();
                  }
            }
                System.out.println("AAge");
            
        
        SessionFactory factory=new Configuration().buildSessionFactory();
        Student st=new Student();
        st.setId(101);
        st.setName("Rishabh");
        st.setCity("Bangalore");
        Session session=factory.openSession();
        session.beginTransaction();
        session.save(st);
        session.getTransaction().commit();
        session.close();

请帮助解决这个问题，我检查了 pom.xml，它似乎是正确的，但仍然一次又一次地给出同样的错误

Answer 1

好吧，你没有使用这个配置文件。 请参阅您发布的行：

SessionFactory factory=new Configuration().buildSessionFactory();

它应该是

SessionFactory factory = new Configuration().configure("hibernate.cfg.xml")
    .buildSessionFactory();