我將 Springboot 與 MongoDb 和 Elasticsearch 一起用于我的專案。當我的 Elasticsearch 服務器運行時，我的 Springboot 應用程式作業正常，但是當 Elasticsearch 服務器停止時，我的 Springboot 應用程式也無法啟動。根據我的專案要求，即使 Elasticsearch 服務器無法啟動，我們的 Springboot 應用程式仍然應該運行，因為我們的大多數 API 都是基于 Springboot 和 MongoDb 構建的，只有少數依賴于 Elasticsearch。有什么辦法可以做到這一點？
彈性搜索配置
@Bean(destroyMethod = "close")
public RestHighLevelClient client() {
RestHighLevelClient client = new RestHighLevelClient(
RestClient.builder(new HttpHost(hostname, port,scheme))
.setRequestConfigCallback(
new RestClientBuilder.RequestConfigCallback() {
@Override
public RequestConfig.Builder customizeRequestConfig(
RequestConfig.Builder requestConfigBuilder) {
return requestConfigBuilder
.setConnectTimeout(6000000)
.setSocketTimeout(6000000);
}
}));
return client;
}
例外堆疊跟蹤（為安全起見隱藏了一些文本）
啟動 ApplicationContext 時出錯。要顯示條件報告，請在啟用“除錯”的情況下重新運行您的應用程式。
2022-04-05 11:11:06.056 錯誤 9356 --- [restartedMain] osboot.SpringApplication：應用程式運行失敗
org.springframework.beans.factory.UnsatisfiedDependencyException：創建名稱為“-----”的bean時出錯：通過欄位“-----”表示不滿足的依賴關系；嵌套例外是 org.springframework.beans.factory.UnsatisfiedDependencyException：創建名稱為“-----”的 bean 時出錯：通過欄位“-----”表示不滿足的依賴關系；嵌套例外是 org.springframework.beans.factory.BeanCreationException: Error created bean with name '-----' defined in ----- 在 ElasticsearchRepositoriesRegistrar.EnableElasticsearchRepositoriesConfiguration 上宣告的 @EnableElasticsearchRepositories 中定義：呼叫 init 方法失敗；嵌套例外是 org.springframework.beans.BeanInstantiationException：無法實體化 [org.springframework.data.elasticsearch.repository.support. SimpleElasticsearchRepository]：建構式拋出例外；嵌套例外是 org.springframework.dao.DataAccessResourceFailureException: Connection refused; 嵌套例外是 java.lang.RuntimeException: Connection denied
在 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:660) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1413) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.9.jar:5.3.9]
在 org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.9.jar:5.3.9]
在 org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.4.jar:2.5.4]
在 org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-2.5.4.jar:2.5.4]
在 org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-2.5.4.jar:2.5.4]
在 org.springframework.boot.SpringApplication.run(SpringApplication.java:338) ~[spring-boot-2.5.4.jar:2.5.4]
在 org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) ~[spring-boot-2.5.4.jar:2.5.4]
在 org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) ~[spring-boot-2.5.4.jar:2.5.4]
在 com.extramarks.questionMSA.MsaQuestionApplication.main(MsaQuestionApplication.java:24) ~[main/:na]
在 java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
在 java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
在 java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
在 java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
在 org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.5.4.jar:2.5.4]
原因：org.springframework.beans.factory.UnsatisfiedDependencyException：創建名稱為'-----'的bean時出錯：通過欄位'-----'表示的依賴關系不滿足；嵌套例外是 org.springframework.beans.factory.BeanCreationException: Error created bean with name '-----' defined in ----- 在 ElasticsearchRepositoriesRegistrar.EnableElasticsearchRepositoriesConfiguration 上宣告的 @EnableElasticsearchRepositories 中定義：呼叫 init 方法失敗；嵌套例外是 org.springframework.beans.BeanInstantiationException：無法實體化 [org.springframework.data.elasticsearch.repository.support.SimpleElasticsearchRepository]：建構式拋出例外；嵌套例外是 org.springframework.dao.DataAccessResourceFailureException: Connection refused; 嵌套例外是 java.lang。
在 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:660) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1413) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:657) ~[spring-beans-5.3.9.jar:5.3.9]
...省略了25個常用框架
引起：org.springframework.beans.factory.BeanCreationException：錯誤創建名稱為'-----'的bean定義在-----定義在ElasticsearchRepositoriesRegistrar.EnableElasticsearchRepositoriesConfiguration上宣告的@EnableElasticsearchRepositories：呼叫init方法失敗；嵌套例外是 org.springframework.beans.BeanInstantiationException：無法實體化 [org.springframework.data.elasticsearch.repository.support.SimpleElasticsearchRepository]：建構式拋出例外；嵌套例外是 org.springframework.dao.DataAccessResourceFailureException: Connection refused; 嵌套例外是 java.lang.RuntimeException: Connection denied
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:657) ~[spring-beans-5.3.9.jar:5.3.9]
...省略了39個常用框架
引起：org.springframework.beans.BeanInstantiationException：無法實體化[org.springframework.data.elasticsearch.repository.support.SimpleElasticsearchRepository]：建構式拋出例外；嵌套例外是 org.springframework.dao.DataAccessResourceFailureException: Connection refused; 嵌套例外是 java.lang.RuntimeException: Connection denied
在 org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:221) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.data.repository.core.support.RepositoryFactorySupport.lambda$getTargetRepositoryViaReflection$5(RepositoryFactorySupport.java:543) ~[spring-data-commons-2.5.4.jar:2.5.4]
在 java.base/java.util.Optional.map(Optional.java:265) ~[na:na]
在 org.springframework.data.repository.core.support.RepositoryFactorySupport.getTargetRepositoryViaReflection(RepositoryFactorySupport.java:543) ~[spring-data-commons-2.5.4.jar:2.5.4]
