diff --git a/ruoyi-admin/src/main/java/com/ruoyi/system/controller/WeChatController.java b/ruoyi-admin/src/main/java/com/ruoyi/system/controller/WeChatController.java
index a27a7a7..69f160b 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/system/controller/WeChatController.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/system/controller/WeChatController.java
@@ -16,6 +16,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 import javax.annotation.Resource;
+import javax.validation.Valid;
 
 /**
  * 微信签名
@@ -53,7 +54,7 @@ public class WeChatController extends BaseController {
      */
     @ApiOperation("获取微信二维码")
     @PostMapping("/findWxCode")
-    public AjaxResult findWxCode(@RequestBody WeChatCodeRequest req) {
+    public AjaxResult findWxCode(@Valid @RequestBody WeChatCodeRequest req) {
 
         return AjaxResult.success(weChatService.findWxCode(req));
     }
diff --git a/ruoyi-admin/src/main/java/com/ruoyi/system/mapper/BShanghuMapper.java b/ruoyi-admin/src/main/java/com/ruoyi/system/mapper/BShanghuMapper.java
index 0810385..b29963f 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/system/mapper/BShanghuMapper.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/system/mapper/BShanghuMapper.java
@@ -91,4 +91,11 @@ public interface BShanghuMapper {
      * @return 商户信息
      */
     BShanghu findByPhone(@Param("phoneNumber") String phoneNumber);
+
+    /**
+     * 删除广告商户关联
+     *
+     * @param posterId 广告id
+     */
+    void editByPosterId(@Param("posterId") Long posterId);
 }
diff --git a/ruoyi-admin/src/main/java/com/ruoyi/system/service/IBShanghuService.java b/ruoyi-admin/src/main/java/com/ruoyi/system/service/IBShanghuService.java
index e7fcc62..030da9d 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/system/service/IBShanghuService.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/system/service/IBShanghuService.java
@@ -1,6 +1,5 @@
 package com.ruoyi.system.service;
 
-import com.ruoyi.common.core.domain.entity.SysUser;
 import com.ruoyi.system.domain.BShanghu;
 
 import java.util.List;
@@ -87,8 +86,16 @@ public interface IBShanghuService {
 
     /**
      * 根据手机号查询商户
+     *
      * @param phoneNumber 手机号
      * @return 商户信息
      */
     BShanghu findByPhone(String phoneNumber);
+
+    /**
+     * 删除广告商户关联
+     *
+     * @param posterId 广告id
+     */
+    void editByPosterId(Long posterId);
 }
diff --git a/ruoyi-admin/src/main/java/com/ruoyi/system/service/impl/BPosterServiceImpl.java b/ruoyi-admin/src/main/java/com/ruoyi/system/service/impl/BPosterServiceImpl.java
index a338e79..eaa41df 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/system/service/impl/BPosterServiceImpl.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/system/service/impl/BPosterServiceImpl.java
@@ -115,6 +115,11 @@ public class BPosterServiceImpl implements IBPosterService {
         if (BeanUtil.isEmpty(bPoster)) {
             throw new ServiceException("所选广告不存在");
         }
+        if (CollectionUtil.isEmpty(req.getShanghuIds()) && StrUtil.isEmpty(req.getShanghuCity()) && StrUtil.isEmpty(req.getShanghuName())) {
+            throw new ServiceException("商户不能为空");
+        }
+        // 删除广告商户关联
+        shanghuService.editByPosterId(req.getPosterId());
         if (CollectionUtil.isNotEmpty(req.getShanghuIds())) {
             shanghuService.editPostIdByIds(req.getPosterId(), req.getShanghuIds());
             return;
diff --git a/ruoyi-admin/src/main/java/com/ruoyi/system/service/impl/BShanghuServiceImpl.java b/ruoyi-admin/src/main/java/com/ruoyi/system/service/impl/BShanghuServiceImpl.java
index 5552d14..8260d7e 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/system/service/impl/BShanghuServiceImpl.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/system/service/impl/BShanghuServiceImpl.java
@@ -170,4 +170,14 @@ public class BShanghuServiceImpl implements IBShanghuService {
     public BShanghu findByPhone(String phoneNumber) {
         return bShanghuMapper.findByPhone(phoneNumber);
     }
+
+    /**
+     * 删除广告商户关联
+     *
+     * @param posterId 广告id
+     */
+    @Override
+    public void editByPosterId(Long posterId) {
+        bShanghuMapper.editByPosterId(posterId);
+    }
 }
diff --git a/ruoyi-admin/src/main/resources/mapper/netEwm/BShanghuMapper.xml b/ruoyi-admin/src/main/resources/mapper/netEwm/BShanghuMapper.xml
index ec4bd54..1292e87 100644
--- a/ruoyi-admin/src/main/resources/mapper/netEwm/BShanghuMapper.xml
+++ b/ruoyi-admin/src/main/resources/mapper/netEwm/BShanghuMapper.xml
@@ -116,6 +116,12 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         </where>
     </update>
 
+    <update id="editByPosterId">
+        update b_shanghu
+        set poster_id = null
+        where poster_id = #{posterId}
+    </update>
+
 
     <delete id="deleteBShanghuById" parameterType="Long">
         delete from b_shanghu where id = #{id}