引入依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
定义实体对象
package com.tangyuewei.user.document;
import lombok.Data;
import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.data.elasticsearch.annotations.Field;
import org.springframework.data.elasticsearch.annotations.FieldType;
import javax.persistence.Id;
/**
* @author tangyuewei
* <p>
* Description: es文档对象
* </p>
* @date 2020/4/1
*/
@Document(indexName = "user",type = "docs", shards = 1, replicas = 0)
@Data
public class UserDocument {
@Id
private String id;
@Field(type = FieldType.Keyword)
private String userName;
}
继承接口
package com.tangyuewei.user.common.es;
import com.tangyuewei.user.document.UserDocument;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
/**
* @author tangyuewei
* <p>
* Description:定义 UserDocumentRespository 接口
* </p>
* @date 2020/4/1
*/
public interface UserDocumentRespository extends ElasticsearchRepository<UserDocument,String> {
}
测试类
package com.tangyuewei.user.tests;
import com.tangyuewei.user.common.es.UserDocumentRespository;
import com.tangyuewei.document.UserDocument;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.Resource;
/**
* @author tangyuewei
* <p>
* Description:
* </p>
* @date 2020/4/1
* @see com.tangyuewei.user.tests
*/
@RunWith(SpringRunner.class)
@SpringBootTest
public class UserTests {
@Resource
private ElasticsearchTemplate elasticsearchTemplate;
@Resource
private UserDocumentRespository userDocumentRespository;
@Test
public void testCreateIndex() {
elasticsearchTemplate.createIndex(UserDocument.class);
UserDocument user = new UserDocument();
user.setId("123456");
user.setUserName("Test");
UserDocument saveUser = userDocumentRespository.save(user);
Assert.assertNotNull(saveUser);
System.out.println(userDocumentRespository.findById(user.getId()));
elasticsearchTemplate.deleteIndex(UserDocument.class);
}
}
运行测试
运行时抛的的异常如下，此处只截取了部分
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDocumentRespository': Cannot resolve reference to bean 'elasticsearchTemplate' while setting bean property 'elasticsearchOperations'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'elasticsearchTemplate' defined in class path resource [org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchDataAutoConfiguration.class]: Unsatisfied dependency expressed through method 'elasticsearchTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'elasticsearchClient' defined in class path resource [org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.transport.TransportClient]: Factory method 'elasticsearchClient' threw exception; nested exception is java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDocumentRespository': Cannot resolve reference to bean 'elasticsearchTemplate' while setting bean property 'elasticsearchOperations'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'elasticsearchTemplate' defined in class path resource [org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchDataAutoConfiguration.class]: Unsatisfied dependency expressed through method 'elasticsearchTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'elasticsearchClient' defined in class path resource [org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.transport.TransportClient]: Factory method 'elasticsearchClient' threw exception; nested exception is java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'elasticsearchTemplate' defined in class path resource [org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchDataAutoConfiguration.class]: Unsatisfied dependency expressed through method 'elasticsearchTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'elasticsearchClient' defined in class path resource [org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.transport.TransportClient]: Factory method 'elasticsearchClient' threw exception; nested exception is java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'elasticsearchClient' defined in class path resource [org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.transport.TransportClient]: Factory method 'elasticsearchClient' threw exception; nested exception is java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.transport.TransportClient]: Factory method 'elasticsearchClient' threw exception; nested exception is java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
Caused by: java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
因为spring boot项目中也使用了Redis，引入的依赖是
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
github上给出的回答是：启动时设置es.set.netty.runtime.available.processors=false
解决方案一：
写个config类：
package com.tangyuewei.user.common.es;
import org.springframework.context.annotation.Configuration;
import javax.annotation.PostConstruct;
/**
* @author tangyuewei
* <p>
* Description: 解决同时引用redis与es启动时报错
* </p>
* @date 2020/4/1
* @see com.tangyuewei.user.common.es
*/
@Configuration
public class ElasticSearchConfig {
@PostConstruct
void init() {
System.setProperty("es.set.netty.runtime.available.processors", "false");
}
}
解决方案二：
在程序的入口类main方法上加入
public static void main(String[] args) {
System.setProperty("es.set.netty.runtime.available.processors", "false");
SpringApplication.run(SpringbootApplication.class, args);
}
随时随地看视频
