Getting NPE while setting headers in post request

Question

I'm trying to draft a post request and while doing so it is giving NPE. I'm using rest assured and cucumber.

PFB code from SalesCRM.java:

HashMap <String, String> headers;

JSONObject payload = new JSONObject();
BigInteger endPlacementTimestamp = new BigInteger("1593611640000");
BigInteger startPlacementTimestamp = new BigInteger("1594216440000");
payload.put("endPlacementTimestamp",endPlacementTimestamp );
payload.put("startPlacementTimestamp",startPlacementTimestamp);
headers.put("authorization","Bearer cd70f469-b963-48f1-9486-fe5d5e3c443b");//line76
response = (Response) AuxiliarMethods.postRequest(url,values,headers,"application/json",payload.toJSONString());

Stack trace:

java.lang.NullPointerException

at locustTask.SalesCRM.execute(SalesCRM.java:76)

at com.github.myzhan.locust4j.AbstractTask.run(AbstractTask.java:63)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at java.lang.Thread.run(Thread.java:748)

Júlio Falbo Júlio Falbo · Accepted Answer · 2020-07-09T13:24:12

The issue is not in that code.

As you can see here: at locustTask.SalesCRM.execute(SalesCRM.java:76)

It means that the NPE is happening in class SalesCRM line 76.

UPDATE

Now it is more clear, thank you.

Your problem is because your are trying to call the method ‘.put’ for a object that was not initialized.

Your object “headers” is null.

To fix it just initialize the object.

HashMap <String, String> headers = new HashMap<>();

Getting NPE while setting headers in post request

1 Answers