安装IK分词
1.选择与es版本相同的IK下载源码，网站https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.2.4/elasticsearch-analysis-ik-6.2.4.zip
或者直接在git上面查找：https://github.com/medcl/elasticsearch-analysis-ik/releases
2，将解压好的ik复制到es的plugins目录下

安装head插件
1.head插件下载地址，https://github.com/mobz/elasticsearch-head
解压到任意目录，但是要和elasticsearch的安装目录区分开，也可以像笔者一样

创建一个叫article的实体类,其中的注解代表的含义分别是：

@Document: 代表一个文档记录 ，indexName: 用来指定索引名称， type: 用来指定索引类型
@Id: 用来将对象中id和ES中_id映射
@Field: 用来指定ES中的字段对应Mapping，其中的type: 用来指定ES中存储类型，analyzer: 用来指定使用哪种分词器
​

@Data
@Document(indexName = "test-search",type = "article",shards = 1,replicas = 0, refreshInterval = "-1")
public class Article implements Serializable { 
    @Id
    private Long id;
    @Field(type = FieldType.Text,analyzer = "ik_max_word", searchAnalyzer = "ik_max_word")
    private String title; //标题
    @Field(type = FieldType.Text,analyzer = "ik_max_word", searchAnalyzer = "ik_max_word")
    private String content;// 缩略内容
}

dao层，创建一个ArticleRepository的接口，继承ElasticsearchRepository

public interface ArticleRepository extends ElasticsearchRepository { 
    /** * 使用jpa的一个好处就是你想联合title和content去搜索，它就会有方法出现，使用pageable分页 * @param title * @param content * @param pageable * @return */
    Page
 findByTitleLikeOrContentLike(String title, String content, Pageable pageable);
    /** * 根据article的content内容去搜索，使用pageable份额有 * @param content * @param pageable * @return */
    Page
 findByContentLike(String content, Pageable pageable);
}

service层，

@Service
public class ArticleService { 
    @Autowired
    private ArticleRepository articleRepository;
    public void save(Article article){ 
        articleRepository.save(article);
    }
    public Page
 search(String title, String content, Pageable pageable){ 
        return articleRepository.findByTitleLikeOrContentLike(title,content,pageable);
    }
    public Page
 search(String content,Pageable pageable){ 
        return articleRepository.findByContentLike(content,pageable);
    }
    public Page
 findAll(Pageable pageable){ 
        return articleRepository.findAll(pageable);
    }
}

controller

@RestController
public class ArticleController { 
    @Autowired
    private ArticleRepository articleRepository;
    @Autowired
    private ArticleService articleService;
    //可以插入单条也可以多条
    @RequestMapping("/articleSave")
    public String save(){ 
    List
 articles = new ArrayList<>();
    articles.add(new Article(System.currentTimeMillis(),"小米",
            "小米手机"));
    articles.add(new Article(System.currentTimeMillis(),"华为",
            "华为手机"));
    for(int i=0; i articles = articleService.search(title,content,pageable);
        return articles.toString();
    }
}

启动类加相关注解,不加不起作用

@SpringBootApplication
//@EnableRabbit
@ComponentScan({"com.example"})
@MapperScan("com.example")
@EnableElasticsearchRepositories(basePackages = "com.example")
public class WebApplication {
    public static void main(String[] args) {
        SpringApplication.run(WebApplication.class, args);

    }
}