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Java Spring Basics Modeling, Storing, and Presenting Data Create an Index Page That Presents a List of Data

Posted by Nabil Nader
Nabil Nader
8,848 Points

Question about @RequestMapping

in Class GifController we did this 

@RequestMapping("/gif/{name}")
public String gifDetails(@PathVariable String name , ModelMap modelMap){

            Gif  gif = gifRepository.findByName(name);

        modelMap.put("gif",gif);
        return  "gif-details";
    }

but I want to set I default value if the user enter the URL without the name localhost:8080/gif any idea how to do this

thanks in advance

1 Answer

Asif Ahmed
Asif Ahmed
2,881 Points
Asif Ahmed
Asif Ahmed
2,881 Points

There's several ways to do this. You could simply create a new @RequestMapping("/gif") method for the more general case where no name value is given. You could make the method handle both cases explicitly like this @RequestMapping(value = {"/gif", "/gif/{name}"}), and inside the method, check if name == null, then do something based on that.

Take a look at the explanation given at this link https://www.baeldung.com/spring-optional-path-variables