拆分一个json对象然后它返回未定义

Question

我正在尝试拆分json对象。对象正在通过我的api。但是，当我尝试打破对象时，我得到undefined。

对象：

Object {_id: "248mehw32ako48wuwvobf66fvoevb2p", auth: "YWRtaW46cGFzc3dvcmQ="}

js code

server.del('/inter/delete', (req, res) => {
    //From the URL both the auth and listID is extrcted
    console.log('body test')
    console.log(req.body)
    console.log('id te')

    const listID = req.body._id
    console.log(req.body.auth)
    const auth = req.body.auth

    inter.deleWeather(auth, listID, (data) => {
        res.setHeader('content-type', 'application/json')
        res.send(data.code, {status: data.status, message: 'this should delete the specified resource'})
        res.end()
    })
})