diff --git a/src/main/java/io/v/nutz/hd/controller/wmhd/mobile/StaffActivitiesCon.java b/src/main/java/io/v/nutz/hd/controller/wmhd/mobile/StaffActivitiesCon.java
index 5a64395..64fa4ef 100644
--- a/src/main/java/io/v/nutz/hd/controller/wmhd/mobile/StaffActivitiesCon.java
+++ b/src/main/java/io/v/nutz/hd/controller/wmhd/mobile/StaffActivitiesCon.java
@@ -85,11 +85,13 @@ public class StaffActivitiesCon {
             sbxx.setAuditState(flag ? "4400" : "3999");
             Hd_wm_sbxx insert = hdWmsbxxService.insert(sbxx);
 
-            for (TempFile file : files) {
-                fileService.upload(file, insert.getId(), "/hd/hdwm/");
+            // 保存时可能没有上传附件，避免空文件数组导致提交接口异常。
+            if (files != null) {
+                for (TempFile file : files) {
+                    fileService.upload(file, insert.getId(), "/hd/hdwm/");
+                }
             }
 
-
             return Result.success().addMsg("上传成功！");
         } catch (Exception e) {
             e.printStackTrace();
diff --git a/src/main/resources/views/platform/hd/wmhd/mobile/staffActivities.html b/src/main/resources/views/platform/hd/wmhd/mobile/staffActivities.html
index e1224a8..adf2e04 100644
--- a/src/main/resources/views/platform/hd/wmhd/mobile/staffActivities.html
+++ b/src/main/resources/views/platform/hd/wmhd/mobile/staffActivities.html
@@ -264,7 +264,7 @@
                         <p class="van-doc-demo-block__title" style="margin-top: 5px;color: red">
                             (如同时参加以下多个活动，或有多个主题，请分别提交)</p>
                     </div>
-                    <van-tabs :color="boxData.hdcolor" type="card" v-model="formData.hdlb_i">
+                    <van-tabs :color="boxData.hdcolor" @change="hdlbChange" type="card" v-model="formData.hdlb_i">
                         <van-tab :name="i" :title="lb.lname" v-for="lb,i in boxData.lbs">
                             <div v-if="formData.hdlb_i==i">
                                 <!--      <van-field style="padding-top: 30px" maxlength="15"
@@ -594,10 +594,27 @@
         },
         methods: {
             zplbClick(val, fd, i) {
-                this.chooseLb = val
-                fd[i].zplb = val.zid;
-                fd[i].zplb_name = val.zname;
-                this.showPicker = false
+                this.$set(this, 'chooseLb', val)
+                this.$set(fd[i], 'zplb', val.zid)
+                this.$set(fd[i], 'zplb_name', val.zname)
+                this.$set(this, 'showPicker', false)
+            },
+            hdlbChange(i) {
+                this.setDefaultZplb(i)
+            },
+            setDefaultZplb(i) {
+                const lb = this.boxData.lbs && this.boxData.lbs[i]
+                if (lb && lb.zplbs && lb.zplbs.length > 0) {
+                    const val = this.fd[i].zplb ? lb.zplbs.find(o => o.zid === this.fd[i].zplb) : lb.zplbs[0]
+                    this.$set(this, 'chooseLb', val || {})
+                    if (!this.fd[i].zplb && val) {
+                        // 默认选择第一个作品类别，保证对应上传配置可以立即生效。
+                        this.$set(this.fd[i], 'zplb', val.zid)
+                        this.$set(this.fd[i], 'zplb_name', val.zname)
+                    }
+                } else {
+                    this.$set(this, 'chooseLb', {})
+                }
             },
             activeChange() {
                 if (this.subDis) {
@@ -658,11 +675,17 @@
                         this.$toast.fail("请您选择要上传的作品！")
                         return
                     }*/
-                    if (this.chooseLb.isUploadPhoto === true || this.chooseLb.isUploadOther === true || this.chooseLb.isUploadZip === true) {
-                        if (this.fd[i].videoList.length === 0 || this.fd[i].imgList.length === 0 || this.fd[i].zipList.length === 0) {
-                            this.$toast.fail("请您选择要上传的作品！")
-                            return
-                        }
+                    if (this.chooseLb.isUploadPhoto === true && this.fd[i].imgList.length === 0) {
+                        this.$toast.fail("请您选择要上传的图片！")
+                        return
+                    }
+                    if (this.chooseLb.isUploadOther === true && this.fd[i].videoList.length === 0) {
+                        this.$toast.fail("请您选择要上传的音/视频或文档！")
+                        return
+                    }
+                    if (this.chooseLb.isUploadZip === true && this.fd[i].zipList.length === 0) {
+                        this.$toast.fail("请您选择要上传的压缩包！")
+                        return
                     }
                     if (!this.fd[i].zplb || !this.fd[i].zpmc || !this.fd[i].zpms) {
                         this.$toast.fail("请您填写完整再提交！")
@@ -912,7 +935,8 @@
                         })
                     })
                     this.boxData = data.data
-                    this.formData.hdlb_i = 0
+                    this.$set(this.formData, 'hdlb_i', 0)
+                    this.setDefaultZplb(0)
                     this.showPage = true
 
                     if (!data.data.hdflag) {
@@ -944,7 +968,7 @@
                 this.$set(this.fd[refs[0].llocation - 1], "hdsbsj", refs[0].hdsbsj)
                 this.$set(this.fd[refs[0].llocation - 1], "zpms", refs[0].hdsbzpms)
                 const o = this.boxData.lbs[refs[0].llocation - 1].zplbs.find(o => o.zid === refs[0].hdzplx2)
-                this.chooseLb = o !== undefined ? o : {}
+                this.$set(this, 'chooseLb', o !== undefined ? o : {})
                 data.forEach((v, i) => {
                     v.filename = v.filename
                     v.fjurl = v.filepath