解决：Network ErrorAxiosError: Network Error at XMLHttpRequest.handleError

问题：Uncaught runtime errors：ERROR Network Error AxiosError: Network Error at XMLHttpRequest.handleError (webpack-internal:///./node_modules/axios/lib/adapters/xhr.js:160:14)

解决：在Controller类上加上@CrossOrigin注解

/**解决跨域问题*/
@CrossOrigin
@RestController
@RequestMapping("/score")
public class StudentController {
    @Autowired
    StudentService studnetService;

    @GetMapping("/list")
    public AjaxResult studentList(){
        List<Student> list = studnetService.studentList();
        return AjaxResult.success(list);
    }
}