vector4wang
commented
7 years ago 抱歉，周末出去旅游了，今天才看到~ [Could not resolve placeholder 'spark.app.name' in string value "${spark.app.name}"]原因是spring容器加载类ApplicationConfig里的属性appName的时候，没有对应的值也就是@Value("${spark.app.name}")注解没值，你检查下resources/application.properties里是否有以下配置 server.port=8008
spark.app.name=springbootspark spark.home=D:\extrajars\spark-2.1.0-bin-hadoop2.6\spark-2.1.0-bin-hadoop2.6 spark.master.uri=local[3]
你好！ 今天在使用您的代码，在启动时出现了如下问题（spark分支）：2017-05-19 20:11:51,986 WARN AnnotationConfigEmbeddedWebApplicationContext:546 - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'applicationConfig': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String com.spark.config.ApplicationConfig.appName; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spark.app.name' in string value "${spark.app.name}" 2017-05-19 20:11:51,996 INFO StandardService:180 - Stopping service Tomcat 2017-05-19 20:11:52,020 ERROR SpringApplication:827 - Application startup failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'applicationConfig': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String com.spark.config.ApplicationConfig.appName; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spark.app.name' in string value "${spark.app.name}" at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) 抱歉我对java系的东西不太熟悉 能帮我看下这是什么问题吗