java native loadlibrary 无法加载库 - Linux fedora25 java8答案

【问题标题】：java native loadlibrary cannot load the library - Linux fedora25 java8java native loadlibrary 无法加载库 - Linux fedora25 java8
【发布时间】：2017-05-19 07:36:19
【问题描述】：

我正在尝试加载我在系统上编译的动态 c++ 库，以便在 java 中进行包装。过去我可以在 Windows 上执行此操作，但在这里我很难加载库。代码如下：

import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.Pointer;

import java.io.File;

public interface libWrapper extends Library {

//  String path = "." + File.pathSeparator + "hiddenPath/lib/Dynamic";
//  System.setProperty("java.library.path", System.getProperty("java.library.path") + File.pathSeparator + path);
//      System.setProperty("java.library.path", path + File.pathSeparator
//          + System.getProperty("java.library.path"));

libWrapper INSTANCE = (libWrapper)
        Native.loadLibrary(
                "libgtengine.so",
                libWrapper.class );

Pointer FrameCstructor(String name, long parent,
        double x, double y, double z,
        double rotX, double rotY, double rotZ,
        double vX, double vY, double vZ,
        double angVx, double angVy, double angVz,
        double accX, double accY, double accZ,
        double angAccX, double angAccY, double angAccZ,
        boolean addToFramelist);
}

我尝试用不同的方法指定库的位置，但没有成功：

1) 指定-Djava.library.path=PATHTOLIBRARY

2) 使用 System.setProperty，但这没有成功，因为我无法运行代码。我收到一个编译错误，说它找不到函数 setProperty（以及 getProperty）：错误：（16、35）java：预期

