com.callidusrobotics.droptables.exception.HtmlWebApplicationException.java Source code

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/**
 * Copyright (C) 2015 Rusty Gerard
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.callidusrobotics.droptables.exception;

import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import org.apache.commons.lang3.exception.ExceptionUtils;

/**
 * HTTP error response that produces an HTML error message.
 *
 * @author Rusty Gerard
 * @since 0.0.1
 */
public class HtmlWebApplicationException extends WebApplicationException {
    private static final long serialVersionUID = -7334525235445194321L;

    public HtmlWebApplicationException(Throwable cause, Response.Status status) {
        super(cause, Response.status(status).type(MediaType.TEXT_HTML)
                .entity(getMessage(cause, status.getStatusCode())).build());
    }

    protected static String getMessage(Throwable cause, int statusCode) {
        StringBuilder builder = new StringBuilder();
        builder.append("<html><head><title>");
        builder.append(statusCode);
        builder.append(" Error</title></head><body><pre>");
        builder.append(ExceptionUtils.getStackTrace(cause));
        builder.append("</pre></body></html>");

        return builder.toString();
    }
}