fix:User_Logout_NPE

[cmgyqjj]

For bug: NullPointerException

add an online check in the logout process to prevent a NullPointerException (NPE)

[crossoverJie]

Why not directly modify the return value of loadUserInfoByUserId to Optional<CIMUserInfo>, and then call the offLine function in ifPresent?

[cmgyqjj]

Absolutely, It is a good idea that it will be midified right now.

[crossoverJie]

Additionally, for this scenario, we should add a new test case in ClientTest, like this:

    @Test
    public void testIncorrectUser() throws Exception {
        super.starSingleServer();
        super.startRoute();
        String routeUrl = "http://localhost:8083";
        String cj = "xx";
        long id = 100L;
        var auth1 = ClientConfigurationData.Auth.builder()
                .userId(id)
                .userName(cj)
                .build();

        Client client1 = Client.builder()
                .auth(auth1)
                .routeUrl(routeUrl)
                .build();
        TimeUnit.SECONDS.sleep(3);

        Assertions.assertDoesNotThrow(client1::close);

        super.stopSingle();
    }

[cmgyqjj]

Additionally, for this scenario, we should add a new test case in ClientTest, like this:

    @Test
    public void testIncorrectUser() throws Exception {
        super.starSingleServer();
        super.startRoute();
        String routeUrl = "http://localhost:8083";
        String cj = "xx";
        long id = 100L;
        var auth1 = ClientConfigurationData.Auth.builder()
                .userId(id)
                .userName(cj)
                .build();

        Client client1 = Client.builder()
                .auth(auth1)
                .routeUrl(routeUrl)
                .build();
        TimeUnit.SECONDS.sleep(3);

        Assertions.assertDoesNotThrow(client1::close);

        super.stopSingle();
    }

Okay, this test case will be added in this pull request.

[crossoverJie]

It is not recommended to directly use the java.util.Optional#get method, as it defeats the purpose of using Optional. It is suggested that similar modifications be made in all relevant places.

        cimUserInfo.ifPresent(userInfo -> {
            String url = "http://" + cimServerResVO.getIp() + ":" + cimServerResVO.getHttpPort();
            SendMsgReqVO vo = new SendMsgReqVO(userInfo.getUserName() + ":" + groupReqVO.getMsg(), groupReqVO.getUserId());
            serverApi.sendMsg(vo, url);
        });

[cmgyqjj]

The previously incorrect usage of the non-standard java.util.Optional#get method has been revised upon our re-examination.

[crossoverJie]

Suggested change

	cimUserInfo.ifPresentOrElse(set::add, () -> {});
	cimUserInfo.ifPresent(set::add);

[crossoverJie]

Thanks for the contribution