elasticsearch 基于spring api的基本操作

最新推荐文章于 2024-10-11 16:35:25 发布

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最新推荐文章于 2024-10-11 16:35:25 发布

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文章标签： elasticsearch es

本文链接：https://blog.youkuaiyun.com/dhtx_wzgl/article/details/85229709

本文详细介绍了如何使用Spring API对Elasticsearch进行批量更新、单个更新、聚合查询以及条件中带计算查询的操作。通过实例演示，帮助读者掌握Elasticsearch在实际应用中的基本技巧。

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转载请注明出处：https://blog.youkuaiyun.com/dhtx_wzgl/article/details/85229709

1、批量更新

    public void update() throws IOException {
        UpdateRequest updateRequest1 = new UpdateRequest().index(EsConstants.IMS_ORDER_INDEX)
                .type(EsConstants.IMS_ORDER_TYPE).id("o611426753592").doc(XContentFactory.jsonBuilder().startObject()
                        .field("amount", 1000)
                        .endObject());
        UpdateRequest updateRequest2 = new UpdateRequest().index(EsConstants.IMS_ORDER_INDEX)
                .type(EsConstants.IMS_ORDER_TYPE).id("o611426753592").doc(XContentFactory.jsonBuilder().startObject()
                        .field("productAmount", 700)
                        .endObject());
        UpdateQuery updateQuery1 = new UpdateQueryBuilder().withId("o611426753592")
                .withClass(OrderEsEntity.class).withUpdateRequest(updateRequest1).build();
        UpdateQuery updateQuery2 = new UpdateQueryBuilder().withId("o611426753592").withClass(OrderEsEntity.class)
                .withUpdateRequest(updateRequest2).build();
        elasticsearchTemplate.bulkUpdate(Lists.newArrayList(updateQuery1,updateQuery2));

    }

2、单个更新

    public void update() throws IOException {
        UpdateRequest updateRequest = new UpdateRequest().index(EsConstants.IMS_ORDER_INDEX)
                .type(EsConstants.IMS_ORDER_TYPE).id("o611426753592").doc(XContentFactory.jsonBuilder().startObject()
                        .field("productAmount", 1700)
                        .endObject());
        UpdateQuery updateQuery = new UpdateQueryBuilder().withId("o611426753592").withClass(OrderEsEntity.class)
                .withUpdateRequest(updateRequest).build();
        elasticsearchTemplate.update(updateQuery);
    }

3、聚合查询

 public void query() {
        SumAggregationBuilder sum = AggregationBuilders.sum("amountSum").field("amount");
        MaxAggregationBuilder max = AggregationBuilders.max("maxId").field("mid");
        SearchQuery searchQuery = new NativeSearchQueryBuilder()
                .withQuery(matchAllQuery())
                .addAggregation(max)
                .withIndices(EsConstants.IMS_ORDER_INDEX)
                .withTypes(EsConstants.IMS_ORDER_TYPE)
                .withSearchType(SearchType.DFS_QUERY_THEN_FETCH).build();
        double maxId = elasticsearchTemplate.query(searchQuery, response -> {
            InternalMax sum1 = (InternalMax) response.getAggregations().asList().get(0);
            return sum1.getValue();
        });
    }

4、条件中带计算查询

   @Test
    public void query() {
        SearchQuery searchQuery = new NativeSearchQueryBuilder()
                .withQuery(matchAllQuery())
                .withScriptField(new ScriptField("equals",
                        new Script("doc['amount'].value == doc['productAmount'].value")))
                .withIndices(EsConstants.IMS_ORDER_INDEX)
                .withTypes(EsConstants.IMS_ORDER_TYPE)
                .withSearchType(SearchType.DFS_QUERY_THEN_FETCH).build();
        List<OrderEsEntity> list = elasticsearchTemplate.queryForList(searchQuery, OrderEsEntity.class);
        log.info("result:{}",list.size());
    }