Develop Reference

Using a String variable in RequestMapping value

I have the following:
#Value("${apiVersion")
private String apiVersion;
#RequestMapping(value = "/{apiVersion}/service/call", method = RequestMethod.POST)
And I expected the URL to be:
/apiVersion/service/call
But it turns out {foo} accept any value, it doesn't actually use the String.
Is there a way for me to use the String value as part of the URL?
EDIT
The issue is that I have multiple calls that us that value.
#RequestMapping(value = apiVersion + "/call1", method = RequestMethod.POST)
#RequestMapping(value = apiVersion + "/call2", method = RequestMethod.POST)
#RequestMapping(value = apiVersion + "/call3", method = RequestMethod.POST)
etc.
Technically I can declare constants for each one like you suggested, but it doesn't sound optimal. If there is no way to do it then it is fine, I was just wondering if there is.
SOLUTION
Adding general mapping to the controller.
#RequestMapping("${apiVersion}")

If you want to apply it for all methods in a controller declare it on the controller class level:
#RestController
#RequestMapping("/test")
public class MyController { ...
and you do not need to prepend it before method path.
Otherwise it should be constant so like:
private static final String FOO = "test";
and prepend it before method path like:
FOO + "/service/call"

If you just want to predefine the path in Java just do
#RequestMapping(value = foo + "/service/call", method = RequestMethod.POST)
PathVariables in SpringMvc are meant to be a placeholder for endpoints like in the following
#GetMapping(value = "/books/{id}")
public String displayBook(#PathVariable id) { ... }

Request method 'GET' not supported but it's actually present in Controller

I was developing a simple CRUD application, when i've encountered a this weird error. Weird, because in my controller class convenient #RequestMapping annotated method is present with request GET method mapping. The requested URI is [context]/purchase/change/2. The error is following:
org.springframework.web.servlet.PageNotFound - Request method 'GET' not supported
and there is my controller:
#Controller
#RequestMapping("/purchase")
public class PurchasesController {
//...
#RequestMapping(value = "/add/{userId}", method = RequestMethod.GET)
public String addPurchase(Model model, #PathVariable int userId) {
//that method works with mapping ex. "context/purchase/add/1"
return "purchase_update_add";
}
#RequestMapping(value = "/add/{userId}", method = RequestMethod.POST)
public String addPurchase(
#ModelAttribute("purchase") PurchaseDTO purchaseDto,
#PathVariable int userId) {
//that works too
return "redirect:/user/" + userId;
}
#RequestMapping(value = "/change/${purchaseId}", method = RequestMethod.GET)
public String changePurchaseDate(Model model, #PathVariable int purchaseId) {
model.addAttribute("operation", "change");
PurchaseDTO purchase = new PurchaseDTO();
Purchase purchaseEntity = purchasesDAO.getPurchase(purchaseId);
purchase.setDate(purchaseEntity.getDate());
purchase.setId(purchaseId);
model.addAttribute("purchase", purchase);
return "purchase_update_add";
}
#RequestMapping(value = "/change/{userId}", method = RequestMethod.POST)
public String changePurchaseDate(
#ModelAttribute("purchase") PurchaseDTO purchaseDto,
#PathVariable int userId) {
Purchase purchase = purchasesDAO.getPurchase(purchaseDto.getId());
purchase.setDate(purchaseDto.getDate());
purchasesDAO.updatePurchase(purchase);
return "redirect:/user/" + userId;
}

You've created a Path Variable with ${...} syntax:
#RequestMapping(value = "/change/${purchaseId}", method = RequestMethod.GET)
^ $ is redundant
Use the correct {...} syntax instead:
#RequestMapping(value = "/change/{purchaseId}", method = RequestMethod.GET)

Spring RequestMapping conflicts

I have a RequestMapping that displays a grid, and another one for loading objects in grid.
#RequestMapping(value = "/grid/{objType}", method = RequestMethod.GET)
public String displayGrid(Model model, #PathVariable("objType") String objType) {
// some code here
}
#RequestMapping(value = "/loadGrid", method = RequestMethod.GET)
public #ResponseBody String loadGrid(Model model) {
// returns a JSON
}
When i display the grid the url is like ../grid/User
The problem is that after the grid is created and a request loadGrid is made, the request is mapped to /grid/loadGrid which is resolved by the first method instead of the second one.
Is there any way to make a request for /grid with nothing after it ?
Or any way to resolve this conflict ?

The collision isn't a problem; spring resolves exact matches first. (see the source code of AbstractHandlerMethodMapping)
Your problem is that you've incorrectly defined your mappings. If you define a #RequestMapping at the class level, all the method #RequestMappings will be prefixed with the defined value.
The following maps three endpoints: /grid, /grid/{objType} and /grid/loadGrid. Note that the #RequestMapping for get() defines no value, only its method because it inherits from the class-level annotation.
#Controller
#RequestMapping(value = "/grid")
public class GridController {
#RequestMapping(method = RequestMethod.GET)
public String get(Model model) {
// ...
}
#RequestMapping(value = "/{objType}", method = RequestMethod.GET)
public String displayGrid(Model model, #PathVariable("objType") String objType) {
// ...
}
#ResponseBody
#RequestMapping(value = "/loadGrid", method = RequestMethod.GET)
public String loadGrid(Model model) {
// ...
}
}

how can i read #Pathvariable name and value using HandlerInterceptor in spring?

My code is :
#RequestMapping(value = "productDescription/{productId}/{competitorList}", method = RequestMethod.GET)
#ResponseBody
public ProductDescription getProductDescription(
#PathVariable String productId, #PathVariable String competitorList) {
return service.getProductDescription(productId, competitorList);
}
Using HttpServletRequest request in postHandler method, I want to read the pathvariable names and values.
I am able to get parameter name and values using request.getParameterMap() method if I'm using #RequestParam instead #Pathvariable.

Try this:
#RequestMapping(value = "productDescription/{productId}/{competitorList}", method = RequestMethod.GET)
#ResponseBody
public ProductDescription getProductDescription(#PathVariable("productId") String productId, #PathVariable("competitorList") String competitorList) {
return service.getProductDescription(productId, competitorList);
}

RequestMapping with multiple values with pathvariable - Spring 3.0

#RequestMapping(value = {"/userDetails", "/userDetails/edit/{id}"}, method = RequestMethod.GET)
public String userDetails(Map Model,****) {
//what goes here?
}
What will be my arguments to the userDetails method? And how do I differentiate /userDetails and /userDetails/edit/9 within the method?

Ideally we can get pathvariable by using annotation #PathVariable in method argument but here you have used array of url {"/userDetails", "/userDetails/edit/{id}"} so this will give error while supply request like localhost:8080/domain_name/userDetails , in this case no id will be supplied to #PathVariable.
So you can get the difference (which request is comming through) by using argument HttpServletRequest request in method and use this request object as below -
String uri = request.getRequestURI();
Code is like this -
#RequestMapping(value = {"/userDetails", "/userDetails/edit/{id}"}, method=RequestMethod.GET)
public String userDetails(Map Model,HttpServletRequest request) {
String uri = request.getRequestURI();
//put the condition based on uri
}