es报错：org.elasticsearch.action.ActionRequestValidationException: Validation Failed: 1: no requests ad

org.elasticsearch.action.ActionRequestValidationException: Validation Failed: 1: no requests added;
    at org.elasticsearch.action.ValidateActions.addValidationError(ValidateActions.java:29)
    at org.elasticsearch.action.bulk.BulkRequest.validate(BulkRequest.java:476)
    at org.elasticsearch.action.TransportActionNodeProxy.execute(TransportActionNodeProxy.java:52)
    at org.elasticsearch.client.transport.support.InternalTransportClient$1.doWithNode(InternalTransportClient.java:109)
    at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:205)
    at org.elasticsearch.client.transport.support.InternalTransportClient.execute(InternalTransportClient.java:106)
    at org.elasticsearch.client.support.AbstractClient.bulk(AbstractClient.java:167)
    at org.elasticsearch.client.transport.TransportClient.bulk(TransportClient.java:370)
    at org.elasticsearch.action.bulk.BulkRequestBuilder.doExecute(BulkRequestBuilder.java:166)
    at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:91)
    at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:65)
    at org.elasticsearch.action.ActionRequestBuilder.get(ActionRequestBuilder.java:73)
    at com.easypec.dataValidate.util.EsUtil.bulkIndex(EsUtil.java:263)
    at com.easypec.dataValidate.client.ValidateLog.addItemToEs(ValidateLog.java:82)
    at com.easypec.dataValidate.client.ValidateLog.main(ValidateLog.java:61)
解决办法：

IndexRequest 中需要设置主键   indexRequest.id(UUID.randomUUID()+"");// 设置主键加上这段代码把请求的放入 BulkRequestBuilder 中  prepareBulk.add(indexRequest);

/**
    * 批量入库
    * 集合插入到es中
    * @param list
    */  

public  void bulkIndex(List<EsNginxLogEntity> list) {
      try {
         logger.info("bulkIndex {} start");
         BulkRequestBuilder prepareBulk = getTransportClient().prepareBulk();
         //循环集合
         for (int i = 0; i < list.size(); i++) {

            EsNginxLogEntity esn = list.get(i);
            IndexRequest indexRequest = new IndexRequest(indexName, indexType);
            HashMap<String, Object> hashMap = new HashMap<String, Object>();
//          hashMap.put("domain", esn.getDomain());
            String uuid=UUID.randomUUID().toString();
            if(esn.getCount()==0){
               hashMap.put("count", esn.getCount());
               hashMap.put("validate_type",esn.getType());
            }else{
               hashMap.put("ip", esn.getIp());
               hashMap.put("local_time", esn.getLocal_time());
               hashMap.put("rawmessage", esn.getRawMessage());
               hashMap.put("count", esn.getCount());
               hashMap.put("validate_type",esn.getType());
            }
            indexRequest.source(hashMap);
            indexRequest.id(uuid);
            prepareBulk.add(indexRequest);
            if (i % 2000 == 0) {
               BulkResponse bulkResponse = prepareBulk.get();
               check(bulkResponse);
            }
         }
         //批量插入
         BulkResponse bulkResponse = prepareBulk.get();
         check(bulkResponse);
      } catch (Exception e) {
         e.printStackTrace();
      }
   }