java - hibernate.cfg.xml 的 MappingException

Question

我有一个与 hibernate-core 4.2.3.Final 一起使用的 Maven 项目。我已遵循此处提供的建议:

Where to place hibernate config?

Hibernate Tutorial - Where to put Mapping File?

并且src/main/resources中的配置文件如下所示:

<?xml version = "1.0" encoding = "utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="connection.url">jdbc:mysql://localhost:3306/justHibernate</property>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.username">root</property>
        <property name="connection.password">12345</property>
        <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>
        <mapping resource="com/mycompany/app/model/Movie.hbm.xml" />
    </session-factory>
</hibernate-configuration>

当映射文件与 Movie 类一起位于包 com.mycompany.app.model 中时:

<?xml version = "1.0" encoding = "utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD//EN"
        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="com.mycompany.app.model.Movie" table="Movies">
        <id name="id" column="id">
            <generator class="native"/>
        </id>
        <property name="title" column="title"/>
        <property name="director" column="director"/>
        <property name="synopsis" column="synopsis"/>
    </class>
</hibernate-mapping>

异常

配置找不到映射文件。

INFO: HHH000221: Reading mappings from resource: com/mycompany/app/model/Movie.hbm.xml
Exception in thread "main" org.hibernate.MappingNotFoundException: resource: com/mycompany/app/model/Movie.hbm.xml not found
    at org.hibernate.cfg.Configuration.addResource(Configuration.java:738)
    at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:2167)
    at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:2139)
    at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2119)
    at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2072)
    at org.hibernate.cfg.Configuration.configure(Configuration.java:1987)
    at org.hibernate.cfg.Configuration.configure(Configuration.java:1966)
    at com.mycompany.app.MovieManager.initSessionFactory(MovieManager.java:22)
    at com.mycompany.app.MovieManager.<init>(MovieManager.java:17)
    at com.mycompany.app.App.main(App.java:27)

Answer 1

将 Movie.hbm.xml 放置在 src/main/resources 下，并按如下方式更改配置文件中的路径，

<mapping resource="Movie.hbm.xml" />

希望这有帮助。