為什么在department edit 方法中會(huì)出現(xiàn)department為空指針異常。
在DepartmentAction中有 new Department,為什么在department edit 方法中會(huì)出現(xiàn)department為空指針異常。
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在DepartmentAction中有 new Department,為什么在department edit 方法中會(huì)出現(xiàn)department為空指針異常。
舉報(bào)
2017-03-27
public String edit(){
? ?Integer id =Integer.parseInt(org.apache.struts2.ServletActionContext.getRequest().getParameter("id"));
department = departmentService.findById(id);
return "editSuccess";
}
把獲取id值得方法修改一下
2017-03-12
試試能不能解決問(wèn)題，注意粗體字
//驅(qū)動(dòng)模型
private Department department ;
@Override
public Department getModel() {
return department;
}
改為：
private Department department = new Department()?;
@Override
public Department getModel() {
return department;
}
2016-11-21
http://blog.csdn.net/li_tengfei/article/details/6098145 這篇文章應(yīng)該能解決你的問(wèn)題
2016-11-07
有可能是department沒(méi)有正常接收到頁(yè)面?zhèn)鱽?lái)的數(shù)據(jù)吧！