java.lang.ClassNotFoundException : org. jpos.iso.ISOException 异常

Question

我是使用 JPOS 和 ISO8583 的初学者。此时，我尝试使用 Spring 在我的应用程序中构建使用 JPOS 的请求，并将其发送到 BASE24。

这里是我的构建代码:

public class BuildISO {

    public void sentISOMsg(String hostname, int portNumber) {

    // Create Packager based on XML that contain DE type
    GenericPackager packager;
    ASCIIChannel channel;

    try {
        packager = new GenericPackager("packager/iso93ascii.xml");
        channel = new ASCIIChannel(hostname, portNumber, packager);

        ISOMUX isoMux = new ISOMUX(channel) {
            @Override
            protected String getKey(ISOMsg m) throws ISOException {
                return super.getKey(m);
            }
        };

        new Thread(isoMux).start();

        // Create ISO Message
        ISOMsg isoRequest = new ISOMsg(); 
        isoRequest.setMTI("1800");
        isoRequest.set(3, "123456");
        isoRequest.set(7, new SimpleDateFormat("yyyyMMdd").format(new Date()));
        isoRequest.set(11, "000001");
        isoRequest.set(12, new SimpleDateFormat("HHmmss").format(new Date()));
        isoRequest.set(13, new SimpleDateFormat("MMdd").format(new Date()));
        isoRequest.set(48, "Tutorial ISO 8583 Dengan Java");
        isoRequest.set(70, "001");

        ISORequest req = new ISORequest(isoRequest);
        isoMux.queue(req);

        ISOMsg isoReply = req.getResponse(50*1000);

        if (isoReply != null) {
            System.out.println("Req ["+new String(isoRequest.pack()) + "]");
            System.out.println("Res ["+new String(isoReply.pack()) + "]");
        }


        // print the DE list
        logISOMsg(isoRequest);

        // Get and print the output result
        byte[] data = isoRequest.pack();
        System.out.println("RESULT : " + new String(data));
    } catch (ISOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

    private static void logISOMsg(ISOMsg msg) {

    System.out.println("----ISO MESSAGE-----");
    try {
        System.out.println("  MTI : " + msg.getMTI());
        for (int i=1;i<=msg.getMaxField();i++) {
            if (msg.hasField(i)) {
                System.out.println("    Field-"+i+" : "+msg.getString(i));
            }
        }
    } catch (ISOException e) {
        e.printStackTrace();
    } finally {
        System.out.println("--------------------");
    }
}
}

接下来，当我想在这里调用那个类时:

public @ResponseBody ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
    String hostname = request.getParameter("hostname");
    int portNumber = Integer.parseInt(request.getParameter("portNumber"));

    System.out.println("handleRequest... : " + hostname + " : " + portNumber);

    BuildISO buildISO = new BuildISO();
    buildISO.sentISOMsg(hostname, portNumber);

    return null;
}

我遇到这样的错误:

SEVERE: Servlet.service() for servlet spring threw exception
java.lang.ClassNotFoundException: org.jpos.iso.ISOException
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1645)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491)
    at org.sprint.controller.HandleController.handleRequest(HandleController.java:28)
    at org.sprint.controller.HandleController$$FastClassByCGLIB$$fc3d18c.invoke(<generated>)
    at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
    at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    at org.springframework.aop.interceptor.CustomizableTraceInterceptor.invokeUnderTrace(CustomizableTraceInterceptor.java:256)
    at org.springframework.aop.interceptor.AbstractTraceInterceptor.invoke(AbstractTraceInterceptor.java:110)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)
    at org.sprint.controller.HandleController$$EnhancerByCGLIB$$fbdc3830.handleRequest(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:722)

我搜索了 StackOverflow 已经提出的问题，但没有发现任何对项目进行更改的情况。所以我现在感到非常沮丧，因为我实际上什么都没改变，我的项目已经停止工作。请帮助我，任何想法将不胜感激。

Answer 1

您应该确保在 CLASSPATH 中拥有所有 jar。在您的例子中，它是 jpos.jar。而且它们(使用 Spring)都应该使用相同的 classloader 加载。

还有一个建议:将 -verbose 选项添加到 java(我猜是 Tomcat)以查看从何处加载您的类。