在 org.springframework.data.repository.core.support.RepositoryFactorySupport.getTargetRepositoryViaReflection(RepositoryFactorySupport.java:528) ~[spring-data-commons-2.5.4.jar:2.5.4]
在 org.springframework.data.elasticsearch.repository.support.ElasticsearchRepositoryFactory.getTargetRepository(ElasticsearchRepositoryFactory.java:74) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
在 org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:319) ~[spring-data-commons-2.5.4.jar:2.5.4]
在 org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:323) ~[spring-data-commons-2.5.4.jar:2.5.4]
在 org.springframework.data.util.Lazy.getNullable(Lazy.java:230) ~[spring-data-commons-2.5.4.jar:2.5.4]
在 org.springframework.data.util.Lazy.get(Lazy.java:114) ~[spring-data-commons-2.5.4.jar:2.5.4]
在 org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:329) ~[spring-data-commons-2.5.4.jar:2.5.4]
在 org.springframework.data.elasticsearch.repository.support.ElasticsearchRepositoryFactoryBean.afterPropertiesSet(ElasticsearchRepositoryFactoryBean.java:69) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845) ~[spring-beans-5.3.9.jar:5.3.9]
在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) ~[spring-beans-5.3.9.jar:5.3.9]
...省略了49個常用框架
引起：org.springframework.dao.DataAccessResourceFailureException：連接被拒絕；嵌套例外是 java.lang.RuntimeException: Connection denied
在 org.springframework.data.elasticsearch.core.ElasticsearchExceptionTranslator.translateExceptionIfPossible(ElasticsearchExceptionTranslator.java:75) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
在 org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.translateException(ElasticsearchRestTemplate.java:402) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
在 org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.execute(ElasticsearchRestTemplate.java:385) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
在 org.springframework.data.elasticsearch.core.DefaultIndexOperations.doExists(DefaultIndexOperations.java:107) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
在 org.springframework.data.elasticsearch.core.AbstractDefaultIndexOperations.exists(AbstractDefaultIndexOperations.java:141) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
在 org.springframework.data.elasticsearch.repository.support.SimpleElasticsearchRepository.(SimpleElasticsearchRepository.java:93) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
在 java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:na]
在 java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:na]
在 java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na]
在 java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) ~[na:na]
在 org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:208) ~[spring-beans-5.3.9.jar:5.3.9]
...省略了62個常用框架
引起：java.lang.RuntimeException：連接被拒絕
在 org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.translateException(ElasticsearchRestTemplate.java:400) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
...省略了71個常用框架
引起：java.net.ConnectException：連接被拒絕
在 org.elasticsearch.client.RestClient.extractAndWrapCause(RestClient.java:880) ~[elasticsearch-rest-client-7.12.1.jar:7.12.1]
在 org.elasticsearch.client.RestClient.performRequest(RestClient.java:283) ~[elasticsearch-rest-client-7.12.1.jar:7.12.1]
在 org.elasticsearch.client.RestClient.performRequest(RestClient.java:270) ~[elasticsearch-rest-client-7.12.1.jar:7.12.1]
在 org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1654) ~[elasticsearch-rest-high-level-client-7.12.1.jar:7.12.1]
在 org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1639) ~[elasticsearch-rest-high-level-client-7.12.1.jar:7.12.1]
在 org.elasticsearch.client.IndicesClient.exists(IndicesClient.java:963) ~[elasticsearch-rest-high-level-client-7.12.1.jar:7.12.1]
在 org.springframework.data.elasticsearch.core.DefaultIndexOperations.lambda$doExists$2(DefaultIndexOperations.java:107) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
在 org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.execute(ElasticsearchRestTemplate.java:383) ~[spring-data-elasticsearch-4.2.4.jar:4.2.4]
...省略了70個常用框架
引起：java.net.ConnectException：連接被拒絕
在 java.base/sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) ~[na:na]
在 java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:777) ~[na:na]
在 org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvent(DefaultConnectingIOReactor.java:174) ~[httpcore-nio-4.4.14.jar:4.4.14]
在 org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvents(DefaultConnectingIOReactor.java:148) ~[httpcore-nio-4.4.14.jar:4.4.14]
在 org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:351) ~[httpcore-nio-4.4.14.jar:4.4.14]
在 org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.execute(PoolingNHttpClientConnectionManager.java:221) ~[httpasyncclient-4.1.4.jar:4.1.4]
在 org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase$1.run(CloseableHttpAsyncClientBase.java:64) ~[httpasyncclient-4.1.4.jar:4.1.4]
在 java.base/java.lang.Thread.run(Thread.java:829) ~[na:na]
uj5u.com熱心網友回復：
您可以使用 @Lazy 標記它們 bean，因此 spring 不會在應用程式啟動時構造它們。當您在運行時使用它們時，它將構建它們。
請參閱此檔案
https://memorynotfound.com/lazy-initialize-autowired-dependencies-with-lazy-annotation/
轉載請註明出處，本文鏈接：https://www.uj5u.com/qita/456140.html