修复bug

src/main/java/com/yipin/liuwanr/mapper/ExperimentalClassMapper.java

@@ -20,7 +20,7 @@ public interface ExperimentalClassMapper {
 			+ "VALUES(#{studentId},#{intExperimentalClassId})")
 	void experimentClassAddStudent(Student student);
 	
-	@Delete("DELETE from experimental_class_student where studentId = #{studentId} and experimentalClassId = #{intExperimentalClassId}")
+	@Delete("DELETE from experimental_class_student where studentId = #{studentId} and experimentalClassId = #{experimentalClassId}")
 	void experimentClassDeleteStudent(Student student);
 	
 	//创建实验班级