java - org.hibernate.MappingNotFoundException : resource: com/corp/dept/proj/FooTbl. hbm.xml 未找到

Question

不，这与 this one 不是同一个问题或this one或this one .

原因很简单，我的 *.hbm.xml 文件已经位于正确的目录中 (src/main/resources/com/corp/dept/proj)。

此外，只要我在 HibernateUtil.java 中使用这个简单的静态方法静态地(即在构建时硬编码)从 hibernate.cfg.xml 获取所有内容，它就可以正常运行:

private static SessionFactory buildSessionFactory() {
    try {
        return new Configuration().configure("resources/hibernate.cfg.xml").buildSessionFactory();
    }
    catch (Throwable ex) {
        System.err.println("Initial SessionFactory creation failed." + ex);
        throw new ExceptionInInitializerError(ex);
    }
} 

但是由于我想将一些参数从 hibernate.cfg.xml 移动到要在运行时读取的属性文件(例如数据库的“connection.url”):

static {
  try {
    sessionFactory = buildHibernateConfig().buildSessionFactory();
  } catch (Throwable ex) {
    System.out.println("Initial SessionFactory creation failed: " + ex.getMessage());
    throw new ExceptionInInitializerError(ex);
  }
}

和

private static Configuration buildHibernateConfig() throws FileNotFoundException, IOException {

  Properties properties = new Properties();
  sConfig = new Configuration().configure("resources/hibernate.cfg.xml");

  try {
    properties.load(ServiceUtils.class.getResourceAsStream(MYWS_PROPS));
  } 
  catch (IOException e) {
    LOG.severe("Cannot find properties file " + MYWS_PROPS);
    throw new SecurityException("Server Error: couldn't open " + MYWS_PROPS + " file");
  }

  /*hardcoded*/sConfig.setProperty("hibernate.connection.driver_class", "com.mysql.jdbc.Driver");/*hardcoded*/
  /*hardcoded*/sConfig.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");/*hardcoded*/
  sConfig.setProperty("hibernate.connection.url", properties.getProperty("dburl"));

  // Add Hibernate XML mappings
  sConfig.addClass(FooTbl.class);

  return sConfig;
}

我遇到运行时异常:

Apr 03, 2014 14:31:49 AM org.hibernate.annotations.common.Version <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.2.Final}
Apr 03, 2014 14:31:49 AM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.2.6.Final}
Apr 03, 2014 14:31:49 AM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Apr 03, 2014 14:31:49 AM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Apr 03, 2014 14:31:49 AM org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: resources/hibernate.cfg.xml
Apr 03, 2014 14:31:49 AM org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: resources/hibernate.cfg.xml
Apr 03, 2014 14:31:49 AM org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: resources/com/corp/dept/proj/FooTbl.hbm.xml

Apr 03, 2014 14:31:49 AM org.hibernate.cfg.Configuration doConfigure
INFO: HHH000041: Configured SessionFactory: null
Apr 03, 2014 14:31:49 AM org.hibernate.cfg.Configuration addClass
INFO: HHH000221: Reading mappings from resource: com/corp/dept/proj/FooTbl.hbm.xml
Apr 03, 2014 14:31:49 AM org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: com/corp/dept/proj/FooTbl.hbm.xml
Initial SessionFactory creation failed: resource: com/corp/dept/proj/FooTbl.hbm.xml not found

Caused by: org.hibernate.MappingNotFoundException: resource: com/corp/dept/proj/FooTbl.hbm.xml not found
        at org.hibernate.cfg.Configuration.addResource(Configuration.java:712)
        at org.hibernate.cfg.Configuration.addClass(Configuration.java:757)
        at com.corp.dept.proj.myws.HibernateUtil.buildHibernateConfig(HibernateUtil.java:141)
        at com.corp.dept.proj.myws.HibernateUtil.<clinit>(HibernateUtil.java:56)

现在...在出现异常之前，日志显示已找到文件。我还验证了这些文件实际上包含在 WAR 文件中，位于与预期相同的子目录中。那么，为什么会出现此错误？

解决这个问题的推荐方法是什么？

Answer 1

获取配置 (sConfig) 实例后，您尝试错误地添加 XML 映射文档。由于您使用的是基于 XML 的映射文件 (.hbm)，因此要添加 xml 映射文件，您需要使用 addResource() 方法，而不是 addClass() 方法。

addClass() 方法用于添加基于注释的映射。

所以替换

sConfig.addClass(FooTbl.class);

与

sConfig.addResource("com/corp/dept/proj/FooTbl.hbm.xml");

希望这能解决您的问题。