本文介绍了Spring Field需要一个找不到Spring JPA类型的bean的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
这是我在论坛上的第一个问题，因为我几乎陷于死胡同.我使用spring开发了一个宁静的Web服务，在该服务中，我想使用spring数据将一些数据存储在db中.但是，在遵循了网站上的教程和我的入门指南之后，我不断遇到类似的问题，看来这些教程总是缺少一些东西.这是我的代码.
this is my first question on the forum since I'm pretty much stuck at a dead end. Im using spring to develop a restful web service, and in that service I wanna store some data in a db using spring data. However, after following the tutorial on the website and my getting started guides, I keep getting into similar problems, it seems that these tutorials always have something missing.Here is my code.
Application.java
Application.java
package hello;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
@SpringBootApplication(scanBasePackages="hello.Application")
@EnableJpaRepositories("hello.provScoreRepo")
@ComponentScan("Controller")
@EntityScan("hello.provScore")
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
provScore.java
provScore.java
package hello;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class provScore {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
private String siteName;
private double score;
protected provScore() {}
public provScore(String siteName, double score) {
this.siteName = siteName;
this.score = score;
}
@Override
public String toString() {
return String.format(
"Customer[id=%d, siteName='%s', score='%d']",
id, siteName, score);
}
}
provScoreRepo.java
provScoreRepo.java
package hello;
import java.util.List;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Component;
@Component
public interface provScoreRepo extends CrudRepository<provScore, Long> {
List<provScore> findBySiteName(String url);
}
我的服务控制器
package Controller;
import java.io.File;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;
import org.openprovenance.prov.interop.InteropFramework;
import org.openprovenance.prov.interop.InteropFramework.ProvFormat;
import org.openprovenance.prov.interop.*;
import org.openprovenance.prov.model.Document;
import org.openprovenance.prov.template.Bindings;
import org.openprovenance.prov.template.BindingsJson;
import org.openprovenance.prov.template.Expand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import hello.Greeting;
import hello.ProcessProv;
import hello.metaExtractor;
import hello.provScore;
import hello.provScoreRepo;
@RestController
public class ServicesController {
private static final String template = "Hello, %s!";
private final AtomicLong counter = new AtomicLong();
private final String provenanceExpanded = "provenanceExpanded.provn";
@Autowired
private provScoreRepo psRepo;
@RequestMapping("/greeting")
public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name) {
return new Greeting(counter.incrementAndGet(),
String.format(template, name));
}
@RequestMapping("/provrank/extract")
public String extract(@RequestParam(value="url", defaultValue="http://www.dailymail.co.uk") String url) {
metaExtractor me = new metaExtractor(InteropFramework.newXMLProvFactory(), url, "");
if(me.extract(url, me))
{
if(process(provenanceExpanded,url))
{
return "Provenance Score of "+url+" has been stored in the db. To view call the Display service.";
}
}
return "An error has occured";
}
@RequestMapping("/provrank/process")
private boolean process(@RequestParam(value="filename",defaultValue="provenanceExpanded.provn") String filename,String url){
ProcessProv processor = new ProcessProv(InteropFramework.newXMLProvFactory(),filename,url);
return processor.process(processor);
}
@RequestMapping(path="/provrank/display")
public @ResponseBody Iterable<provScore> getAllScores() {
// This returns a JSON or XML with the users
return psRepo.findAll();
}
@RequestMapping(path="/provrank/add") // Map ONLY GET Requests
public @ResponseBody String addNewUser (@RequestParam String siteName
, @RequestParam double score) {
// @ResponseBody means the returned String is the response, not a view name
// @RequestParam means it is a parameter from the GET or POST request
provScore ps = new provScore(siteName,score);
psRepo.save(ps);
return "Saved";
}
}
这是我不断遇到的错误.
Here is the error that I keep getting.
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.3.RELEASE)
2017-07-24 14:53:32.903 INFO 18060 --- [ main] hello.Application : Starting Application on DESKTOP-QL5T7CJ with PID 18060 (started by Taha Shanouha in C:\Users\Taha Shanouha\workspace\gs-rest-service-complete)
2017-07-24 14:53:32.906 INFO 18060 --- [ main] hello.Application : No active profile set, falling back to default profiles: default
2017-07-24 14:53:32.979 INFO 18060 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@29176cc1: startup date [Mon Jul 24 14:53:32 BST 2017]; root of context hierarchy
2017-07-24 14:53:33.702 INFO 18060 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'dataSource' with a different definition: replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration$Dbcp; factoryMethodName=dataSource; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Dbcp.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration$Tomcat; factoryMethodName=dataSource; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Tomcat.class]]
2017-07-24 14:53:33.726 INFO 18060 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'httpRequestHandlerAdapter' with a different definition: replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration; factoryMethodName=httpRequestHandlerAdapter; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration; factoryMethodName=httpRequestHandlerAdapter; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/data/rest/webmvc/config/RepositoryRestMvcConfiguration.class]]
2017-07-24 14:53:34.239 INFO 18060 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$b7d21d37] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2017-07-24 14:53:34.542 INFO 18060 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-07-24 14:53:34.551 INFO 18060 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2017-07-24 14:53:34.552 INFO 18060 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.14
2017-07-24 14:53:34.687 INFO 18060 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2017-07-24 14:53:34.687 INFO 18060 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1711 ms
2017-07-24 14:53:34.838 INFO 18060 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2017-07-24 14:53:34.842 INFO 18060 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-07-24 14:53:34.843 INFO 18060 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-07-24 14:53:34.843 INFO 18060 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-07-24 14:53:34.843 INFO 18060 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2017-07-24 14:53:34.885 WARN 18060 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'servicesController': Unsatisfied dependency expressed through field 'psRepo'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'hello.provScoreRepo' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
2017-07-24 14:53:34.887 INFO 18060 --- [ main] o.apache.catalina.core.StandardService : Stopping service Tomcat
2017-07-24 14:53:34.899 INFO 18060 --- [ main] utoConfigurationReportLoggingInitializer :
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-07-24 14:53:34.999 ERROR 18060 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Field psRepo in Controller.ServicesController required a bean of type 'hello.provScoreRepo' that could not be found.
Action:
考虑在您的配置中定义类型为"hello.provScoreRepo"的bean.
旁注，即时通讯使用Eclipse STS.这是我的文件夹层次结构文件夹层次结构非常感谢您的帮助.
推荐答案
我遇到了同样的问题，并使用了它:
I had the same problem and used this :
@SpringBootApplication
@EnableJpaRepositories("repository")
@EntityScan("model")
这篇关于Spring Field需要一个找不到Spring JPA类型的bean的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！