javax.servlet.ServletException: java.lang.NullPointerException
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:515)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:421)我的项目是SSH框架,总是报这个错,我把里面的调用全部改成调用只返回固定值 的方法,根本就不访问数据库还是报这个错。请大家帮助一下
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:515)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:421)我的项目是SSH框架,总是报这个错,我把里面的调用全部改成调用只返回固定值 的方法,根本就不访问数据库还是报这个错。请大家帮助一下
import com.stustudy.dao.UsersDAOInterface;
import com.stustudy.entity.Users;
import com.stustudy.service.UsersServiceInterface;
public class LoginAction {
private UsersServiceInterface usersService;
private Users users;
private List<Users> usersList;
private String username;
private String pwd;
private UsersDAOInterface usersDAO;
public String findUsers(){
int x = usersService.test(1);
if(x==1){
return "success";
}else
{return "error";}
}
你只声明了usersService,下面没见你new一下当然还是null的了。