nested exception is java.lang.IllegalStateException: availableProcessors is already set to [4], reje

亦凉 2024-04-19 14:25 52阅读 0赞

**一、spring boot 集成redis和elasticsearch遇到的坑**  
pom.xml

<dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-elasticsearch</artifactId>
                <version>3.1.10.RELEASE</version>
            </dependency>
             <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-redis</artifactId>
                <version>2.1.8.RELEASE</version>
            </dependency>

然后出现报错：

Failed to instantiate [org.elasticsearch.client.transport.TransportClient]: Factory method 'elasticsearchClient' threw exception;

或者这样的

nested exception is java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]1

解决办法：

@SpringBootApplication
    public class CcsWebApiApplication{
        public static void main(String[] args) {
             //添加这个条代码
            System.setProperty("es.set.netty.runtime.available.processors","false");
            SpringApplication.run(CcsWebApiApplication.class, args);
        }
    }

由于elasticsearch与redis2.x版本都用到了netty、导致netty初始化报错。  
**注意：**  
如果还不行添加elasticsearch的单独netty依赖

<dependency>
        <groupId>org.elasticsearch.plugin</groupId>
        <artifactId>transport-netty4-client</artifactId>
        
        <version>6.2.3</version>
    </dependency>