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1. Óû§´ò¿ªÐ¡³ÌÐò£¬´¥·¢µÇ¼Á÷³Ì¡£
2. С³ÌÐòͨ¹ýwx.login½Ó¿Ú»ñÈ¡ÁÙʱµÇ¼ƾ֤£¨code£©¡£
3. ½«code·¢Ë͸ø¿ª·¢Õß·þÎñÆ÷£¬¿ª·¢Õß·þÎñÆ÷ͨ¹ý΢ÐÅÌṩµÄAPI£¬»ñÈ¡µ½Óû§µÄopenidºÍsession_key¡£
4. ÅжÏÓû§ÊÇ·ñÒÑ×¢²á£¬Èç¹ûÒÑ×¢²á£¬ÔòÖ±½Ó·µ»ØµÇ¼̬£»Èç¹ûδע²á£¬Ôò½øÐÐ×¢²áºó·µ»ØµÇ¼̬¡£
5. С³ÌÐò¶Ë´æ´¢µÇ¼̬£¬ºóÐøµ÷ÓýӿÚʱЯ´øµÇ¼̬½øÐÐÉí·ÝУÑé¡£
¶þ¡¢Î¢ÐÅС³ÌÐòµÇ¼·½Ê½
1. ΢ÐÅÊÚȨµÇ¼
΢ÐÅÊÚȨµÇ¼ÊÇÒ»ÖÖÒÀÀµÓÚ΢ÐÅÆ½Ì¨µÄµÇ¼·½Ê½£¬Óû§ÎÞÐèÌîдÕ˺źÍÃÜÂ룬ֻÐèÊÚȨ¼´¿ÉÍê³ÉµÇ¼¡£ÕâÖÖ·½Ê½¼ò±ã¿ì½Ý£¬Ìá¸ßÁËÓû§ÌåÑé¡£
2. Õ˺ÅÃÜÂëµÇ¼
Õ˺ÅÃÜÂëµÇ¼ÊÇÒ»ÖÖ´«Í³µÄµÇ¼·½Ê½£¬Óû§ÐèÒªÌṩÕ˺źÍÃÜÂë½øÐеǼ¡£ÕâÖÖ·½Ê½ÊÊÓÃÓÚÐèÒª¶ÀÁ¢Õ˺ÅÌåϵµÄС³ÌÐò¡£
Èý¡¢Î¢ÐÅС³ÌÐòµÇ¼´úÂëʾÀý
1. »ñÈ¡code
```javascript
wx.login({
success: function(res) {
if (res.code) {
// ·¢ËÍ res.code µ½ºǫ́»»È¡ openId, sessionKey, unionId
console.log('»ñÈ¡code³É¹¦', res.code);
} else {
console.log('»ñÈ¡Óû§µÇ¼̬ʧ°Ü£¡' + res.errMsg);
}
}
});
```
2. ·¢ËÍcode¸øºǫ́£¬ºǫ́»ñÈ¡openidºÍsession_key
```javascript
const request = require('request');
const appId = 'yourAppID';
const appSecret = 'yourAppSecret';
const code = 'codeFromWxLogin';
const url = `https://api.weixin.qq.com/sns/jscode2session?appid=${appId}&secret=${appSecret}&js_code=${code}&grant_type=authorization_code`;
request(url, (error, response, body) => {
if (!error && response.statusCode === 200) {
console.log('»ñÈ¡openidºÍsession_key³É¹¦', body);
} else {
console.log('»ñÈ¡openidºÍsession_keyʧ°Ü', error);
}
});
```
3. Óû§×¢²á»òµÇ¼
¸ù¾Ý»ñÈ¡µ½µÄopenidºÍsession_key£¬½øÐÐÓû§×¢²á»òµÇ¼²Ù×÷£¬·µ»ØµÇ¼̬¸øÐ¡³ÌÐò¶Ë¡£
4. С³ÌÐò¶Ë´æ´¢µÇ¼̬²¢½øÐÐÉí·ÝУÑé
```javascript
wx.setStorageSync('loginStatus', 'yourLoginStatus');
// µ÷ÓýӿÚʱЯ´øµÇ¼̬
wx.request({
url: 'yourApiUrl',
data: {
loginStatus: wx.getStorageSync('loginStatus')
},
success: function(res) {
// ´¦Àí½Ó¿Ú·µ»ØµÄÊý¾Ý
}
});
```
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