paascloud/paascloud-master · warning · UacBizException

UAC10011012

UAC10011012

Error message

登录名已存在

What it means

UAC10011012 is thrown during user registration (register) after uacUserMapper.selectCount on a UacUser template with the requested loginName returns > 0, meaning an account with that login name already exists. Registration is rejected with '登录名已存在' to preserve login-name uniqueness.

Solutions

1. Check availability first (the validate endpoint or SELECT COUNT(*) FROM uac_user WHERE login_name = ?) and pick a different loginName.
2. If it's your own duplicate, log in or use password reset instead of registering again.
3. Clean up orphaned/partial registrations from failed test runs before re-registering.
4. Add a DB UNIQUE constraint on login_name as a backstop against race-condition duplicates.

Example fix

// before
UacUser q = new UacUser(); q.setLoginName(registerDto.getLoginName());
if (uacUserMapper.selectCount(q) > 0) { throw new UacBizException(ErrorCodeEnum.UAC10011012); }
// after (client-side pre-check)
if (!uacUserService.checkLoginNameAvailable(registerDto.getLoginName())) {
    return response("login name already taken, choose another");
}

UacUser q = new UacUser();
q.setLoginName(requestedLoginName.trim());
if (uacUserMapper.selectCount(q) > 0) {
    return Result.fail("login name already taken, choose another");
}

try {
    uacUserService.register(registerDto);
} catch (UacBizException e) {
    if ("UAC10011012".equals(e.getCode())) { return Result.fail(409, "login name already exists"); }
    throw e;
}

When it happens

Trigger: Submitting the registration form with a loginName already taken; retrying a registration that partially succeeded earlier; case variations of an existing login name on case-insensitive collations; concurrent registrations of the same loginName racing past the check.

Common situations: Popular usernames already claimed; users forgetting they already registered; test scripts re-running registration with fixed credentials; environments sharing a database with different apps.

Related errors

• UAC10011013
• UAC10011019
• UAC10011020
• errorInfo
• outId不能为空

AI-assisted analysis of paascloud/paascloud-master@781281a950 (2026-09-10). Data as JSON: /api/errors/305b5459e4d9e6db. Report an issue: GitHub.

Appendix: source

Thrown at paascloud-provider/paascloud-provider-uac/src/main/java/com/paascloud/provider/service/impl/UacUserServiceImpl.java:960

		return uacUserMenuService.batchSave(uacUserMenuList);
	}

	private void validateRegisterInfo(UserRegisterDto registerDto) {
		String mobileNo = registerDto.getMobileNo();

		Preconditions.checkArgument(!StringUtils.isEmpty(registerDto.getLoginName()), ErrorCodeEnum.UAC10011007.msg());
		Preconditions.checkArgument(!StringUtils.isEmpty(registerDto.getEmail()), ErrorCodeEnum.UAC10011018.msg());
		Preconditions.checkArgument(!StringUtils.isEmpty(mobileNo), "手机号不能为空");
		Preconditions.checkArgument(!StringUtils.isEmpty(registerDto.getLoginPwd()), ErrorCodeEnum.UAC10011014.msg());
		Preconditions.checkArgument(!StringUtils.isEmpty(registerDto.getConfirmPwd()), ErrorCodeEnum.UAC10011009.msg());
		Preconditions.checkArgument(!StringUtils.isEmpty(registerDto.getRegisterSource()), "验证类型错误");
		Preconditions.checkArgument(registerDto.getLoginPwd().equals(registerDto.getConfirmPwd()), "两次密码不一致");

		UacUser uacUser = new UacUser();
		uacUser.setLoginName(registerDto.getLoginName());
		int count = uacUserMapper.selectCount(uacUser);
		if (count > 0) {
			throw new UacBizException(ErrorCodeEnum.UAC10011012);
		}

		uacUser = new UacUser();
		uacUser.setMobileNo(registerDto.getMobileNo());
		count = uacUserMapper.selectCount(uacUser);
		if (count > 0) {
			throw new UacBizException(ErrorCodeEnum.UAC10011013);
		}

		uacUser = new UacUser();
		uacUser.setEmail(registerDto.getEmail());
		count = uacUserMapper.selectCount(uacUser);
		if (count > 0) {
			throw new UacBizException(ErrorCodeEnum.UAC10011019);
		}

	}
}

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