How to pass input parameters to spring ReST web service avoiding SQL injection -

i'm creating spring rest application & passing input paramaters service using "wiztools.org restclient 3.2.2" follows

{ "user_id": 23, "user_email_id": "a@a.com", "user_password": "fdsdsdf", "firstname": "select * user  user_email_id =  'anything' or 'x'='x'", "lastname": "sadffsd", "mobile_number": "1414141414", "user_status": 1, "isdeleted": 0, "created_by": 1, "profile_picturename": "kfksdjfhksjd", "address": "sfdsdfsd" 

}

here first name want make sure sql injection should not injected along input parameters provide safety user. can anybudy suggest me suggestion same

thanks in advance