fix:app定向询价bug修复

src/main/java/com/uas/platform/b2b/model/PurchaseInquiryItem.java

@@ -6,6 +6,7 @@ import com.uas.platform.core.model.Constant;
 import com.uas.platform.core.model.Status;
 import org.codehaus.jackson.annotate.JsonIgnore;
 import org.springframework.util.CollectionUtils;
+import org.springframework.util.StringUtils;
 
 import javax.persistence.*;
 import java.util.*;
@@ -583,7 +584,11 @@ public class PurchaseInquiryItem extends AbstractOrderProduct {
 	}
 
 	public Short getOverdue() {
-		return check(this.inquiry.getEndDate());
+		if (StringUtils.isEmpty(this.inquiry.getEndDate())) {
+			return 0;
+		} else {
+			return check(this.inquiry.getEndDate());
+		}
 	}
 
 	public void setOverdue(Short overdue) {
@@ -591,7 +596,11 @@ public class PurchaseInquiryItem extends AbstractOrderProduct {
 	}
 
 	public Short getInvalid() {
-		return check(this.toDate);
+		if(StringUtils.isEmpty(this.toDate)) {
+			return 0;
+		} else {
+			return check(this.toDate);
+		}
 	}
 
 	public void setInvalid(Short invalid) {