How to develop java to obtain SMS verification code

You can go directly to the three major operators to sign the agreement, but it is more troublesome. You have to make a separate commitment to the monthly consumption package, and submit the figures according to the three operators when sending it.

Generally, SMS service providers call the interface directly, but now there are too many such services, which are uneven. If you want to find a direct connection with an operator, the agent is unreliable, and the arrival rate and arrival time are all problems.

The bmob I am currently using is quite good. I will give away dozens of them for free. I'll give it a try and buy it if I feel good.

See more, try more, and consider the channel, arrival rate and arrival speed.