修复图片预览组件src属性为null值控制台报错问题(I5KBAS)

@@ -19,7 +19,7 @@ export default {
   props: {
   props: {
     src: {
     src: {
       type: String,
       type: String,
-      required: true
+      default: ""
     },
     },
     width: {
     width: {
       type: [Number, String],
       type: [Number, String],
@@ -32,6 +32,9 @@ export default {
   },
   },
   computed: {
   computed: {
     realSrc() {
     realSrc() {
+      if (!this.src) {
+        return;
+      }
       let real_src = this.src.split(",")[0];
       let real_src = this.src.split(",")[0];
       if (isExternal(real_src)) {
       if (isExternal(real_src)) {
         return real_src;
         return real_src;
@@ -39,6 +42,9 @@ export default {
       return process.env.VUE_APP_BASE_API + real_src;
       return process.env.VUE_APP_BASE_API + real_src;
     },
     },
     realSrcList() {
     realSrcList() {
+      if (!this.src) {
+        return;
+      }
       let real_src_list = this.src.split(",");
       let real_src_list = this.src.split(",");
       let srcList = [];
       let srcList = [];
       real_src_list.forEach(item => {
       real_src_list.forEach(item => {