解决：elasticsearch 更新报错：The number of object passed must be even but was [1]

Posted 2022-12-04 微风--轻许--

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1. 错误的代码写法：

 @Autowired
    private ElasticsearchOperations esOperations; 


public void updateAxxxData(List<AxxxModel> axxxs) 

        for (AxxxModel al : axxxs) 
            UpdateQuery update = new UpdateQuery();
            update.setIndexName("coll_axxxm_sxxxxxxx_es");
            update.setType("coll_axxxm_sxxxxxxx_es");
            UpdateRequest request = new UpdateRequest();      
            request.doc(al);
            update.setUpdateRequest(request);
            esOperations.update(update);
        
    

2. 运行后报错：

  java.lang.IllegalArgumentException: The number of object passed must be even but was [1]

3. 报错行为：  request.doc(al);

4. 把对象改为用Map，循环中代码调整为：

            UpdateQuery update = new UpdateQuery();
            update.setIndexName("coll_axxxm_sxxxxxxx_es");
            update.setType("coll_axxxm_sxxxxxxx_es");
            UpdateRequest request = new UpdateRequest();

            Map<String, Object> alMap = Maps.newHashMap();
            alMap.put("xxx_time", al.getXxx_time());
            alMap.put("xxx_id", al.getXxx_id());
            alMap.put("fxxx_id", al.getFxxx_id());
              
            request.doc(alMap);
            update.setUpdateRequest(request);
            esOperations.update(update);

5. 以上报错即消失。