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

Love The Way You Lie 2023-02-11 03:16 161阅读 0赞

[前些天发现了一个巨牛的人工智能学习网站，通俗易懂，风趣幽默，忍不住分享一下给大家。点击跳转到教程。][Link 1]

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。

[Link 1]: https://www.captainai.net/jiangyu1013/