三方件@ohos/axios中发起post请求，如何以queryParams形式传递参数

let params:Url.URLParams = new Url.URLParams() 
params.append("fod" : '1') 
params.append("bard" : '2') 
axios.post('https://developer.mozilla.org/?' + params.toString()).then(res => { 
  this.message = "request result: " + JSON.stringify(res.data); 
}).catch(err => { 
  this.message = "request error: " + err.message; 
})

axios({ 
  url: 'https://developer.mozilla.org/?', 
  method: 'post', 
  params: { 
    fod: '1', 
    bard: '2', 
  } 
}).then(res => { 
  this.message = "request result: " + JSON.stringify(res.data); 
}).catch(err => { 
  this.message = "request error: " + err.message; 
})