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本篇内容主要讲解“web导出文件核心代码实例”,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习“web导出文件核心代码实例”吧!
1.可直接写:location.href = "后台请求地址"
2.用XMLHttpRequest形式(ajax axios fetch):
axios({
url: url,
params: parameter,
method:'get' ,
responseType: 'blob'
}).then(data=>{
if (!data) {
alert("文件下载失败")
return
}
if (typeof window.navigator.msSaveBlob !== 'undefined') {
//处理IE
window.navigator.msSaveBlob(new Blob([data]), fileName+'.xls')
}else{
let url = window.URL.createObjectURL(new Blob([data]))
let link = document.createElement('a')
link.style.display = 'none'
link.href = url
link.setAttribute('download', fileName+'.xls')
document.body.appendChild(link)
link.click()
document.body.removeChild(link); //下载完成移除元素
window.URL.revokeObjectURL(url); //释放掉blob对象
}
})//从服务器上下载文件核心代码 response.setContentType("application/x-msdownload;charset=utf-8"); String fileName="中文文件名.xls"; String userAgent = request.getHeader("user-agent").toLowerCase(); if (userAgent.contains("msie") || userAgent.contains("like gecko") ) { fileName = URLEncoder.encode(fileName, "UTF-8"); }else { fileName = new String(fileName.getBytes("UTF-8"), "iso-8859-1"); } response.setHeader("Content-disposition", "attachment; filename="+ fileName); InputStream inputStream = null; OutputStream outputStream=null; try { String imgurl = "服务器上的文件实际地址"; inputStream = new BufferedInputStream(new FileInputStream(imgurl)); outputStream = response.getOutputStream(); byte[] buf = new byte[1024]; int len; while ((len = inputStream.read(buf)) > 0) { outputStream.write(buf, 0, len); } response.flushBuffer(); } catch (Exception e) { logger.info("--通过流的方式获取文件异常--"+e.getMessage()); }finally{ if(inputStream!=null){ inputStream.close(); } if(outputStream!=null){ outputStream.close(); } }
//导出excel
//此处省略 生成workbook的代码
String fileName = "登记发证统计.xls";
String userAgent = req.getHeader("user-agent").toLowerCase();
if (userAgent.contains("msie") || userAgent.contains("like gecko") ) {
fileName = URLEncoder.encode(fileName, "UTF-8");
}else {
fileName = new String(fileName.getBytes("UTF-8"), "iso-8859-1");
}
// 设置强制下载不打开
resp.setContentType("application/force-download");
resp.setHeader("Content-disposition", "attachment; filename="+ fileName);
OutputStream out = resp.getOutputStream();
workbook.write(out);
resp.flushBuffer();生成workbook的示例
到此,相信大家对“web导出文件核心代码实例”有了更深的了解,不妨来实际操作一番吧!这里是亿速云网站,更多相关内容可以进入相关频道进行查询,关注我们,继续学习!
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