hibernate could not insert: [com.Hibernate.bean.addCitybean]

Question

大家帮我看看 映射的对不对表：主键   id        bigint  8
       city      varchar 50
       continet  varchar 50addCitybean.hbm.xml:<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
                                   "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- 
    Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
<hibernate-mapping>
 <class name="com.Hibernate.bean.addCitybean" table="City_Port">
  <id name="id" type="java.lang.Long">
   <column name="id"/>
   <generator class="identity"/>
  </id>
  <property name="city" type="java.lang.String">
   <column length="50" name="city" not-null="true"/>
  </property>
  <property name="continet" type="java.lang.String">
   <column length="50" name="continet" not-null="true"/>
  </property>
 </class>
</hibernate-mapping>
bean:package com.Hibernate.bean;import java.io.Serializable;public class addCitybean implements Serializable {
/**
 * 
 */
private static final long serialVersionUID = 5802152950682227293L;
private int id;
private String city;
private String continet;
public addCitybean() {
// TODO Auto-generated constructor stub
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getContinet() {
return continet;
}
public void setContinet(String continet) {
this.continet = continet;
}

}
这么写有问题吗？
 could not insert:[com.Hibernate.bean.addCitybean] 是什么问题？   

Answer 1

没有保存成功的异常嘛
主键生成策略是identity，你id列在数据中是标识列类型？
以后问问题要记得把关键的异常信息贴出来，这信息太简单了，看不出什么来

Answer 2

type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: could not insert: [com.Hibernate.bean.addCitybean]
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause org.hibernate.exception.GenericJDBCException: could not insert: [com.Hibernate.bean.addCitybean]
org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:103)
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:91)
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:40)
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2108)
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2588)
org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:48)
org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:290)
org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:180)
org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:108)
org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535)
org.hibernate.impl.SessionImpl.save(SessionImpl.java:523)
org.hibernate.impl.SessionImpl.save(SessionImpl.java:519)
com.Hibernate.addCity.addCityc.addCitycc(addCityc.java:13)
com.yourcompany.struts.action.AddAction.execute(AddAction.java:49)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.20 logs.全部异常提示

Answer 3

Tomcat5.5的啊，我用的是Tomcat6.0的，这个没见过，Tomcate版本不一样异常也不一样的！！！

Answer 4

你的bean里面的id是int类型的，配置里面是long类型的，不知道这样有没有关系！！！改成long类型的试试？
关注

Answer 5

id 在数据库中的字段设置成主键自增的 因为你的 hbm映射文件中设置了、
 <id name="id" type="java.lang.Long"> 
  <column name="id"/> 
  <generator class="identity"/> 
  </id> 
这样与数据库的映射就不对了