我正在尝试加载我在系统上编译的动态c ++库，以便在java中执行包装器。我过去能够在 Windows 上执行此操作，但在这里我很难加载库。这是代码：
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);
}
我尝试使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) 加载它时收到的错误消息
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 );
}
建议这样做是为了使用系统的 setProperty。但是java返回了一个非法的字符开头
这里的EDIT2是一个精简版本，应该做同样的事情，但这也不起作用。路径直接在代码中指定，因此不会混淆是否提供路径：
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 );
}
}
确保将文件放在LD_LIBRARY_PATH上。
查看此处的示例代码：
https://github.com/mkopsnc/keplerhacks/tree/master/jnijna
如果您决定切换到 JNI，请查看此处：
http://jnicookbook.owsiak.org
库加载问题的解决方案是更改代码(在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(不是较短的版本libgtengine.so)的路径。这是在仔细阅读@mko成员提供的链接(在视频中)后发现的。
这现在造成了其他困难(不满意的LinkError undefined符号：XOpenDisplay)，我保留了另一刻。
谢谢