请求正文未解析的变量节点

Question

我正在尝试使用node和express创建一个简单的注册路由。由于某种原因，req.body.name被突出显示为未解析的变量名称。 在postman中运行时，它会发出验证错误并说“＃34; Path {PATH}是必需的。＆＃34;

我的javascript代码：

router.post('/', function(req, res) {
    var participant = new Participant({

    name:req.body.name, // this is the place where unresolved variable is coming
    regno:req.body.regno,
    gender : req.body.gender,
    email : req.body.email,
    mobile : req.body.mobile,
    room : req.body.room,
    adgid : req.body.adgid

});

participant.save(function(err,docs) {
    if(docs) {

        res.json({
            "message":docs
        })
    }
    else{
        res.json({
            code: '1',
            message: err
        })
    }
});

我的模特档案：

 var mongoose = require('mongoose');

var participantSchema = mongoose.Schema({
     name:{ type: String , required :true},
     regno:{ type:String, required :true },
     gender:{ type:String, required :true },
     mobile:{ type: Number ,required :true },
     email:{ type:String,required :true },
     room:{ type:String ,required :true },
    adgid : {type:String , required : true}
});

   var Participant = mongoose.model('Participant', participantSchema);
   module.exports= {Participant : Participant};