3) 将 libgteengine.so 复制到与 libWrapper 类相同的文件夹中。

我怀疑我的库有错误的架构构建？

这是我尝试使用方法 1) 和 3) 加载时收到的错误消息

java.lang.UnsatisfiedLinkError: Unable to load library 'gtengine': Native library (linux-x86-64/libgtengine.so) not found in resource path ([file:/home/ycourvoisier/Documents/Softwares/ideaIU-2017.1/idea-IU-171.3780.107/lib/idea_rt.jar, file:/home/ycourvoisier/Documents/Softwares/ideaIU-2017.1/idea-IU-171.3780.107/plugins/junit/lib/junit-rt.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/charsets.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/deploy.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/ext/cldrdata.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/ext/dnsns.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/ext/jaccess.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/ext/jfxrt.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/ext/localedata.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/ext/nashorn.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/ext/sunec.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/ext/sunjce_provider.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/ext/sunpkcs11.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/ext/zipfs.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/javaws.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/jce.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/jfr.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/jfxswt.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/jsse.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/management-agent.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/plugin.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/resources.jar, file:/home/ycourvoisier/jdk1.8.0_121/jre/lib/rt.jar, file:/home/ycourvoisier/Documents/Development/GitLocalRepo/com-enata-java-math/target/test-classes/, file:/home/ycourvoisier/Documents/Development/GitLocalRepo/com-enata-java-math/target/classes/, file:/home/ycourvoisier/.m2/repository/org/ejml/all/0.30/all-0.30.jar, file:/home/ycourvoisier/.m2/repository/org/ejml/core/0.30/core-0.30.jar, file:/home/ycourvoisier/.m2/repository/org/ejml/dense64/0.30/dense64-0.30.jar, file:/home/ycourvoisier/.m2/repository/org/ejml/denseC64/0.30/denseC64-0.30.jar, file:/home/ycourvoisier/.m2/repository/org/ejml/equation/0.30/equation-0.30.jar, file:/home/ycourvoisier/.m2/repository/org/ejml/simple/0.30/simple-0.30.jar, file:/home/ycourvoisier/.m2/repository/org/apache/commons/commons-csv/1.4/commons-csv-1.4.jar, file:/home/ycourvoisier/.m2/repository/org/glassfish/javax.json/1.0.4/javax.json-1.0.4.jar, file:/home/ycourvoisier/.m2/repository/net/java/dev/jna/jna/4.4.0/jna-4.4.0.jar, file:/home/ycourvoisier/.m2/repository/org/hibernate/hibernate-jpamodelgen/5.1.4.Final/hibernate-jpamodelgen-5.1.4.Final.jar, file:/home/ycourvoisier/.m2/repository/org/jboss/logging/jboss-logging/3.3.0.Final/jboss-logging-3.3.0.Final.jar, file:/home/ycourvoisier/.m2/repository/javax/servlet/jsp/javax.servlet.jsp-api/2.2.1/javax.servlet.jsp-api-2.2.1.jar, file:/home/ycourvoisier/.m2/repository/javax/el/el-api/2.2.1-b04/el-api-2.2.1-b04.jar, file:/home/ycourvoisier/.m2/repository/junit/junit/4.12/junit-4.12.jar, file:/home/ycourvoisier/.m2/repository/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar, file:/home/ycourvoisier/.m2/repository/org/apache/commons/commons-dbcp2/2.1.1/commons-dbcp2-2.1.1.jar, file:/home/ycourvoisier/.m2/repository/org/apache/commons/commons-pool2/2.4.2/commons-pool2-2.4.2.jar, file:/home/ycourvoisier/.m2/repository/commons-logging/commons-logging/1.2/commons-logging-1.2.jar, file:/home/ycourvoisier/.m2/repository/org/postgresql/postgresql/9.4.1212/postgresql-9.4.1212.jar, file:/home/ycourvoisier/.m2/repository/org/easymock/easymock/3.4/easymock-3.4.jar, file:/home/ycourvoisier/.m2/repository/org/objenesis/objenesis/2.2/objenesis-2.2.jar, file:/home/ycourvoisier/.m2/repository/org/slf4j/slf4j-simple/1.7.22/slf4j-simple-1.7.22.jar, file:/home/ycourvoisier/.m2/repository/org/slf4j/slf4j-api/1.7.22/slf4j-api-1.7.22.jar, file:/home/ycourvoisier/.m2/repository/org/openjdk/jmh/jmh-core/1.17.4/jmh-core-1.17.4.jar, file:/home/ycourvoisier/.m2/repository/net/sf/jopt-simple/jopt-simple/4.6/jopt-simple-4.6.jar, file:/home/ycourvoisier/.m2/repository/org/apache/commons/commons-math3/3.2/commons-math3-3.2.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-server/9.4.0.RC1/jetty-server-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/javax/servlet/javax.servlet-api/3.1.0/javax.servlet-api-3.1.0.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-http/9.4.0.RC1/jetty-http-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-io/9.4.0.RC1/jetty-io-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-jndi/9.4.0.RC1/jetty-jndi-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-util/9.4.0.RC1/jetty-util-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-maven-plugin/9.4.0.RC1/jetty-maven-plugin-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-plugin-api/3.0.3/maven-plugin-api-3.0.3.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-model/3.0.3/maven-model-3.0.3.jar, file:/home/ycourvoisier/.m2/repository/org/sonatype/sisu/sisu-inject-plexus/2.1.1/sisu-inject-plexus-2.1.1.jar, file:/home/ycourvoisier/.m2/repository/org/sonatype/sisu/sisu-inject-bean/2.1.1/sisu-inject-bean-2.1.1.jar, file:/home/ycourvoisier/.m2/repository/org/sonatype/sisu/sisu-guice/2.9.4/sisu-guice-2.9.4-no_aop.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-artifact/3.0.3/maven-artifact-3.0.3.jar, file:/home/ycourvoisier/.m2/repository/org/codehaus/plexus/plexus-utils/2.0.6/plexus-utils-2.0.6.