从属性文件 Spring 4.0 初始化变量

【问题标题】：Initializing variable from a properties file Spring 4.0从属性文件 Spring 4.0 初始化变量
【发布时间】：2015-07-31 03:54:10
【问题描述】：

我是 Spring 4.0 的新手

我想使用注解 @Value 从我的属性文件中读取数据

以下是放置在 D:/GmlcConfig.propertise 的属性文件

gmlccount=10

我的 Web Config.java 如下

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "com.nextnav.lcs" })
public class WebConfig extends WebMvcConfigurerAdapter{

    @Autowired
    private Environment env;

    @Bean(initMethod = "init",  destroyMethod = "cleanUp")
    public AutoInitalizer myAutoInitalizer(){
        return new AutoInitalizer();
    }

    @Bean
    public static PropertyPlaceholderConfigurer properties(){
      PropertyPlaceholderConfigurer ppc = new PropertyPlaceholderConfigurer();
      return ppc;
    }


}

并且在 Autoinitalizer 中，我确实有一个变量可以访问属性文件中的值。

AutoInitializer 的代码如下：

@Component
@Configuration
@PropertySource("File:D:/GmlcConf.propertise")
public class AutoInitalizer {
    @Autowired
    @Qualifier("loggingService")
    private LoggingServiceImpl loggingService;

    @Autowired
    @Qualifier("mGmlc")
    private GmlcConfigDi mGmlc;

    @Value("${gmlccount}")
    private String numConfGmlcCount;


    public void init(){

        loggingService.logInfo(this.getClass().getSimpleName() + "Application initalized");
        loggingService.logInfo(this.getClass().getSimpleName() + numConfGmlcCount);
     }
}

我没有在它为空的日志中获取 numConfGmlcCount 的值。

我得到以下异常

INFO: Initializing Spring FrameworkServlet 'dispatcher'
[INFO ] 2015-07-31 09:54:26.159 [localhost-startStop-1] DispatcherServlet - FrameworkServlet 'dispatcher': initialization started
[INFO ] 2015-07-31 09:54:26.165 [localhost-startStop-1] AnnotationConfigWebApplicationContext - Refreshing WebApplicationContext for namespace 'dispatcher-servlet': startup date [Fri Jul 31 09:54:26 I
[INFO ] 2015-07-31 09:54:26.197 [localhost-startStop-1] AnnotationConfigWebApplicationContext - Registering annotated classes: [class com.nextnav.lcs.config.WebConfig]
[INFO ] 2015-07-31 09:54:26.407 [localhost-startStop-1] AutowiredAnnotationBeanPostProcessor - JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
[WARN ] 2015-07-31 09:54:26.461 [localhost-startStop-1] AnnotationConfigWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'autoInitalizer': Injection of autowired dependencies failed; nested exception is org.springframework.beans.facto
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:326) ~[spring-beans-4.1.0.RELEASE.jar:4
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1204) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) ~[spring-context-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) [spring-context-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658) [spring-webmvc-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:530) [spring-webmvc-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484) [spring-webmvc-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) [spring-webmvc-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at javax.servlet.GenericServlet.init(GenericServlet.java:160) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1091) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5176) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5460) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at java.util.concurrent.FutureTask.run(FutureTask.java:262) [?:1.7.0_65]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [?:1.7.0_65]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [?:1.7.0_65]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_65]
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String com.nextnav.lcs.AutoInitalizer.numConfGmlcCount; nested exception is java.lang.Il
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:542) ~[spring-beans-4.1.0.RELEASE.ja
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:323) ~[spring-beans-4.1.0.RELEASE.jar:4
        ... 26 more
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'gmlccount' in string value "${gmlccount}"
        at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:174) ~[spring-core-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126) ~[spring-core-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.config.PropertyPlaceholderConfigurer$PlaceholderResolvingStringValueResolver.resolveStringValue(PropertyPlaceholderConfigurer.java:259) ~[spring-beans-4.1.
        at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:800) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:917) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:904) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:514) ~[spring-beans-4.1.0.RELEASE.ja
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:323) ~[spring-beans-4.1.0.RELEASE.jar:4
        ... 26 more
[ERROR] 2015-07-31 09:54:26.479 [localhost-startStop-1] DispatcherServlet - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'autoInitalizer': Injection of autowired dependencies failed; nested exception is org.springframework.beans.facto
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:326) ~[spring-beans-4.1.0.RELEASE.jar:4
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1204) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) ~[spring-context-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) ~[spring-context-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658) ~[spring-webmvc-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:530) ~[spring-webmvc-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484) [spring-webmvc-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) [spring-webmvc-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at javax.servlet.GenericServlet.init(GenericServlet.java:160) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1091) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5176) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5460) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) [tomcat-embed-core-7.0.47.jar:7.0.47]
        at java.util.concurrent.FutureTask.run(FutureTask.java:262) [?:1.7.0_65]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [?:1.7.0_65]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [?:1.7.0_65]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_65]
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String com.nextnav.lcs.AutoInitalizer.numConfGmlcCount; nested exception is java.lang.Il
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:542) ~[spring-beans-4.1.0.RELEASE.ja
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:323) ~[spring-beans-4.1.0.RELEASE.jar:4
        ... 26 more
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'gmlccount' in string value "${gmlccount}"
        at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:174) ~[spring-core-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126) ~[spring-core-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.config.PropertyPlaceholderConfigurer$PlaceholderResolvingStringValueResolver.resolveStringValue(PropertyPlaceholderConfigurer.java:259) ~[spring-beans-4.1.
        at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:800) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:917) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:904) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:514) ~[spring-beans-4.1.0.RELEASE.ja
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) ~[spring-beans-4.1.0.RELEASE.jar:4.1.0.RELEASE]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:323) ~[spring-beans-4.1.0.RELEASE.jar:4
        ... 26 more
Jul 31, 2015 9:54:26 AM org.apache.catalina.core.ApplicationContext log
SEVERE: StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'autoInitalizer': Injection of autowired dependencies failed; nested exception is org.springframework.beans.facto
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:326)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1204)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
        at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
        at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:530)
        at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
        at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
        at javax.servlet.GenericServlet.init(GenericServlet.java:160)
        at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280)
        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1091)
        at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5176)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5460)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String com.nextnav.lcs.AutoInitalizer.numConfGmlcCount; nested exception is java.lang.Il
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:542)
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:323)
        ... 26 more
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'gmlccount' in string value "${gmlccount}"
        at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:174)
        at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126)
        at org.springframework.beans.factory.config.PropertyPlaceholderConfigurer$PlaceholderResolvingStringValueResolver.resolveStringValue(PropertyPlaceholderConfigurer.java:259)
        at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:800)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:917)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:904)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:514)
        ... 28 more

