docs: public void doAdd(@FormGroup("canalInfo") Group canalInfo,
                        @FormGroup("canalParameterInfo") Group canalParameterInfo,
                        @FormField(name = "formCanalError", group = "canalInfo") CustomErrors err,
                        @FormField(name = "formHeartBeatError", group = "canalParameterInfo") CustomErrors heartBeatErr,
                        Navigator nav) throws Exception {
          Canal canal = new Canal();
          CanalParameter parameter = new CanalParameter();
          canalInfo.setProperties(canal);
          canalParameterInfo.setProperties(parameter);
  
          String zkClustersString = canalParameterInfo.getField("zkClusters").getStringValue();
          String[] zkClusters = StringUtils.split(zkClustersString, ";");
          parameter.setZkClusters(Arrays.asList(zkClusters));
  
          Long zkClusterId = canalParameterInfo.getField("autoKeeperClusterId").getLongValue();
          parameter.setZkClusterId(zkClusterId);
          canal.setCanalParameter(parameter);
  
          String dbAddressesString = canalParameterInfo.getField("groupDbAddresses").getStringValue();
          // 解析格式：
          // 127.0.0.1:3306:MYSQL,127.0.0.1:3306:ORACLE;127.0.0.1:3306,127.0.0.1:3306;
          // 第一层的分号代表主备概念，,第二层逗号代表分组概念
          if (StringUtils.isNotEmpty(dbAddressesString)) {
              List<List<DataSourcing>> dbSocketAddress = new ArrayList<List<DataSourcing>>();
              String[] dbAddresses = StringUtils.split(dbAddressesString, ";");
              for (String dbAddressString : dbAddresses) {
                  List<DataSourcing> groupDbSocketAddress = new ArrayList<DataSourcing>();
                  String[] groupDbAddresses = StringUtils.split(dbAddressString, ",");
                  for (String groupDbAddress : groupDbAddresses) {
                      String strs[] = StringUtils.split(groupDbAddress, ":");
                      InetSocketAddress address = new InetSocketAddress(strs[0].trim(), Integer.valueOf(strs[1]));
                      SourcingType type = parameter.getSourcingType();
                      if (strs.length > 2) {
                          type = SourcingType.valueOf(strs[2]);
                      }
                      groupDbSocketAddress.add(new DataSourcing(type, address));
                  }
                  dbSocketAddress.add(groupDbSocketAddress);
              }
  
              parameter.setGroupDbAddresses(dbSocketAddress);
          }
  
          String positionsString = canalParameterInfo.getField("positions").getStringValue();
          if (StringUtils.isNotEmpty(positionsString)) {
              String positions[] = StringUtils.split(positionsString, ";");
              parameter.setPositions(Arrays.asList(positions));
          }
  
          if (parameter.getDetectingEnable() && StringUtils.startsWithIgnoreCase(parameter.getDetectingSQL(), "select")) {
              heartBeatErr.setMessage("invaliedHeartBeat");
              return;
          }
  
          try {
              canalService.create(canal);
          } catch (RepeatConfigureException rce) {
              err.setMessage("invalidCanal");
              return;
          }
  
          if (parameter.getSourcingType().isMysql() && parameter.getSlaveId() == null) {
              parameter.setSlaveId(10000 + canal.getId());
              // 再次更新一下slaveId
              try {
                  canalService.modify(canal);
              } catch (RepeatConfigureException rce) {
                  err.setMessage("invalidCanal");
                  return;
              }
          }
  
          nav.redirectTo(WebConstant.CANAL_LIST_LINK);
      }