update

mec-biz/src/main/java/com/ym/mec/biz/dal/entity/MusicGroup.java

@@ -187,7 +187,9 @@ public class MusicGroup {
 	}
 
 	public void setPaymentValidEndDate(String paymentValidEndDate) {
-		if(StringUtils.isNotEmpty(paymentValidEndDate)){
+		if(StringUtils.isEmpty(paymentValidEndDate)){
+			this.paymentValidEndDate = null;
+		}else {
 			this.paymentValidEndDate = paymentValidEndDate;
 		}
 	}

mec-biz/src/main/java/com/ym/mec/biz/dal/entity/MusicGroupPaymentCalender.java

@@ -115,7 +115,11 @@ public class MusicGroupPaymentCalender implements Comparable<MusicGroupPaymentCa
 	}
 
 	public void setPaymentValidEndDate(String paymentValidEndDate) {
-		this.paymentValidEndDate = paymentValidEndDate;
+		if(StringUtils.isEmpty(paymentValidEndDate)){
+			this.paymentValidEndDate = null;
+		}else {
+			this.paymentValidEndDate = paymentValidEndDate;
+		}
 	}
 
 	public String getStudentIds() {