创建bean时出错-Spring Boot

Question

I love Spring Boot , I really do! I'm using Spring-Boot 1.4.1, Java 8 and MongoDB , and I have the following classes defined.

package builds;

import java.util.List;

import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface BuildsRepository extends MongoRepository<Build, String> {

    List<Build> findByProvider(String provider);

    List<Build> findByDeployer(String deployer);
}

Then the model Builds :

package builds;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;

import org.bson.types.ObjectId;
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;

import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import com.google.gson.Gson;

@Document(collection = "builds")
public class Build {

    @Id
    @JsonSerialize(using = ToStringSerializer.class)
    private String id;
    private String date;

    @NotNull
    @Size(min=2)
    private String configuration;

    @NotNull
    private String provider;

    @NotNull
    private String deployer;

    @NotNull
    @Min(0)
    private Integer instances;

    public Build() {
    }

    public Build(String configuration, Integer instances, String provider, String deployer) {
        this.id = new ObjectId().toHexString();
        DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
        this.date = dateFormat.format(new Date());
        this.configuration = configuration;
        this.provider = provider;
        this.instances = instances;
        this.deployer = deployer;
    }

    public Integer getInstances() {
        return this.instances;
    }

    public void setInstances(Integer instances) {
        this.instances = instances;
    }

    public String getProvider() {
        return this.provider;
    }

    public void setProvider(String provider) {
        this.provider = provider;
    }

    public void setDeployer(String deployer) {
        this.deployer = deployer;
    }

    public String getDeployer() {
        return this.deployer;
    }

    public String getDate() {
        return this.date;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public String getConfiguration() {
        return this.configuration;
    }

    public void setConfiguration(String configuration) {
        this.configuration = configuration;
    }

    @Override
    public String toString() {
        Gson gson = new Gson();
        return gson.toJson(this);
    }
}

Finally, I'm using Build and BuildRepository in the BuildsController :

package tools;

@Controller
public class BuildsController {

    private final static Logger logger = Logger.getLogger(BuildsController.class);

    @Autowired
    private BuildsRepository buildsRepository;

    public BuildsController() {
    }

    /*
     * Add the builds url page
     */
    @GetMapping("/builds")
    public String index(Model model) {
        model.addAttribute("build", new Build());
        return "builds";
    }

    /**
     * 
     * @param object
     * @return
     */
    @PostMapping("/builds")
    public Build deploy(@ModelAttribute Build build) {
        this.buildsRepository.save(build);
        return build;
    }
}

However, for every model either as Document or Service I create in the similar fashion, I already get the same error, so I believe there must be a configuration problem:

    Caused by: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'buildsController': Unsatisfied dependency expressed through field 'buildsRepository': No qualifying bean of type [builds.BuildsRepository] found for dependency [builds.BuildsRepository]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [builds.BuildsRepository] found for dependency [builds.BuildsRepository]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Application startup failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'buildsController': Unsatisfied dependency expressed through field 'buildsRepository': No qualifying bean of type [builds.BuildsRepository] found for dependency [builds.BuildsRepository]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [builds.BuildsRepository] found for dependency [builds.BuildsRepository]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:569) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:776) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:313) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
    at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:111) [spring-boot-test-1.4.0.RELEASE.jar:1.4.0.RELEASE]
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:189) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:131) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191) [spring-test-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137) [junit-4.12.jar:4.12]
    at org.junit.runner.JUnitCore.run(JUnitCore.java:115) [junit-4.12.jar:4.12]
    at org.testng.junit.JUnit4TestRunner.start(JUnit4TestRunner.java:81) [testng-6.9.8.jar:?]
    at org.testng.junit.JUnit4TestRunner.run(JUnit4TestRunner.java:69) [testng-6.9.8.jar:?]
    at org.testng.TestRunner$1.run(TestRunner.java:689) [testng-6.9.8.jar:?]
    at org.testng.TestRunner.runWorkers(TestRunner.java:1014) [testng-6.9.8.jar:?]
    at org.testng.TestRunner.privateRunJUnit(TestRunner.java:720) [testng-6.9.8.jar:?]
    at org.testng.TestRunner.run(TestRunner.java:621) [testng-6.9.8.jar:?]
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:359) [testng-6.9.8.jar:?]
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:354) [testng-6.9.8.jar:?]
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:312) [testng-6.9.8.jar:?]
    at org.testng.SuiteRunner.run(SuiteRunner.java:261) [testng-6.9.8.jar:?]
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52) [testng-6.9.8.jar:?]
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86) [testng-6.9.8.jar:?]
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1191) [testng-6.9.8.jar:?]
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1116) [testng-6.9.8.jar:?]
    at org.testng.TestNG.run(TestNG.java:1024) [testng-6.9.8.jar:?]
    at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:115) [surefire-testng-2.18.1.jar:2.18.1]
    at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.executeMulti(TestNGDirectoryTestSuite.java:212) [surefire-testng-2.18.1.jar:2.18.1]
    at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.execute(TestNGDirectoryTestSuite.java:108) [surefire-testng-2.18.1.jar:2.18.1]
    at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:111) [surefire-testng-2.18.1.jar:2.18.1]
    at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:203) [surefire-booter-2.18.1.jar:2.18.1]
    at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:155) [surefire-booter-2.18.1.jar:2.18.1]
    at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103) [surefire-booter-2.18.1.jar:2.18.1]
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [builds.BuildsRepository] found for dependency [builds.BuildsRepository]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1406) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1057) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1019) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566) ~

My Application class is pretty simple:

package tools;

@SpringBootApplication
@EnableMongoRepositories(basePackages = "tools")
public class Application implements CommandLineRunner {

    /* Use the User collections */
    @Autowired
    private UserRepository repository;

    public final static Logger logger = Logger.getLogger(Application.class);

    public static void main(String[] args) throws Throwable {
        SpringApplication.run(Application.class, args);
    }

    @Override
    public void run(String... args) throws Exception {

        this.repository.deleteAll();
        // ..
    }
 }

Could someone give me clue how to fix it? I've been too much snakebitten by this lately.

*Edit I added @EnableMongoRepositories(basePackages = "tools") to the Application.java class.

Answer 1

Issue is that Application class is in the tools package while other beans are in builds package. They are at same level. Therefore, auto configuration only applies to tools package and all packages made within tools package. In order to make everything work, move Application class ie in default package (one package level above builds package) or into builds package (at same level as other beans) and everything should work. In that case, you won't even need @EnableMongoRepositories annotation since @SpringBootApplication annotation is enabling auto configuration.

Answer 2

I believe you are missing annotation @EnableMongoRepositories in your controller class

@EnableMongoRepositories(basePackages="tools")

Answer 3

I could see that your package name for repository and model class is builds . So, give the package name as shown below to enable the repositories

@EnableMongoRepositories(basePackages = "builds")