springBoot集成es（三）spring-data集成es与常用查询操作

ゝ一世哀愁。 2022-11-22 05:19 384阅读 0赞

接着上一篇博客，看下spring-data集成es的常用查询操作（这里只写serviceImpl部分代码）：ElasticsearchRepository使用QueryBuilder构造查询条件 ：Iterable<T> search(QueryBuilder var1);

官网介绍：[https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-high-query-builders.html][https_www.elastic.co_guide_en_elasticsearch_client_java-rest_current_java-rest-high-query-builders.html]

一、单条件查询：

1、matchAllQuery 查询所用：相当于sql中的select \* from 。当然，除了使用QueryBuilder，ElasticsearchRepository的findAll方法也是查询所有。

//查询全部列表，方法1
        @Override
        public Iterable<UserDTO> getAll() {
            return userRepository.findAll();
        }

//查询全部列表，方法2
        @Override
        public Iterable<UserDTO> getAll1() {
            QueryBuilder queryBuilder = QueryBuilders.matchAllQuery();
            Iterable<UserDTO> iterable = userRepository.search(queryBuilder);
            return iterable;
        }

2、matchQuery 匹配查询：matchQuery可以简单理解为mysql中的like，因为在elasticsearch中使用matchQuery查询时，他会对查询的field进行分词。当然我们进行查询的这个field的mapping必须是text类型。

//条件查询
        @Override
        public List<UserDTO> getByName(String name) {
            List<UserDTO> list = new ArrayList<>();
            QueryBuilder queryBuilder = QueryBuilders.matchQuery("name", name);
            Iterable<UserDTO> iterable = userRepository.search(queryBuilder);
            iterable.forEach(e->list.add(e));
            return list;
        }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70][]

3、matchPhraseQuery短语搜索：相当于sql的=查询，与matchQuery的区别在于，matchPhraseQuery查询不会被分词，而是直接以一个短语的形式查询，而如果你在创建索引所使用的field的value中没有这么一个短语（顺序无差，且连接在一起），那么将查询不出任何结果。

//条件短语查询
        @Override
        public List<UserDTO> getByNamePhrase(String name) {
            List<UserDTO> list = new ArrayList<>();
            QueryBuilder queryBuilder = QueryBuilders.matchPhraseQuery("name", name);
            Iterable<UserDTO> iterable = userRepository.search(queryBuilder);
            iterable.forEach(e->list.add(e));
            return list;
        }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70 1][]

4、termQuery等值搜索：相当于sql语句中的“=”，使用这个搜索一般是对索引中keyword的mapping进行等值搜索。term query 属于过滤器查询，可以处理数字（numbers）、布尔值（Booleans）、日期（dates）以及文本（text）。

（1）数字：

单个：

QueryBuilder qb1 = QueryBuilders.termQuery("${fieldName}", "${fieldValue}");

批量：

QueryBuilder qb1 = QueryBuilders.termsQuery("${fieldName}", "${fieldValues}");

//根据年龄查询，等值查询
        @Override
        public List<UserDTO> termByAge(String age) {
            List<UserDTO> list = new ArrayList<>();
            QueryBuilder queryBuilder = QueryBuilders.termQuery("age", age);
            Iterable<UserDTO> iterable = userRepository.search(queryBuilder);
            iterable.forEach(e->list.add(e));
            return list;
        }

[http://localhost:9999/es/user/termByAge?age=3][http_localhost_9999_es_user_termByAge_age_3]查询出：

![20201109153907656.png][]

（2）字符串：

单个：

QueryBuilder qb1 = QueryBuilders.termQuery("${fieldName}.keyword", "${fieldValue}");

批量：

QueryBuilder qb1 = QueryBuilders.termsQuery("${fieldName}.keyword", "${fieldValues}");

@Override
        public List<UserDTO> termByName(String name) {
            List<UserDTO> list = new ArrayList<>();
            QueryBuilder queryBuilder = QueryBuilders.termQuery("name.keyword", name);
            Iterable<UserDTO> iterable = userRepository.search(queryBuilder);
            iterable.forEach(e->list.add(e));
            return list;
        }

[http://localhost:9999/es/user/termByName?name=测试7][http_localhost_9999_es_user_termByName_name_7] 查询出：

![20201109154318572.png][]

5、prefixQuery前缀搜索

二、组合（多条件）查询：boolQuery 组合查询条件：boolQuery用来将搜索的条件进行组合，即将多个组合条件组合在一起，常用的几种组合方式有must（and，必须匹配）、should(or，或者)、mustNot(!=，必须不匹配)。

1、select \* from wtyy where name = '测试7' and address like '%地址%'

//组合查询，根据name、address查询
        @Override
        public List<UserDTO> getByNameAndAddress(String name, String address) {
            List<UserDTO> list = new ArrayList<>();
            BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery();
            queryBuilder.must(QueryBuilders.matchPhraseQuery("name",name));
            queryBuilder.must(QueryBuilders.matchQuery("address",address));
            Iterable<UserDTO> iterable = userRepository.search(queryBuilder);
            iterable.forEach(e->list.add(e));
            return list;
        }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70 2][]

2、select \* from wtyy where name = '测试7' or address like '%地址%'

