I am trying to make simple access with headers using Jersey2. I read Jersey 2.x: How to add headers on a RESTful Client to help create my code below, but I'm not very lucky. I created clientRequestFilteras suggested, but I don’t know how to register it with the client correctly, which, I think, can be my main problem.
I hope to get a health check to see what I am doing wrong, need to register clientRequestFilter, or if I am missing more. Below is the documentation of the web service I'm trying to use, and my client code jersey2 to try to use it.
Web Service Documentation:
GET EXAMPLE (for "reading" a client with identifier No. 1)
GET https://myportal.0.site.com/ApiService.svc/Customer/1 HTTP/1.1
Content-Type: application/json
Token: <enter your unique token here>
Host: myportal.0.site.com
Content-Length: 0
Connection: Keep-Alive
ServerName: myportal
My logic is:
Below is the pom and code.
Pom dependencies:
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
<version>2.22.1</version>
</dependency>
The code:
final String portal = "myportal";
final String host = portal + ".0.site.com";
final String baseURL = "https://" + host + "/ApiService.svc";
final String token = "00000-0000-0000-0000-0000-000000";
final String getCustomer1URL = baseURL + "/Customer/1";
final String contentType = "application/json";
final String contentLength = "0";
final String connection = "Keep-Alive";
try {
ClientRequestFilter clientRequestFilter = new ClientRequestFilter() {
public void filter(ClientRequestContext clientRequestContext) throws IOException {
clientRequestContext.getHeaders().add("Token", token);
clientRequestContext.getHeaders().add("ServerName", serverName);
clientRequestContext.getHeaders().add("Content-Type", contentType);
clientRequestContext.getHeaders().add("Content-Length", contentLength);
clientRequestContext.getHeaders().add("Connection", connection);
}
};
ClientConfig config = new ClientConfig();
Client client = ClientBuilder.newBuilder().newClient(config);
final Response response = client.target(getCustomer1URL).request().get();
if (response.getStatus() != 200) {
throw new RuntimeException("Failed : HTTP error code : " + response.getStatus());
}
String output = response.readEntity(String.class);
System.out.println("Output from Server... \n");
System.out.println(output);
client.close();
} catch (Exception e) {
e.printStackTrace();
}
What I get:
With the above, I get an answer <!DOCTYPE html>with html as a web page, including javascript ... Which makes me think that maybe I didn’t create something properly or that I am not setting the headers or something else correctly. Hoping someone can give me a check on what I'm doing wrong.