复制DataStream<String> userData = kafkaData.map(new RichMapFunction<String,监控 String>() {              Counter mapDataNub;              @Override              public void open(Configuration parameters) throws Exception {                  mapDataNub=  getRuntimeContext()                         .getMetricGroup()                         .addGroup("flink_test_metric")                         .counter("mapDataNub");              }              @Override              public String map(String s)  {                  String s1 ="";                  try {                      String[] split = s.split(",");                      long userID = Long.parseLong(split[0]);                      long itemId = Long.parseLong(split[1]);                      long categoryId = Long.parseLong(split[2]);                      String behavior = split[3];                      long timestamp = Long.parseLong(split[4]);                      Map map = new HashMap();                      map.put("userID", userID);                      map.put("itemId", itemId);                      map.put("categoryId", categoryId);                      map.put("behavior", behavior);                      map.put("timestamp", timestamp);                      s1 = JSON.toJSONString(map);                      mapDataNub.inc();                      System.out.println("数据"+map.toString());                  } catch (NumberFormatException e) {                      e.printStackTrace();                  }                  return  s1;              }  1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.