spring 引导中嵌入式 solr 服务器的类路径是什么？

Question

我尝试在我的 spring 引导应用程序中使用嵌入式 solr 服务器。我的配置如下：

package ch.*.rest.config;
import java.io.IOException;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.solr.client.solrj.SolrClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.solr.core.SolrOperations;
import org.springframework.data.solr.core.SolrTemplate;
import org.springframework.data.solr.repository.config.EnableSolrRepositories;
import org.springframework.data.solr.server.support.EmbeddedSolrServerFactory;
import org.xml.sax.SAXException;

@Configuration
@EnableSolrRepositories
public class SolrContext {

    @Bean
    public SolrClient solrClient() throws ParserConfigurationException, IOException, SAXException {
        EmbeddedSolrServerFactory factory = new EmbeddedSolrServerFactory("classpath:com/acme/solr");
        return factory.getSolrClient();
    }
    @Bean
    public SolrOperations solrTemplate() throws ParserConfigurationException, IOException, SAXException {
        return new SolrTemplate(solrClient());
    }
}

使用 gradle 我包含以下依赖项

compile('org.apache.solr:solr-core:5.5.4')
compile('org.springframework.data:spring-data-solr:2.1.4.RELEASE')

应用程序的执行抛出以下异常：

  java.io.FileNotFoundException: class path resource [com/acme/solr] cannot be resolved to absolute file path because it does not exist
> Buildiat org.springframework.util.ResourceUtils.getFile(ResourceUtils.java:178)
    at org.springframework.data.solr.server.support.EmbeddedSolrServerFactory.createCoreContainer(EmbeddedSolrServerFactory.java:110)
    at org.springframework.data.solr.server.support.EmbeddedSolrServerFactory.initCoreContainer(EmbeddedSolrServerFactory.java:85)
    at org.springframework.data.solr.server.support.EmbeddedSolrServerFactory.getCoreContainer(EmbeddedSolrServerFactory.java:193)
    at org.springframework.data.solr.server.support.EmbeddedSolrServerFactory.getSolrClient(EmbeddedSolrServerFactory.java:80)
    at ch.*.rest.config.SolrContext.solrClient(SolrContext.java:23)
    at ch.*.rest.config.SolrContext$$EnhancerBySpringCGLIB$$ca87555f.CGLIB$solrClient(<generated>)
    at ch.*.rest.config.SolrContext$$EnhancerBySpringCGLIB$$ca87555f$$FastClassBySpringCGLIB$c9fb49c.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356)
    at ch.*.rest.config.SolrContext$$EnhancerBySpringCGLIB$$ca87555f.solrClient(<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:162)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1134)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1028)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1136)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1064)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1225)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:552)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1136)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1064)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1225)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:552)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175)
    at ch.*.rest.RestApplication.main(RestApplication.java:13)

显然 class 路径 com/acme/solr 没有找到。我如何找出实际的 class 路径是什么？

对于我遵循的设置 http://docs.spring.io/spring-data/solr/docs/2.1.x/reference/html/#solr.annotation

Answer 1

来自文档：

public EmbeddedSolrServerFactory(String solrHome)
                      throws ParserConfigurationException,
                             IOException,
                             SAXException

参数:

solrHome - 可与指向 solr.solr.home 目录

的 ResourceUtils 一起使用的任何有效路径表达式

这意味着您应该在资源文件夹中创建一个 Solr Home（并将 solr 配置放在那里），以便 gradle 获取它。然后您应该将该路径传递给嵌入式 Solr 工厂。希望对你有帮助

spring 引导中嵌入式 solr 服务器的类路径是什么？

What is the classpath for the embedded solr server in spring boot?

java

solr

classpath

spring-data-solr

spring-boot