Examples with JSONException com.alibaba.fastjson2.JSONException used on opensource projects

Example 1 with JSONException

use of com.alibaba.fastjson2.JSONException in project witsTalk by XinSin-top.

the class ChatFrameHandler method channelRead0.

@Override
protected void channelRead0(ChannelHandlerContext channelHandlerContext, TextWebSocketFrame textWebSocketFrame) {
    /*
        此方法会在收到消息时调用
         */
    // 
    session = ChatStart.factory.openSession();
    chatDao = session.getMapper(ChatDao.class);
    // 获取传输通道
    Channel channel = channelHandlerContext.channel();
    // 获取通道ID
    ChannelId id = channel.id();
    // 获取消息文本内容
    String data = textWebSocketFrame.text();
    // 日志
    log.debug("receive message {} ip = {} id = {}", data, channel.remoteAddress().toString(), id.asShortText());
    // 将消息转换为json
    JSONObject json;
    try {
        json = JSON.parseObject(data);
    } catch (JSONException e) {
        // 打印错误
        e.printStackTrace();
        // 将syntax error发回至客户端
        sendMessage(id, "syntax error");
        return;
    }
    // 获取进行的操作
    String operating = json.getString("op");
    // 获取操作的参数
    JSONObject args = json.getJSONObject("args");
    String loginCommand = "login";
    String sendCommand = "send";
    String getMessageCommand = "get";
    String getMessageCountCommand = "count";
    String recallMessageCommand = "recall";
    // 登录操作
    if (Objects.equals(operating, loginCommand)) {
        Boolean r = JwtTokenUtils.isRight(args.getString("token"));
        log.debug("logon,r = {} ip = {} id = {}", r, channel.remoteAddress().toString(), id.asShortText());
        loginTable.put(id, r);
        sendMessage(id, r.toString());
    } else if (loginTable.get(id)) {
        // 如果操作为send
        if (Objects.equals(operating, sendCommand)) {
            // 获取发送者
            String sender = args.getString("sender");
            // 获取发送内容
            String content = args.getString("content");
            // 获取发送的类型
            String type = args.getString("type");
            // 日志
            log.info("sendMessage,sender = {} content = {} type = {}", sender, content, type);
            // 定义消息对象
            Message message = new Message(content, sender, type);
            // Dao层发送消息
            chatDao.sendMessage(message);
            session.commit();
            // 获取用户头像
            String b64 = chatDao.getUserHeadPortrait(sender);
            message.setBase64(b64);
            // 广播此消息
            String rawJson = JSON.toJSONString(message);
            sendToAll(rawJson);
        } else // 如果操作为getMessage
        if (Objects.equals(operating, getMessageCommand)) {
            // 获取id最小值
            Integer min = args.getInteger("min");
            // 获取id最大值
            Integer max = args.getInteger("max");
            // 日志
            log.info("getMessage min = {} max = {} ip = {} id = {}", min, max, channel.remoteAddress(), id.asShortText());
            // 从数据库获取消息
            ArrayList<Message> messages = chatDao.getMessage(min, max);
            // todo 更改为双标查询获取头像
            // 将这些消息转换为json并返回给客户端
            sendMessage(id, JSON.toJSONString(messages));
        } else // 如果操作为getMessageCount
        if (Objects.equals(operating, getMessageCountCommand)) {
            // 日志
            log.info("getMessageCount");
            // 从数据库获取消息数量
            Integer count = chatDao.getCount().get(0);
            sendMessage(id, count);
        } else if (Objects.equals(operating, recallMessageCommand)) {
            int i = args.getInteger("id");
            Message message = new Message(i);
            log.info("Recall Message message={}", message);
            chatDao.recall(message);
            session.commit();
            HashMap<String, String> resp = new HashMap<>(10);
            resp.put("op", "recall");
            resp.put("id", String.valueOf(i));
            sendToAll(JSON.toJSONString(resp));
        }
    } else {
        sendMessage(id, "You are not login!");
    }
    session.close();
}