今天完成的事情：SSM写的差不多了 有BUG 没改完

Json Tag-lib 生成假数据没问题

  /**
        * json假数据
        */

        @RequestMapping("selectStudent")
        public String selectAll(Model model) {
        List<Student> students = studentService.findAllStudent();
model.addAttribute("code", "200");
model.addAttribute("message", "传递成功");
model.addAttribute("students", students);
return "json";
}

@ResponseBody
@RequestMapping(value = "/select", method = RequestMethod.GET)
public String selectAllStudent(Model model) {
try {
List<Student> students = studentService.findAllStudent();
  model.addAttribute("code", 200);
  model.addAttribute("students", students);
  return "json";
  } catch (Exception e) {
  model.addAttribute("code", 201);
  return "json";
  }

写完Controller

        @Controller
        @RequestMapping("/student")
        public class HelloWorldController {
        @Autowired
        StudentService studentService;
        private static final Logger log = LogManager.getLogger(HelloWorldController.class);

        /**
        * 跳转到学生添加界面
        */
        @RequestMapping(value = "/toAddStudent")
        public String toAddStudent() {
        return "addStudent";
        }

        /**
        * 添加学生
        */

        @RequestMapping("addStudent")
        public String addStudent( Model model, Student student) {
        if (student != null) {
        studentService.insertStudent(student);
        }
        return "redirect:/student/findAllStudent";
        }

        /**
        * 更新学生数据
        */
        @RequestMapping("updateStudent")
        public String updateStudent(Model model, HttpServletRequest request,
        String name,@Validated Student student,BindingResult result) {
        if (name.length()==0&& result.hasErrors()) {
        List<ObjectError> errors = result.getAllErrors();
for (ObjectError error : errors) {
log.error(error.getDefaultMessage());
} //将错误信息传至页面
model.addAttribute("allErrors",errors);
log.error("执行了if语句块");
return "/error";
}else if (studentService.updateStudent(student)){
student=studentService.findStudentById(student.getId());
model.addAttribute("student",student);
return "redirect:/student/findAllStudent";
}
return "redirect:/student/findAllStudent";
}

/**
* 查询单个学生
*/
@RequestMapping("findStudent")
public String findStudent(long id, Model model) {
model.addAttribute("student", studentService.findStudentById(id));
return "editStudent";
}

/**
* 根据ID删除学生
*/
@RequestMapping(value = "/deleteStudent/id={id}")
public String deleteStudent(@PathVariable long id, @Validated Student student, BindingResult result) {
studentService.deleteStudent(id);
log.info(id);
return "redirect:/student/findAllStudent";
}

/**
* 查询学生所有数据
*/
@RequestMapping(value = "findAllStudent" ,method =RequestMethod.GET)
public String findAllStudent(Model model,@RequestParam(defaultValue = "1",required = true,
value = "pageNo") Integer pageNo) {
//每页显示记录数为5
Integer pageSize=5;
PageHelper.startPage(pageNo,pageSize);
List<Student> students = studentService.findAllStudent();
  PageInfo<Student> pageInfo =new PageInfo<Student>(students);
    model.addAttribute("pageInfo", pageInfo);
    return "allStudent";
    }

明天计划的事情：部署服务器 
遇到的问题：许多BUG
收获：改BUG