spring error Keine berechtigende Bean vom Typ JdbcTemplate

Question

Ich habe eine Spring Boot-Anwendung, wo ich Datasource und JdbcTemplate manuell in meiner Konfiguration erstellen, da ich Datenquellenpasswort entschlüsseln muss.

Ich verwende Tomcat DataSource (org.apache.tomcat.jdbc.pool.DataSource) wie in Spring Boot Docs empfohlen, da ich Verbindungseigenschaften konfigurieren.

Ich schließe Autokonfiguration für Datenquelle aus (siehe Application.java), da ich eine manuell erstelle.

Application.java

// exclude datasourceAutoConfiguration since we are creating manaully creating datasource bean in AppConfig 
@SpringBootApplication 
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class}) 
public class Application { 

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

Hier ist meine application.properties Datei

jdbc.hostdb.url=jdbc:jtds:sqlserver://hello-world:1122/foobar 
host.jdbc.hostdb.username=foo 
host.jdbc.hostdb.password=encryptedPassword 
host.jdbc.hostdb.driver=net.sourceforge.jtds.jdbc.Driver 
secret=afasdfansdfsdfsd 

AppConfig.java

import org.apache.tomcat.jdbc.pool.DataSource; 

@ComponentScan("com.company.foo") 
public class AppConfig { 


    @Value("${jdbc.hostdb.driver}") 
    private String driver; 

    @Value("${jdbc.hostdb.url}") 
    private String url; 

    @Value("${jdbc.hostdb.username}") 
    private String user; 

    @Value("${jdbc.hostdb.password}") 
    private String pass; 

    @Value("${secret}") 
    private String secret; 


    @Bean 
    public DataSource datasource_mydb(Encryption encryption) { 
     DataSource ds = new DataSource(); 
     ds.setDriverClassName(hostdb_driver); 
     ds.setUrl(hostdb_url); 
     ds.setUsername(hostdb_user); 
     ds.setPassword(encryption.decrypt(hostdb_pass)); 
     return ds; 
    } 


    @Bean 
    Encryption encryption() { 
     return new Encryption(secret); 
    } 

    @Bean 
    public JdbcTemplate jdbcTemplate(DataSource dataSource) { 
     return new JdbcTemplate(dataSource); 
    } 

} 

603.210 MyRepository.java

@Repository 
public class MyRepository { 

    JdbcTemplate jdbcTemplate; 

    @Autowired 
    public MyRepository(JdbcTemplate jdbcTemplate){ 
     this.jdbcTemplate=jdbcTemplate; 
    } 
} 

, wenn ich Federbehälter zu starten, bekomme ich folgende Fehler

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'MyRepository' defined in file [/Users//Documents/codebase/my-service/build/classes/main/com/company/foo/MyRepository.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [org.springframework.jdbc.core.JdbcTemplate]: No qualifying bean of type [org.springframework.jdbc.core.JdbcTemplate] 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 [org.springframework.jdbc.core.JdbcTemplate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {} 
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:185) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1143) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1046) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) ~[spring-context-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) ~[spring-context-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.6.RELEASE.jar:1.3.6.RELEASE] 
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:760) [spring-boot-1.3.6.RELEASE.jar:1.3.6.RELEASE] 
    at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:360) [spring-boot-1.3.6.RELEASE.jar:1.3.6.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:306) [spring-boot-1.3.6.RELEASE.jar:1.3.6.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185) [spring-boot-1.3.6.RELEASE.jar:1.3.6.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174) [spring-boot-1.3.6.RELEASE.jar:1.3.6.RELEASE] 
    at com.concur.cognos.authentication.Application.main(Application.java:14) [main/:na] 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_102] 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_102] 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_102] 
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_102] 
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) [idea_rt.jar:na] 
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.jdbc.core.JdbcTemplate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {} 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:813) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741) ~[spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE] 
    ... 24 common frames omitted 

2016-07-26 1 

Answer 1

Wenn Sie @Autowired in

JdbcTemplate jdbcTemplate; 

in MyRepository Klasse hinzufügen, dann wird es funktionieren .

Unten ist der Hinweis von Ihrer Ausnahme.

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.jdbc.core.JdbcTemplate] found for dependency 

Answer 2

Das Problem ist mit den Argumenten Ihrer Bean-Definitionen. Woher würden ihre Werte kommen? Zum Beispiel -

@Bean 
public JdbcTemplate jdbcTemplate(DataSource dataSource) { 
    return new JdbcTemplate(dataSource); 
} 

Hier haben Sie nicht angegeben, wo würde Wert von dataSource Argumente kommen. Derselbe Fall von datasource_mydb Bean. Verwenden Sie @Autowire für Bean-Definitionen, um andere Beans als Eingabeargumente zu akzeptieren.

@Bean 
@Autowired 
public DataSource datasource_mydb(Encryption encryption) { 
    DataSource ds = new DataSource(); 
    ds.setDriverClassName(hostdb_driver); 
    ds.setUrl(hostdb_url); 
    ds.setUsername(hostdb_user); 
    ds.setPassword(encryption.decrypt(hostdb_pass)); 
    return ds; 
} 


@Bean 
Encryption encryption() { 
    return new Encryption(secret); 
} 

@Bean 
@Autowired 
@Qualifier("datasource_mydb") 
public JdbcTemplate jdbcTemplate(DataSource dataSource) { 
    return new JdbcTemplate(dataSource); 
}