1

我用camel casing.This 命名了类变量。这是类,这似乎是罪魁祸首。

import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import java.sql.Date;

public class GameBoard
{
    @Temporal(TemporalType.DATE)
    private Date lastMoveDate;

    /**
     * @return the lastMoveDate
     */
    public Date getLastMoveDate() {
        return lastMoveDate;
    }

    /**
     * @param lastMoveDate the lastMoveDate to set
     */
    public void setLastMoveDate(Date lastMoveDate) {
        this.lastMoveDate = lastMoveDate;
    }

}

该类有几个其他变量,例如playerOneFk,playerTwoFkgameLobbyFk(hibernate 能够跟踪setter-getter这些变量中的每个变量,但是会在列中抛出异常last_move_date)。

我也尝试过方法名称setlastMoveDategetlastMoveDate(没有运气..),属性..lastMoveDate

<property name="lastMoveDate" type="date" column="last_move_date" />

和捕获的异常

SEVERE: Servlet.service() for servlet [authapi] in context with path [/TTTserver] threw exception [Servlet execution threw an exception] with root cause
org.hibernate.PropertyNotFoundException: Could not find a getter for lastMoveDate in class com.hib.objects.GameBoard
    at org.hibernate.property.BasicPropertyAccessor.createGetter(BasicPropertyAccessor.java:282)
    at org.hibernate.property.BasicPropertyAccessor.getGetter(BasicPropertyAccessor.java:275)
    at org.hibernate.mapping.Property.getGetter(Property.java:272)
    at org.hibernate.tuple.entity.PojoEntityTuplizer.buildPropertyGetter(PojoEntityTuplizer.java:247)
    at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:125)
    at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:55)
    at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:56)
    at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:295)
    at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:434)
    at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:109)
    at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
    at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:226)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1294)
    at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:859)
    at com.hib.objects.HibernateUtil.<clinit>(HibernateUtil.java:24)
    at nz.ac.massey.cs.capstone.auth.authapi.processRequest(authapi.java:42)
    at nz.ac.massey.cs.capstone.auth.authapi.doGet(authapi.java:74)
4

2 回答 2

2

在 Hibernate 中,属性类型“date”映射到 java.sql.Date。

如果您使用的是 java.util.Date,您将希望您的属性类型为“时间戳”。

像现在这样使用“日期”会导致它查找在 java.sql.Date 上运行的 getter/setter,但它无法找到它。

请参阅Hibernate 基本类型参​​考(6.1.1.12 和 6.1.1.14)。

编辑:解决一些命名约定问题:

Hibernate 遵循标准的 bean 命名约定:

  • 字段:someField
  • 属性:someField(与字段名相同)
  • Getter:getSomeField() 或 isSomeField()(如果是布尔值)
  • 二传手:setSomeField()
于 2013-08-06T07:09:39.157 回答
1

<property name="LastMoveDate" type="date" column="last_move_date" />

应该管用...

于 2013-08-06T07:08:22.223 回答