src/com/controller/HomeworkController.java

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package com.controller;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Objects;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import com.util.PageUtil;
import com.util.UploadUtil;

import com.entity.Course;
import com.service.CourseService;
import com.service.TeacherService; 

import com.entity.Homework;
import com.service.HomeworkService;

@Controller
@RequestMapping("")
public class   HomeworkController {
	private static final int rows = 10;
	@Autowired
	private CourseService courseService;
	@Autowired
	private TeacherService teacherService;
	@Autowired
	private HomeworkService homeworkService;
	

	@RequestMapping("/homeworkAdd")
	public String homeworkAdd(Homework homework,HttpServletRequest request,HttpSession session)
	{
	    int sdid = Integer.parseInt(request.getSession().getAttribute("sdid").toString());
		String hwtime=new SimpleDateFormat("yyyy-MM-dd hh:mm").format(new Date());
		homework.setHwtime(hwtime);
		homework.setSdid(sdid);
		homework.setHwflag("未批改");
		boolean flag= homeworkService.add(homework);
    	if(flag==true)
		{
			request.setAttribute("msg", "作业提交成功");
			return "student/homeworkAdd";
		}
		else
		{
		   request.setAttribute("msg", "作业提交失败!");
		   return "student/homeworkAdd";
		}
 	}
	@RequestMapping("/myhomework")
	public String myhomework(HttpServletRequest request)
	{
		int sdid = Integer.parseInt(request.getSession().getAttribute("sdid").toString());