获取org.hibernate.DuplicateMappingException:在hibernate3.0中复制类/实体映射

Question

我试图运行使用web应用程序hibernate3.0与struts2-core-2.1.6上Tomcat7.0.55同JDK8.我到了 org.hibernate.DuplicateMappingException: Duplicate class/entity mapping com.poste.struts2.bean.CityDetails.我hibernate.cfg.xml是:

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
  "-//Hibernate/Hibernate Configuration DTD//EN"
  "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
     <session-factory>     
        <property name="connection.useUnicode">true</property> 
        <property name="connection.characterEncoding">UTF-8</property>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.url">jdbc:mysql://localhost:3306/mydb</property>
        <property name="connection.username">uname</property>
        <property name="connection.password">pass</property>
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="current_session_context_class">thread</property>
        <property name="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>     
        <property name="hibernate.show_sql">true</property> 
        <property name="format_sql">true</property> 
        <property name="hibernate.use_sql_comments">true</property>         
        <mapping class="com.poste.struts2.bean.CityDetails" />
        </session-factory>
</hibernate-configuration>

类代码是:

package com.poste.struts2.bean;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.annotations.GenericGenerator;
@Entity
@Table(name = "city_master")
public class CityDetails implements Serializable {
    private static final long serialVersionUID = 9149826260758390091L;
    private Long cityId;
    private String cityName;
    private String cityStatus;
    @Id
    @GenericGenerator(name="generator", strategy="increment")
    @GeneratedValue(generator="generator")
    @Column(name = "CITM_CITY_ID")
    public Long getCityId(){
        return this.cityId;
    }
    public void setCityId(Long cityId){
        this.cityId = cityId;
    }
    @Column(name = "CITM_CITY_NAME", columnDefinition = "nvarchar", length = 100)
    public String getCityName(){
        return this.cityName;
    }
    public void setCityName(String cityName){
        this.cityName = cityName;
    }
    @Column(name = "CITM_STATUS")
    public String getCityStatus() {
        return cityStatus;
    }
    public void setCityStatus(String cityStatus) {
        this.cityStatus = cityStatus;
    }
}

我的WEB-INF/lib包含

activation-1.1.jar
antlr-2.7.6.jar
commons-beanutils.jar
commons-collections-3.1.jar
commons-fileupload-1.2.1.jar
commons-io-1.3.2.jar
commons-lang-2.3.jar
commons-logging-1.0.4.jar
dom4j-1.6.1.jar
ejb3-persistence.jar
freemarker-2.3.16.jar
hibernate-annotations.jar
hibernate-commons-annotations.jar
hibernate-validator.jar
hibernate3.jar
hsqldb.jar
httpclient-4.0.jar
itext-2.1.7.jar
java-mail-1.4.4.jar
JavaBridge.jar
javassist.jar
javax.persistence.jar
jcommon-1.0.16.jar
jfreechart-1.0.13.jar
json.jar
jta-1.1.jar
junit-3.8.1.jar
log4j-1.2.14.jar
mysql-connector-java-5.1.32.jar
ognl-2.6.11.jar
php-servlet.jar
poi-3.2-FINAL-20081019.jar
slf4j-api-1.5.8.jar
slf4j-log4j12-1.5.8.jar
slf4j-simple-1.5.8.jar
struts2-convention-plugin-2.1.6.jar
struts2-core-2.1.6.jar
struts2-dojo-plugin-2.2.3.jar
struts2-fullhibernatecore-plugin-1.4-GA.jar
struts2tutorial.jar
xwork-2.1.2.jar

COLUMNS是:

CITM_CITY_ID    decimal(10,0)
CITM_CITY_NAME  varchar(200 
CITM_STATUS     varchar(20) 

任何的想法？谢谢

Answer 1

问题是您com.poste.struts2.bean.CityDetails在hibernate配置文件中有映射,并且您在注释中有映射.

从中移除以下行 hibernate.cfg.xml

 <mapping class="com.poste.struts2.bean.CityDetails" />

或删除CityDetails课堂上的注释.

Answer 2

这样的重复也可能是由于重命名映射的类并构建应用程序而不消除旧类(例如,使用Maven构建而不先运行"mvn clean").