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我有一个 spring boot 应用程序，我来到这里： https ://github.com/christophstrobl/spring-data-solr-showcase/tree/4b3bbf945b182855003d5ba63a60990972a9de72
它编译并适用于： mvn spring-boot:run
但是，当我在 Spring Tools Suite 中单击“作为 Spring Boot 应用程序运行”时，出现无法找到在 application.properties 文件中设置的 ${solr.host} 的错误。
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'productServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void org.springframework.data.solr.showcase.product.ProductServiceImpl.setProductRepository(org.springframework.data.solr.showcase.product.ProductRepository); nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'productRepository': Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'solr.host' in string value "${solr.host}"
我的 applications.properties 文件如下所示：
# SPRING MVC
spring.view.suffix=.jsp
spring.view.prefix=/WEB-INF/views/
# SOLR
solr.host=http://192.168.56.11:8983/solr
相关类如下所示（唯一使用 $solr.host 变量的地方）。此外，如果我直接处理 SOLR 服务器的 IP（如注释代码中所示），应用程序可以正常启动。
* Copyright 2012 - 2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.data.solr.showcase.config;
import org.apache.solr.client.solrj.SolrServer;
import org.apache.solr.client.solrj.impl.HttpSolrServer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.context.annotation.PropertySources;
import org.springframework.data.solr.core.SolrTemplate;
import org.springframework.data.solr.repository.config.EnableSolrRepositories;
import org.springframework.data.solr.server.SolrServerFactory;
import org.springframework.data.solr.server.support.MulticoreSolrServerFactory;
/**
* @author Christoph Strobl
*/
@Configuration
@EnableSolrRepositories(basePackages = { "org.springframework.data.solr.showcase.product" })
public class SearchContext {
@Bean
public SolrServer solrServer(@Value("${solr.host}") String solrHost) {
return new HttpSolrServer(solrHost);
}
// @Bean
// public SolrServer solrServer(@Value("http://192.168.56.11:8983/solr") String solrHost) {
// return new HttpSolrServer(solrHost);
// }
@Bean
public SolrServerFactory solrServerFactory(SolrServer solrServer) {
return new MulticoreSolrServerFactory(solrServer);
}
@Bean
public SolrTemplate solrTemplate(SolrServerFactory solrServerFactory) {
return new SolrTemplate(solrServerFactory);
}
}
我包括了那个“ProductRepository”——错误中提到的那个——尽管那里没有太多事情发生……
* Copyright 2012 - 2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.data.solr.showcase.product;
import java.util.Collection;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.solr.core.query.Query.Operator;
import org.springframework.data.solr.repository.Query;
import org.springframework.data.solr.repository.SolrCrudRepository;
import org.springframework.data.solr.showcase.product.model.Product;
/**
* @author Christoph Strobl
*/
interface ProductRepository extends SolrCrudRepository<Product, String> {
@Query(fields = { SearchableProductDefinition.ID_FIELD_NAME, SearchableProductDefinition.NAME_FIELD_NAME,
SearchableProductDefinition.PRICE_FIELD_NAME, SearchableProductDefinition.FEATURES_FIELD_NAME,
SearchableProductDefinition.AVAILABLE_FIELD_NAME }, defaultOperator = Operator.AND)
Page<Product> findByNameIn(Collection<String> names, Pageable page);
}
我有一个看起来像“标准”文件结构的东西…… src/main/java 中的代码等等。 application.properties 文件位于 src/main/resources 中。
感激地接受任何建议。
（快速补充：这是运行 Tomcat 作为嵌入式服务器）
原文由 jb62 发布，翻译遵循 CC BY-SA 4.0 许可协议
java
这很模糊 - 其他答案非常有助于让我指出正确的方向。
在尝试了建议的解决方案之后，我深入了解并在 Project Properties –> Java Build Path –> Source(tab) –> Source folders on build path: [Exclusion section] 中找到了这个
删除排除项解决了问题，并且在启动期间从 application.properties 文件中获取了值。
可能值得注意的是，从命令行（在包含 .project 文件的目录中）运行它绕过了排除问题并且工作正常。