vue——put请求设置header后无效问题解决

···
let config = {
    headers: {
          "Content-Type": "application/json",
          "token": localStorage.getItem("token")
    }
}

this.$axios.put(‘***‘ ,config).then(function (res) {
    ···
})
···

···
let config = {
    headers: {
          "Content-Type": "application/json",
          "token": localStorage.getItem("token")
    }
}

this.$axios.put(‘***‘ ,‘‘,config).then(function (res) {  // <= 关键，在url和config中插入一个空字符参数
    ···
})
···