佳佳的博客

Appearance

Spring Boot & Elasticsearch 自定义查询结果排序 ​

🏷️ Spring Boot Elasticsearch

记一下调查查询结果排序的结果，以供今后参考。

首先是参考这篇博客使用 FunctionScoreQuery 实现自定义分值的方案。

java
queryBuilder.must(
    QueryBuilders.boolQuery()
        .should(QueryBuilders
            .functionScoreQuery(
                QueryBuilders.matchQuery(NovelField.TITLE, parameter.getKeyword()),
                ScoreFunctionBuilders.weightFactorFunction(1000)
            ))
        .should(QueryBuilders
            .functionScoreQuery(
                QueryBuilders.matchQuery(NovelField.AUTHOR, parameter.getKeyword()),
                ScoreFunctionBuilders.weightFactorFunction(500)
            ))
        .should(QueryBuilders
            .functionScoreQuery(
                QueryBuilders.matchQuery(NovelField.BRIEF, parameter.getKeyword()),
                ScoreFunctionBuilders.weightFactorFunction(10)
            ))
        .should(QueryBuilders
            .functionScoreQuery(
                QueryBuilders.matchQuery(NovelField.MAJOR_CHARACTERS, parameter.getKeyword()),
                ScoreFunctionBuilders.weightFactorFunction(100)
            ))
);

第二种是查看之前的笔记，可以通过修改 boost 调整查询权重，示例如下：

java
queryBuilder.must(
    QueryBuilders.boolQuery()
        .should(QueryBuilders.matchQuery(NovelField.TITLE, parameter.getKeyword()).boost(1000))
        .should(QueryBuilders.matchQuery(NovelField.AUTHOR, parameter.getKeyword()).boost(500))
        .should(QueryBuilders.matchQuery(NovelField.BRIEF, parameter.getKeyword()).boost(10))
        .should(QueryBuilders.matchQuery(NovelField.MAJOR_CHARACTERS, parameter.getKeyword()).boost(100))
);