下载markdown  http://wowubuntu.com/markdown/

安装markdown

npm install markdown

在post.js中引入markdown

var markdown = require('markdown').markdown;

在callback之前，添加一行代码

//解析 markdown 为 html
docs.forEach(function (doc) {
  doc.post = markdown.toHTML(doc.post);
});

安装multer

npm install multer

配置multer 记住，一定是在index.js当中进行添加的.

var multer  = require('multer');
//新的使用方法配置multer
var storage = multer.diskStorage({
    destination: function (req, file, cb){
        cb(null, './public/images')
    },
    filename: function (req, file, cb){
        cb(null, file.originalname)
    }
});
var upload = multer({
    storage: storage
});

新增上传页面,在header.ejs中
<span><a href="/upload">上传</a></span>

然后创建upload.ejs页面

<%- include header %>
<form method='post' action='/upload' enctype='multipart/form-data' >
  <input type="file" multiple name='field1'/><br>
  <input type="submit" />
</form>
<%- include footer %>

新增打开上传页面的逻辑

app.get('/upload', checkLogin);
app.get('/upload', function (req, res) {
  res.render('upload', {
    title: '文件上传',
    user: req.session.user,
    success: req.flash('success').toString(),
    error: req.flash('error').toString()
  });
});
app.post('/upload', checkLogin);
app.post('/upload', upload.array('field1', 5), function (req, res) {
  req.flash('success', '文件上传成功!');
  res.redirect('/upload');
});

最后在发表的文章中加入这张图片试试