需求是选择相册，然后上传图片到相册。 app.js，使用multer

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true}));

页面

<form id="form" method="post" action="/upload" >
         <p>
            <span >选择相册：</span>
            <select name="album">
              <%
              var albumValue = albums[0]._id;
              if (typeof(album) !== 'undefined') {
                albumValue = album;
              }
              albums.forEach(function (album) {
              console.log(album);
                var albumId = album._id;
                var albumName = album.name;
                %>
                <option value="<%=albumId%>" <%= albumValue === albumId ? 'selected': '' %>><%=albumName%></option>

              <%});%>
            </select>
        </p> 
    <div id="uploader">
        <p>Your browser doesn't have Flash, Silverlight or HTML5 support.</p>
    </div>
    <br />
</form>

后端：

exports.upload = function (req, res){
   console.log("req.body:"+JSON.stringify(req.body));
};

log: POST /upload - - ms - - req.body:{"name":"Chrysanthemum.jpg","chunk":"0","chunks":"1"}

问题是后端如何获取下拉框选中的album的信息呢？