1.org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.chen.vo.Teacher.students, no session or session was closed 异常描述:运行以下方法出现.注:持久类Teacher与Student呈多对多关联. @Test//fail public void query2(){ List list = hibe…

今天搞了一上午,都在解决这个问题:org.hibernate.LazyInitializationException: failed to lazily initialize 原因很简单,是在非法的session中去调用lazy=“true“的属性, 网上资料蛮多的,解决方法有两个 1,把lazy=”false“ 2,在web.xml中加入:(在structs的过滤器之前) <filter> <filter-name>hibernateFilter</filter-name&…

(org.hibernate.LazyInitializationException:19) - could not initialize proxy错误 在刚插入数据后,马上使用dao进行query数据,导致这个错误. <many-to-one>的属性设置lazy="flase" 这样就可以了…

问题描写叙述: Struts Problem Report Struts has detected an unhandled exception: Messages: could not initialize proxy - no Session Error reading 'name' on type future.oa.domain.Department_$$_jvstb8a_0 javax.el.ELException: Error reading 'name' on type futur…

org.hibernate.LazyInitializationException:failed to lazily initialize a collection of role:cn.its.oa.domain.Department.children,no session or session was closed (在ssh框架下的项目中出现了这个错误,被老鸟一眼就看出了问题所在,改正过来了,在这里记录一下)分析下导致这种异常的出现的原因:在设置两个实体之间多对一的关系的时候 对象实例化失…

org.hibernate.LazyInitializationException: could not initialize proxy - no Session 前言 在<many-to-on>中这错误很常见,字面意义就是不能被初始化,因为session已经关闭了. 简单理解就是因为,你使用了lazy=true,这样hibernate在从数据库中调数据的时候是不会把关联的对象查出来的,而是保存一个获取值的方法,在你使用getXXX()调用的时候,hiberante会利用这个保存的方法去从数…

org.hibernate.LazyInitializationException: could not initialize proxy [org.alan.entity.SysUser#1] - no Session 五个解决方案 1.关闭LazyInitialization, 将fetch设成eager,可以在配置文件,也可注解 2.在spring boot的配置文件application.properties添加spring.jpa.open-in-view=true,yml同理 3.用…

public static void main(String[] args) {  DeptEntity dept = getDept("402882e762ae888d0162ae888e420000"); //dept.getEmp()得到子表的记录集合 System.out.println(dept.getEmp()); } private static DeptEntity getDept(String did){ Session session = sessionFactor…

异常名称: org.hibernate.LazyInitializationException: could not initialize proxy - no Session 异常截图: 异常详情: org.hibernate.LazyInitializationException: could not initialize proxy - no Session at org.hibernate.proxy.AbstractLazyInitializer.initialize(Abstract…

org.hibernate.LazyInitializationException: could not initialize proxy - no Session org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:132) org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInit…