一、flutter 端集成 1、我这边写的登录代码

2、我是把源码的这部分直接复制黏贴到我这个项目里面，原封不动

二、SpringBoot 端集成 1、几乎原封不动抄袭你家的登录IM 源码 ` @Override public LoginImRespDTO loginIm(LoginImReqDTO imReqDTO) { LoginImRespDTO imRespDTO = new LoginImRespDTO(); try { //使用电话号码查询用户信息。 IMResult userResult = UserAdmin.getUserByMobile(imReqDTO.getPhoneCode() + imReqDTO.getPhoneNumber());

        //如果用户信息不存在，创建用户
        InputOutputUserInfo user;
        boolean isNewUser = false;
        if (userResult.getErrorCode() == ErrorCode.ERROR_CODE_NOT_EXIST) {
            log.info("User not exist, try to create");

            // 创建 IM 用户
            user = new InputOutputUserInfo();
            user.setUserId(imReqDTO.getUserId());
            user.setName(imReqDTO.getNickname());
            user.setDisplayName(imReqDTO.getNickname());
            user.setPortrait(imReqDTO.getAvatar());
            user.setMobile(imReqDTO.getPhoneCode() + imReqDTO.getPhoneNumber());
            IMResult<OutputCreateUser> userIdResult = UserAdmin.createUser(user);
            if (userIdResult.getErrorCode() == ErrorCode.ERROR_CODE_SUCCESS) {
                user.setUserId(userIdResult.getResult().getUserId());
                isNewUser = true;
            } else {
                log.info("IM Server Create user failure {}", userIdResult.code);
                return null;
            }

        } else if (userResult.getCode() != 0) {
            log.error("IM Server Get user failure {}", userResult.code);
            return null;
        } else {
            user = userResult.getResult();
        }
        imRespDTO.setImUserId(user.getUserId());

        // 获取手机号获取 IM token
        IMResult<OutputGetIMTokenData> tokenResult = UserAdmin.getUserToken(user.getUserId(), imReqDTO.getClientId(), imReqDTO.getPlatform());
        if (tokenResult.getErrorCode() != ErrorCode.ERROR_CODE_SUCCESS) {
            log.error("Get IM token failure {}", tokenResult.code);
            return null;
        }
        OutputGetIMTokenData result = tokenResult.getResult();
        imRespDTO.setImToken(result.getToken());

        if (isNewUser) {
            if (!org.springframework.util.StringUtils.isEmpty(imConfig.getWelcomeForNewUser())) {
                sendTextMessage(imConfig.adminUserId, user.getUserId(), imConfig.getWelcomeForNewUser());
            }

            if (imConfig.isNewUserRobotFriend() && !org.springframework.util.StringUtils.isEmpty(imConfig.getRobotFriendId())) {
                RelationAdmin.setUserFriend(user.getUserId(), imConfig.getRobotFriendId(), true, null);
                if (!org.springframework.util.StringUtils.isEmpty(imConfig.getRobotWelcome())) {
                    sendTextMessage(imConfig.getRobotFriendId(), user.getUserId(), imConfig.getRobotWelcome());
                }
            }

            if (!org.springframework.util.StringUtils.isEmpty(imConfig.getNewUserSubscribeChannelId())) {
                GeneralAdmin.subscribeChannel(imConfig.getBackUserSubscribeChannelId(), user.getUserId());
            }
        } else {
            if (!org.springframework.util.StringUtils.isEmpty(imConfig.getWelcomeForBackUser())) {
                sendTextMessage(imConfig.adminUserId, user.getUserId(), imConfig.getWelcomeForBackUser());
            }
            if (!org.springframework.util.StringUtils.isEmpty(imConfig.getBackUserSubscribeChannelId())) {
                IMResult<OutputBooleanValue> booleanValueIMResult = GeneralAdmin.isUserSubscribedChannel(user.getUserId(), imConfig.getNewUserSubscribeChannelId());
                if (booleanValueIMResult != null && booleanValueIMResult.getErrorCode() == ErrorCode.ERROR_CODE_SUCCESS && !booleanValueIMResult.getResult().value) {
                    GeneralAdmin.subscribeChannel(imConfig.getBackUserSubscribeChannelId(), user.getUserId());
                }
            }
        }

        if (!org.springframework.util.StringUtils.isEmpty(imConfig.getPromptText())) {
            sendTextMessage(imConfig.adminUserId, user.getUserId(), imConfig.getPromptText());
        }

        if (!org.springframework.util.StringUtils.isEmpty(imConfig.getImageMsgUrl()) && !org.springframework.util.StringUtils.isEmpty(imConfig.getImageMsgBase64Thumbnail())) {
            sendImageMessage(imConfig.adminUserId, user.getUserId(), imConfig.getImageMsgUrl(), imConfig.getImageMsgBase64Thumbnail());
        }
    } catch (Exception ex) {
        log.error("Login IM Server fail" + ex);
        return null;
    }

    return imRespDTO;
}

` 三、总结 在应用登录后，能成功连接上 IM 服务，最后出现如下问题（注：直接运行你家的flutter源码，后端服务，能正常显示）。麻烦看下，是哪个环节出了问题，谢谢