這是我的文件結(jié)構(gòu)Grade.hbm.xml????????????<hibernate-mapping> <class name="com.imooc.entity.Grade" table="grade"> <id name="gid" column="gid" type="java.lang.Integer"> <generator class="increment"></generator> </id> <property name="gname" type="java.lang.String"> <column name="gname" length="20" not-null="true"></column> </property> <property name="gdesc"> <column name="gdesc"></column> </property> <!-- 配置一對多關(guān)聯(lián)關(guān)系 --> <set name="students" table="student"> <key column="gid"></key> <one-to-many class="com.wzl.entity.Student"/> </set> </class></hibernate-mapping>hibernate.cfg.xml<hibernate-configuration>? ? <session-factory>? ? ? ? <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>? ? ? ? <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>? ? ? ? <property name="hibernate.connection.username">root</property>? ? ? ? <property name="hibernate.connection.password">123</property>? ? ? ? <property name="hibernate.connection.url">? ? ? ? <![CDATA[? ? ? ? jdbc:mysql://localhost:3306/wzl?useUnicode=true&characterEncoding=utf8? ? ? ? ]]>? ? ? ? </property>? ? ? ? <property name="show_sql">true</property>? ? ? ? <property name="hbm2ddl.auto">update</property>? ??? ? <!-- 指定映射文件的路徑 -->? ? <mapping resource="com.wzl.entity.Grade.hbm.xml"/>? ? <mapping resource="com.wzl.entity.Student.hbm.xml"/>? ? </session-factory></hibernate-configuration>報錯：十月 08, 2016 12:51:42 下午 org.hibernate.annotations.common.Version <clinit>INFO: HCANN000001: Hibernate Commons Annotations {4.0.2.Final}十月 08, 2016 12:51:42 下午 org.hibernate.Version logVersionINFO: HHH000412: Hibernate Core {4.2.4.Final}十月 08, 2016 12:51:42 下午 org.hibernate.cfg.Environment <clinit>INFO: HHH000206: hibernate.properties not found十月 08, 2016 12:51:42 下午 org.hibernate.cfg.Environment buildBytecodeProviderINFO: HHH000021: Bytecode provider name : javassist十月 08, 2016 12:51:42 下午 org.hibernate.cfg.Configuration configureINFO: HHH000043: Configuring from resource: /hibernate.cfg.xml十月 08, 2016 12:51:42 下午 org.hibernate.cfg.Configuration getConfigurationInputStreamINFO: HHH000040: Configuration resource: /hibernate.cfg.xml十月 08, 2016 12:51:42 下午 org.hibernate.cfg.Configuration addResourceINFO: HHH000221: Reading mappings from resource: com.wzl.entity.Grade.hbm.xmlException in thread "main" org.hibernate.MappingNotFoundException: resource: com.wzl.entity.Grade.hbm.xml not found at org.hibernate.cfg.Configuration.addResource(Configuration.java:738) at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:2188) at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:2160) at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2140) at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2093) at org.hibernate.cfg.Configuration.configure(Configuration.java:2008) at org.hibernate.cfg.Configuration.configure(Configuration.java:1987) at com.wzl.test.Test2.add(Test2.java:34) at com.wzl.test.Test2.main(Test2.java:20)