找不到依赖库javacv [英] can't find dependent library javacv
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问题描述
我有此代码:
package javacv;
import static com.googlecode.javacv.cpp.opencv_core.*;
import static com.googlecode.javacv.cpp.opencv_imgproc.*;
import static com.googlecode.javacv.cpp.opencv_highgui.*;
import javax.swing.JOptionPane;
/**
*
* @author (Mahdi)
*/
public class JavaCv {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
try {
IplImage img = cvLoadImage("mehdi.jpg");
cvShowImage("Hellow", img);
cvSmooth(img, img, CV_GAUSSIAN, 13);
cvShowImage("Blur", img);
cvWaitKey();
cvReleaseImage(img);
} catch (Exception e) {
JOptionPane.showMessageDialog(null, e.getMessage());
}
}
}
运行后抛出此异常:
Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Users\(Mahdi)\AppData\Local\Temp\javacpp66820482987315\jniopencv_core.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1939)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1864)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1825)
at java.lang.Runtime.load0(Runtime.java:792)
at java.lang.System.load(System.java:1059)
at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:566)
at com.googlecode.javacpp.Loader.load(Loader.java:489)
at com.googlecode.javacpp.Loader.load(Loader.java:431)
at com.googlecode.javacv.cpp.opencv_core.<clinit>(opencv_core.java:136)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:266)
at com.googlecode.javacpp.Loader.load(Loader.java:453)
at com.googlecode.javacv.cpp.opencv_imgproc.<clinit>(opencv_imgproc.java:97)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:266)
at com.googlecode.javacpp.Loader.load(Loader.java:453)
at com.googlecode.javacv.cpp.opencv_highgui.<clinit>(opencv_highgui.java:85)
at javacv.JavaCv.main(JavaCv.java:23)
Caused by: java.lang.UnsatisfiedLinkError: no opencv_core244 in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1860)
at java.lang.Runtime.loadLibrary0(Runtime.java:845)
at java.lang.System.loadLibrary(System.java:1084)
at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:593)
at com.googlecode.javacpp.Loader.load(Loader.java:481)
... 11 more
Java Result: 1
有什么主意吗?
推荐答案
Java试图在$ {java.library.path}中查找所需的dll,但未定义. 所以你应该:
Java is trying to find required dlls in ${java.library.path} but it is not defined. So you should:
- 在%PATH%中设置opencv_java244.dll的位置(例如"c:\ opencv \ build \ java \ x64 \").
- 在项目目录中创建"lib"目录.
- 放入此处:
- javacpp.jar
- javacv.jar
- javacv-windows-x86_64.jar
- opencv-2.4.4-windows-x86_64.jar
- opencv-244.jar
- Set location of opencv_java244.dll in %PATH% ("c:\opencv\build\java\x64\" for example).
- Create in your project dir "lib" dir.
- Put there:
- javacpp.jar
- javacv.jar
- javacv-windows-x86_64.jar
- opencv-2.4.4-windows-x86_64.jar
- opencv-244.jar
如果平台的位数为32,则使用* x86.jar版本.
If your platform's bitness is 32 then use *x86.jar versions.
然后您可以使用opencv/samples/java/ant/中的此修改过的ant脚本来运行您的应用程序:
And then you may use this modified ant script from opencv/samples/java/ant/ to run your app:
<project name="JavaCv" basedir="." default="rebuild-run">
<property name="src.dir" value="src"/>
<property name="lib.dir" value="lib"/>
<path id="classpath">
<fileset dir="${lib.dir}" includes="**/*.jar"/>
</path>
<property name="build.dir" value="build"/>
<property name="classes.dir" value="${build.dir}/classes"/>
<property name="jar.dir" value="${build.dir}/jar"/>
<property name="main-class" value="${ant.project.name}"/>
<target name="clean">
<delete dir="${build.dir}"/>
</target>
<target name="compile">
<mkdir dir="${classes.dir}"/>
<javac includeantruntime="false" srcdir="${src.dir}" destdir="${classes.dir}" classpathref="classpath"/>
</target>
<target name="jar" depends="compile">
<mkdir dir="${jar.dir}"/>
<jar destfile="${jar.dir}/${ant.project.name}.jar" basedir="${classes.dir}">
<manifest>
<attribute name="Main-Class" value="${main-class}"/>
</manifest>
</jar>
</target>
<target name="run" depends="jar">
<java fork="true" classname="${main-class}">
<classpath>
<path refid="classpath"/>
<path location="${jar.dir}/${ant.project.name}.jar"/>
</classpath>
</java>
</target>
<target name="rebuild" depends="clean,jar"/>
<target name="rebuild-run" depends="clean,run"/>
或者您可以像这样在ant脚本中定义$ {java.library.path}:
Or you may define ${java.library.path} in your ant script like this:
<target name="run" depends="jar">
<java fork="true" classname="${main-class}">
<sysproperty key="java.library.path" path="PUT_YOUR_PATH_HERE"/>
<classpath>
<path refid="classpath"/>
<path location="${jar.dir}/${ant.project.name}.jar"/>
</classpath>
</java>
</target>
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