org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: cn.oa.d
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有时候看着路很近,但万一掉坑了?
记录下踩了一下午的坑;
//1.回显上级部门集合下拉框
List<Department> departmentList = departmentService.findAll();
ActionContext.getContext().put("departmentList",departmentList);
//由传入的Id得到回显的数据
System.out.println(model.getId());
Department department = departmentService.getById(model.getId());
System.out.println(department);//错误
//将回显的数据记录放到栈顶
ActionContext.getContext().getValueStack().push(department);
//设置Action中的parentId属性用于进行回显(回显时,自动调用findValue()方法)
if(department.getParent() !=null ){
//如果该部门是顶层部门 则父部门为空
parentId = department.getParent().getId();
}
我一直在以为是我里面表Department department = departmentService.getById(model.getId());建错了,导致懒加载异常,分析我写的底层,最后猛然醒悟,我有个测试代码打印输出的习惯,后面加了打印,而此时业务层session已经关闭了。。真是被自己气的半死
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