springboot检索之springboot整合springdata elasticsearch

1-修改pom.xml

释放出注释

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

 2-application.properties中配置节点名字和节点信息

spring.data.elasticsearch.cluster-name=docker-cluster
spring.data.elasticsearch.cluster-nodes=192.168.3.18:9300

3-启动主类

elasticserach版本 有可能不合适

spring官网->projects->spring data->Spring Data Elasticsearch

版本适配说明: 

 

4-两种用法

4-1实现ElasticRepository接口

4-1-1  bean包下新建Book类

package com.example.springbootelasticsearch.bean;

import org.springframework.data.elasticsearch.annotations.Document;

@Document(indexName = "test",type = "book")  //elasticsearch注解,索引名,类型
public class Book {
    private  Integer id;
    private String bookName;
    private String author;

    public Integer getId() {
        return id;
    }

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

    public String getBookName() {
        return bookName;
    }

    public void setBookName(String bookName) {
        this.bookName = bookName;
    }

    public String getAuthor() {
        return author;
    }

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

    @Override
    public String toString() {
        return "Book{" +
                "id=" + id +
                ", bookName='" + bookName + '\'' +
                ", author='" + author + '\'' +
                '}';
    }
}

4-1-2新建repository包BookRepository接口

ElasticsearchRepository<T, ID> :要存取的数据的类型 主键的类型

package com.example.springbootelasticsearch.repository;

import com.example.springbootelasticsearch.bean.Book;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;

public interface BookRepository extends ElasticsearchRepository<Book,Integer> {
}

 

4-1-3测试类中

@SpringBootTest
class SpringbootElasticsearchApplicationTests {

    
    @Autowired
    BookRepository bookRepository;
    
    @Test
    public void test02(){
        Book book = new Book();
        book.setId(1);
        book.setBookName("西游记");
        book.setAuthor("吴承恩");
        bookRepository.index(book);
    }

报错:

Caused by: java.lang.IllegalArgumentException: Rejecting mapping update to [test] as the final mapping would have more than 1 type: [news, book]

解决方法:放入到两个索引中

修改Book类

@Document(indexName = "es01test",type = "book")  //elasticsearch注解,索引名,类型
public class Book {
    private  Integer id;
    private String bookName;
    private String author;

4-1-4  BookRepository支持自定义方法

package com.example.springbootelasticsearch.repository;

import com.example.springbootelasticsearch.bean.Book;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;

import java.util.List;

public interface BookRepository extends ElasticsearchRepository<Book,Integer> {
    public List<Book> findByBookNameLike(String bookName);
}

 4-1-5添加测试类方法

    @Test
    public void test03(){
        for (Book book : bookRepository.findByBookNameLike("游")) {
            System.out.println(book);
        }

    }