Read entire query string(request parameter) in Spring Boot/HttpServlet
In Spring Boot and other Java web frameworks, we capture the request parameters (aka query parameters) and map them to individual variable or a Map<String,String>.
But, if you want to read the entire query parameter in its raw form ( eg: to read name=Ganesh&country=Nepal&ageLt=30&page=1 from request: http://localhost:8080/search?name=Ganesh&country=Nepal&ageLt=30&page=1), you can utilize HttpServletRequest.getQueryString()
Example:
@GetMapping("/test1")
void endpoint1(HttpServletRequest req) {
var qs = req.getQueryString() //returns the entire string
qs.split("&") //split to get the individual parameters
}
Note: Spring Boot automatically resolves the HttpServletRequest object ( its the real holder of request object in Http Servlet environment)
