node 文件下载到本地 (支持中文文件名) 

downloadfile:function(req,res,next){
    var name= encodeURI(req.query.name);  

    var path= req.query.url;
    var url = p.urlprestatic.substr(0, p.urlprestatic.indexOf("/supplierplatformstatic/")+"/supplierplatformstatic/".length)
    if(utils.isEmpty(name) || utils.isEmpty(path) || name == undefined || path == undefined){
        res.send("<html><head><title>文件下载</title></head><body><script>alert(\"文件名或文件路径不能为空！\");" +
            "window.location.href='"+url+"'</script></body></html>")
    }else{
        try {
            var filename = path.substr(path.indexOf("/file")+"/file/".length,path.length)
            var filePath = p.targetDir+ filename;
            var stats = fs.statSync(filePath);
            if(stats.isFile()){
                res.set({
                    'Content-Type': 'application/octet-stream',
                    'Content-Disposition':"attachment; filename*=UTF-8''"+name,
                    'Content-Length': stats.size
                });
                fs.createReadStream(filePath).pipe(res);
            } else {

                res.send("<html><head><title>文件下载</title></head><body><script>alert(\"文件下载失败！\");" +
                    "window.location.href='"+url+"'</script></body></html>")
            }
        }catch(e){
            res.send("<html><head><title>文件下载</title></head><body><script>alert(\"文件下载失败！\");" +
                "window.location.href='"+url+"'</script></body></html>")
        }


    }

}

 

posted @ 2018-06-05 14:00  阿泽的小码园  阅读(718)  评论(1)    收藏  举报