会话工厂在Hibernate中返回为null。

huangapple
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标题翻译

SessionFactory returning null in Hibernate

问题

  1. 我是Hibernate的初学者，在创建`SessionFactory`时遇到了问题。
  3. **SessionFactoryProvider.java：**
  5. ```java
  6. public class SessionFactoryProvider {
  8.     private static SessionFactory factory;
  10.     public static SessionFactory getFactory() {
  12.         try {
  13.             if (factory == null) {
  14.                 Configuration cfg = new Configuration().configure("hibernate.cfg.xml");
  16.                 factory = cfg.buildSessionFactory();
  17.             }
  18.         } catch (Exception e) {
  19.             try {
  20.                 if (factory == null) {
  21.                     Configuration configuration = new Configuration();
  22.                     // Hibernate设置与hibernate.cfg.xml中的属性等效
  23.                     Properties property = new Properties();
  24.                     property.put(Environment.DRIVER, "com.mysql.jdbc.Driver");
  25.                     property.put(Environment.URL, "jdbc:mysql://localhost:3306/shopingsite");
  26.                     property.put(Environment.USER, "root");
  27.                     property.put(Environment.PASS, "");
  28.                     property.put(Environment.DIALECT, "org.hibernate.dialect.MySQL5Dialect");
  29.                     property.put(Environment.SHOW_SQL, "true");
  30.                     property.put(Environment.HBM2DDL_AUTO, "update");
  31.                     property.put(Environment.POOL_SIZE, 12);
  32.                     configuration.setProperties(property);
  33.                     configuration.addAnnotatedClass(Category.class);
  34.                     configuration.addAnnotatedClass(User.class);
  35.                     configuration.addAnnotatedClass(Product.class);
  37.                     ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
  38.                             .applySettings(configuration.getProperties()).build();
  39.                     factory = configuration.buildSessionFactory(serviceRegistry);
  41.                 }
  42.             } catch (HibernateException | NullPointerException he) {
  43.                 System.out.println("Both factory code Fail");
  44.             }
  45.         }
  47.         return factory;
  48.     }
  50.     public static void shutdow() {
  51.         factory.close();
  52.     }
  53. }

pom.xml：

  1. <!-- 在这里是pom.xml的内容 -->

hibernate.cfg.xml：

  1. <!-- 在这里是hibernate.cfg.xml的内容 -->

日志中显示的错误如下：

  1. Info:   MavenShopping was successfully deployed in 1,530 milliseconds.
  2. Info:   1
  3. Info:   HHH000412: Hibernate Core {5.4.6.Final}
  4. Info:   ******************************************
  5. Info:   HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
  6. WARN:   HHH10001002: Using Hibernate built-in connection pool (not for production use!)
  7. Info:   HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/shopingsite]
  8. Info:   HHH10001001: Connection properties: {user=root, password=****, autocommit=true}
  9. Info:   HHH10001003: Autocommit mode: true
  10. Warning:   StandardWrapperValve[RegistrationServlet]: Servlet.service() for servlet RegistrationServlet threw exception
  11. java.lang.NoSuchMethodError: org.hibernate.internal.CoreMessageLogger.debugf(Ljava/lang/String;I)V

