我正在使用我的 xml 文件来从我的数据库映射新表，但是当我启动项目时，我收到一个我无法理解和解决的重复属性映射错误。这是我的 hibernate cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory name="session1">
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password"/>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/realestate</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>
<property name="hibernate.connection.CharSet">utf8</property>
<property name="hibernate.connection.characterEncoding">utf8</property>
<property name="hibernate.connection.useUnicode">true</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.format_sql">true</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.c3p0.min_size">5</property>
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.timeout">300</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.c3p0.idle_test_period">3000</property>
<property name="hibernate.connection.CharSet">utf8</property>
<property name="hibernate.connection.characterEncoding">utf8</property>
<property name="hibernate.connection.useUnicode">true</property>
<mapping resource="entities/users.hbm.xml"/>
<mapping resource="entities/adminstration.hbm.xml"/>
<mapping resource="entities/seller.hbm.xml"/>
<mapping resource="entities/buyer.hbm.xml"/>
<mapping resource="entities/renter.hbm.xml"/>
<mapping resource="entities/leeser.hbm.xml"/>
<mapping resource="entities/house.hbm.xml"/>
<mapping resource="entities/userSellsHouse.hbm.xml"/>
<mapping resource="entities/userRentsHouse.hbm.xml"/>
<mapping resource="entities/messages.hbm.xml"/>
</session-factory>
</hibernate-configuration>
messages.hbm.xml 文件：
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="entities.Message" table="MESSAGES" schema="realestate">
<id name="messageID" type="int">
<column name="messsageID" />
</id>
<property name="Date" type="java.lang.String">
<column name="Date" />
</property>
<property name="SenderID" type="java.lang.Integer">
<column name="Sender" />
</property>
<property name="ReceiverID" type="java.lang.Integer">
<column name="Receiver" />
</property>
<property name="Message" type="java.lang.String">
<column name="Message" />
</property>
<property name="Theme" type="java.lang.String">
<column name="Theme" />
</property>
</class>
</hibernate-mapping>
和消息持久类：
public class Message {
int MessageID;
int SenderID;
int ReceiverID;
String date;
String message;
String theme;
public int getMessageID() {
return MessageID;
}
public void setMessageID(int messageID) {
MessageID = messageID;
}
public int getSenderID() {
return SenderID;
}
public void setSenderID(int senderID) {
SenderID = senderID;
}
public int getReceiverID() {
return ReceiverID;
}
public void setReceiverID(int receiverID) {
ReceiverID = receiverID;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public String getTheme() {
return theme;
}
public void setTheme(String theme) {
this.theme = theme;
}
}
这是错误
...
Caused by: org.hibernate.MappingException: Duplicate property mapping of SenderID found in entities.Messages
at org.hibernate.mapping.PersistentClass.checkPropertyDuplication(PersistentClass.java:515)
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:505)
at org.hibernate.mapping.RootClass.validate(RootClass.java:270)
at org.hibernate.cfg.Configuration.validate(Configuration.java:1358)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1849)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1928)
at database.HibernateUtil.<clinit>(HibernateUtil.java:15)
... 46 more
Edit:我尝试注释掉<mapping resource="entities/messages.hbm.xml"/>从 cfg 文件中，我仍然收到相同的错误。
Edit2:上面来自一个 java EE 项目，我将所有内容复制粘贴到一个简单的 java 项目中，并且运行良好。有什么建议吗？
Edit3:我在 messages 类中添加了final修饰符以确保它不能被继承
