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<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>

entity层

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@Data
@Document(indexName = "buy", type = "_doc")
public class TArticle implements Serializable {
    private static final long serialVersionUID = -34674011594388686L;
    /**
    * 文章id
    */
    @Id
    private Long id;
    // 省略
}

controller层，引入ElasticsearchTemplate，进行增删查改

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 @Autowired
 private ElasticsearchTemplate elasticSearchTemplate;
 
 
/**
 * 删除文章
 */
@GetMapping("/deleteById/{id}")
public ApiResult deleteById(@PathVariable("id") Integer id) {
    boolean delete = tArticleService.deleteById(id);
    if (delete) {
        elasticSearchTemplate.delete(TArticle.class, id.toString());
        return ApiResult.resultWith(ResultCodeEnum.SUCCESS);
    } else {
        return ApiResult.errorWith(ResultCodeEnum.OPERATION_FAILED);
    }
}

/**
 * 添加文章
 */
@PostMapping("/addArticle")
public ApiResult addCorpus(TArticle tArticle) {
    if (tArticleService.insert(tArticle)) {
        IndexQuery indexQuery = new IndexQueryBuilder().withObject(tArticle).build();
        elasticSearchTemplate.index(indexQuery);
        return ApiResult.resultWith(ResultCodeEnum.SUCCESS);
    } else {
        return ApiResult.errorWith(ResultCodeEnum.ERROR);
    }
}

/**
 * 修改文章
 * id 和 修改内容
 *
 * @param tArticle
 * @return
 */
@PostMapping("/updateArticle")
public ApiResult updateArticle(TArticle tArticle) {
    if (tArticleService.update(tArticle) > 0) {
        UpdateRequest request = new UpdateRequest("buy","_doc",tArticle.getId().toString());
        Map<String, Object> map = BeanUtil.beanToMap(tArticle,false,true);
        request.doc(toArgs(map));
        UpdateQuery updateQuery = new UpdateQueryBuilder().withId(tArticle.getId().toString()).withClass(TArticle.class).withUpdateRequest(request).build();
        elasticSearchTemplate.update(updateQuery);
        return ApiResult.resultWith(ResultCodeEnum.SUCCESS);
    } else {
        return ApiResult.errorWith(ResultCodeEnum.ERROR);
    }
}

/**
 * 将批量数据转换成es参数数组
 * @param data
 * @return
 */
private Object[] toArgs(Map<String, Object> data) {
    List<Object> args = new ArrayList<>();
    if (CollectionUtil.isEmpty(data)) {
        throw new RuntimeException("批量操作数据不可为空 !");
    }
    data.forEach((key, value) -> {
        args.add(key);
        args.add(value);
    });
    return args.toArray();
}

/**
 * 查询所有数据 ElasticSearch
 * matchAllQuery()全部查询
 * fuzzyQuery()模糊查询 注意模糊查询不能模糊查long，int数字类型
 * termQuery() 词条查询
 * idsQuery() id查询
 */
@RequestMapping("/findAll")
public List<TArticle> findAll() {
    SearchQuery searchQuery1 = new NativeSearchQueryBuilder()
            .withQuery(matchAllQuery())
            .build();
    SearchQuery searchQuery2 = new NativeSearchQueryBuilder()
            .withQuery(QueryBuilders.fuzzyQuery("address", "Street"))
            .build();
    List<TArticle> tArticles = elasticSearchTemplate.queryForList(searchQuery, TArticle.class);
    tArticles.forEach(System.out::println);
    return tArticles;
}
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