Spring Mvc–uri templates__spring

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In spring mvc, a URL path is used to access the methods in the controller, and the URI template is available in the path with the @requestmapping annotation. Use the @pathvariable annotation to indicate that the parameters in the method should correspond to the variables in the URI template, as follows: View source print?

1	@RequestMapping (value= "/owners/{ownerid}", Method=requestmethod.get)

2	public string Findowner (@PathVariable string ownerid, model model) {

3	Owner owner = ownerservice.findowner (ownerid);

4	Model.addattribute ("owner", owner);

5	return "Displayowner";

6

}

The URI template "/owners/{ownerid}" specifies a variable named ownerid. When the method is requested, the value of the ownerid is assigned to the requested URI, such as a request for/owners/fred, then the ownerID parameter in the method is assigned to Fred. You must ensure that the parameter name and the URI template variable name are consistent to automatically assign a value, and you want to customize the parameter variable to include the parameter in the @pathvariable note, as follows: View source print?

1	@RequestMapping (value= "/owners/{ownerid}", Method=requestmethod.get)

2	public string Findowner (@PathVariable ("ownerID") string Theowner, model model) {

3	Implementation omitted

4

}

Of course, you can also use multiple @pathvariable to bind multiple URI template variables, as follows: View source print?

1	@RequestMapping (value= "/owners/{ownerid}/pets/{petid}", Method=requestmethod.get)

2	public string Findpet (@PathVariable string ownerid, @PathVariable string petid, model model) {

3	Owner owner = ownerservice.findowner (Ownderid);

4	Pet pet = Owner.getpet (Petid);

5	Model.addattribute ("Pet", pet);

6	return "Displaypet";

7

}

The following code shows the use of a variable as a relative path, and the Findpet () method is invoked when the request is/OWNERS/42/PETS/21. View Source print?

1	@Controller

2	@RequestMapping ("/owners/{ownerid}")

3	public class Relativepathuritemplatecontroller {

4	@RequestMapping ("/pets/{petid}")

5	public void Findpet (@PathVariable string ownerid, @PathVariable string petid, model model) {

6	Implementation omitted

7

}

8

}

The parameters in @PathVariable and methods can be any simple data type, for example: Int,long,date, and so on. Spring automatically converts and throws a typemismatchexception if it does not match.