起因

最近开发微信，遇到了各种问题，看文档看了好多遍仍然感觉很难用，所以就尝试把微信api封装了一下,所以分享一下，有问题提交Issues哦。

项目地址

未标题-1.jpg

万恶之源-如何开始

npm install anger-wechat --save

var AngerWechat = require('anger-wechat')
var weixinApi = new AngerWechat({
    appId: 'wxf638c1f64239e786', // appId
    appSecret: 'e10c0db08562640e0a9fffab940724c2', // appSecret
    authUrl: 'http://www.toolos.cc/get-weixin-code.html', // 微信auth2.0授权公共页面
    payment: { // 可选 如果需要支付模块的话
        mchId: '123456',
        partnerKey: '456789',
        pfx: path.join(__dirname, 'apiclient_cert.p12'), //【可选】证书路径，不传大多接口掉不了
        notifyUrl: '' // 【可选】微信支付接受到结果'
    }
})

常用方法

`getGlobalAccessToken`

获取 access_token <a href="https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421140183">戳我查看官方文档</a>

access_token是公众号的全局唯一接口调用凭据，公众号调用各接口时都需使用access_token。开发者需要进行妥善保存。access_token的存储至少要保留512个字符空间。access_token的有效期目前为2个小时，需定时刷新，重复获取将导致上次获取的access_token失效。

let access_token = await weixinApi.getGlobalAccessToken()

{ 
    "code": 200,
    "msg": "请求成功",
    "data": { 
        "access_token": "11_oTBrYVsT9wqa_-q3WDNEBOtfz1XKdM7YKIcNBEiu29Wfh5yTnlqaj5W0hMuxZ7C9FlY7CxD0RjR35V1ik1M3Nyi5QENcgFKhh0gYoBnAXEQ2oV93sVtO7IRqhh1kd9QLG8fwyA3vFRdifpJCOVLgAGAVCS",
        "expires_in": 7200 
    } 
}

`getJsTicket`

获取 js api_ticket <a href="https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421141115">戳我查看官方文档</a>

api_ticket 是用于调用微信卡券JS API的临时票据，有效期为7200 秒，通过access_token 来获取。

let jsTrickt = await weixinApi.getJsTicket({
    access_token: '11_oTBrYVsT9wqa_-q3WDNEBOtfz1XKdM7YKIcNBEiu29Wfh5yTnlqaj5W0hMuxZ7C9FlY7CxD0RjR35V1ik1M3Nyi5QENcgFKhh0gYoBnAXEQ2oV93sVtO7IRqhh1kd9QLG8fwyA3vFRdifpJCOVLgAGAVCS' // 以上一步获取到的access_token 获取 js api_ticket
  })

{
    "code": 200,
    "msg": "ok",
    "data": {
        "errcode": 0,
        "errmsg": "ok",
        "ticket": "HoagFKDcsGMVCIY2vOjf9oKOmI5MRTBgKJJwCDQ2BnyLbfAJHCZXUIs992xQP246Nzp7LCNupv5Jablw8COZ_w",
        "expires_in": 7200
    }
}

`getAuthUrl`

获取 Auth地址,重定向之后用来获取code

let authURl = weixinApi.getAuthUrl({
    redirect_uri: 'http://www.baidu.com',
    scope: 'snsapi_userinfo' // snsapi_base:静默授权，snsapi_userinfo:提示授权（可以后续获取用户信息）
})
console.log(authURl)
// http://www.toolos.cc/get-weixin-code.html?appid=wxf638c1f64239e786&redirect_uri=http://www.baidu.com&scope=snsapi_userinfo&state=STATE

`getAuthAccessTokenByCode`

根据code获取 openid

let codeInfo = await weixinApi.getAuthAccessTokenByCode({
    code: '061729xv1BtSAa09g8yv1hr0xv1729xB'
})

{
    "code": 200,
    "msg": "请求成功",
    "data": {
        "access_token": "11_Vc7D8AoYURWoECzJgD6Q1ccUOOHypO6mU0RQF7BnliKKCY5arfVvl0h3PWURwpK7QFgPLfDkHLX-9Dif6BTntw",
        "expires_in": 7200,
        "refresh_token": "11_ii3uONcMPA-04RjuLlckMMiwaDGF2MjW2SB5vOI3Sshz39PAVn7kOyC80_pPmmRJxqbfJ3Rdw07WG154AeP83Q",
        "openid": "oI-Aa04T6FrpFFpTfyAaXR4SKacU",
        "scope": "snsapi_userinfo"
    }
}

`getUserInfo`

根据 getAuthAccessTokenByCode 获取的 access_token 和 openid 获取用户信息，注意这里的获取回调url方法 getAuthUrl 的 scope 需要传 snsapi_userinfo

let userInfo = await weixinApi.getUserInfo({
    access_token: codeInfo.data.access_token,
    openid: codeInfo.data.openid
})

{
    "code": 200,
    "msg": "请求成功",
    "data": {
        "openid": "oI-Aa04T6FrpFFpTfyAaXR4SKacU",
        "nickname": "吃鱼的帆",
        "sex": 1,
        "language": "zh_CN",
        "city": "**",
        "province": "**",
        "country": "中国",
        "headimgurl": "http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIS3x9dFdptD1s2ZZMTDCriaiaXiaDPtyZw3vfMmJLyQ8PU8laBv4MNnJh5c9QWtTQey0m4FYUPVEvAQ/132",
        "privilege": []
    }
}

`getJsSdkConfig`

获取js sdk config配置 <a href="https://mp.weixin.qq.com/debug/cgi-bin/sandbox?t=jsapisign">微信 JS 接口签名校验工具</a>

let jsTricktConfig = await weixinApi.getJsSdkConfig({
    ticket: 'HoagFKDcsGMVCIY2vOjf9oKOmI5MRTBgKJJwCDQ2Bnx34ua3MVs9zUZpV0wQPe8h83AwFSZQREHGgmuKpqvdsg',
    url: 'http://www.toolos.cc' // 调用js sdk 页面地址
})

{
    "appId": "wxf638c1f64239e786",
    "signature": "2c18eb8d6adaa5e02a9df517e776f5eef40ed402",
    "noncestr": "04b21a6a-caea-4878-9fdb-8b2c1ff699b0",
    "timestamp": 1530636997,
    "jsapi_ticket": "HoagFKDcsGMVCIY2vOjf9oKOmI5MRTBgKJJwCDQ2Bnx34ua3MVs9zUZpV0wQPe8h83AwFSZQREHGgmuKpqvdsg"
}

`isWechat`

判断是否是微信环境

let isWeixin = weixinApi.isWechat(request) // 传入 `request` 对象，返回 true | false

支付

"https://github.com/Jon-Millent/anger-wechat/blob/master/pay.MD

附录

关于 authUrl 参数

参考 https://github.com/Jon-Millent/GetWeixinCode

校验工具

微信 JS 接口签名校验工具https://mp.weixin.qq.com/debug/cgi-bin/sandbox?t=jsapisign
微信公众平台接口调试工具https://mp.weixin.qq.com/debug/

【一次尝试】anger-wechat 封装常用微信api