Azure OAuth2 PostMan 授权代码

//config varibales
const tokenLifeTime = 59;//minute
pm.environment.set('tenantDomain', 'dev.onmicrosoft.com') // Directories + subscriptions
pm.environment.set('client_credentials', 'client_credentials') // type
pm.environment.set('clientId', 'de1d0d77-') //
pm.environment.set('clientSecret', 'fUA=') //
pm.environment.set('resource', 'http://dev.com/cloudservices/system/test1/agent') //ResourcesId

//check bearerToken.
var oldToken = pm.environment.get('bearerToken');
var bearerTime = pm.environment.get('bearerTime');//last update bearerToken time 
var noToken = oldToken == undefined || oldToken == null || oldToken.trim() == '';
var expired = bearerTime == undefined || (new Date(bearerTime).addMinutes(tokenLifeTime) - new Date()) < 0;
if (noToken || expired) {
    console.log('BearerToken has expired.')
    pm.sendRequest(
        {
            url: 'https://login.microsoftonline.com/' + pm.environment.get('tenantDomain') + '/oauth2/token',
            method: 'POST',
            header: 'Content-Type: application/x-www-form-urlencoded',
            body: {
                mode: 'urlencoded',
                urlencoded: [
                    { key: 'grant_type', value: 'client_credentials', disabled: false },
                    { key: 'client_id', value: pm.environment.get('clientId'), disabled: false, },
                    { key: 'client_secret', value: pm.environment.get('clientSecret'), disabled: false, },
                    //{ key: 'scope', value: pm.environment.get('scope'), disabled: false },
                    { key: 'resource', value: pm.environment.get('resource'), disabled: false },
                ],
            },
        },
        function (err, res) {
            //pm.globals.set('bearerToken', res.json().access_token)
            pm.environment.set('bearerToken', res.json().access_token)
            pm.environment.set('bearerTime', new Date())
            console.log(pm.environment.get('bearerToken'))
        },
    )
} else {
    console.log('BearerToken is exist and life is ok.')
}

将上述代码置于左建点击某一Collection的Pre-request Script 后，再选中AuthorizationTab页修改为：