//组合查询，根据name、address查询
        @Override
        public List<UserDTO> getByNameAndAddress(String name, String address) {
            List<UserDTO> list = new ArrayList<>();
            BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery();
            queryBuilder.should(QueryBuilders.matchPhraseQuery("name",name));
            queryBuilder.should(QueryBuilders.matchQuery("address",address));
            Iterable<UserDTO> iterable = userRepository.search(queryBuilder);
            iterable.forEach(e->list.add(e));
            return list;
        }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70 3][]

3、select \* from wtyy where name = '测试7' and address not  like '%地址%'

//组合查询，根据name、address查询
        @Override
        public List<UserDTO> getByNameAndAddress(String name, String address) {
            List<UserDTO> list = new ArrayList<>();
            BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery();
            queryBuilder.must(QueryBuilders.matchPhraseQuery("name",name));
            queryBuilder.mustNot(QueryBuilders.matchQuery("address",address));
            Iterable<UserDTO> iterable = userRepository.search(queryBuilder);
            iterable.forEach(e->list.add(e));
            return list;
        }

![20201109144202231.png][]

4、select \* from wtyy where ( name like  '%测试7%' and address  like '%地址%' ) and age !=3

@Override
        public List<UserDTO> getByNameAddressAge(String name, String address, String age) {
            List<UserDTO> list = new ArrayList<>();
            BoolQueryBuilder inner = QueryBuilders.boolQuery();
            BoolQueryBuilder out = QueryBuilders.boolQuery();
            inner.should(QueryBuilders.matchQuery("name", name))
                    .should(QueryBuilders.termQuery("address", address));
            out.must(inner)
                    .mustNot(QueryBuilders.termQuery("age", age));
            Iterable<UserDTO> iterable = userRepository.search(out);
            iterable.forEach(e->list.add(e));
            return list;
        }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70 4][]

三、范围查询：rangeQuery，range query可以处理数字（numbers）、日期（dates）以及字符串，不过字符串还是不要用范围查询的好，效率会很低。

1、闭区间查询：select \* from wtyy where age >=2 and age <=4：

@Override
        public List<UserDTO> getByAge(String age1, String age2) {
            List<UserDTO> list = new ArrayList<>();
            QueryBuilder  queryBuilder = QueryBuilders.rangeQuery("age")
                    .from(age1).to(age2);
            Iterable<UserDTO> iterable = userRepository.search(queryBuilder);
            iterable.forEach(e->list.add(e));
            return list;
        }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70 5][]

2、开区间查询：select \* from wtyy where age >2 and age <4：

@Override
        public List<UserDTO> getByAge(String age1, String age2) {
            List<UserDTO> list = new ArrayList<>();
            QueryBuilder  queryBuilder = QueryBuilders.rangeQuery("age")
                    .from(age1,false).to(age2,false);
            Iterable<UserDTO> iterable = userRepository.search(queryBuilder);
            iterable.forEach(e->list.add(e));
            return list;
        }

![20201109152327625.png][]

3、大于：select \* from wtyy where age >1

QueryBuilder  queryBuilder = QueryBuilders.rangeQuery("age")
                   .gt(age);

4、大于等于：select \* from wtyy where age >=1

QueryBuilder  queryBuilder = QueryBuilders.rangeQuery("age")
                   .gte(age1);

5、小于：select \* from wtyy where age <4

QueryBuilder  queryBuilder = QueryBuilders.rangeQuery("age")
                   .lt(age1);

6、小于等于：

QueryBuilder  queryBuilder = QueryBuilders.rangeQuery("age")
                   .lte(age1);

7、多条件查询：

QueryBuilder qb1 = QueryBuilders.moreLikeThisQuery(new String[]{"${fieldName1}"}, new String[]{"${fieldValue1}"}, null);
    QueryBuilder qb2 = QueryBuilders.rangeQuery("${fieldName2}").gt("${fieldValue2}");
    QueryBuilder qb3 = QueryBuilders.boolQuery().must(qb1).must(qb2);

四、高亮查询：

五、分页查询：

[https_www.elastic.co_guide_en_elasticsearch_client_java-rest_current_java-rest-high-query-builders.html]: https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-high-query-builders.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70]: /images/20221120/289f9dc43491471183ecfcb37117f12d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70 1]: /images/20221120/738cc96659f5481b96a2dc3d783dc651.png
[http_localhost_9999_es_user_termByAge_age_3]: http://localhost:9999/es/user/termByAge?age=3
[20201109153907656.png]: /images/20221120/3332314b2b914431a108f9c1d49fb2ef.png
[http_localhost_9999_es_user_termByName_name_7]: http://localhost:9999/es/user/termByName?name=%E6%B5%8B%E8%AF%957
[20201109154318572.png]: /images/20221120/dd5e9a6d8daf4640b8411538c822ed63.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70 2]: /images/20221120/848e44a3f0e44d8e80b298e981bf8ded.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70 3]: /images/20221120/02fc3e139f8f453fb6033f6b59440a2f.png
[20201109144202231.png]: /images/20221120/78832a36a2e34d518d72fa0a7c4930dc.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70 4]: /images/20221120/6db6d835c8a0416d9219a66503e9d3c7.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dfdF95X3k_size_16_color_FFFFFF_t_70 5]: /images/20221120/013c66b1271642fca735b3a4141d596c.png
[20201109152327625.png]: /images/20221120/029521c9a10c44f682fae095b662e99f.png