支持菜单修改时图标可置空。

ruoyi-modules/ruoyi-system/src/main/resources/mapper/system/SysMenuMapper.xml

@@ -149,7 +149,7 @@
 			<if test="visible != null">visible = #{visible},</if>
 			<if test="status != null">status = #{status},</if>
 			<if test="perms !=null">perms = #{perms},</if>
-			<if test="icon !=null and icon != ''">icon = #{icon},</if>
+			icon = #{icon},
 			<if test="remark != null and remark != ''">remark = #{remark},</if>
 			<if test="updateBy != null and updateBy != ''">update_by = #{updateBy},</if>
 			update_time = sysdate()

ruoyi-ui/src/views/system/menu/index.vue

@@ -139,7 +139,7 @@
                 @show="$refs['iconSelect'].reset()"
               >
                 <IconSelect ref="iconSelect" @selected="selected" :active-icon="form.icon" />
-                <el-input slot="reference" v-model="form.icon" placeholder="点击选择图标" readonly>
+                <el-input slot="reference" v-model="form.icon" placeholder="点击选择图标" clearable>
                   <svg-icon
                     v-if="form.icon"
                     slot="prefix"