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-core/3.0.3/maven-core-3.0.3.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-settings/3.0.3/maven-settings-3.0.3.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-settings-builder/3.0.3/maven-settings-builder-3.0.3.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-repository-metadata/3.0.3/maven-repository-metadata-3.0.3.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-model-builder/3.0.3/maven-model-builder-3.0.3.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-aether-provider/3.0.3/maven-aether-provider-3.0.3.jar, file:/home/ycourvoisier/.m2/repository/org/sonatype/aether/aether-spi/1.11/aether-spi-1.11.jar, file:/home/ycourvoisier/.m2/repository/org/sonatype/aether/aether-impl/1.11/aether-impl-1.11.jar, file:/home/ycourvoisier/.m2/repository/org/sonatype/aether/aether-api/1.11/aether-api-1.11.jar, file:/home/ycourvoisier/.m2/repository/org/sonatype/aether/aether-util/1.11/aether-util-1.11.jar, file:/home/ycourvoisier/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.14/plexus-interpolation-1.14.jar, file:/home/ycourvoisier/.m2/repository/org/codehaus/plexus/plexus-classworlds/2.4/plexus-classworlds-2.4.jar, file:/home/ycourvoisier/.m2/repository/org/codehaus/plexus/plexus-component-annotations/1.5.5/plexus-component-annotations-1.5.5.jar, file:/home/ycourvoisier/.m2/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.3/plexus-sec-dispatcher-1.3.jar, file:/home/ycourvoisier/.m2/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/plugin-tools/maven-plugin-tools-api/3.4/maven-plugin-tools-api-3.4.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-project/2.2.1/maven-project-2.2.1.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-profile/2.2.1/maven-profile-2.2.1.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-artifact-manager/2.2.1/maven-artifact-manager-2.2.1.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/wagon/wagon-provider-api/1.0-beta-6/wagon-provider-api-1.0-beta-6.jar, file:/home/ycourvoisier/.m2/repository/backport-util-concurrent/backport-util-concurrent/3.1/backport-util-concurrent-3.1.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-plugin-registry/2.2.1/maven-plugin-registry-2.2.1.jar, file:/home/ycourvoisier/.m2/repository/org/codehaus/plexus/plexus-container-default/1.0-alpha-9-stable-1/plexus-container-default-1.0-alpha-9-stable-1.jar, file:/home/ycourvoisier/.m2/repository/classworlds/classworlds/1.1-alpha-2/classworlds-1.1-alpha-2.jar, file:/home/ycourvoisier/.m2/repository/org/apache/maven/maven-plugin-descriptor/2.2.1/maven-plugin-descriptor-2.2.1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-webapp/9.4.0.RC1/jetty-webapp-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-xml/9.4.0.RC1/jetty-xml-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-servlet/9.4.0.RC1/jetty-servlet-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-quickstart/9.4.0.RC1/jetty-quickstart-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-jaas/9.4.0.RC1/jetty-jaas-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-security/9.4.0.RC1/jetty-security-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-plus/9.4.0.RC1/jetty-plus-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-jmx/9.4.0.RC1/jetty-jmx-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/jetty-annotations/9.4.0.RC1/jetty-annotations-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/javax/annotation/javax.annotation-api/1.2/javax.annotation-api-1.2.jar, file:/home/ycourvoisier/.m2/repository/org/ow2/asm/asm/5.1/asm-5.1.jar, file:/home/ycourvoisier/.m2/repository/org/ow2/asm/asm-commons/5.1/asm-commons-5.1.jar, file:/home/ycourvoisier/.m2/repository/org/ow2/asm/asm-tree/5.1/asm-tree-5.1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/websocket/javax-websocket-server-impl/9.4.0.RC1/javax-websocket-server-impl-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/websocket/javax-websocket-client-impl/9.4.0.RC1/javax-websocket-client-impl-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/javax/websocket/javax.websocket-api/1.0/javax.websocket-api-1.0.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/websocket/websocket-server/9.4.0.RC1/websocket-server-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/websocket/websocket-common/9.4.0.RC1/websocket-common-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/websocket/websocket-api/9.4.0.RC1/websocket-api-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/websocket/websocket-client/9.4.0.RC1/websocket-client-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/websocket/websocket-servlet/9.4.0.RC1/websocket-servlet-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/apache-jsp/9.4.0.RC1/apache-jsp-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/toolchain/jetty-schemas/3.1/jetty-schemas-3.1.jar, file:/home/ycourvoisier/.m2/repository/org/mortbay/jasper/apache-jsp/8.5.4/apache-jsp-8.5.4.jar, file:/home/ycourvoisier/.m2/repository/org/mortbay/jasper/apache-el/8.5.4/apache-el-8.5.4.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jdt/core/compiler/ecj/4.4.2/ecj-4.4.2.jar, file:/home/ycourvoisier/.m2/repository/org/eclipse/jetty/apache-jstl/9.4.0.RC1/apache-jstl-9.4.0.RC1.jar, file:/home/ycourvoisier/.m2/repository/org/apache/taglibs/taglibs-standard-spec/1.2.5/taglibs-standard-spec-1.2.5.jar, file:/home/ycourvoisier/.m2/repository/org/apache/taglibs/taglibs-standard-impl/1.2.5/taglibs-standard-impl-1.2.5.jar, file:/home/ycourvoisier/.m2/repository/javax/transaction/javax.transaction-api/1.2/javax.transaction-api-1.2.jar, file:/home/ycourvoisier/Documents/Softwares/ideaIU-2017.1/idea-IU-171.3780.107/lib/idea_rt.jar])