如何解决这个问题？

  2. <details>
  3. <summary>英文翻译</summary>
  5. I am beginner in Hibernate and facing problem in creation of `SessionFactory`,
  7. **SessionFactoryProvider.java :** 
  9.     public class SessionFactoryProvider {
  10.     
  11.         private static SessionFactory factory;
  12.     
  13.         public static SessionFactory getFactory() {
  14.     
  15.             try {
  16.                 if (factory == null) {
  17.                     Configuration cfg = new Configuration().configure(&quot;hibernate.cfg.xml&quot;);
  18.     
  19.                     factory = cfg.buildSessionFactory();
  20.                 }
  21.             } catch (Exception e) {
  22.                 try {
  23.                     if (factory == null) {
  24.                         Configuration configuration = new Configuration();
  25.                         // Hibernate settings equivalent to hibernate.cfg.xml&#39;s properties
  26.                         Properties property = new Properties();
  27.                         property.put(Environment.DRIVER, &quot;com.mysql.jdbc.Driver&quot;);
  28.                         property.put(Environment.URL, &quot;jdbc:mysql://localhost:3306/shopingsite&quot;);
  29.                         property.put(Environment.USER, &quot;root&quot;);
  30.                         property.put(Environment.PASS, &quot;&quot;);
  31.                         property.put(Environment.DIALECT, &quot;org.hibernate.dialect.MySQL5Dialect&quot;);
  32.                         property.put(Environment.SHOW_SQL, &quot;true&quot;);
  33.                         property.put(Environment.HBM2DDL_AUTO, &quot;update&quot;);
  34.                         property.put(Environment.POOL_SIZE, 12);
  35.                         configuration.setProperties(property);
  36.                         configuration.addAnnotatedClass(Category.class);
  37.                         configuration.addAnnotatedClass(User.class);
  38.                         configuration.addAnnotatedClass(Product.class);
  39.     
  40.                         ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder()
  41.                                 .applySettings(configuration.getProperties()).build();
  42.                         factory = configuration.buildSessionFactory(serviceRegistry);
  43.                
  44.                     }
  45.                 } catch (HibernateException | NullPointerException he) {
  46.                     System.out.println(&quot;Both factory code Fail&quot;);
  47.                 }
  48.             }
  49.     
  50.             return factory;
  51.         }
  52.     
  53.         public static void shutdow() {
  54.             factory.close();
  55.         }
  56.     }
  57.     
  59. **pom.xml :**
  60.     
  61.     &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
  62.     &lt;project xmlns=&quot;http://maven.apache.org/POM/4.0.0&quot; xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot; xsi:schemaLocation=&quot;http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd&quot;&gt;
  63.             &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  64.         
  65.             &lt;groupId&gt;com.mycompany&lt;/groupId&gt;
  66.             &lt;artifactId&gt;MavenShopping&lt;/artifactId&gt;
  67.             &lt;version&gt;1.0-SNAPSHOT&lt;/version&gt;
  68.             &lt;packaging&gt;war&lt;/packaging&gt;
  69.         
  70.             &lt;name&gt;MavenShopping&lt;/name&gt;
  71.         
  72.             &lt;properties&gt;
  73.                 &lt;endorsed.dir&gt;${project.build.directory}/endorsed&lt;/endorsed.dir&gt;
  74.                 &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
  75.             &lt;/properties&gt;
  76.         
  77.             &lt;build&gt;
  78.                 &lt;plugins&gt;
  79.                     &lt;plugin&gt;
  80.                         &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
  81.                         &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
  82.                         &lt;version&gt;3.1&lt;/version&gt;
  83.                         &lt;configuration&gt;
  84.                             &lt;source&gt;1.7&lt;/source&gt;
  85.                             &lt;target&gt;1.7&lt;/target&gt;
  86.                             &lt;compilerArguments&gt;
  87.                                 &lt;endorseddirs&gt;${endorsed.dir}&lt;/endorseddirs&gt;
  88.                             &lt;/compilerArguments&gt;
  89.                         &lt;/configuration&gt;
  90.                     &lt;/plugin&gt;
  91.                     &lt;plugin&gt;
  92.                         &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
  93.                         &lt;artifactId&gt;maven-war-plugin&lt;/artifactId&gt;
  94.                         &lt;version&gt;2.6&lt;/version&gt;
  95.                         &lt;configuration&gt;
  96.                             &lt;failOnMissingWebXml&gt;false&lt;/failOnMissingWebXml&gt;
  97.                         &lt;/configuration&gt;
  98.                     &lt;/plugin&gt;
  99.                     &lt;plugin&gt;
  100.                         &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
  101.                         &lt;artifactId&gt;maven-dependency-plugin&lt;/artifactId&gt;
  102.                         &lt;version&gt;2.6&lt;/version&gt;
  103.                         &lt;executions&gt;
  104.                             &lt;execution&gt;
  105.                                 &lt;phase&gt;validate&lt;/phase&gt;
  106.                                 &lt;goals&gt;
  107.                                     &lt;goal&gt;copy&lt;/goal&gt;
  108.                                 &lt;/goals&gt;
  109.                                 &lt;configuration&gt;
  110.                                     &lt;outputDirectory&gt;${endorsed.dir}&lt;/outputDirectory&gt;
