Node.js 实现存储服务的上传功能【包含前后端代码】

varformdata=newFormData();
formdata.append("file", file);
$.ajax({
type: 'post',
dataType: 'json',
url: uploadurldata: formdata,
contentType: false,
processData: false}).success((data) => {
}).error((data, timeout, err) => {
})

letformData=newFormData();
formData.append('file',file);
letconfig= {
headers: {
'Content-Type': 'multipart/form-data;charset=UTF-8'    }
};
axios.post(uploadurl,formData,config).then(({data})=>{
});

varmulter=require('multer');
varstorage=multer.diskStorage({
destination: function (req, file, cb) {
vartype=file.mimetype.split("/")[0];
switch(type){
case"image":
cb(null, './images');
break;
case"audio":
case"video":
cb(null, './movies');
break;
default:
cb(null, './uploads');
    }
  },
filename: function (req, file, cb) {
cb(null, file.originalname);
  }
});
varupload=multer({
storage: storage});
// apiapp.post("/api/upload", upload.single('file'), Admincontroller.postupload);
// postuploadexports.postupload=function (req, res) {
// 解决跨域问题 res.header("Access-Control-Allow-Origin", "*")
res.header("Access-Control-Allow-Methods", "*")
res.header("Access-Control-Allow-Headers", "*")
res.header("Access-Control-Allow-Credentials", "true")
res.header("Cache-Control", "no-cache")
res.header("content-type", "application/json;charset=UTF_8")
if ("OPTIONS"==req.method) {
console.log("===> options reqest");
res.body=200;
return;
  }
varfile=req.file;
console.log("===> upload file: "+JSON.stringify(file))
varbody=req.body;
console.log("===> upload body: "+JSON.stringify(body))
......// 处理音视频类型的文件case0: // 视频case1: // 音频default: //视频 音频      {
vardes="./movies/";
vartrans=body.dtranscode;
vartaskId=body.id;
file.path=des+filename;
file.originalname=filename;
varfilearr=filename.split(".");
filearr.pop();
varpath=filearr.join('.');
vartmppath=des+path;
varexitst=fs.existsSync(tmppath);
if (!exitst) {
fs.mkdirSync(tmppath);
        }
varnewfilename=filename+body.dzchunkindex;
fs.renameSync(file.path, tmppath+"/"+newfilename);
if (body.dzchunkindex*1+1==body.dztotalchunkcount*1) {
varfiles=fs.readdirSync(tmppath);
for (vari=0; i<files.length; i++) {
fs.appendFileSync(file.path+"", fs.readFileSync(tmppath+"/"+filename+i));
fs.unlinkSync(tmppath+"/"+filename+i);
          }
fs.rmdirSync(tmppath);
        }
returnres.json({
code: 0,
success: 1        });
      }