在必问里面帮忙回答一个网友的问题: https://biwen.csdn.net/question/4664
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-07-19 10:47:22.557 ERROR 7412 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
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APPLICATION FAILED TO START
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Description:
The bean 'beanNameViewResolver', defined in class path resource [cn/afterturn/easypoi/configuration/EasyPoiAutoConfiguration.class], could not be registered. A bean with that name has already been defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/error/ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration.class] and overriding is disabled.
Action:
Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true
上面错误已经提示我们在application.ym/application.properties添加如下配置就可以解决。
spring.main.allow-bean-definition-overriding=true
spring.main.allow-bean-definition-overriding设置为true,表示后发现的bean会覆盖之前相同名称的bean。
但是添加这个配置无效,启动仍然提示上面错误。
然后启动spring boot报错信息,数据源配置错误:Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
这已经说明spring已经正确读取到 spring.main.allow-bean-definition-overriding 。初步怀疑spring没有读取带application.yml 配置。
可以看到数据源配置信息,在启动参数里面 spring.datasource.url 可以读到,但 spring.datasource.username 和 spring.datasource.password 没有读取到。
明确问题原因:spring无法读取application.yml配置。
由于没有注意springboot启动的提示信息: No active profile set , 但在application.yml已经指明sprin.profiles.active=test. 这就已经说明了spring没有正确读取到application.yml配置。
查看编译后的目录结构,结果 application.yml是在 BOOT-INF/classes目录下,导致在idea启动时候,spring无法正常读取到application.yml.