HTTPBasicAuthFilter.java

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package com.sun.jersey.api.client.filter;

import com.sun.jersey.api.client.ClientHandlerException;
import com.sun.jersey.api.client.ClientRequest;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.core.util.Base64;
import java.io.UnsupportedEncodingException;
import javax.ws.rs.core.HttpHeaders;

/**
 * Client filter adding HTTP Basic Authentication header to the HTTP request,
 * if no such header is already present
 *
 * @author Jakub.Podlesak@Sun.COM, Craig.McClanahan@Sun.COM
 */
public final class HTTPBasicAuthFilter extends ClientFilter {

    private final String authentication;

    /**
     * Creates a new HTTP Basic Authentication filter using provided username
     * and password credentials
     *
     * @param username
     * @param password
     */
    public HTTPBasicAuthFilter(final String username, final String password) {
        try {
            authentication = "Basic " + new String(Base64.encode(username + ":" + password), "ASCII");
        } catch (UnsupportedEncodingException ex) {
            // This should never occur
            throw new RuntimeException(ex);
        }
    }

    @Override
    public ClientResponse handle(final ClientRequest cr) throws ClientHandlerException {

        if (!cr.getMetadata().containsKey(HttpHeaders.AUTHORIZATION)) {
            cr.getMetadata().add(HttpHeaders.AUTHORIZATION, authentication);
        }
        return getNext().handle(cr);
    }
}