update

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

@@ -19,7 +19,7 @@ public class TeacherDefaultPracticeGroupSalary {
 	private Integer minutes;
 	
 	/**  */
-	private BigDecimal mainTeacherSalary;
+	private BigDecimal mainTeacherSalary = BigDecimal.ZERO;
 	
 	/**  */
 	private BigDecimal assistantTeacherSalary;