休止状態でメインの方法に固執する

Question

あなたの洞察力が必要な場合は、あなたの援助を待ちましょう。

これは、hibernateを使用してデータをdbに保持しようとする主な方法です。

package com.hibernate; 
import org.hibernate.Session; 
import org.hibernate.SessionFactory; 
import org.hibernate.cfg.Configuration; 

import com.hibernate.dto.Employee; 

public class HibernateTest { 

    public static void main(String[] args) { 

     Employee emp = new Employee(); 
     System.out.println("abc"); 

     emp.setFirstName("John"); 
     emp.setLastName("More"); 
     emp.setSalary(999999972); 

     SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory(); 
     Session session = sessionFactory.openSession(); 
     session.beginTransaction(); 
     session.save(emp); 
     session.getTransaction().commit(); 
     session.close(); 
     sessionFactory.close(); 

    } 

} 

これはモデルクラスです。従業員

package com.hibernate.dto; 

import javax.persistence.Entity; 
import javax.persistence.Id; 

@Entity 
public class Employee { 
    @Id 
     private int id; 
     private String firstName; 
     private String lastName; 
     private int salary; 

    public int getId() { 
     return id; 
    } 
    public void setId(int id) { 
     this.id = id; 
    } 
    public String getFirstName() { 
     return firstName; 
    } 
    public void setFirstName(String firstName) { 
     this.firstName = firstName; 
    } 
    public String getLastName() { 
     return lastName; 
    } 
    public void setLastName(String lastName) { 
     this.lastName = lastName; 
    } 
    public int getSalary() { 
     return salary; 
    } 
    public void setSalary(int salary) { 
     this.salary = salary; 
    } 

} 

ここにhibernate.cfg.xmlがあります。私のように記載されている含めました

<?xml version='1.0' encoding='utf-8'?> 

<hibernate-configuration 
     xmlns="http://www.hibernate.org/xsd/hibernate-configuration" 
     xsi:schemaLocation="http://www.hibernate.org/xsd/hibernate-configuration hibernate-configuration-4.0.xsd" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> 
    <session-factory> 
    <!-- Database connection settings --> 
    <property name="connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="connection.url">jdbc:mysql://localhost:3306/empdb</property> 
    <property name="connection.username">root</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.MySQLDialect</property> 

    <!-- Enable Hibernate's automatic session context management --> 
    <property name="current_session_context_class">thread</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">update</property> 
    <mapping class="com.hibernate.dto.Employee"/> 
    </session-factory> 
</hibernate-configuration> 

ジャー：私はこのJavaアプリケーションを実行すると

D:\hibernate-release-5.1.0.Final\lib\required\antlr-2.7.7.jar 
D:\hibernate-release-5.1.0.Final\lib\required\classmate-1.3.0.jar 
D:\hibernate-release-5.1.0.Final\lib\required\dom4j-1.6.1.jar 
D:\hibernate-release-5.1.0.Final\lib\required\geronimo-jta_1.1_spec-1.1.1.jar 
D:\hibernate-release-5.1.0.Final\lib\required\hibernate-commons-annotations-5.0.1.Final.jar 
D:\hibernate-release-5.1.0.Final\lib\required\hibernate-core-5.1.0.Final.jar 
D:\hibernate-release-5.1.0.Final\lib\required\hibernate-jpa-2.1-api-1.0.0.Final.jar 
D:\hibernate-release-5.1.0.Final\lib\required\jandex-2.0.0.Final.jar 
D:\hibernate-release-5.1.0.Final\lib\required\javassist-3.20.0-GA.jar 
D:\hibernate-release-5.1.0.Final\lib\required\jboss-logging-3.3.0.Final.jar 
D:\hibernate-release-5.1.0.Final\lib\jpa\hibernate-entitymanager-5.1.0.Final.jar 
D:\hibernate-release-5.1.0.Final\lib\java8\hibernate-java8-5.1.0.Final.jar 
C:\Users\arpit_pipersaniya\Downloads\javassist-3.12.0.GA.jar 
C:\Users\arpit_pipersaniya\Downloads\mysql-connector-java-5.1.18.jar 

、何も起こらないので、何の目的の結果。

Answer 1

コンフィギュレーションファイルを微調整することで、今や不具合なくファイルを処理できます。

これは今、hibernate.cfg.xmlのはどのように見えるかです：

<?xml version='1.0' encoding='utf-8'?> 
<!DOCTYPE hibernate-configuration 
     PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN" 
     "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> 
<hibernate-configuration> 

*<!-- <?xml version='1.0' encoding='utf-8'?> 

<hibernate-configuration 
     xmlns="http://www.hibernate.org/xsd/hibernate-configuration" 
     xsi:schemaLocation="http://www.hibernate.org/xsd/hibernate-configuration hibernate-configuration-4.0.xsd" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> -->* 

    <session-factory> 
    <!-- Database connection settings --> 
    <property name="connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="connection.url">jdbc:mysql://localhost:3306/empdb</property> 
    <property name="connection.username">root</property> 
    <property name="connection.password">root2</property> 

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

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

    <!-- Enable Hibernate's automatic session context management --> 
    <property name="current_session_context_class">thread</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">update</property> 
    <mapping class="com.hibernate.dto.Employee"/> 
    </session-factory> 
</hibernate-configuration>