前端上传的几种方式

1. 转换成二进制

    const requestMethod = (file) => {
      let reader = new FileReader();
      reader.readAsArrayBuffer(file.raw);
      reader.onload = function (event) {
        console.log(event.target.result);
        let res = event.target.result;
        state.curFile = res;
      };;
    };

2.  formData 

    const requestMethod = (file) => {
        let formData = new FormData();
        formData.append('file', file.raw)
    };