无法通过链接春季到达

Question

I am new with Spring framework and right now I'm trying to learn few things but facing a problem. (Learning from this tutorial https://spring.io/guides/gs/rest-service/ ). So by default, I can launch my program via localhost../greeting , but what if I want to change the name not like in the website with /greeting?name=xx , but for example /greeting/Tom.. ( /greeting/{name} )

Answer 1

The thing you need here is called PathVariable. This article is very useful to understand all the difference between types of requesting

https://www.quora.com/What-is-the-difference-between-QueryParam-and-pathParam-in-Webservices

Answer 2

In GreetingController:

Instead of this:

@RequestMapping("/greeting")
public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name)

Implement this:

@RequestMapping("/greeting/{name}") 
public Greeting greeting(@PathVariable("name") String name)

for optional path variable:

@PathVariable Optional<String > name