@Controller public class DeptController { /** * 自动注入UserService * */ @Autowired @Qualifier("hrmService") private HrmService hrmService; /** * 处理/login请求 * */ @RequestMapping(value="/dept/selectDept") public String selectDept(Model model,Integer pageIndex, @ModelAttribute Dept dept){ System.out.println("selectDept -->>"); System.out.println("pageIndex = " + pageIndex); System.out.println("dept = " + dept); PageModel pageModel = new PageModel(); System.out.println("getPageIndex = " + pageModel.getPageIndex()); System.out.println("getPageSize = " + pageModel.getPageSize()); System.out.println("getRecordCount = " + pageModel.getRecordCount()); if(pageIndex != null){ pageModel.setPageIndex(pageIndex); } /** 查询用户信息 */ List<Dept> depts = hrmService.findDept(dept, pageModel); model.addAttribute("depts", depts); model.addAttribute("pageModel", pageModel); return "dept/dept"; }修改这段代码

这段代码中的问题可能是：

1. 在DeptController类中，没有引入HrmService类的包，需要在类头部添加import语句。

2. 在使用PageModel类时，需要先实例化一个PageModel对象，然后再设置pageIndex等属性值，否则会报空指针异常。

3. 在调用findDept()方法时，需要将pageModel作为参数传入，否则查询结果可能不正确。

修改后的代码如下：

import com.example.demo.service.HrmService;
import com.example.demo.entity.Dept;
import com.example.demo.util.page.PageModel;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

@Controller
public class DeptController {

    @Autowired
    @Qualifier("hrmService")
    private HrmService hrmService;

    @RequestMapping(value="/dept/selectDept")
    public String selectDept(Model model,Integer pageIndex,@ModelAttribute Dept dept){
        System.out.println("selectDept -->>");
        System.out.println("pageIndex = " + pageIndex);
        System.out.println("dept = " + dept);
        PageModel pageModel = new PageModel();
        if(pageIndex != null){
            pageModel.setPageIndex(pageIndex);
        }
        System.out.println("getPageIndex = " + pageModel.getPageIndex());
        System.out.println("getPageSize = " + pageModel.getPageSize());
        System.out.println("getRecordCount = " + pageModel.getRecordCount());
        /** 查询部门信息 */
        List<Dept> depts = hrmService.findDept(dept, pageModel);
        model.addAttribute("depts", depts);
        model.addAttribute("pageModel", pageModel);
        return "dept/dept";
    }
}

请注意，这里只是对代码进行了简单修改，具体是否能够运行还需要根据实际情况进行调试。