请求对象为空值

Question

我在哈巴狗中设置了一个表单，如下所示：

extends layout

block content
  h1 David A Hines
  h2 #{posts[0].title}
  p #{posts[0].body}
  div
   form(action='/insert_post',method='post')
    div(id='title_div',data-role='fieldcontain')
      fieldset(data-role='controlgroup')
        p
          label(for='title') Title
        p
          input(id='title',type='text',value='',placeholder='')
      fieldset(data-role='controlgroup')
        p
          label(for='body') Body
        p
          textarea(id='body',cols="40", rows="5", type='textarea',value='',placeholder='')
      fieldset(data-role='controlgroup')
        label(for='author_name') Author Name
        input(id='author_name',type='text',value='',placeholder='')
        label(for='author_email') Author Email
        input(id='author_email',type='text',value='',placeholder='')
    div(data-role='fieldcontain')   
       input(type='submit',value='Submit Post',data-transition='fade', data-theme='c')

它命中/ insert_post，其中/ insert post在数据库中记录，但是请求对象完全为空。

这是我的insert_post操作：

router.post('/insert_post', function(req, res, next) {
    var postsArray = [];
    MongoClient.connect(database.url, function(err, db) {
        var db = db.db(database.database);
        if (!err) {
            console.log("We are connected");
            var postsCollection = db.collection('posts');
            console.log("request: "+JSON.stringify(req.body));
            var postObject = {
              title: req.body.title,
              body: req.body.body,
              author: {
                name: req.body.name,
                email: req.body.email
              }
            }
            postsCollection.insertOne(postObject, function(err, response) {
                console.log("Inserted Post: "+JSON.stringify(response.ops[0]));
                res.render('index', {
                    posts: response.ops[0]
                });
            });
        } else {
            console.log("error:" + err);
            res.end("error: " + err);
        }
    });
});

我知道，如果您没有安装body-parser，则request.body可以为null，我已在我的app.js中对其进行了设置，因此我真的不确定这是怎么回事。

编辑：我的express的package.json版本表示〜4.16.0可能会有所不同，所以如果这意味着它大于或等于4.16，我就不需要使用bodyParser吗？

Answer 1

注意：您需要在输入字段中传递名称并发布数据以表示节点js。

服务器端代码：-

 router.post('/insert_post', function(req, res, next) {
        var postsArray = [];
        MongoClient.connect(database.url, function(err, db) {
            var db = db.db(database.database);
            if (!err) {
                console.log("We are connected");
                var postsCollection = db.collection('posts');
                console.log("request: "+JSON.stringify(req.body));
                var postObject = {
                  title: req.body.title,
                  body: req.body.body,
                  author: {
                    name: req.body.author_name,
                    email: req.body.author_email
                  }
                }
                postsCollection.insertOne(postObject, function(err, response) {
                    console.log("Inserted Post: "+JSON.stringify(response.ops[0]));
                    res.render('index', {
                        posts: response.ops[0]
                    });
                });
            } else {
                console.log("error:" + err);
                res.end("error: " + err);
            }
        });
    });

pug文件代码：-

 extends layout

    block content
      h1 David A Hines
      h2 #{posts[0].title}
      p #{posts[0].body}
      div
       form(action='/insert_post',method='post')
        div(id='title_div',data-role='fieldcontain')
          fieldset(data-role='controlgroup')
            p
              label(for='title') Title
            p
              input(id='title',name='title',type='text',value='',placeholder='')
          fieldset(data-role='controlgroup')
            p
              label(for='body') Body
            p
              textarea(id='body',name='body',cols="40", rows="5", type='textarea',value='',placeholder='')
          fieldset(data-role='controlgroup')
            label(for='author_name') Author Name
            input(id='author_name',name='author_name',type='text',value='',placeholder='')
            label(for='author_email') Author Email
            input(id='author_email',name='author_email',type='text',value='',placeholder='')
        div(data-role='fieldcontain')   
           input(type='submit',value='Submit Post',data-transition='fade', data-theme='c')