本文提供实现pdf，zip等文件下载方式

一：pdf，zip等文件下载:

1.请求封装

export function downloadFj(params) {
    return http.post('/api/1/fmis/statBillfileUnzip/downloadFj', params, {
        responseType: 'blob',
    })
}

2.调用

 async downloadFile() {
                let res = await downloadFj(参数)

                if (res.status === 200 && res.data) {
                    const { data } = res
                    const blob = new Blob([data])
                    let disposition = decodeURI(res.headers['content-disposition'])
                    // 从响应头中获取文件名称
                    let fileName = disposition.substring(disposition.indexOf('filename=') + 9, disposition.length)
                    if ('download' in document.createElement('a')) {
                        // 非IE下载
                        const elink = document.createElement('a')
                        elink.download = fileName
                        elink.style.display = 'none'
                        elink.href = URL.createObjectURL(blob)
                        document.body.appendChild(elink)
                        elink.click()
                        URL.revokeObjectURL(elink.href) // 释放URL 对象
                        document.body.removeChild(elink)
                    } else {
                        // IE10+下载
                        navigator.msSaveBlob(blob, fileName)
                    }
                } else {
                    this.$message.error('下载失败')
                }
            },