使用axios下载java流文件的两种方式

[ Ajax ] 

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async function download(){
    const res = await axios.get(url, {
        responseType:'blob'
    })
    const blob = new Blob([res.data], {
      type: res.data.type,
    });

    const link = document.createElement('a');
    const file = URL.createObjectURL(blob);
    const fileName = new Date().getTime() + '.xls';
    link.href = file;
    link.download = fileName;
    link.click();
    URL.revokeObjectURL(link.href);
}

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async function download(){
    const res = await axios.get(url, {
        responseType:'blob'
    })

    const blob = new Blob([res.data]);
    const reader = new FileReader();
    reader.readAsDataURL(blob);
    reader.onload = function (e) {
        const fileName = `${+new Date()}.xls`;
        const link = document.createElement('a');
        link.href = e.target.result;
        link.download = fileName;
        link.click();
    };
}