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Ò»¡¢Î¢ÐÅС³ÌÐòµÇ¼Á÷³Ì¸ÅÊö

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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