vue对后台返回的二进制流进行下载(vue+axios)

vue对后台返回的二进制流进行下载(vue+axios)

1.设置axios的数据返回类型为blob

responseType:“blob”

2.接收后台返回的二进制流数据res

            var blob = new Blob([res.data]); //application/vnd.openxmlformats-officedocument.wordprocessingml.document这里表示doc类型
            var contentDisposition = res.headers["content-disposition"]; //从response的headers中获取filename, 后端response.setHeader("Content-disposition", "attachment; filename=xxxx.docx") 设置的文件名;
            var patt = new RegExp("filename=([^;]+\\.[^\\.;]+);*");

            var result = patt.exec(contentDisposition);
              var filename = result[1];
              if (window.navigator.msSaveOrOpenBlob) {
             	 //兼容ie
                navigator.msSaveBlob(blob, filename);
              } else {
              	var downloadElement = document.createElement("a");
              	var href = window.URL.createObjectURL(blob); //创建下载的链接
              	var reg = /^["](.*)["]$/g;
              	downloadElement.style.display = "none";
              	downloadElement.href = href;
              	downloadElement.download = decodeURI(filename.replace(reg, "$1")); //下载后文件名
             	 document.body.appendChild(downloadElement);
              	downloadElement.click(); //点击下载
              	document.body.removeChild(downloadElement); //下载完成移除元素
             	 window.URL.revokeObjectURL(href); //释放掉blob对象
              }

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