调用wx.login一直失败，执行fail，是必须先认证才能调用吗？刚开始研究小程序，不太清楚
相关文档
- wx.offLocalServiceResolveFail: 小程序/开发/API/网络/mDNS/wx.offLocalServiceResolveFail
- wx.onLocalServiceResolveFail: 小程序/开发/API/网络/mDNS/wx.onLocalServiceResolveFail
- wx.login: 小程序/开发/API/开放接口/登录/wx.login
- wx.offLocalServiceResolveFail#参数: 小程序/开发/API/网络/mDNS/wx.offLocalServiceResolveFail
- wx.onLocalServiceResolveFail#参数: 小程序/开发/API/网络/mDNS/wx.onLocalServiceResolveFail
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