elasticsearch 7.12.1与springboot结合,我想要使用前端发送请求,后端接收到之后将结果返还给es,然后es将查询结果返回给前端,并在前端展示出来,告诉我要怎么做,并写出所有的代码,我的实体类如下package com.neutech.entity; import com.baomidou.mybatisplus.annotation.IdType; import com.baomidou.mybatisplus.annotation.TableField; import com.baomidou.mybatisplus.annotation.TableId; import com.baomidou.mybatisplus.annotation.TableName; import lombok.Data; import lombok.experimental.Accessors; import java.lang.annotation.Documented; import java.util.Date; @TableName("s_post") @Data @Accessors(chain = true) //@Document public class Post { @TableId(type = IdType.AUTO) private Integer postId; private String title; private String tags; private String content; private Date createTime; private Date updateTime; private Integer publisherId; private Integer readingCount; private Integer likes; private Integer collections; @TableField(exist = false) private User user; }
时间: 2024-03-23 13:43:21 浏览: 3302
首先,你需要在你的Spring Boot项目中添加Elasticsearch的依赖。你可以在pom.xml文件中添加以下代码:
```xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
```
接下来,你需要在你的Spring Boot项目中创建一个Elasticsearch的配置类。你可以在该类中配置Elasticsearch的地址、端口等信息。以下是一个示例:
```java
@Configuration
public class ElasticsearchConfig {
@Bean
public RestHighLevelClient restHighLevelClient() {
return new RestHighLevelClient(
RestClient.builder(
new HttpHost("localhost", 9200, "http")));
}
}
```
在你的控制器中,你可以注入Elasticsearch的RestHighLevelClient,并使用该客户端来执行查询操作。以下是一个示例:
```java
@RestController
public class PostController {
@Autowired
private RestHighLevelClient restHighLevelClient;
@GetMapping("/search")
public List<Post> search(@RequestParam("keyword") String keyword) throws IOException {
SearchRequest searchRequest = new SearchRequest("s_post");
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(QueryBuilders.matchQuery("title", keyword));
searchRequest.source(searchSourceBuilder);
SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
SearchHits hits = searchResponse.getHits();
List<Post> posts = new ArrayList<>();
for (SearchHit hit : hits) {
Post post = JSON.parseObject(hit.getSourceAsString(), Post.class);
posts.add(post);
}
return posts;
}
}
```
在该示例中,我们使用了matchQuery查询来搜索与关键字匹配的数据。我们将查询结果存储在一个List中,并将其返回给前端进行展示。
需要注意的是,你需要根据你的实际情况来修改配置和代码。同时,你需要保证Elasticsearch服务已经启动,并且你的实体类Post已经正确地映射到Elasticsearch的索引中。
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