Spring启动超时配置异常

Question

我正在使用Spring Boot版本2.1.9。带有Web、会话、安全、jdbc和jpa启动器的RELEASE。在我的应用程序中一切正常，直到我尝试覆盖默认会话超时值，application.properties中有以下行：

server.servlet.session.timeout=180

如果添加这一行，在启动Spring时，我会得到以下错误：

2019-12-02 17:48:17.689  INFO 12824 --- [           main] o.a.c.c.C.[.[localhost].[/webapp]        : Initializing Spring embedded WebApplicationContext 
2019-12-02 17:48:17.689  INFO 12824 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 11388 ms 
2019-12-02 17:48:17.955  WARN 12824 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt:  org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sessionRepositoryFilterRegistration' defined in class path resource [org/springframework/boot/autoconfigure/session/SessionRepositoryFilterConfiguration.class]: Unsatisfied dependency expressed through method 'sessionRepositoryFilterRegistration' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'spring.session-org.springframework.boot.autoconfigure.session.SessionProperties': Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.autoconfigure.session.SessionProperties]: Constructor threw exception; nested exception is org.springframework.boot.context.properties.ConfigurationPropertiesBindException: Error creating bean with name 'server-org.springframework.boot.autoconfigure.web.ServerProperties': Could not bind properties to 'ServerProperties' : prefix=server, ignoreInvalidFields=false, ignoreUnknownFields=true; nested exception is org.springframework.boot.context.properties.bind.BindException: Failed to bind properties under 'server.servlet.session.timeout' to java.time.Duration 
2019-12-02 17:48:17.971  INFO 12824 --- [           main] ConditionEvaluationReportLoggingListener : Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 
2019-12-02 17:48:17.971 ERROR 12824 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   :

 *************************** APPLICATION FAILED TO START
 ***************************

 Description:

 Failed to bind properties under 'server.servlet.session.timeout' to java.time.Duration:

     Property: server.servlet.session.timeout
     Value: 180
     Origin: "server.servlet.session.timeout" from property source "URL [file:C:/Users/utente/eclipse-workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/configurazioni/application.properties]"
     Reason: failed to convert java.lang.String to @org.springframework.boot.convert.DurationUnit java.time.Duration

 Action:

Update your application's configuration

我还尝试了不同的格式，如180s或PT180S，但都不起作用。根据Spring文档或同一文档的其他变体，只有整数的版本应该是正确的

可以使用应用程序进行进一步定制。属性：

src/main/resources/application。属性服务器。servlet。一场超时=#会话超时。如果未指定持续时间后缀，则将使用秒。

另一个文档页面解释了其他格式，我知道标准应该可以工作，而不需要声明bean（我知道是Spring boot本身声明了标准ConversationService，对吗？还是应该在@Configuration类中指定一些内容？）。

我真的不明白我错过了什么，请帮帮我。

编辑：我还尝试显式公开一个Application ationConversionService bean，如另一个问题中所述，但它不起作用，结果与之前完全相同。

Answer 1

好的，解决了，多亏了一个collegue：它只是值后面的一个空格（非常惊讶没有修剪空格！）