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我有一個名爲FaceDetection.java的java文件，它有一個名爲FaceDetectionMain的函數，它帶有兩個參數。java文件沒有任何主函數。現在我在我的這個java類文件函數中調用jsp頁面是這樣的：在jsp中調用java函數頁面
，但我得到一個例外如下：
Apr 21, 2014 10:44:23 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [jsp] in context with path [/SharedCrpto1] threw exception [Unable to compile class for JSP:
An error occurred at line: 90 in the jsp file: /uploadwebcamimage.jsp
FaceDetection cannot be resolved
87: fos.write(imageData);
88: String imagepath=filesstore+"\\"+imagename+".png";
89:
90: Boolean flag=FaceDetection.FaceDetectionMain(imagepath,imagename);
91: %>
92: </body>
93: </html>
Stacktrace:] with root cause
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 90 in the jsp file: /uploadwebcamimage.jsp
FaceDetection cannot be resolved
87: fos.write(imageData);
88: String imagepath=filesstore+"\\"+imagename+".png";
89:
90: Boolean flag=FaceDetection.FaceDetectionMain(imagepath,imagename);
91: %>
92: </body>
93: </html>
請幫我刪除此例外。 異常完整堆棧跟蹤是：
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:97)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:457)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:374)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:352)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:339)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:594)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:344)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:399)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:317)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:204)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:182)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:311)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
找不到'FaceDetection'，但也許你明白嗎？ – keyser
@ᴋᴇʏsᴇʀ但是爲什麼？FaceDetection java文件存在於我的默認包中。 – user3522121
@ᴋᴇʏsᴇʀ你是什麼意思？我沒有找到你 – user3522121