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目录

一、创建项目elasticsearch-sample，项目结构如下

二、配置pom文件

三、配置application文件

四、代码展示

---

一、创建项目elasticsearch-sample，项目结构如下

 

二、配置pom文件

         <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.24</version>
        </dependency>

三、配置application文件

spring:
  data:
    elasticsearch:
      repositories:
        enabled: true
  elasticsearch:
    rest:
      uris: [elasticsearch_host:9200]

http.cors.enabled: true
http.cors.allow-origin: "*"

四、代码展示

public interface BookService {

    Optional<BookBean> findById(String id);

    BookBean save(BookBean book);

    void delete(BookBean book);

    Optional<BookBean> findOne(String id);

    List<BookBean> findAll();

    Page<BookBean> findByAuthor(String author, PageRequest pageRequest);

    Page<BookBean> findByTitle(String title, PageRequest pageRequest);
}

@Service("bookService")
public class BookServiceImpl implements BookService {

    @Autowired
    @Qualifier("bookRepository")
    private BookRepository bookRepository;

    @Override
    public Optional<BookBean> findById(String id) {
        //CrudRepository中的方法
        return bookRepository.findById(id);
    }

    @Override
    public BookBean save(BookBean book) {
        return bookRepository.save(book);
    }

    @Override
    public void delete(BookBean book) {
        bookRepository.delete(book);
    }

    @Override
    public Optional<BookBean> findOne(String id) {
        return bookRepository.findById(id);
    }

    @Override
    public List<BookBean> findAll() {
        return (List<BookBean>) bookRepository.findAll();
    }

    @Override
    public Page<BookBean> findByAuthor(String author, PageRequest pageRequest) {
        return bookRepository.findByAuthor(author, pageRequest);
    }

    @Override
    public Page<BookBean> findByTitle(String title, PageRequest pageRequest) {
        return bookRepository.findByTitle(title, pageRequest);
    }
}

/**
 * 接口关系：
 * ElasticsearchRepository --> ElasticsearchCrudRepository --> PagingAndSortingRepository --> CrudRepository
 */
public interface BookRepository extends ElasticsearchRepository<BookBean, String> {

    Optional<BookBean> findById(String id);

    Page<BookBean> findByAuthor(String author, Pageable pageable);

    Page<BookBean> findByTitle(String title, Pageable pageable);

    List<Book> findByTitleOrAuthor(String title, String author);

    @Highlight(fields = {
            @HighlightField(name = "title"),
            @HighlightField(name = "author")
    })
    @Query("{\"match\":{\"title\":\"?0\"}}")
    SearchHits<Book> find(String keyword);
}

@Document(indexName = "book")
public class BookBean {
    @Id
    private String id;
    private String title;
    private String author;
    private String postDate;

    public BookBean(){}

    public BookBean(String id, String title, String author, String postDate){
        this.id=id;
        this.title=title;
        this.author=author;
        this.postDate=postDate;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getAuthor() {
        return author;
    }

    public void setAuthor(String author) {
        this.author = author;
    }

    public String getPostDate() {
        return postDate;
    }

    public void setPostDate(String postDate) {
        this.postDate = postDate;
    }

    @Override
    public String toString() {
        return "BookBean{" +
                "id='" + id + '\'' +
                ", title='" + title + '\'' +
                ", author='" + author + '\'' +
                ", postDate='" + postDate + '\'' +
                '}';
    }
}

/**
 * @author wx:深入技术架构
 */
@Slf4j
@RestController
public class BookController {
    @Autowired
    private BookService bookService;

    @RequestMapping("/book/get/{id}")
    @ResponseBody
    public BookBean getBookById(@PathVariable String id){
        Optional<BookBean> opt =bookService.findById(id);
        log.info(opt.toString());
        BookBean book=opt.get();
        return book;
    }

    @RequestMapping("/book/save")
    @ResponseBody
    public void bookSave(){
        BookBean book=new BookBean("1","ES 入门教程","张三","2022-08-05");
        System.out.println(book);
        bookService.save(book);
    }

    @RequestMapping("/book/edit")
    @ResponseBody
    public void bookEdit(){
        BookBean book=new BookBean("1","ES 高级教程","李四","2022-08-05");
        System.out.println(book);
        bookService.save(book);
    }
}

五、测试

http://localhost:8080/book/save

http://localhost:8080/book/edit

http://localhost:8080/book/get/1

六、通过kibana查看