JUPITER, Fla. — Matt Harvey’s exhibition season went so smoothly, he should have called it “spring break.”

But instead of patrolling the Florida beaches and staying out for all-night parties, the Mets ace got his satisfaction by demonstrating his rehab from Tommy John surgery was a smashing success.

On Thursday, he fired a final Grapefruit League gem with four shutout innings for the Mets in their scoreless tie with the Cardinals. The right-hander allowed four hits and struck out four.

Harvey finished his exhibition season 1-1 with a 1.19 ERA in six starts with 21 strikeouts and one walk in 22 2/3 innings. The Mets will certainly take anything close to that beginning next Thursday, when Harvey is scheduled to face the Nationals in his first start of the season.

“I think all of us are pretty much ready to go,” Harvey said. “Everything feels great – as it has all spring training – so I don’t think there is much more to accomplish.”

Harvey threw 56 pitches in Thursday’s tune-up and will be on a count for his first regular-season start, but manager Terry Collins didn’t want to divulge specifics. In his penultimate start of the exhibition season, Harvey threw 80 pitches against the Cardinals.

Collins couldn’t have asked for a better spring from his staff horse.

“We came in hoping to find out what we have, and we’ve got the same guy we saw two years ago,” Collins said. “We’re excited to get him out there when the games start.”

What did catcher Travis d’Arnaud see from Harvey this spring?

“That he’s been ready since his first outing,” d’Arnaud said. “You can tell mentally he’s been ready – he has wanted to get back out there and pitch in the city of New York. You can tell that he’s wanted to go out there for all of us and get us wins, put zeroes on the board and you can tell that he’s ready to start having fun again.”

Mets pitching coach Dan Warthen said the fact Harvey waited 16 months to resume, after undergoing Tommy John surgery in October 2013, factored into his seamless return to competition.

“Everything that he did he looked like the old Harvey,” Warthen said. “His delivery was wonderful – he made all of his side [throwing sessions] and did everything he was supposed to do. I was extremely happy with the entire spring.”

D’Arnaud appreciated the opportunity to work an entire spring with Harvey. In 2013, d’Arnaud arrived to the major leagues only a week before Harvey was diagnosed with a torn ligament in his elbow and only had one opportunity to catch the right-hander.

“He knows his stuff,” d’Arnaud said. “His stuff is not the same as everybody else’s, so it helps a lot that he knows his stuff. You can be a lot more aggressive.

“You either get more strikeouts, you can pitch to contact, pretty much pitch to situations. There are so many things you can do with the stuff that he has, that is why he is so hard to hit.”

Harvey seemed most proud of the fact he didn’t walk a batter in his final four appearances of the spring.

“You hear stories of guys who have trouble with command coming back [from Tommy John surgery],” Harvey said. “That was something I really worked on, and you never know until you start facing hitters and get into a game, but to know that I did that, I was pretty pleased.”