增加微信分享接口

package.json

@@ -31,6 +31,7 @@
     "body-parser": "^1.18.3",
     "child_process": "^1.0.2",
     "express": "^4.16.4",
-    "multer": "^1.4.1"
+    "multer": "^1.4.1",
+    "sha1": "^1.1.1"
   }
 }

server/controller/WxMonitor.js

+// 这个接口页面，主要处理微信相关的接口
+const _request= require('request');
+const sha1 = require('sha1');
+const _config = {
+  "weixinsecret":{
+    "wxd6109d07f6396e5c": "d80a330735fc82f3fd6aba425481e8fd",
+    "wxe1849e28e176c67b": "90072420a6b6941b7b8af38afd019b9f"
+  }
+};
+let share_json = {
+  jsapi_ticket:'', //上一步获取的 ticket
+  noncestr:'', //随机字符串
+  timestamp: '' //事件戳
+};
+
+//获取token
+function getsignature(req,res){
+  let access_token_url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential';
+  let jsapi_ticket_url = 'https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=';
+
+  let get_access_token_url = access_token_url + '&appid=' + req.body.appId + '&secret=' + _config.weixinsecret[req.body.appId];
+
+  new Promise((resolve, reject) => {
+    return _request.get(get_access_token_url, function (error, response, body) {
+      return error ? reject(error) : resolve(body);
+    })
+
+  }).then(function(newResult){
+    let url = jsapi_ticket_url+JSON.parse(newResult).access_token;
+    // 获取 ticket
+    return  new Promise((resolve, reject) => {
+      _request.get(url, function (err, rs, body) {
+        share_json.jsapi_ticket = JSON.parse(body).ticket;
+        share_json.noncestr = Math.random().toString(36).substr(2, 15); //随机字符串
+        share_json.timestamp = parseInt(new Date().getTime() / 1000) + ''; //事件戳
+
+        let str1 = 'jsapi_ticket='+share_json.jsapi_ticket + '&noncestr=' + share_json.noncestr +'&timestamp=' + share_json.timestamp + '&url=' + req.headers.referer;
+        let token = sha1(str1);
+        return err ? reject(err) : res.send({
+          token: token, //上一步获取的 ticket
+          noncestr: share_json.noncestr, //随机字符串
+          timestamp: share_json.timestamp,
+        });
+      })
+    })
+  })
+  .catch(function(e){
+    console.log('有错误');
+  });
+
+}
+
+// 获取token后分享
+const wxGetsignature = function(req, res) {
+    getsignature(req,res);
+};
+
+// 微信分享
+const wxShare = function (req,res) {
+  if(share_json.jsapi_ticket){
+    let str1 = 'jsapi_ticket='+share_json.jsapi_ticket + '&noncestr=' + share_json.noncestr +'&timestamp=' + share_json.timestamp + '&url=' + req.headers.referer;
+    let token = sha1(str1);
+    return res.send({
+      token: token, //上一步获取的 ticket
+      noncestr: share_json.noncestr, //随机字符串
+      timestamp: share_json.timestamp, //
+    })
+  }else{
+    getsignature(req,res)
+  }
+};
+
+module.exports = {
+  wxGetsignature,
+  wxShare
+}

server/routes/index.js

@@ -6,6 +6,7 @@ const multer = require('multer')
 const upload = multer({ dest: 'upload_tmp/' })
 
 const _test = require('../controller/TestMonitor')
+const _wx = require('../controller/WxMonitor')
 
 router.use(bodyParser.json({ limit: '60mb' }))
 router.use(bodyParser.urlencoded({ extended: true, limit: '60mb' }))
@@ -14,4 +15,14 @@ router.post('/api/test', upload.any(), _test.isRun)
 
 router.use('/api/*', upload.any(), (req, res) => { res.send('暂无该接口') })
 
+// 重新获取token 在分享
+router.post('/share/getsignature', function(req, res) {
+    _wx.wxGetsignature(req,res)
+});
+
+// 微信分享
+router.post('/share/token',function(req,res) {
+    _wx.wxShare(req, res);
+});
+
 module.exports = router