StudentManager

package com.school.manager.controller; import com.school.manager.entity.Clazz; import com.school.manager.entity.Student; import com.school.manager.service.ClazzService; import com.school.manager.service.StudentService; import com.school.manager.util.StringUtil; import net.sf.json.JSONArray; import org.apache.commons.lang.StringUtils; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; 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.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.servlet.ModelAndView; import com.school.manager.page.Page; import javax.servlet.http.HttpServletRequest; import java.io.File; import java.io.IOException; import java.util.*; /** * 学生Controller * @auther TR */ @RequestMapping("/student") @Controller public class StudentController { private static final Log log = LogFactory.getLog(StudentController.class); @Autowired private ClazzService clazzService; @Autowired private StudentService studentService; // 新增的图片类型白名单 private static final Set<String> ALLOWED_EXTENSIONS = new HashSet<>(Arrays.asList("jpg", "png", "gif", "jpeg")); @Autowired private Student student; /** * 学生列表页面 */ @RequestMapping(value = "/list", method = RequestMethod.GET) public ModelAndView list(ModelAndView model) { model.setViewName("student/student_list"); List<Clazz> clazzList = clazzService.findAll(); model.addObject("clazzList", clazzList); model.addObject("clazzListJson", JSONArray.fromObject(clazzList)); return model; } /** * 获取学生列表 */ @RequestMapping(value = "/get_list", method = {RequestMethod.POST}) @ResponseBody public Map<String, Object> getList(@RequestParam(value = "name", required = false, defaultValue = "") String name, @RequestParam(value = "clazzId", required = false, defaultValue = "") Long clazzId, HttpServletRequest request, Page page) { Map<String, Object> ret = new HashMap<>(); Map<String, Object> queryMap = new HashMap<>(); queryMap.put("username", "%" + name + "%"); Object attribute = request.getSession().getAttribute("userType"); if ("2".equals(attribute.toString())) { //说明是学生 Student loginStudent = (Student) request.getSession().getAttribute("user"); queryMap.put("username", "%" + loginStudent.getUsername() + "%"); } if (clazzId != null) { queryMap.put("clazzId", clazzId); } queryMap.put("offset", page.getOffset()); queryMap.put("pageSize", page.getRows()); ret.put("rows", studentService.findList(queryMap)); ret.put("total", studentService.getTotal(queryMap)); return ret; } /** * 添加学生的操作 */ @RequestMapping(value = "/add", method = {RequestMethod.POST}) @ResponseBody public Map<String, String> add(Student student) { Map<String, String> ret = new HashMap<String, String>(); if (StringUtils.isEmpty(student.getUsername())) { ret.put("type", "error"); ret.put("msg", "学生姓名不能为空"); return ret; } if (StringUtils.isEmpty(student.getPassword())) { ret.put("type", "error"); ret.put("msg", "学生登陆密码不能为空"); return ret; } if (student.getClazzId() == null) { ret.put("type", "error"); ret.put("msg", "请选择所属班级"); return ret; } if (isExist(student.getUsername(), null)) { ret.put("type", "error"); ret.put("msg", "该学生姓名已经存在"); return ret; } student.setSn(StringUtil.generatesn("S", "")); if (studentService.add(student) <= 0) { ret.put("type", "error"); ret.put("msg", "学生添加失败"); return ret; } ret.put("type", "success"); ret.put("msg", "学生添加成功"); return ret; } private boolean isExist(String username, Long id) { Student student = studentService.findByUserName(username); if (student != null) { return true; } return false; } @RequestMapping(value = "/upload_photo", method = RequestMethod.POST) @ResponseBody public Map<String, String> uploadPhoto( @RequestParam("photo") MultipartFile photo, HttpServletRequest request) { Map<String, String> ret = new HashMap<>(); if (photo.isEmpty()) { ret.put("type", "error"); ret.put("msg", "请选择文件"); return ret; } if (photo.getSize() > 10485760) { // 10MB ret.put("type", "error"); ret.put("msg", "文件大于10M，请上传小于10M的图片"); return ret; } String originalFilename = photo.getOriginalFilename(); String suffix = originalFilename.substring(originalFilename.lastIndexOf(".") + 1).toLowerCase(); if (!ALLOWED_EXTENSIONS.contains(suffix)) { ret.put("type", "error"); ret.put("msg", "文件格式不正确，请上传jpg,png,gif,jpeg格式的文件"); return ret; } String savePath = request.getServletContext().getRealPath("\\upload\\"); File saveDir = new File(savePath); if (!saveDir.exists()) { saveDir.mkdirs(); } String filename = System.currentTimeMillis() + "." + suffix; try { photo.transferTo(new File(saveDir, filename)); ret.put("type", "success"); ret.put("msg", "图片上传成功"); // 使用统一路径分隔符 ret.put("src", request.getContextPath() + "\\upload\\" + filename); } catch (IOException e) { log.error("文件上传失败", e); ret.put("type", "error"); ret.put("msg", "图片上传失败"); } return ret; } /** * 修改学生信息的操作 */ @RequestMapping(value = "/edit", method = RequestMethod.POST) @ResponseBody public Map<String, String> edit(Student student) { Map<String, String> ret = new HashMap<String, String>(); if (StringUtils.isEmpty(student.getUsername())) { ret.put("type", "error"); ret.put("msg", "学生姓名不能为空"); return ret; } if (StringUtils.isEmpty(student.getPassword())) { ret.put("type", "error"); ret.put("msg", "学生密码不能为空"); return ret; } if (student.getClazzId() == null) { ret.put("type", "error"); ret.put("msg", "请选择所属班级"); return ret; } if ((isExist(student.getUsername(), student.getId()))) { ret.put("type", "error"); ret.put("msg", "该姓名已经存在"); return ret; } student.setSn(StringUtil.generatesn("S", "")); if (studentService.edit(student) <= 0) { ret.put("type", "error"); ret.put("msg", "学生修改失败");