春のプロパティファイルのマップを作成します。

Question

私は春4を使用しています。私は自分のプロパティファイルからBeanとしてマップを作成して、起動中にロードします。私はいくつかの例を説明しましたが、Environmentは@PropertySourceで記述されたプロパティファイルを保持していると理解しました。だから私は以下のようなものを書いたが、正しいものではないことがBeanの作成に間違いを投げる。誰かが正しい方向に私を指すことができ

プロパティファイル：

abc=xyz 

bca=ppp 

acs=pkl 

プロパティファイルリーダー：

@Configuration 
@PropertySource("classpath:flash.properties") 
public class FlashConfig { 

    @Autowired 
    private Environment env; 

    @Bean 
    public String getProperty(String key) { 
     if (env.containsProperty(key)) { 
      return env.getProperty(key); 
     } else { 
      String msg = " flash property not found for the key: " + key; 
      throw new InternalServerErrorException(CPContractUtil.getProblemDetail(
        CPContractExceptionCodes.INTERNAL_SERVER_ERROR, msg)); 
     } 
    } 

} 

スタックトレース：

04:31:11.542 [localhost-startStop-1] ERROR org.springframework.web.servlet.DispatcherServlet - Context initialization failed 
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'getProperty' defined in class path resource [ com/akamai/cpcontract/util/FlashConfig.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [java.lang.String]: : No  qualifying bean of type [java.lang.String] 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 [java.lang.String] 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-4.1.4.RELEASE.jar:4.1.4. RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:464) ~[spring-beans-4.1.4.RELEASE. jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1111)  ~[spring-beans-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1006) ~[spring- beans-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) ~[spring-beans-4.1 .4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) ~[spring-beans-4.1.4 .RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) ~[spring-beans-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.1.4.RELEASE. jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) ~[spring-beans-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) ~[spring-beans-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:762) ~[spring-beans-4.1.4. RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) ~[spring-context-4.1. 4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) ~[spring-context-4.1.4.RELEASE.jar:4.1.4. RELEASE] 
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663) ~[spring-webmvc-4.1.4.RELEASE.jar:4. 1.4.RELEASE] 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:629) ~[spring-webmvc-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:677) ~[spring-webmvc-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:548) ~[spring-webmvc-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489) [spring-webmvc-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) [spring-webmvc-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at javax.servlet.GenericServlet.init(GenericServlet.java:158) [servlet-api.jar:3.1.FR] 
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1231) [catalina.jar:8.0.23] 
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1144) [catalina.jar:8.0.23] 
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1031) [catalina.jar:8.0.23] 
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4914) [catalina.jar:8.0.23] 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5201) [catalina.jar:8.0.23] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:8.0.23] 
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) [catalina.jar:8.0.23] 
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) [catalina.jar:8.0.23] 
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) [catalina.jar:8.0.23] 
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:945) [catalina.jar:8.0.23] 
    at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1768) [catalina.jar:8.0.23] 
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_45] 
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_45] 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_45] 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_45] 
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_45] 
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [java.lang.String] 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:1308) ~[spring- beans-4.1.4.RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054) ~[spring-beans-4.1.4. RELEASE.jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:949) ~[spring-beans-4.1.4.RELEASE. jar:4.1.4.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:813) ~[spring-beans-4.1.4.RELEASE.jar:4.1 .4.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741) ~[spring-beans-4.1.4.RELEASE.jar:4.1.4. RELEASE] 
    ... 35 more 

Answer 1

@Bean 
public static Map<String, Object> allProperties() { 
    Map<String, Object> rtn = new HashMap<>(); 
    if (env instanceof ConfigurableEnvironment) { 
     for (PropertySource<?> propertySource : ((ConfigurableEnvironment) env).getPropertySources()) { 

      if (propertySource instanceof EnumerablePropertySource) { 
       for (String key : ((EnumerablePropertySource) propertySource).getPropertyNames()) { 
        rtn.put(key, propertySource.getProperty(key)); 
       } 
      } 
     } 
    } 
    return rtn; 
}