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  • vue 获取视频时长

    参考资料:js获取上传音视频文件的时长

    直接通过element-ui自带的上传组件结合js即可,代码如下:

    HTML:

            <el-upload class="upload-demo" :action="actionUrl" :show-file-list="false" :on-success="handleAvatarSuccess"
              :before-upload="beforeAvatarUpload">
              <button class="ce-button not-hover primary">
                <i class="ce-icon_upload"></i>
                <span>重新上传</span>
              </button>
            </el-upload>

    得加一个中间字段,用于保存视频时长的值,因为在监听器里面不能直接使用vue页面定义的全局变量:

     <input type="text" ref="dur" name='0'/>

    js:

         beforeAvatarUpload(file) {
            var fileName = file.name || ''
            var ext = fileName.split('.')[fileName.split('.').length - 1]
            if (ext !== "doc" && ext !== "docx" && ext !== "xls" && ext !== "xlsx"
              && ext !== "ppt" && ext !== "pptx" && ext !== "pdf" && ext !== "mp4") {
              this.$notify({
                title: "失败",
                message: "上传资源只能是 doc/docx/xls/xlsx/ppt/pptx/pdf/mp4 格式!",
                type: "error",
                duration: 3000
              });
              return false
            }
            // ppt(10MB),word(10MB),excel(5MB)
            if (ext == "doc" || ext == "docx" || ext == "ppt" || ext == "pptx") {
              debugger
              if (parseInt(file.size) > parseInt('10485760‬')) {
                this.$notify({
                  title: "失败",
                  message: "上传word、ppt文件上限为10MB!",
                  type: "error",
                  duration: 3000
                });
                return false
              }
            }
    
            if (ext == 'mp4') { // 获取视频时长
              var url = URL.createObjectURL(file);
              var audioElement = new Audio(url);
              var duration;
              var ele = this.$refs.dur
              audioElement.addEventListener("loadedmetadata", function (_event) {
                duration = audioElement.duration; //时长为秒,小数,182.36
                ele.name = duration //目前使用这种方式解决js与vue之间的传值问题
                // this.$parent.$data.wDuration = parseInt(duration) //注意传递给接口的时长字段类型要与接口接收的字段类型一致,不然无法获取到值
              });
            }
    
            this.$parent.$data.wFileName = file.name
            this.$parent.$data.wSize = parseFloat(file.size / 1024).toFixed(2) //获取文件大小
          }
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  • 原文地址:https://www.cnblogs.com/dawenyang/p/11381234.html
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