From af0e0a110e7187bf008655f7510199a0c0b25ec4 Mon Sep 17 00:00:00 2001 From: Nymph2333 <498092988@qq.com> Date: 星期一, 10 四月 2023 14:27:40 +0800 Subject: [PATCH] newInstance() 已弃用,使用clazz.getDeclaredConstructor().newInstance() This method propagates any exception thrown by the nullary constructor, including a checked exception. Use of this method effectively bypasses the compile-time exception checking that would otherwise be performed by the compiler. The Constructor.newInstance method avoids this problem by wrapping any exception thrown by the constructor in a (checked) InvocationTargetException. The call clazz.newInstance() can be replaced by clazz.getDeclaredConstructor().newInstance() The latter sequence of calls is inferred to be able to throw the additional exception types InvocationTargetException and NoSuchMethodException. Both of these exception types are subclasses of ReflectiveOperationException. --- ruoyi-system/src/main/resources/mapper/system/SysUserMapper.xml | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/ruoyi-system/src/main/resources/mapper/system/SysUserMapper.xml b/ruoyi-system/src/main/resources/mapper/system/SysUserMapper.xml index 9f1839c..3c1c6c5 100644 --- a/ruoyi-system/src/main/resources/mapper/system/SysUserMapper.xml +++ b/ruoyi-system/src/main/resources/mapper/system/SysUserMapper.xml @@ -130,8 +130,8 @@ where u.user_id = #{userId} </select> - <select id="checkUserNameUnique" parameterType="String" resultType="int"> - select count(1) from sys_user where user_name = #{userName} and del_flag = '0' limit 1 + <select id="checkUserNameUnique" parameterType="String" resultMap="SysUserResult"> + select user_id, user_name from sys_user where user_name = #{userName} and del_flag = '0' limit 1 </select> <select id="checkPhoneUnique" parameterType="String" resultMap="SysUserResult"> -- Gitblit v1.9.2