Jul 31, 2015 9:54:26 AM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /LCSCLIENT threw load() exception
java.lang.IllegalArgumentException: Could not resolve placeholder 'gmlccount' in string value "${gmlccount}"
        at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:174)
        at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126)
        at org.springframework.beans.factory.config.PropertyPlaceholderConfigurer$PlaceholderResolvingStringValueResolver.resolveStringValue(PropertyPlaceholderConfigurer.java:259)
        at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:800)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:917)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:904)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:514)
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:323)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1204)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
        at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
        at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:530)
        at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
        at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
        at javax.servlet.GenericServlet.init(GenericServlet.java:160)
        at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280)
        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1091)
        at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5176)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5460)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)

【问题讨论】：

  • GmlcConfig.properties，不应该是GmlcConfig.properties吗？
  • 请分享您的应用程序上下文。

标签： java spring spring-mvc annotations


【解决方案1】：

在 application-context.xml 上添加此配置并将属性文件放在类路径位置。

<beans:bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="properties" ref="appProperties" />
</beans:bean>

<bean id="appProperties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
    <property name="singleton" value="true" />
    <property name="ignoreResourceNotFound" value="true" />
    <property name="locations">
        <list>
           <value>classpath:GmlcConfig.properties</value>
        </list>
    </property>
</bean>

在你想要属性文件的值的地方使用这个

@Autowired
@Value("#{appProperties.gmlccount}")
private String gmlccount;

希望这些东西能奏效。

【讨论】：

  • 我想通过java配置
【解决方案2】：

将您的属性文件导入为 ("file:D:/GmlcConf.properties")。

自动连线

私有环境环境；

在你的课堂上。

如下读取属性文件：

env.getProperty("属性值的传递键"); 例如 如果名称 = abc 在属性文件中获取为：

env.getProperty(名称)

愉快的编码...

【讨论】：

  • 没有解决的问题是解析配置文件没有读取
  • 文件属性值中不能有空格，请检查属性文件。
  • 属性文件没问题
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