JS构造一个html文本内容成文件流形式发送到后台

let html = 
    
    
     
     
     
     
     
    
    
     

     ${template}
     
    
    ;
var wordStream = window.URL.createObjectURL(
    new Blob([html],{ type: "text/plain;charset=utf-8" }));
    console.log('wordStream',wordStream);
   let formdata = new FormData();
   formdata.append('file',wordStream);
   this.$post(url,formdata)
   .then(res=>{
    console.log('export finish',res);
   })

      let html = this.getHtmlContent();
      let html_ = new Blob([html],{ "type" : "text/html;charset=utf-8" })
      let formdata = new FormData();
      formdata.append('file', html_, `sdf.html`);
      axios({
        method: 'post',
        url: url,
        data:formdata,
        responseType:'blob',
      })