src/com/controller/ClassesController.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.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.apache.ibatis.annotations.Param;


import com.util.PageUtil;
import com.util.UploadUtil;
import com.entity.Major;
import com.service.MajorService; 
import com.entity.College;
import com.service.CollegeService; 
import com.entity.Classes;
import com.service.ClassesService; 

@Controller
@RequestMapping("/qimu")
public class   ClassesController {
	private static final int rows = 10;
	@Autowired
	private MajorService majorService;
	@Autowired
	private CollegeService collegeService;
	@Autowired
	private ClassesService classesService;

	@RequestMapping("classesAdd")
	public String majorAdd(Classes classes,HttpServletRequest request,HttpSession session)
	{

		String where =" and claname='"+classes.getClaname()+"' and maid="+classes.getMaid()+"";
		int count=classesService.getTotal(where);
		if(count>0) 
		{
			request.setAttribute("msg", "班级已经存在，不能重复添加!");
			return "admin/classesManage";
		}
		else
		{
	
			boolean flag= classesService.add(classes);
			if(flag==true)
			{
				request.setAttribute("msg", "班级添加成功");
				return "admin/classesManage";
			}
			else
			{
			   request.setAttribute("msg", "班级添加失败!");
				return "admin/classesManage";