java实现 elasticsearch es 的单个条件查询和多个条件查询，根据id更新指定字段

我会带着你远行 2024-03-30 12:53 2阅读 0赞

**先注入**

@Autowired
    private RestHighLevelClient restHighLevelClient;

## 1：ES根据单个条件查询 ##

public String searchEsAttachmentsLink(String riskId,String dataFrom){
    try {
    //添加条件，
        SearchSourceBuilder searchSourceBuilder = SearchSourceBuilder.searchSource()
                .size(1)
                .query(QueryBuilders.termQuery( name: "字段"， 值));
    //拼装
        SearchRequest searchRequest = new SearchRequest()
            .indices(索引)
            .source(searchSourceBuilder);
    //用ESClient执行search，得到响应结果
        SearchResponse searchResponse =         
        restHighLevelClient.search(searchRequest,RequestOption.DEFAULT);
    //根据自己返回的数据格式取值
        SearchHit[] hits = searchResponse.getHits().getHits();
        for (SearchHit hit : hits) {
    //取值
            hit.getSourceAsMap().get("字段");
        }
        
    
           return null;
    }

## 2:ES根据多个条件查询 ##

BoolOueryBuilder boolOueryBuilder = new BoolOueryBuilder();
    SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
    //用must拼接where条件
    boolQueryBuilder.must(QueryBuilders.termQuery("字段"，"值"))
                    .must(QueryBuilders.termQuery("字段","值");
    SearchRequest searchRequest = new SearchRequest()
                .indices(索引)
                .source(searchSourceBuilder);
    searchSourceBuilder.query(boolQueryBuilder);
    log.info("拼接后的请求参数: ",searchRequest);
    SearchResponse searchResponse = restHighLevelclient.search(searchRequest,RequestOptions .DEFAULT) ;
    log.info("查询后的结果: ",searchResponse);
    //取值
    SearchHitl] hits = searchResponse.getHits() .getHits();

## 3：ES根据id，局部更新文档 ##

UpdateRequest updateRequest = new UpdateRequest();
    updateRequest.index(索引);
    updateRequest.type("_doc");
    updateRequest.id(id);
    //添加where条件
    updateRequest.doc(
            XContentFactory.jsonBuilder(
                    .startobject()
                    .field( "字段"， "值")
                    .field( "字段"， "值")
                    .endobject()
        );
    //执行
    String resultUpdate = restHighlevelClient.update(updateRequest, Request0ptions.DEFAULT).getResult().tostring();