Question

我已经使用maven创建了spring boot应用程序。我在其中为应用程序构建了一个可执行jar，并尝试使用以下命令在EC2实例自由层窗口上运行它
java -jar com-spring-boot-apps-0.0.1-SNAPSHOT.jar --server.port = 8181 -Xdebug

某些应用程序无法运行，它与控制台上的以下日志一起存在。

log4j:WARN No appenders could be found for logger (org.springframework.web.context.support.StandardServletEnvironment).
log4j:WARN Please initialize the log4j system properly.

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.3.RELEASE)

2018-07-11 13:55:50.762  INFO 2784 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2018-07-11 13:55:50.768  INFO 2784 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.31
2018-07-11 13:55:50.800  INFO 2784 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener   : Loaded APR based Apache Tomcat Native library [1.2.17] using APR version [1.6.3].
2018-07-11 13:55:50.803  INFO 2784 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener   : APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
2018-07-11 13:55:50.805  INFO 2784 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener   : APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]
2018-07-11 13:55:52.060  INFO 2784 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener   : OpenSSL successfully initialized [OpenSSL 1.0.2o  27 Mar 2018]
2018-07-11 13:55:52.402  INFO 2784 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-07-11 13:55:52.532  INFO 2784 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]

例外：-

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'regionProvider': Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.aws.core.region.StaticRegionProvider]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: The region 'ap-south-1a' is not a valid region!

Answer 1

如果启用了端点，则可以通过JMX或HTTP正确关闭应用程序（将endpoints.shutdown.enabled = true添加到application.properties文件中）。

/ shutdown-使应用程序正常关闭。（默认情况下未启用）。

从Spring boot documentation

Answer 2

您的地区名称正确吗？

https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.RegionsAndAvailabilityZones.html

Answer 3

区域“ ap-south-1a”是错误的区域。我认为它应该是“ ap-south-1”。您可以检查.aws目录中的配置文件，以查看是否正确设置了区域。还要检查环境变量AWS_DEFAULT_REGION是否正确（如果设置）。

https://docs.aws.amazon.com/general/latest/gr/rande.html

Answer 4

从application.properties和pom.xml属性中删除cloud.aws.region.static = ap-south-1a后，它为我工作。

但是同时，如果我从本地计算机项目设置中删除此属性，它将失败，并显示以下错误。

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'amazonS3': Invocation of init method failed; nested exception is java.lang.IllegalStateException: There is no EC2 meta data available, because the application is not running in the EC2 environment. Region detection is only possible if the application is running on a EC2 instance

Answer 5

commons-logging与log4j冲突。我已经多次面对这个问题，每次都将公共日志排除在外会帮助我解决此问题。推荐检查依赖树。

mvn dependency:tree > module-dependency.txt

然后在任何看到的地方都排除commons-loggin

            <exclusions>
            <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.apache</groupId>
                <artifactId>commons-io</artifactId>
            </exclusion>
        </exclusions>

Answer 6

就我而言，pom.xml 文件中缺少日志记录框架。我使用的是 spring-boot-starter-parent 版本 2.2.5.RELEASE。为了解决应用没有启动的问题，我在pom.xml中添加了如下内容：

<dependency>
        <artifactId>logback-classic</artifactId>
        <groupId>ch.qos.logback</groupId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

春季启动应用程序停止在控制台上没有任何错误

6 个答案: