Develop Reference

How to load different property value conditionally

I have a condition where I want to use the same method to be called for request coming from mobile app and request coming from webapp with different clientId and different Client secret and redirect uris,base uris .
When a request comes from mob we have header "source" value as mobile and when request comes from web we have header "source" value as web.
I want to have something like that when request comes from web ,values of client id,clientsecret,baseurl,redirecturl of web is loaded and when request comes from mobile
values of client id,clientsecret,baseurl,redirecturl of mobile is loaded.
I want to avoid to write the same logic either by creating in different method or different endpoint for mobile/web.I wan to use the same method and the same endpoint ,just that values injected from conifguration will be different based on the header value
How can I achieve this??Is there a way to #Autowire different config class based on condition
TokenController
public class TokenController {
#GetMapping("/getToken")
public ResponseEntity<?> fetchToken(#RequestParam("foo") String foo) {
ResponseEntity<?> tokenInfo = tokenInfoServiceImpl.getTokenDetails(foo);
return tokenInfo;
}}
TokenServiceImpl
public class TokenServiceImpl{
#Autowired
SSOConfig ssoConfig;
public ResponseEntity<?> getTokenDetails(String foo) {
HttpHeaders tokenExchangeHeaders = prepareRestTemplateHeader(ssoConfig.getClientId(),
ssoConfig.getClientSecret());
String baseUrl =soConfig.getBaseurl();
String redirectUrl = ssoConfig.getRedirectUrl();
//rest of the logic
}
}
SSOConfig class
#Configuration
#ConfigurationProperties(prefix = "sso.web")
public class SSOConfig {
private String baseurl;
private String redirectUrl;
private String tokenClientId;
private String tokenClientSecret;
//Getters and Setters
}

For your TokenController class, you should be able to add an argument to process a RequestHeader.
public class TokenController {
#GetMapping("/getToken")
public ResponseEntity<?> fetchToken(#RequestHeader(name = "source") String source, #RequestParam("foo") String foo) {
ResponseEntity<?> tokenInfo = null;
if ("mobile".equals(source)) {
ResponseEntity<?> tokenInfo = tokenInfoServiceImpl.getTokenDetails(foo);
} else {
//do something else
}
return tokenInfo;
}}
There's a great tutorial on this at Baeldung

How to write a feign client for an api that has multiple identically named query params?

I am trying to write a feign client to make calls to retrieve data from a server where the api accepts a list of identical named query parameters to determine how much data is being asked. Here is an example url I am trying to hit:
http://some-server/some-endpoint/{id}?include=profile&include=account&include=address&include=email
So far for my feign client I'm attempting to set it up this way:
#FeignClient("some-server")
public interface SomeServerClient {
#RequestMapping(method = RequestMethod.GET,
value = "/customers/api/customers/{id}",
produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
Map<Object, Object> queryById(
#PathVariable long id,
#RequestParam("include[]") String ... include);
default Map<Object, Object> queryById(long id) {
return queryById(id,"profile", "account", "address", "email");
}
However this doesn't appear t format the request in the way desired, so my question is how can I set up my feign client to submit its request to the url as shown in the example above?

use #RequestParam("include") List<String> includes, example:
client:
#FeignClient(value = "foo-client")
public interface FooClient {
#GetMapping("/foo")
Foo getFoo(#RequestParam("include") List<String> includes);
}
controller:
#RestController
public class FooController {
#GetMapping("/foo")
public Foo getFoo(#RequestParam("include") List<String> includes) {
return new Foo(includes);
}
}
usage:
List<String> includes = new ArrayList<>();
includes.add("foo");
includes.add("bar");
Foo foo = fooClient.getFoo(includes);
url:
http://some-server/foo?include=foo&include=bar

POST request with RequestBody is not working

in the below example, i am using POST and GET methods. post is to initialize a varibale and GET is to get this varibale.
I use Postman to make the requests.
i am receiving an error
#RequestBody(value = "val") //cant resolve method value
please let me know how to fix the belwo error so i can use post method for initialization and get methdo to retrieve the value
Controller1
#Controller
#RequestMapping("/call1")
public class Call1 {
public String str = "inti";
#RequestMapping(value = "/intiparam1", method = RequestMethod.POST)
public void intiParam1(#RequestBody(value = "val") String val) {
this.str = val;
}
#RequestMapping(value = "/getparam1", method = RequestMethod.GET)
public String getParam1() {
return this.str;
}
}

Create a class Variable and use other code in controller.
class Variable {
String data= 'val';
}
#RequestMapping(value = "/intiparam1", method = RequestMethod.POST)
public void intiParam1(#RequestBody Variable val) {
this.str = val.data;
}
When making a request pass json as {"data":"12345"}
and then use #RequestBody Variable v in code instead of String as it will serve your purpose of default value and will make the code extensible as you can add different properties to the existing variable in future if needed.

