1.可能是因为映射文件( Order.hbm.xm)配置的class路径出错 <hibernate-mapping> <class name="com.web.bean.Order" table="order"> <id name="orderId" type="java.lang.Integer" column="order_id"> <generator cla…

今天学习使用ssh框架的时候,出现一个异常,弄了好久才找到,在这记录一下,我的sb错误1.spring整合hibernate,取代*.hbm.xml配置文件   在applicationContext.xml文件中配置方式 `<!-- 数据库连接池 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name=&qu…

开始运行得很好的项目,因为前一天高度了项目结构和名称突然报上面的错误 查了很多网上资料很多解决方案 造成这个错误的原因有很多,例如 1.@Entity 类有变动,无非正常生成对应的数据库. 解决:使用 spring: jpa: hibernate:ddl-auto: create 删除之前的数据库,重新重建数据库 2.变量的类型不对,例如:使用list的变量,就会出现这个错误 3.使用多个@Id注解的方式不正确. 解决:如何使用联合主键(复合主键) 4.@Column(name)的注解与数据库字…

1.错误信息 org.springframework.dao.InvalidDataAccessApiUsageException: detached entity passed to persist: sys.entity.Role; nested exception is org.hibernate.PersistentObjectException: detached entity passed to persist: sys.entity.Role at org.springframew…

原因: 这个问题的解决方案很简单,主要是因为数据库中不存在相关的表或者列. org.springframework.dao.InvalidDataAccessApiUsageException: Parameter with that position [1] did not exist; nested exception is java.lang.IllegalArgumentException: Parameter with that position [1] did not exist o…

SSH框架出现了下面的错误: nested exception is org.hibernate.QueryException: could not resolve property 检查了hbm.xml文件无误,后来才发现是查询语句的属性名大小写搞错了.…

严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in cla…

1.什么操作出现:当我在项目中添加产品或者修改时,浏览器出现HTTP Status 500 - Request processing failed; nested exception is org.hibernate.exception.GenericJDBCException: could not execute statement; Ecplise出现这个: 十二月 20, 2017 1:51:02 下午 org.apache.catalina.core.StandardWrapperVal…

org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.JDBCConnectionException: Cannot open connection org.springframework.orm.hibernate3.Hiberna…

spring与hibernate整合然后出现如下错误: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.hib…

org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet" 最终解决:是因为我昨天对数据库修改,去掉一列…

报错 type Exception report message HHH000142: Javassist Enhancement failed: cn.itcast.entity.Customer; nested exception is org.hibernate.HibernateException: HHH000142: Javassist Enhancement failed: cn.itcast.entity.Customer description The server encou…

在使用模型驱动封装的时候,要保证表单中name属性名和类中属性名一致,否则将会报错如下: HTTP Status 500 - The given object has a null identifier: cn.itcast.entity.Customer; nested exception is org.hibernate.TransientObjectException: The given object has a null identifier: cn.itcast.entity.Cus…

今天报了这个异常,这是页面报的 org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate. 控制台报 18:52:35,859 ERROR SqlExceptionHelper:147 - Cannot delete or update a parent r…

报错如下: org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; nested exception is org.hibernate.exception.DataException: could not execute statement at org.springframework.orm.jpa.vendor.HibernateJpaDialect.co…

org.springframework.dao.InvalidDataAccessResourceUsageException: could not execute statement; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not execute statement 报以上错误,是数据库操作错误:可能是: 1.数据库语句 2.数据库存在否 可以根据下面的信息判断错误地方…

使用SpringBoot做JAVA开发时,用Repository.save();保存数据的时候遇到了报错: could not execute statement; SQL [n/a]; constraint [PRIMARY]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement 去搜索了一下解决方法,需要将主键设置自增,虽然不清楚为什么,但是…

用entityManager保存数据时报错如下 identifier of an instance of xx.entity was altered from xxKey@249e3cb2 to xxKey@74e8f4a3; nested exception is org.hibernate.HibernateException: identifier of an instance of xxentity was altered from xxKey@249e3cb2 to xxKey@74e…

异常名称 org.hibernate.MappingException: Unknown entity: org.hibernate.cfg.Configuration 异常详细信息 org.hibernate.MappingException: Unknown entity: org.hibernate.cfg.Configuration at org.hibernate.internal.SessionFactoryImpl.getEntityPersister(SessionFactory…

场景: 在使用spring整合hibernate调用的HibernateTemplate时报错解决: 在spring配置文件中添加事务的配置 <bean id="hibernateTransactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager"> <!-- 注入sessionFactory,配置sessionFactory -->…

edit.jsp页面没有加入隐藏字段 id ,导致模型驱动封装时缺少id ,,调用update更新数据库时出错!…

如果增加配置了current_session_context_class属性,查询的时候需要session.beginTrasaction()来开启事务…

上网查了一下,说的是自增惹得麻烦!!在@GeneratedValue后面加上框框中的内容就OK拉!…

Linux下mysql修改连接超时wait_timeout 1,首先: show variables like '%timeout%': 显示结果: +-----------------------------+----------+ | Variable_name               | Value    | +-----------------------------+----------+ | connect_timeout             | 10       | | d…

今天处理的任务是从一套系统中分离出微信易信功能代码添加到另一套系统中..本来是一个很简单的任务,但是分离移植过去后,一运行报了个错: nested exception is org.hibernate.MappingException: Unknown entity 一看错误提示,看来是hibernate的映射出问题了,看了一下po类存在,又看了一下映射的.hbm.xml配置文件也在,看了一下内容也没问题,也不可能有问题本来就是现成系统中分离出来的..有点迷惑了,百度了一下,有说@Entity注…

昨晚修改了一些表关系,在相关的hbm.xml文件中做了改动,今天早上起来启动tomcat后,发现项目启动不了,控制台报错: 2015-6-14 9:09:42 org.apache.catalina.core.StandardContext listenerStart 严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.Conte…

1.错误描述 org.springframework.beans.factory.BeanCreationException:Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]:Invocation of init method failed;nested exception is org.hibernate.Mapp…

hibernate3.0 org.dom4j.DocumentException: Connection timed out: connect Nested exception:   所报异常: 严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListenerorg.springframework.b…

启动tomcat, 出现, ( 之前都是好好的... ) [lk ] ERROR [08-12 15:10:02] [main] org.springframework.web.context.ContextLoader.initWebApplicationContext(215) | Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean…

在复制xml文件进行修改的时候,我经常将不小心对原文件进行修改,而导致创建bean出错.报错如下所示: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException: Error creatin…