CODEWITHSUNDEEP
javaspringspring-securityspring-security-oauth2
user871199
user871199

Reputation: 1520

How to set headers Spring oauth AccessTokenRequest

I am trying to call setHeaders method of org.springframework.security.oauth2.client.token.AccessTokenRequest and not able to do it.

Class org.springframework.security.oauth2.client.token.AccessTokenRequest declares

void setHeaders(Map<? extends String, ? extends List<String>> headers);

Questions:

  1. Since String is a final class in java, what purpose does it solve to say "? extends String" in the declaration.

  2. How do I create my map and put entry in it. I have tried following

    final Map<? extends String, ? extends List<String>> headers = accTknReq.getHeaders();
final List<String> lst1 = headers.get("MyHeader");
final ArrayList<String> lst2 = new ArrayList<>();
headers.put("MyHeader", lst1);
headers.put("MyHeader", lst2);

In both cases I get following compiler error

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project : Compilation failure: Compilation failure:

[ERROR] :[33,24] method put in interface java.util.Map cannot be applied to given types; [ERROR] required: capture#1 of ? extends java.lang.String,capture#2 of ? extends java.util.List [ERROR] found: java.lang.String,java.util.List

Upvotes: 1

Views: 913

Answers (1)

srkavin
srkavin

Reputation: 1180

For your second question, you can try something like the following to set headers.

final Map<String, List<String>> headers = new HashMap<>(accTknReq.getHeaders());

Upvotes: 3

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