不满意链接错误：org。opencv。海吉。海吉。imread_0（OpenCV Java）

Question

我试图在servlet中使用OpenCV，每次运行servlet时都会弹出这个错误。以下是相同的stacktrace：

SEVERE: Servlet.service() for servlet [com.patternrecognition.preprocessing.Preprocessing] in context with path     **[/ImagePreprocessing] threw exception [Servlet execution threw an exception] with root cause
java.lang.UnsatisfiedLinkError: org.opencv.highgui.Highgui.imread_0(Ljava/lang/String;I)J
at org.opencv.highgui.Highgui.imread_0(Native Method)
at org.opencv.highgui.Highgui.imread(Highgui.java:309)**
at com.patternrecognition.preprocessing.Preprocessing.smooth(Preprocessing.java:168)
at com.patternrecognition.preprocessing.Preprocessing.startPreprocessing(Preprocessing.java:56)
at com.patternrecognition.preprocessing.Preprocessing.doGet(Preprocessing.java:46)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)

我的项目没有时间了。请帮忙

Answer 1

我通过使用“imread”方法读取的图像的绝对路径解决了这个问题。因为它是一个web项目，所以没有采用默认项目文件夹的相对路径

我在做：

Highgui.imread("img_perspective.png", Highgui.CV_LOAD_IMAGE_GRAYSCALE);

我把它改成：

Highgui.imread("C:/Users/ImagePreprocessing/WebContent/WEB-INF/img_perspective.png", Highgui.CV_LOAD_IMAGE_GRAYSCALE);

希望能有帮助

Answer 2

您不满意的链接错误很可能是由于服务器不了解文件系统上适当的共享对象的位置

JVM需要有opencv jar、opencv java共享对象和opencv共享库

这取决于您的容器和操作系统

您可能希望查看设置“java.library.path”或LD_library_path