Ich fand ähnliche Probleme erklärt viele Web-Portale. Aber ich denke, das ist eine einzigartige Situation. Ich erhalte im Frühjahr eine Fehlermeldung.

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'testController' defined in file [C:\Program Files (x86)\sts-bundle\pivotal-tc-server-developer-3.1.2.RELEASE\base-instance\wtpwebapps\ExpT1\WEB-INF\classes\com\expt\controller\TestController.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [com.expt.repositories.CategoryRepository]: No qualifying bean of type [com.expt.repositories.CategoryRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.expt.repositories.CategoryRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
    org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749)
    org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:185)

.....

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.expt.repositories.CategoryRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
    org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373)

Der Code ist unten angegeben. Ich denke, dass genug Code kopiert wurde. Bitte helfen Sie mir zu verstehen, was fehlt und wie ich dieses Problem beheben kann. Jede Hilfe wäre toll ... !! Code: Appinitializer:

package com.expt.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;


public class AppInitialzer extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        // TODO Auto-generated method stub
        return new Class[]{SpringAppContInit.class, SQLDevDataSource.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        // TODO Auto-generated method stub
        return new Class[]{WebMvcConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        // TODO Auto-generated method stub
        return new String[]{"/"};
    }

}

SQLDEVConfig:

package com.expt.config;

import javax.sql.DataSource;

import org.apache.commons.dbcp.BasicDataSource;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;

@Configuration
@Profile("SQLDev")
@EnableJpaRepositories(basePackages={"com.expt.repositories"})
public class SQLDevDataSource extends AbstractJpaConfig {

    @Override
    public DataSource getDataSource() {
        // TODO Auto-generated method stub
        return createBasicDataSource("jdbc:jtds:sqlserver://LOCAL:1433/MYDB;", "net.sourceforge.jtds.jdbc.Driver", "UNMA", "PWD123");
    }
    public BasicDataSource createBasicDataSource(String jdbcUrl, String driverClass, String userName, String password) {
        BasicDataSource dataSource = new BasicDataSource();
        dataSource.setUrl(jdbcUrl);
        dataSource.setDriverClassName(driverClass);
        dataSource.setUsername(userName);
        dataSource.setPassword(password);
        return dataSource;
    }

}

SpringAPpContInit:

package com.expt.config;

import org.springframework.context.ApplicationContextInitializer;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;

public class SpringAppContInit implements ApplicationContextInitializer<AnnotationConfigWebApplicationContext> {

    @Override
    public void initialize(AnnotationConfigWebApplicationContext applicationContext) {
        // TODO Auto-generated method stub
        ConfigurableEnvironment configEnv = applicationContext.getEnvironment();
        configEnv.addActiveProfile("SQLDev");
    }

}

AbstrackJpaConfig:

   package com.expt.config;

import java.util.HashMap;
import java.util.Map;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.spi.PersistenceProvider;
import javax.sql.DataSource;

import org.hibernate.dialect.SQLServer2008Dialect;
import org.hibernate.jpa.HibernatePersistenceProvider;
import org.springframework.context.annotation.Bean;
import org.springframework.orm.jpa.JpaDialect;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.JpaVendorAdapter;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;

import com.expt.domain.Category;

public abstract class AbstractJpaConfig {

    public abstract DataSource getDataSource();

    @Bean(name="entityManagerFactory")
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource){
        Map<String, String> properties = new HashMap<String, String>();
        properties.put(org.hibernate.cfg.Environment.HBM2DDL_AUTO, "validate");
        properties.put(org.hibernate.cfg.Environment.DIALECT, SQLServer2008Dialect.class.getName());
        properties.put(org.hibernate.cfg.Environment.SHOW_SQL, "true");

        LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
        em.setDataSource(dataSource);
        //em.setPackagesToScan(Expense.class.getPackage().getName());
        em.setPackagesToScan(Category.class.getPackage().getName());
        //em.setPersistenceProvider(new HibernatePersistenceProvider());
        em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
        em.setJpaPropertyMap(properties);       
        return em;
    }

    @Bean(name = "transactionManager")
    public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
        return new JpaTransactionManager(entityManagerFactory);
    }
}

Regler

package com.expt.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.expt.domain.Category;
import com.expt.repositories.CategoryRepository;

@RestController
@RequestMapping("/test")
public class TestController {

    CategoryRepository catRepo;

    @Autowired
    public TestController(CategoryRepository catRepo) {
        this.catRepo = catRepo;
    }

    /*private CategoryService catSvc;

    @Autowired
    public TestController(CategoryService catSvc) {
        this.catSvc = catSvc;
    }*/

    @RequestMapping("/simple")
    public String test(){
        return "testing";
    }

    @RequestMapping("/json")
    public Iterable<Category> testJ(){
        return catRepo.findAll();
    }
}

CategoryRepository:

package com.expt.repositories;

import java.math.BigDecimal;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;

import com.expt.domain.Category;

@Repository
public interface CategoryRepository extends JpaRepository<Category, BigDecimal> {

}

============================================= ========

EDIT: (Da viele Kommentare hinzugefügt wurden, sollten auch diese Details hinzugefügt werden.)

Ich beziehe mich auf dashttps: //github.com/scottfrederick/spring-musi. Welches nutzt daspublic class AppInitializer implements WebApplicationInitializer für Appinitializer.

Full Code ist hier, was ich in meinem alten Projekt verwendet habe. Dadurch werden die Konfigurationsklassen manuell registriert, und es hat funktioniert. Aber es ist nicht erforderlich, wenn wir von @ verlängeAbstractAnnotationConfigDispatcherServletInitializer.

   public class AppInitializer implements WebApplicationInitializer{

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        // TODO Auto-generated method stub
        configureAppContextInitializers(servletContext, SpringAppContInit.class.getName());

        AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
        rootContext.register(RepositoryConfig.class);
        servletContext.addListener(new ContextLoaderListener(rootContext));

        AnnotationConfigWebApplicationContext webContext = new AnnotationConfigWebApplicationContext();
        webContext.register(WebMvcConfig.class);

        DispatcherServlet dispatcherServlet = new DispatcherServlet(webContext);
        ServletRegistration.Dynamic dispatcher = servletContext.addServlet("dispatcher", dispatcherServlet);
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/");
    }

    private void configureAppContextInitializers(ServletContext container, String... initClassNames) {
        String initializerClasses = container.getInitParameter(ContextLoader.CONTEXT_INITIALIZER_CLASSES_PARAM);

        String delimitedClassNames = StringUtils.arrayToDelimitedString(initClassNames, " ");

        if (StringUtils.hasText(initializerClasses)) {
            initializerClasses += " " + delimitedClassNames;
        }
        else {
            initializerClasses = delimitedClassNames;
        }

        container.setInitParameter(ContextLoader.CONTEXT_INITIALIZER_CLASSES_PARAM, initializerClasses);
    }
}

Im Falle vonAbstractAnnotationConfigDispatcherServletInitializer, die MethodengetRootConfigClasses undgetServletConfigClasses die Registrierung implizit durchführen. Jetzt suche ich nach dem Grund, warum mein oben genannter Code nicht funktioniert. Ich habe eine Problemumgehung, die funktioniert, wenn ich auf XMLs oder @ zurückgreifWebApplicationInitializer. Ich suche nach einer Lösung und einem Grund, wenn möglich, mit aktualisiertem Code anstelle eines API-Dokuments. Ich brauche ein Tutorial. Das API-Dokument hilft mir nicht, das Problem zu beheben.