...

src/main/java/cn/com/qmth/examcloud/web/config/SystemProperties.java

@@ -65,6 +65,10 @@ public class SystemProperties {
 			throw new ExamCloudRuntimeException("fail to make temp data dir. path=" + tempDataDir);
 		}
 
+		System.setProperty("sys.dataDir", dataDir);
+		System.setProperty("sys.tempDataDir", tempDataDir);
+		System.setProperty("sys.logDir", logDir);
+
 	}
 
 	public String getDataDir() {