小程序中实现token自动刷新

小程序中实现超过一定时间自动刷新token

//判断token是否过期
async function WeChatMiniRefreshToken() {
    
    
    let accessExpiresIn = wx.getStorageSync('tokenData').accessExpiresIn; //refreshtoken过期时间
    let refreshToken = wx.getStorageSync('tokenData').refreshToken;
    let currentTime = new Date();
    const accessTime = new Date(accessExpiresIn);
    if (currentTime.getTime() >= accessTime.getTime()) {
    
    
        await refreshHttp(refreshToken);
    }
}


//token过期了重新请求获取token
async function refreshHttp(refreshToken,globalData) {
    
    
    let app = getApp();
    app = app ? app : globalData;
    let header = Object.assign({
    
    
        'content-type': 'application/json'
    }, {
    
    
        'apiVersion': '1.0'
    }, {
    
    
        'platform': 'WeChatMiniProgram'
    }, {
    
    
        'platformVersion': '1.0'
    }, {
    
    
        'Authorization': "Bearer " + app.globalData.accessToken
    });
    try {
    
    
		const res = await request({
    
    
            url: app.globalData.host + '/api/Login/WeChatMiniProgram/RefreshToken?refreshToken=' + refreshToken,
            method: 'GET',
            header: header
        });
        if (res) {
    
    
            let datas = res.data
            const curTime = new Date();
            const accessExpiredTime = new Date(curTime.setSeconds(curTime.getSeconds() + datas.expiresIn));
            let tokenData = wx.getStorageSync('tokenData');
            tokenData.accessToken = datas.accessToken;
            app.globalData.accessToken = datas.accessToken;
            tokenData.accessExpiresIn = accessExpiredTime;
            wx.setStorageSync('tokenData', tokenData);

        }
	} catch (e) {
    
    
		console.log(e)
	}
}


//promise方法
function request(options) {
    
    
    return new Promise((resolve, reject) => {
    
    
        options.success = res => {
    
    
            resolve(res);
        };
        options.fail = err => {
    
    
            reject(err)
        };
        wx.request(options);
    })
}


export default {
    
    
    WeChatMiniRefreshToken,
    refreshHttp
}