Vue向后端传数据后端接收为null问题及解决

npm install qs

import qs from 'qs'      //引入qs
Vue.prototype.$qs = qs

axios.post('http://localhost:8080/manage/doctor/login.do',
		this.$qs.stringify({
		doctorName:this.form.username,
			password:this.form.password,
			// test:3,
		}) 
		)
		.then(response=>{
			 console.log(response);
		})
		//获取失败
		.catch(error=>{
			  console.log(error);
			  alert('网络错误，不能访问');
		})

service.interceptors.response.use(
  (response) => {
    loadingInstance &&
      setTimeout(function () {
        loadingInstance.close()
      }, 500)
    const res = response.data
    return res
  },
  (error) => {
    loadingInstance &&
      setTimeout(function () {
        loadingInstance.close()
      }, 500)

    if (error && error.response) {
      var { status, data } = error.response
      if (status === 401 || status === 403) {
        if (!loginInstance && whiteRoutes.indexOf(requestUrl) === -1) {
          loginInstance = MessageBox.confirm('登录超时请重新登录', '重新登录', {
            confirmButtonText: '好的',
            type: 'warning'
          })
            .then(() => {
              loginInstance = null
              store.dispatch('user/resetToken').then(() => {
                location.reload()
              })
            })
            .catch(() => {
              loginInstance = null
            })
        }
      } else {
        if (data) {
          Message({
            message: data,
            type: 'error',
            duration: 5 * 1000
          })
        } else {
          Message({
            message: data.message || '服务器异常，请稍后再试或联系管理员',
            type: 'error',
            duration: 5 * 1000
          })
        }

      }
    } else {
      Message({
        message: '服务器异常，请稍后再试或联系管理员',
        type: 'error',
        duration: 5 * 1000
      })
    }