SpringBoot整合Elasticsearch实现全文搜索功能

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

spring:
  data:
    elasticsearch:
      cluster-nodes: localhost:9200

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

@Document(indexName = "documents", type = "document")
public class DocumentEntity {

    @Id
    private String id;
    private String title;
    private String content;

    // 省略构造函数和getter/setter方法
}

import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;

public interface DocumentRepository extends ElasticsearchRepository<DocumentEntity, String> {
    
    // 可以添加自定义的查询方法
    
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
publicclass DocumentService {

    @Autowired
    private DocumentRepository documentRepository;

    public List<DocumentEntity> searchDocuments(String keyword) {
        // 可以根据业务需求调用Repository中的方法进行搜索
        return documentRepository.findByTitleOrContent(keyword, keyword);
    }

    public void saveDocument(DocumentEntity document) {
        documentRepository.save(document);
    }
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/documents")
publicclass DocumentController {

    @Autowired
    private DocumentService documentService;

    @GetMapping("/search")
    public List<DocumentEntity> searchDocuments(@RequestParam String keyword) {
        return documentService.searchDocuments(keyword);
    }

    @PostMapping("/add")
    public void addDocument(@RequestBody DocumentEntity document) {
        documentService.saveDocument(document);
    }
}