I'm trying to invoke a rest API with SpringBoot RestTemplate. It was given to me the API address, and from the browser I could export the .cer file.
However, I've read some about what should I do, and It's been confusing.
Some can give me a snippet or insight about this. The ApI is exposed securely. I should use this certificate to invoke the API securely. Do I have to generate pks file from .cer file?
Thanks in advance.
Similar question was asked and answered before, see here: https://stackoverflow.com/a/63426053/6777695
The rest template uses Apache http client under the covers. You need to provide a custom SSLContext to it. The above link has examples for the client configuration and the creation of the SSLContext.
I would recommend to create a jks or p12 file and import the cer file. Afterwords YouCan supply this p12 or jks file to the SSLContext builders/factories.
An example command for creating and importing could be the following snippet:
keytool -keystore truststore.jks -importcert -file /path/to/server.cer -alias server
