How to Redirect from blogger blogspot to .com domain

Most of the Blogger start with a blogspot blog, and later on they move to wordpress. Many of them migrate their blog to wordpress and some of them leave blogspot blog behind. If you are migrating to self hosted wordpress blogand keeping the same niche best advice will be migrate your blogspot to wordpress.Though in case if you old blogspot blog does not fit your new niche, instead of leaving it like that, you can use it to drive some traffic to your new blog. The idea here is to divert all the traffic from a blogspot blog to your wordpress