PrintingErrorHandler.java

/*
 * Copyright (c) 2017, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.glassfish.jersey.tests.jaxrs.inject;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;

import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.ext.ExceptionMapper;
import javax.ws.rs.ext.Provider;

/**
 * Exception mapper printing the {@link Status#NOT_ACCEPTABLE} error.
 */
@Provider
public class PrintingErrorHandler implements ExceptionMapper<Throwable> {

    @Override
    public Response toResponse(Throwable throwable) {
        throwable.printStackTrace();

        Writer result = new StringWriter();
        PrintWriter printWriter = new PrintWriter(result);
        throwable.printStackTrace(printWriter);
        return Response.status(Status.NOT_ACCEPTABLE).entity(result.toString())
                .build();
    }
}