将dependecy添加到Maven并设置为$ CATALINA_HOME/shared/lib [英] Add dependecy to Maven and set to $CATALINA_HOME/shared/lib

问题描述

我在Web项目中使用Matlab MCR，所以我将这些依赖项导入pom.xml

I'm using Matlab MCR in web project so I imported these dependecies to pom.xml

<!-- Matlab client tool library -->
    <!--  <dependency>
            <groupId>DataConcatenation</groupId>
            <artifactId>DataConcatenation</artifactId>
            <version>0.0.5-SNAPSHOT</version>
        </dependency> -->
<!--        <dependency>
            <groupId>DataConcatenator</groupId>
            <artifactId>DataConcatenator</artifactId>
            <version>0.0.5-SNAPSHOT</version>
        </dependency> -->
<!--        <dependency>
            <groupId>DataConversion</groupId>
            <artifactId>DataConversion</artifactId>
            <version>0.0.5-SNAPSHOT</version>
        </dependency> -->
        <dependency>
            <groupId>DataConverter</groupId>
            <artifactId>DataConverter</artifactId>
            <version>0.0.5-SNAPSHOT</version>
            <exclusions>
                <exclusion>
                    <artifactId>DataConcatenation</artifactId>
                    <groupId>DataConcatenation</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>DataConcatenator</artifactId>
                    <groupId>DataConcatenator</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>DataConversion</artifactId>
                    <groupId>DataConversion</groupId>
                </exclusion>
            </exclusions>
        </dependency> 

第一个问题是，即使我仅使用DataConverter，我也必须排除其他树相关性，但是我只需要dataConverter，并且此库没有其他依赖项. 第二个也是最重要的问题是此错误:

The first problems is that I have to exclude the other tree dependencies even if I use only DataConverter, But I need only dataConverter and this library doesn't have other dependecies. The second and most important problem is this error:

Threw exception in ZipAndMat::createZipAndMat: java.lang.UnsatisfiedLinkError: Native Library /usr/v81/bin/glnxa64/libnativedl.so already loaded in another classloader

我阅读了很多指南，并且我了解我必须将这个jar放入$ CATALINA_HOME/shared/lib中，以便所有类加载器共享同一个jar. 但是，如何在上面的路径中添加这种依赖呢?这是我第一次实现此配置.我在服务器上使用tomcat并通过war文件部署项目. 谢谢

I read a lot of guide and I understand that I have to put this jar into $CATALINA_HOME/shared/lib so all the class loader share the same jar. But how can I add this dependecy to the above path? This is the first time that I have to implement this configuration. I use tomcat on my server and deploy project through war file. Thanks

推荐答案

您可以将罐子放入$CATALINA_HOME/shared/lib，然后在

You can place the jar into $CATALINA_HOME/shared/lib, and then specify in your POM the dependency's <scope> as provided:

<dependency>
        <groupId>DataConverter</groupId>
        <artifactId>DataConverter</artifactId>
        <version>0.0.5-SNAPSHOT</version>
        <scope>provided</scope>
        <exclusions>
            ...
        </exclusions>
    </dependency> 

此方法通常用于在Tomcat上运行时包含 JDBC驱动程序的jar；将jdbc jar放在$CATALINA_HOME/shared/lib中(因此所有 WAR 都可以找到它) )，但每个项目列表都将JDBC jar作为依赖项，并以provided作为范围.

This method is often used for jars which contain JDBC drivers when running on Tomcat; the jdbc jar is placed in $CATALINA_HOME/shared/lib (so all WARs can find it), yet each project list’s the JDBC jar as a dependency with provided as the scope.

有关更多信息，请参见这篇文章 provided上的信息.

See this post for more information on provided.

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