cannot be cast to java.util.arraylist
场景：java.util.ArrayList cannot be cast to .pojo.SchoolInfo解决方案
java.util.ArrayList cannot be cast to ....pojo.SchoolInfo
做了一个修改学校的模块，如下，大家帮忙看看哪里写错了。
SchoolAction.java
SchoolService.java
SchoolDao.java
updateschool.jsp
------解决方案--------------------
1.首先你的findSchoolById找到的不止一条数据，才会报ArrayList can not be cast to SchoolInfo
2.第二你的Controller接收的参数不对
@RequestMapping..
public String updateSchool(SchoolInfo schoolInfo,HttpServletRequest request){}
java.util.ArrayList cannot be cast to ....pojo.SchoolInfo
做了一个修改学校的模块，如下，大家帮忙看看哪里写错了。
SchoolAction.java
SchoolService.java
SchoolDao.java
updateschool.jsp
------解决方案--------------------
1.首先你的findSchoolById找到的不止一条数据，才会报ArrayList can not be cast to SchoolInfo
2.第二你的Controller接收的参数不对
@RequestMapping..
public String updateSchool(SchoolInfo schoolInfo,HttpServletRequest request){}