小程序如何授权给腾讯云

// 小程序端代码
wx.login({
  success: res => {
    if (res.code) {
      wx.request({
        url: 'https://your-backend-server/api/getToken', // 替换为你的后端接口地址
        method: 'POST',
        data: { code: res.code },
        success: response => {
          console.log('Token:', response.data);
        },
        fail: err => {
          console.error('Failed to get token:', err);
        }
      });
    } else {
      console.error('Login failed:', res.errMsg);
    }
  }
});

const axios = require('axios');

app.post('/api/getToken', async (req, res) => {
  const { code } = req.body;
  const secretId = 'YOUR_SECRET_ID';
  const secretKey = 'YOUR_SECRET_KEY';

  try {
    const response = await axios.post('https://sts.tencentcloudapi.com', {
      Action: 'AssumeRole',
      Version: '2018-04-16',
      RoleArn: 'YOUR_ROLE_ARN',
      RoleSessionName: 'session-name',
      DurationSeconds: 1800,
      Policy: JSON.stringify({
        Version: '2.0',
        Statement: [
          {
            Action: ['sts:AssumeRole'],
            Effect: 'Allow',
            Resource: '*'
          }
        ]
      })
    }, {
      headers: {
        'Content-Type': 'application/json',
        'X-TC-Action': 'AssumeRole',
        'X-TC-Version': '2018-04-16',
        'X-TC-Region': 'ap-guangzhou',
        'Authorization': `TC3-HMAC-SHA256 Credential=${secretId}/${new Date().toISOString().split('T')[0]}/sts/tc3_request, SignedHeaders=content-type;host;x-tc-action;x-tc-region;x-tc-version, Signature=${generateSignature(secretId, secretKey)}`
      }
    });

    res.json(response.data);
  } catch (error) {
    res.status(500).json({ error: 'Failed to get token' });
  }
});

function generateSignature(secretId, secretKey) {
  // 这里需要实现具体的签名算法，具体可以参考腾讯云官方文档
}