求大佬帮忙看下，文件参数不能为空，怎么解决

Question

Exception starting filter JFinal
java.lang.IllegalArgumentException: Parameter of file can not be blank
at com.jfinal.config.JFinalConfig.loadPropertyFile(JFinalConfig.java:83)
at com.chinatowercom.SCService.run.JfinalConfig.configConstant(JfinalConfig.java:90)
at com.jfinal.core.Config.configJFinal(Config.java:46)
at com.jfinal.core.JFinal.init(JFinal.java:67)
at com.jfinal.core.JFinalFilter.init(JFinalFilter.java:49)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:105)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4950)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5652)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1700)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1690)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

Answer 1

在代码前打印或者debug下，看看file.exists() file.length()正常吗。有可能读错路径，你打印看看就知道了