curl --data "db_name=auto&old_db=Lab.tar.gz&new_db=627999E00_10.tgz"
     --noproxy localhost
     -H "Accept: text/plain"
     -H "Content-Type: text/plain"
     -X POST http://localhost:8084/auto

app.post('/auto',function(req,res){
    var db_name=req.body.db_name; //undefined
    var old_db=req.body.old_db; //undefined
    var new_db=req.body.new_db; //undefined
    ...
});