When to use #RequestBody?
You can not use value with it. You can use this when you have multiple field entity which you want to perform the operation. Let's say you want to save the user then you may need to create User Model first and use in a controller #RequestBody.
Model:
public class User
{
#Id
private int id;
private String firstname;
private String lastname;
//Getters-Setters, AllArgConstructor-constructor
}
#RequestMapping(value = "/requestBodyExample", method = RequestMethod.POST)
public String intiParam1(#RequestBody User user) {
return user.getFirstname();
}
Quick Start with Spring Boot

Java spring REST controller: incomplete request body

I have a problem with my REST Controller. If I sent a request with a RequestBody (json) some attributes doesn't arrive the controller, although they was sent and defined at model.
I could find out that it look like an old version of files will be used from the local java web server. As I changed the System.out.println Value at Constructor still the old value was outputed.
public RestController_ApiKey_2_0() {
System.out.println("RestController_ApiKey_2_0 init");
}
I tried the following things bootless:
deleted java web server and did a new installation
cleaned the project and started server again
clean install of project
Does anyone have an idea?

Please provide more code, how do you declare a controller, and what params it can take. Also show a sample request.
Here is an example of a simple controller:
A model
public class CustomRequestBody {
private String fieldA;
private String fieldB;
public String getFieldA() {
return fieldA;
}
public void setFieldA(final String fieldA) {
this.fieldA = fieldA;
}
public String getFieldB() {
return fieldB;
}
public void setFieldB(final String fieldB) {
this.fieldB = fieldB;
}
}
Controller:
#Controller
public class MyController {
#RequestMapping(value = "/some-path", method = RequestMethod.POST)
#ResponseStatus(HttpStatus.ACCEPTED)
public ResponseEntity handleSomePath(#RequestBody final CustomRequestBody body, final HttpServletRequest request) {
// Do the job.
}
And request will be:
HTTP POST http://some.server.com/some-path
{
"fieldA":"first value",
"fieldB":"second value"
}
Read more at Spring documentation here

Spring Rest Controller, Path Variables on an overriden method's arguement

I have a controller annotated with #RestController and it implements an interface:
public interface ContratEndpoint {
String ROOT = "/api/contrats";
String GET_CONTRAT = "";
String GET_CONTRAT_PER_PK = "/{idContrat}";
#RequestMapping(value = GET_CONTRAT)
Contrat getContrat(#RequestParam(value = "contratId")Long contratId);
#RequestMapping(value = GET_CONTRAT_PER_ID)
ExtContrat getContratById(#PathVariable("idContrat") Long idContrat);
}
The controller:
#RestController
#RequestMapping(value = ContratEndpoint.ROOT)
public class ContratController implements ContratEndpoint {
//Injecting Services....
#Resource
private Mapper mapper;
#Override
public Contrat getContrat(Long contratId) {
return mapper.map(contratService.get(contratId),Contrat.class);
}
#Override
public ExtContrat getContratById(#PathVariable("idContrat") Long idContrat){
Preconditions.checkArgument(idContrat !=null);
return mapper.map(contratService.get(idContrat),ExtContrat.class);
}
.The above Code works just fine.
. But For the first inherited method , I didn't have to annotate arguments with #RequestParam and it worked just fine.
As for the second method I tried at first :
#Override
public ExtContrat getContratById(Long idContrat){
Preconditions.checkArgument(idContrat !=null);
return mapper.map(contratService.get(idContrat),ExtContrat.class);
}
. I expected the same behaviour Like the first Method, But i was wrong and the code ended up firing an IllegalArgumentException because of the check in ligne Preconditions.checkArgument(idContrat!=null).
My question is what is so specific about #PathVariable that i've missed ?
Or is it just something is wrong with my approach?
Thanks.

There is difference between Request param and path variable,seee below post that you can confirm with your uri the cause for the exception :
#PathVariable is to obtain some placeholder from the uri (Spring call it an URI Template) — see Spring Reference Chapter 16.3.2.2 URI Template Patterns
#RequestParam is to obtain an parameter — see Spring Reference Chapter 16.3.3.3 Binding request parameters to method parameters with #RequestParam
Assume this Url http://localhost:8080/SomeApp/user/1234/invoices?date=12-05-2013 (to get the invoices for user 1234 for today)
#RequestMapping(value="/user/{userId}/invoices", method = RequestMethod.GET)
public List<Invoice> listUsersInvoices(
#PathVariable("userId") int user,
#RequestParam(value = "date", required = false) Date dateOrNull) {
...
}