fix:上传文件添加大小限制，不能超过20M

pages/meetingDetail/uploadFile.js

@@ -9,7 +9,12 @@ function getImg() {
         dd.chooseImage({
             count: 1,
             success: (res) => {
-                resolve(res)
+                console.log(JSON.stringify())
+                if (res.files[0].size > 20 * 1024 * 1024) {
+                    rejects({ code: -1, msg: '文件小一点', ...res })
+                } else {
+                    resolve(res)
+                }
             },
             fail: (err) => {
                 rejects({ code: -1, msg: '选择图片失败', ...err })