SpringBoot：运行的System.loadLibrary两次

问题描述：

我春天引导应用程序版本1.5.3.RELEASESpringBoot：运行的System.loadLibrary两次

在主类我称之为的System.loadLibrary：

@SpringBootApplication 
@EnableScheduling 
public class BlaApplication { 

    static { 
     System.out.println("xxxxxxxxxxxxxxxxxx Loading Lib"); 
     System.loadLibrary(Core.NATIVE_LIBRARY_NAME); 
    } 

    public static void main(String[] args) { 

    SpringApplication.run(BlaApplication.class, args); 
    } 
}

当应用程序启动System.loadLibrary被调用两次：

xxxxxxxxxxxxxxxxxx Loading Lib 
11:10:51.766 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Included patterns for restart : [] 
11:10:51.771 [main] DEBUG org.springframework.boot.devtools.settings.DevToolsSettings - Excluded patterns for restart : [/spring-boot-starter/target/classes/, /spring-boot-autoconfigure/target/classes/, /spring-boot-starter-[\w-]+/, /spring-boot/target/classes/, /spring-boot-actuator/target/classes/, /spring-boot-devtools/target/classes/] 
11:10:51.771 [main] DEBUG org.springframework.boot.devtools.restart.ChangeableUrls - Matching URLs for reloading : [file:/Users/tomas/workspace/formater/formater-backend/target/classes/] 
xxxxxxxxxxxxxxxxxx Loading Lib 
Exception in thread "restartedMain" java.lang.UnsatisfiedLinkError: Native Library /usr/local/Cellar/opencv/2.4.13.2/share/OpenCV/java/libopencv_java2413.dylib already loaded in another classloader 
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1907) 
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1857) 
at java.lang.Runtime.loadLibrary0(Runtime.java:870) 
at java.lang.System.loadLibrary(System.java:1122) 
at com.martoma.BlaApplication.<clinit>(BlaApplication.java:16) 
...

为什么它被调用两次？

可能有另一个类在运行时加载库。如果你删除这个加载，库是否加载？ – davidxxx

但问题是，这个特定的静态块运行两次 - 如果我把记录器上面System.loadLibrary（...）我有2个日志在控制台 –

如果我删除System.loadLibrary（...），lib不加载应用程序和OpenCV上的任何调用失败 –

答

解决的办法是把System.loadLibrary（Core.NATIVE_LIBRARY_NAME）;在它自己的配置类中：

@Configuration 
public class LibLoading { 
    static { 
     System.loadLibrary(Core.NATIVE_LIBRARY_NAME); 
    } 
}

谢谢你 – mesutpiskin

SpringBoot：运行的System.loadLibrary两次

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