ES 创建索引解析 DSL 解析异常

背景

ES java 客户端 RestClient 创建索引DSL解析异常，已排除可能错误：

• 客户端 ES 依赖与服务器 ES 版本不一致。
• ES 6.* 与 ES 7.* DSL 语句不兼容。
• json 格式错误。

各依赖版本

<parent>  
    <groupId>org.springframework.boot</groupId>  
    <artifactId>spring-boot-starter-parent</artifactId>  
    <version>2.3.10.RELEASE</version>  
    <relativePath/> <!-- lookup parent from repository -->  
</parent>

<properties>
	<elasticsearch.version>7.12.1</elasticsearch.version>
</properties>
<dependencies>
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-test</artifactId>
		<scope>test</scope>
		<exclusions>
			<exclusion>
				<groupId>org.junit.vintage</groupId>
				<artifactId>junit-vintage-engine</artifactId>
			</exclusion>
		</exclusions>
	</dependency>
	<dependency>
		<groupId>org.elasticsearch.client</groupId>
		<artifactId>elasticsearch-rest-high-level-client</artifactId>
	</dependency>
</dependencies>

单元测试代码

import lombok.extern.slf4j.Slf4j;  
import org.apache.http.HttpHost;  
import org.elasticsearch.client.RequestOptions;  
import org.elasticsearch.client.RestClient;  
import org.elasticsearch.client.RestHighLevelClient;  
//import org.elasticsearch.client.indices.CreateIndexRequest;  
import org.elasticsearch.action.admin.indices.create.CreateIndexRequest;  
import org.elasticsearch.common.xcontent.XContentType;  
import org.junit.jupiter.api.Test;  
import org.springframework.boot.test.context.SpringBootTest;   
import java.io.IOException;  

@Slf4j  
@SpringBootTest  
class DemoApplicationTests {  
  
    String mappingJson = "{\n" +  
            "  \"mappings\": \n" +  
            "  {\n" +  
            "    \"properties\": \n" +  
            "    {\n" +  
            "      \"id\":{\"type\": \"keyword\"},\n" +  
            "      \"name\":{\"type\": \"text\",\"analyzer\": \"ik_max_word\"},\n" +  
            "      \"address\":{\"type\": \"keyword\",\"index\": false},\n" +  
            "      \"price\":{\"type\": \"integer\"},\n" +  
            "      \"score\":{\"type\": \"integer\"},\n" +  
            "      \"brand\":{\"type\": \"keyword\"},\n" +  
            "      \"star_name\":{\"type\":\"keyword\"},\n" +  
            "      \"business\":{\"type\":\"keyword\"},\n" +  
            "      \"location\":{\"type\":\"geo_point\"},\n" +  
            "      \"pic\":{\"type\": \"keyword\", \"index\": false}\n" +  
            "    }\n" +  
            "  }\n" +  
            "}";  
  
    @Test  
    void contextLoads() throws IOException {  
        RestHighLevelClient client = new RestHighLevelClient(RestClient.builder(  
                HttpHost.create("http://192.168.0.102:9200")  
        ));  
        CreateIndexRequest request = new CreateIndexRequest("demo");  
        request.source(mappingJson, XContentType.JSON);  
        client.indices().create(request, RequestOptions.DEFAULT);  
        client.close();  
    }  
}  

问题描述

异常信息

ElasticsearchStatusException[Elasticsearch exception [type=mapper_parsing_exception, reason=Failed to parse mapping [properties]: Root mapping definition has unsupported parameters:

原因分析

RestClient 客户端 create 方法有两个版本，其中一个版本已过时，不能在 ES 7.* 版本中使用。

//可用版本
import org.elasticsearch.client.indices.CreateIndexRequest;  
//过时版本
import org.elasticsearch.action.admin.indices.create.CreateIndexRequest;  

解决方案

导入可用版本的 CreateIndexRequest 库。

//可用版本
import org.elasticsearch.client.indices.CreateIndexRequest;