Springboot整合Elasticsearch 报错availableProcessors is already set to [4], rejecting [4]-蒲公英云

1、异常信息：

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]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:627)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:456)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1247)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:857)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:760)
    ... 71 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.transport.TransportClient]: Factory method 'elasticsearchClient' threw exception; nested exception is java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622)
    ... 85 more
Caused by: java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
    at io.netty.util.NettyRuntime$AvailableProcessorsHolder.setAvailableProcessors(NettyRuntime.java:51)
    at io.netty.util.NettyRuntime.setAvailableProcessors(NettyRuntime.java:87)
    at org.elasticsearch.transport.netty4.Netty4Utils.setAvailableProcessors(Netty4Utils.java:83)
    at org.elasticsearch.transport.netty4.Netty4Transport.<init>(Netty4Transport.java:112)
    at org.elasticsearch.transport.Netty4Plugin.lambda$getTransports$0(Netty4Plugin.java:86)
    at org.elasticsearch.client.transport.TransportClient.buildTemplate(TransportClient.java:189)
    at org.elasticsearch.client.transport.TransportClient.<init>(TransportClient.java:283)
    at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:128)
    at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:114)
    at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:104)
    at org.springframework.data.elasticsearch.client.TransportClientFactoryBean.buildClient(TransportClientFactoryBean.java:85)
    at org.springframework.data.elasticsearch.client.TransportClientFactoryBean.afterPropertiesSet(TransportClientFactoryBean.java:80)
    at org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchAutoConfiguration.elasticsearchClient(ElasticsearchAutoConfiguration.java:60)
    at org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchAutoConfiguration$$EnhancerBySpringCGLIB$$1dab9073.CGLIB$elasticsearchClient$0(<generated>)
    at org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchAutoConfiguration$$EnhancerBySpringCGLIB$$1dab9073$$FastClassBySpringCGLIB$$5f6ed40d.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363)
    at org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchAutoConfiguration$$EnhancerBySpringCGLIB$$1dab9073.elasticsearchClient(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
    ... 86 more
22-Jul-2019 11:02:36.069 SEVERE [localhost-startStop-1]

2、pom.xml（部分截图）

<parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.1.4.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
</parent>
 <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<dependency>
     <groupId>redis.clients</groupId>
     <artifactId>jedis</artifactId>
     <version>2.9.0</version>
 </dependency>

附（链接）：github上在netty项目下大佬回复的解决办法（谷歌翻译了下）

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ps:后面看了下github上他的资料(jasontedor)，发现他是Elasticsearch 项目的参与者之一；

网上的大部分方法是：

在springboot的启动类中的main方法里加上 System.setProperty(“es.set.netty.runtime.available.processors”,”false”);

public static void main(String[] args) {
        /**
         * 防止netty的bug
         * java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
         */
        //加上下面这段话
        System.setProperty("es.set.netty.runtime.available.processors","false");
        SpringApplication.run(TestApplication.class, args);
    }

但是并没有解决我的问题，我的问题是本地能正常运行，并无异常，但是放在服务器上运行tomcat就会启动失败，并报上述错误；

后将代码段：System.setProperty(“es.set.netty.runtime.available.processors”,”false”；挪到静态代码块中；

如下：

static{
        System.setProperty("es.set.netty.runtime.available.processors", "false");
    }
    public static void main(String[] args) {
        /**
         * 防止netty的bug
         * java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
         */
        //System.setProperty("es.set.netty.runtime.available.processors","false");
        SpringApplication.run(TestApplication.class, args);
    }