感谢您的时间和帮助

编辑

public interface libWrapper extends Library {

static String path = "." + File.pathSeparator + "/home/ycourvoisier/Documents/Development/GitLocalRepo/hydros-mathLibrary/HydrosMathLibraryCode/lib/Dynamic";
static {
    System.setProperty( "jna.library.path", path + File.pathSeparator
            + System.getProperty( "java.library.path" ) );
}


libWrapper INSTANCE = (libWrapper)
        Native.loadLibrary(
                "libgtengine.so",
                libWrapper.class );
}

这是为了使用 System.setProperty 建议的。但是java返回一个非法字符开始

EDIT2 这是一个压缩版本，应该做同样的事情，但这也不起作用。路径是直接在代码中指定的，所以不会混淆是否提供：

public class Frame {

static {
    System.setProperty( "jna.library.path", "/home/NAME/Documents/Development/GitLocalRepo/com-hidden-java-math/src" + File.pathSeparator + System.getProperty( "jna.library.path" ) );
}

public interface libWrapper extends Library {

    libWrapper INSTANCE = (libWrapper)
            Native.loadLibrary(
                    "gtengine",
                    libWrapper.class );

    Pointer FrameCstructor(String name, long parent,
            double x, double y, double z,
            double rotX, double rotY, double rotZ,
            double vX, double vY, double vZ,
            double angVx, double angVy, double angVz,
            double accX, double accY, double accZ,
            double angAccX, double angAccY, double angAccZ,
            boolean addToFramelist);
}

private Pointer ptrToCFrame;

public Frame(String name, int parent,
        double x, double y, double z,
        double rotX, double rotY, double rotZ,
        double vX, double vY, double vZ,
        double angVx, double angVy, double angVz,
        double accX, double accY, double accZ,
        double angAccX, double angAccY, double angAccZ,
        boolean addToFramelist) {

    ptrToCFrame = libWrapper.INSTANCE.FrameCstructor( name, parent,
            x, y, z, rotX, rotY, rotZ,
            vX, vY, vZ, angVx, angVy, angVz,
            accX, accY, accZ, angAccX, angAccY, angAccZ,
            addToFramelist );
    }
}

【问题讨论】：

尝试指定-Djna.library.path。
@cubrr。我刚试了一下，没有区别。谢谢
Afaik JNA（或一般的 JNI）仅适用于 C ABI。在这种情况下，您还可以尝试使用未修饰的库名称（根据规范）"gtengine"。
如果你想尝试setProperty，代码必须放在一个块内。您可以将该代码放在 static {...} 块中。
@johnVernee，它不接受带有编译错误的静态块：非法字符开头。谢谢

标签： java c++ linux jna fedora-25

【解决方案1】：

确保将文件放在 LD_LIBRARY_PATH 上。

在这里查看示例代码：

https://github.com/mkopsnc/keplerhacks/tree/master/jnijna

如果您决定切换到 JNI，请看这里：

http://jnicookbook.owsiak.org

【讨论】：

感谢您的回答。我确实从头开始尝试您的示例并且它有效，但是当我在我的程序中尝试它时它没有！我已将 LD_LIBRARY_PATH 设置为正确的值，并使用 echo 命令对其进行了检查。我有一个包含我的程序的 intellij 项目。我没有找到任何解决方案的灵感......文件路径中的破折号（-）可能是个问题吗？为什么错误描述not found in resource path中没有出现LD_LIBRARY_PATH？
对于 IntelliJ，请看这里：jnicookbook.owsiak.org/recipe-No-D002 此示例包含与 IntelliJ 中 JNI 配置相关的示例。您需要确保运行/调试配置指向正确的位置。

【解决方案2】：

库加载问题的解决方案是更改代码（这里我仍然怀疑这样做的正确方法）

public class Frame {

static {
    System.loadLibrary( "gtengine" );
}

public static native Pointer FrameCstructor(String name, long parent,
        double x, double y, double z,
        double rotX, double rotY, double rotZ,
        double vX, double vY, double vZ,
        double angVx, double angVy, double angVz,
        double accX, double accY, double accZ,
        double angAccX, double angAccY, double angAccZ,
        boolean addToFramelist);

private Pointer ptrToCFrame;

public Frame(String name, int parent,
        double x, double y, double z,
        double rotX, double rotY, double rotZ,
        double vX, double vY, double vZ,
        double angVx, double angVy, double angVz,
        double accX, double accY, double accZ,
        double angAccX, double angAccY, double angAccZ,
        boolean addToFramelist) {

    System.out.println("library: " + System.getProperty( "java.library.path" ));

    ptrToCFrame = FrameCstructor( name, parent,
            x, y, z, rotX, rotY, rotZ,
            vX, vY, vZ, angVx, angVy, angVz,
            accX, accY, accZ, angAccX, angAccY, angAccZ,
            addToFramelist );
    }
}

我必须在LD_LIBRARY_PATH 环境变量中指定库libgtengine.so.3.7（不是较短版本libgtengine.so）的路径。这是在仔细阅读@mko 成员提供的link（在视频中）后发现的。

这又造成了其他困难（UnsatisfiedLinkError undefined symbol: XOpenDisplay），我暂时保留。

谢谢

【讨论】：