...

examcloud-core-basic-api-provider/src/main/java/cn/com/qmth/examcloud/core/basic/api/controller/StudentController.java

@@ -228,7 +228,7 @@ public class StudentController extends ControllerSupport {
 		if (StringUtils.isEmpty(newPassword)) {
 			throw new StatusException("B-450111", "新密码为空");
 		}
-		if (newPassword.matches("[a-zA-Z0-9]{6,18}")) {
+		if (!newPassword.matches("[a-zA-Z0-9]{6,18}")) {
 			throw new StatusException("B-450111", "密码必须为6至18位字母和数字组合");
 		}