未处理的异常：SocketException：操作系统错误：连接被拒绝，errno = 111，地址= 127.0.0.1，端口= 40712

Question

Future<User> registerUser(String username, String firstname, String lastname, String password, String email) 
      async {
        print("\n\n\n\n\n\n\nHello\n\n\n\n\n\n\n\n");
        final response = await client
            .post('http://127.0.0.1:5000/api/register', // the error exists here
            // headers: "", 
            body: jsonEncode({
              "emailaddress": email,
              "username": username,
              "password": password,
              "first_name": firstname,
              "last_name": lastname
            })
          );

我尝试将<uses-permission android:name="android.permission.INTERNET"/>添加到清单中并更改模拟器上的代理。谢谢

Answer 1

127.0.0.1 是本地主机环回地址。您需要使用机器的实际 IP 地址来建立连接。