  111.                                     &lt;silent&gt;true&lt;/silent&gt;
  112.                                     &lt;artifactItems&gt;
  113.                                         &lt;artifactItem&gt;
  114.                                             &lt;groupId&gt;javax&lt;/groupId&gt;
  115.                                             &lt;artifactId&gt;javaee-endorsed-api&lt;/artifactId&gt;
  116.                                             &lt;version&gt;7.0&lt;/version&gt;
  117.                                             &lt;type&gt;jar&lt;/type&gt;
  118.                                         &lt;/artifactItem&gt;
  119.                                     &lt;/artifactItems&gt;
  120.                                 &lt;/configuration&gt;
  121.                             &lt;/execution&gt;
  122.                         &lt;/executions&gt;
  123.                     &lt;/plugin&gt;
  124.                 &lt;/plugins&gt;
  125.             &lt;/build&gt;
  126.             &lt;dependencies&gt;
  127.                 &lt;dependency&gt;
  128.                     &lt;groupId&gt;org.hibernate&lt;/groupId&gt;
  129.                     &lt;artifactId&gt;hibernate-core&lt;/artifactId&gt;
  130.                     &lt;version&gt;5.4.6.Final&lt;/version&gt;
  131.                     &lt;type&gt;jar&lt;/type&gt;
  132.                 &lt;/dependency&gt;
  133.                 &lt;dependency&gt;
  134.                     &lt;groupId&gt;mysql&lt;/groupId&gt;
  135.                     &lt;artifactId&gt;mysql-connector-java&lt;/artifactId&gt;
  136.                     &lt;version&gt;5.1.16&lt;/version&gt;
  137.                 &lt;/dependency&gt;
  138.                 &lt;dependency&gt;
  139.                     &lt;groupId&gt;javax&lt;/groupId&gt;
  140.                     &lt;artifactId&gt;javaee-web-api&lt;/artifactId&gt;
  141.                     &lt;version&gt;8.0&lt;/version&gt;
  142.                     &lt;type&gt;jar&lt;/type&gt;
  143.                 &lt;/dependency&gt;
  144.             &lt;/dependencies&gt;
  145.         &lt;/project&gt;
  147. **hibernate.cfg.xml**
  150.     &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
  151.     &lt;!DOCTYPE hibernate-configuration PUBLIC &quot;-//Hibernate/Hibernate Configuration DTD 3.0//EN&quot; &quot;http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd&quot;&gt;
  152.     &lt;hibernate-configuration&gt;
  153.       &lt;session-factory&gt;
  154.         &lt;property name=&quot;hibernate.hbm2ddl.auto&quot;&gt;update&lt;/property&gt;
  155.         &lt;property name=&quot;hibernate.dialect&quot;&gt;org.hibernate.dialect.MySQL5Dialect&lt;/property&gt;
  156.         &lt;property name=&quot;hibernate.connection.url&quot;&gt;jdbc:mysql://localhost:3306/shopingsite&lt;/property&gt;
  157.         &lt;property name=&quot;hibernate.connection.username&quot;&gt;root&lt;/property&gt;
  158.         &lt;property name=&quot;hibernate.connection.password&quot;/&gt;
  159.         &lt;property name=&quot;show_sql&quot;&gt;true&lt;/property&gt;
  160.         &lt;property name=&quot;hibernate.connection.autocommit&quot;&gt;true&lt;/property&gt;
  161.         &lt;property name=&quot;hibernate.connection.driver_class&quot;&gt;com.mysql.jdbc.Driver&lt;/property&gt;
  162.         &lt;mapping class=&quot;BeanFile.Category&quot;/&gt;
  163.         &lt;mapping class=&quot;BeanFile.Product&quot;/&gt;
  164.         &lt;mapping class=&quot;BeanFile.User&quot;/&gt;
  165.       &lt;/session-factory&gt;
  166.     &lt;/hibernate-configuration&gt;
  168. Error which was showing in the log is shown below
  169.   
  171.     Info:   MavenShopping was successfully deployed in 1,530 milliseconds.
  172.     Info:   1
  173.     Info:   HHH000412: Hibernate Core {5.4.6.Final}
  174.     Info:   ******************************************
  175.     Info:   HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
  176.     WARN:   HHH10001002: Using Hibernate built-in connection pool (not for production use!)
  177.     Info:   HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/shopingsite]
  178.     Info:   HHH10001001: Connection properties: {user=root, password=****, autocommit=true}
  179.     Info:   HHH10001003: Autocommit mode: true
  180.     Warning:   StandardWrapperValve[RegistrationServlet]: Servlet.service() for servlet RegistrationServlet threw exception
  181.     java.lang.NoSuchMethodError: org.hibernate.internal.CoreMessageLogger.debugf(Ljava/lang/String;I)V
  184. How to solve this ?
  190. </details>
  193. # 答案1
  194. **得分**: 0
  196. 你的[Hibernate SessionFactory][1]存在问题，与你的环境有关。看起来你的编译时库与运行时库不一致，因为在编码时使用的某个类的方法在服务器启动时不存在。
  198.     java.lang.NoSuchMethodError: org.hibernate.internal.CoreMessageLogger.debugf(Ljava/lang/String;I)V
  200. 这似乎是导致[SessionFactory创建][2]出现问题的主要原因。
  203.   [1]: https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/3-ways-to-build-a-Hibernate-SessionFactory-in-Java-by-example
  204.   [2]: https://www.youtube.com/watch?v=Fo11opVImo8
  206. <details>
  207. <summary>英文翻译</summary>
  209. The problem with your [Hibernate SessionFactory][1] has something to do with your environment. It would appear that your compile time libraries are not the same as your runtime libraries, as a method on one of the classes you use when coding isn&#39;t there when the server kicks off.
  211.     java.lang.NoSuchMethodError: org.hibernate.internal.CoreMessageLogger.debugf(Ljava/lang/String;I)V
  213. That seems to be the big problem triggering issues with [SessionFactory creation][2].
  216.   [1]: https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/3-ways-to-build-a-Hibernate-SessionFactory-in-Java-by-example
  217.   [2]: https://www.youtube.com/watch?v=Fo11opVImo8
  219. </details>

huangapple
  • 本文由 发表于 2020年5月30日 20:30:21
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