Quartz配置任务报错 Job class must implement the Job

Joker316701882 2016-07-28 04:13:31

最近在做一个java web小框架，功能是从web页面上传一个jar包，并输入需要执行的这个包里的类的方法和执行时间，服务器动态加载这个包，通过Quartz启动这个jar包里的任务。
这是用来上传的jar包里的类



public class MainJob implements Job {



	@Override

	public void execute(JobExecutionContext arg0) throws JobExecutionException {

		System.out.println("Job excuting...");

	}

}

下面是用来响应上传动作的servlet

	public void doGet(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException {

			String job_file=(String) request.getAttribute("job_file");

			String job_name=(String) request.getAttribute("job_name");

			String job_trigger=(String) request.getAttribute("job_trigger");

			String job_group=(String) request.getAttribute("job_group");

			URL[] urls = new URL[] {};

	        MyClassLoader classLoader = new MyClassLoader(urls, null);

	        classLoader.addJar(new URL("file:D:/tomcat/apache-tomcat-7.0.70/webapps/hyde-parachute-jobupload/WEB-INF/upload/"+job_file));

				try {

					Class<? extends Job> clazz =(Class<? extends Job>)  classLoader.loadClass((String) request.getAttribute("job_class"));

					System.out.println(clazz.toString());

					for (Object o:clazz.getGenericInterfaces())

					{	

						System.out.println(o.toString());

					}

			        //SetQuartzJob 实例化的调度器为scheduler

					



					JobDetail job = JobBuilder.newJob(clazz)

			        	    .withIdentity("job1", "group1")

			        	    .build();

			        CronTrigger trigger = TriggerBuilder.newTrigger()

			        	    .withIdentity("trigger1", "group1")

			        	    .withSchedule(CronScheduleBuilder.cronSchedule("0/1 * * * * ?"))

			        	    .build();

			        	scheduler.scheduleJob(job, trigger);

			        	scheduler.start();



				} catch (ClassNotFoundException e) {

					// TODO Auto-generated catch block

					e.printStackTrace();

				} catch (SchedulerException e) {

					// TODO Auto-generated catch block

					e.printStackTrace();

				}

	           

				

	            

	            classLoader.close();

	            request.getRequestDispatcher("/message.jsp").forward(request, response);

	}

主要是红色的那一块，我明明已经通过classload动态加载了上传的jar包，并且那个包里的MainJob是实现了job接口的。但是
newJob（）在执行时总是抛出异常
严重: Servlet.service() for servlet [UploadHandleServlet] in context with path [/hyde-parachute-jobupload] threw exception
java.lang.IllegalArgumentException: Job class must implement the Job interface.
at org.quartz.impl.JobDetailImpl.setJobClass(JobDetailImpl.java:311)
at org.quartz.JobBuilder.build(JobBuilder.java:103)
at com.classloader.DynamicLoadJar.doGet(DynamicLoadJar.java:79)
at com.classloader.DynamicLoadJar.doPost(DynamicLoadJar.java:116)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
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.ApplicationDispatcher.invoke(ApplicationDispatcher.java:747)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:485)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:410)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:337)
at com.upload.UploadHandleServlet.doGet(UploadHandleServlet.java:120)
at com.upload.UploadHandleServlet.doPost(UploadHandleServlet.java:125)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
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:218)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1082)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:623)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2517)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2506)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
绿色的代码段已经打印出来了这个clazz确实实现了job接口，以下是打印内容：
interface org.quartz.Job
。所以出现这个运行时错误很不能理解，希望哪位大神能够解答，不胜感激！

...全文