IDEA看代码必备插件Call Graph 介绍及使用方法

Copy  /**
     * {@code POST  /admin/users}  : Creates a new user.
     * <p>
     * Creates a new user if the login and email are not already used, and sends an
     * mail with an activation link.
     * The user needs to be activated on creation.
     *
     * @param userDTO the user to create.
     * @return the {@link ResponseEntity} with status {@code 201 (Created)} and with body the new user, or with status {@code 400 (Bad Request)} if the login or email is already in use.
     * @throws URISyntaxException if the Location URI syntax is incorrect.
     * @throws BadRequestAlertException {@code 400 (Bad Request)} if the login or email is already in use.
     */
    @PostMapping("/users")
    @PreAuthorize("hasAuthority(\"" + AuthoritiesConstants.ADMIN + "\")")
    public ResponseEntity<User> createUser(@Valid @RequestBody AdminUserDTO userDTO) throws URISyntaxException {
        log.debug("REST request to save User : {}", userDTO);

        if (userDTO.getId() != null) {
            throw new BadRequestAlertException("A new user cannot already have an ID", "userManagement", "idexists");
            // Lowercase the user login before comparing with database
        } else if (userRepository.findOneByLogin(userDTO.getLogin().toLowerCase()).isPresent()) {
            throw new LoginAlreadyUsedException();
        } else if (userRepository.findOneByEmailIgnoreCase(userDTO.getEmail()).isPresent()) {
            throw new EmailAlreadyUsedException();
        } else {
            User newUser = userService.createUser(userDTO);
            mailService.sendCreationEmail(newUser);
            return ResponseEntity
                .created(new URI("/api/admin/users/" + newUser.getLogin()))
                .headers(HeaderUtil.createAlert(applicationName, "userManagement.created", newUser.getLogin()))
                .body(newUser);
        }
    }