全文检索知识库档案管理 后端启动报错

Question

全文检索知识库档案管理 后端启动报错

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-09-14 16:19:33.394 [main] ERROR org.springframework.boot.SpringApplication:837 - Application run failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'esTemplateInit': Unsatisfied dependency expressed through field 'iKmEsMgntService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'kmEsMgntServiceImpl': Unsatisfied dependency expressed through field 'restHighLevelClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'restHighLevelClient' defined in class path resource [org/jeecg/modules/KM/common/config/ElasticsearchConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.RestHighLevelClient]: Factory method 'restHighLevelClient' threw exception; nested exception is java.lang.IllegalArgumentException: Username may not be null
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
    at org.jeecg.JeecgApplication.main(JeecgApplication.java:29)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'kmEsMgntServiceImpl': Unsatisfied dependency expressed through field 'restHighLevelClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'restHighLevelClient' defined in class path resource [org/jeecg/modules/KM/common/config/ElasticsearchConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.RestHighLevelClient]: Factory method 'restHighLevelClient' threw exception; nested exception is java.lang.IllegalArgumentException: Username may not be null
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
    ... 20 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'restHighLevelClient' defined in class path resource [org/jeecg/modules/KM/common/config/ElasticsearchConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.RestHighLevelClient]: Factory method 'restHighLevelClient' threw exception; nested exception is java.lang.IllegalArgumentException: Username may not be null
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
    ... 33 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.RestHighLevelClient]: Factory method 'restHighLevelClient' threw exception; nested exception is java.lang.IllegalArgumentException: Username may not be null
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650)
    ... 46 common frames omitted
Caused by: java.lang.IllegalArgumentException: Username may not be null
    at org.apache.http.util.Args.notNull(Args.java:54)
    at org.apache.http.auth.UsernamePasswordCredentials.<init>(UsernamePasswordCredentials.java:81)
    at org.jeecg.modules.KM.common.config.ElasticsearchConfig.restHighLevelClient(ElasticsearchConfig.java:67)
    at org.jeecg.modules.KM.common.config.ElasticsearchConfig$$EnhancerBySpringCGLIB$$5b7a400c.CGLIB$restHighLevelClient$6(<generated>)
    at org.jeecg.modules.KM.common.config.ElasticsearchConfig$$EnhancerBySpringCGLIB$$5b7a400c$$FastClassBySpringCGLIB$$7c3ca7a4.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331)
    at org.jeecg.modules.KM.common.config.ElasticsearchConfig$$EnhancerBySpringCGLIB$$5b7a400c.restHighLevelClient(<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)
    ... 47 common frames omitted

Answer 1

引用 皆我百晓生 小程序回复内容作答：

根据错误信息，您的应用程序在启动时遇到了以下问题：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'esTemplateInit': Unsatisfied dependency expressed through field 'iKmEsMgntService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'kmEsMgntServiceImpl': Unsatisfied dependency expressed through field 'restHighLevelClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'restHighLevelClient' defined in class path resource [org/jeecg/modules/KM/common/config/ElasticsearchConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.elasticsearch.client.RestHighLevelClient]: Factory method 'restHighLevelClient' threw exception; nested exception is java.lang.IllegalArgumentException: Username may not be null

这个错误是由于在Elasticsearch的配置文件中未设置用户名而导致的。在您的配置文件中，您需要配置Elasticsearch的用户名和密码以连接到Elasticsearch服务器。

您可以根据您的具体情况，在ElasticsearchConfig类中找到restHighLevelClient的bean定义，并确保您设置了正确的用户名和密码。例如，您可以根据您的配置文件使用以下代码来设置用户名和密码：

```java
@Bean
public RestHighLevelClient restHighLevelClient() {
    CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
    credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials("your-username", "your-password"));

    RestClientBuilder builder = RestClient.builder(new HttpHost("localhost", 9200))
            .setHttpClientConfigCallback(httpClientBuilder -> httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider));

    return new RestHighLevelClient(builder);
}

请确保将your-username和your-password替换为正确的用户名和密码。

重新启动应用程序时，错误应该就会被解决。如有任何问题，请随时提问。
```