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如何将Spring Boot application.properties外部化到tomcat / lib文件夹

作者:互联网

我需要一个免配置,可部署的war,myapp1.war,它可以从tomcat / lib文件夹中检索配置文件.
由于我有其他Web应用程序共存于同一个Tomcat:myapp2.war,myapp3.war,我需要这个布局:

tomcat/lib/myapp1/application.properties
tomcat/lib/myapp2/application.properties
tomcat/lib/myapp3/application.properties

通过这种方式,我可以在战争中构建war文件而不需要任何属性文件,并在任何服务器上部署.

我已经阅读了Spring documentation,但它解释了如何在作为jar运行时设置位置:

java -jar myapp.jar --spring.config.location=classpath:/default.properties,classpath:/override.properties

对于多个共存战争文件的情况,我无法弄清楚如何做到这一点.

我想知道这是否可行,还是应该放弃Spring Boot并回到传统的Spring MVC应用程序.

解决方法:

解决方案可能是将application- {profile} .properties加载为@PropertySource注释,如question所示,但随后日志系统将无法工作,如您在documentation中所见.

The logging system is initialized early in the application lifecycle
and as such logging properties will not be found in property files
loaded via @PropertySource annotations.

这意味着您在application- {profiles} .properties中的日志记录属性如:

logging.config=classpath:myapp1/logback.xml
logging.path = /path/to/logs
logging.file = myapp1.log

将被忽略,日志系统不会工作.

为了解决这个问题,我在配置应用程序时使用SpringApplicationBuilder.properties()方法在开头加载属性.在那里,我设置了Spring Boot使用的’spring.config.location’来加载所有application- {profiles} .properties:

public class Application extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder springApplicationBuilder) {
        return springApplicationBuilder
                .sources(Application.class)
                .properties(getProperties());
    }

    public static void main(String[] args) {

        SpringApplicationBuilder springApplicationBuilder = new SpringApplicationBuilder(Application.class)
                .sources(Application.class)
                .properties(getProperties())
                .run(args);
    }

   static Properties getProperties() {
      Properties props = new Properties();
      props.put("spring.config.location", "classpath:myapp1/");
      return props;
   }
}

然后我将属性文件从src / main / resources移动到src / main / resources / myapp1

.
├src
| └main
|   └resources
|     └myapp1
|       └application.properties
|       └application-development.properties
|       └logback.xml
└─pom.xml

在pom.xml中,我必须将嵌入式tomcat库的范围设置为“提供”.
此外,要从最终的战争中排除src / main / resources / myapp1中的所有属性文件,并生成一个配置免费,可部署的战争:

    <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>2.6</version>
        <configuration>
            <failOnMissingWebXml>false</failOnMissingWebXml>
            <packagingExcludes>
              **/myapp1/
            </packagingExcludes>
        </configuration>
    </plugin>

然后在Tomcat我有

├apache-tomcat-7.0.59
 └lib
   ├─myapp1
   |  └application.properties        
   |  └logback.xml
   └─myapp2
     └application.properties
     └logback.xml

现在我可以生成配置免费战争并将其放入apache-tomcat-7.0.59 / webapps文件夹中.将使用类路径解析属性文件,每个webapp都是独立的:

   apache-tomcat-7.0.59/lib/myapp1
   apache-tomcat-7.0.59/lib/myapp2
   apache-tomcat-7.0.59/lib/myapp3

标签:java,spring-boot,tomcat,maven-3
来源: https://codeday.me/bug/20190923/1815109.html