com.fujieid.jap.ids.endpoint.ErrorEndpoint Maven / Gradle / Ivy

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Authorization service based on RFC6749(https://tools.ietf.org/html/rfc6749) protocol specification and OpenID Connect Core 1.0(https://openid.net/specs/openid-connect-core-1_0.html) specification
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/*
 * Copyright (c) 2020-2040, 北京符节科技有限公司 ([email protected] & https://www.fujieid.com).
 * 
 * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE 3.0;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 

 * http://www.gnu.org/licenses/lgpl.html
 * 

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.fujieid.jap.ids.endpoint;

import com.fujieid.jap.http.JapHttpRequest;
import com.fujieid.jap.http.JapHttpResponse;
import com.fujieid.jap.http.RequestUtil;
import com.fujieid.jap.ids.model.enums.ErrorResponse;
import com.xkcoding.json.util.StringUtil;

import java.io.IOException;
import java.nio.charset.StandardCharsets;

/**
 * OAuth 异常
 *
 * @author yadong.zhang (yadong.zhang0415(a)gmail.com)
 * @version 1.0.0
 * @since 1.0.0
 */
public class ErrorEndpoint extends AbstractEndpoint {

    /**
     * Generate the html of the error authorization page
     *
     * @param error            error type
     * @param errorDescription error description
     * @return error page html
     */
    public String createErrorPageHtml(String error, String errorDescription) {
        return generateErrorPageHtml(error, errorDescription);
    }

    /**
     * Obtain exception information from the request url and display the exception page
     *
     * @param request  current HTTP request
     * @param response current HTTP response
     * @throws IOException IOException
     */
    public void showErrorPage(JapHttpRequest request, JapHttpResponse response) throws IOException {
        ErrorResponse errorResponse = ErrorResponse.getByError(RequestUtil.getParam("error", request));
        String errorPageHtml = createErrorPageHtml(errorResponse.getError(), errorResponse.getErrorDescription());
        response.setContentType("text/html;charset=UTF-8");
        response.setContentLength(errorPageHtml.getBytes(StandardCharsets.UTF_8).length);
        response.write(errorPageHtml);
    }

    /**
     * Display customized exception content
     *
     * @param error            error type
     * @param errorDescription error description
     * @param response         current HTTP response
     * @throws IOException IOException
     */
    public void showErrorPage(String error, String errorDescription, JapHttpResponse response) throws IOException {
        String errorPageHtml = createErrorPageHtml(error, errorDescription);
        response.setContentType("text/html;charset=UTF-8");
        response.setContentLength(errorPageHtml.getBytes(StandardCharsets.UTF_8).length);
        response.write(errorPageHtml);
    }


    private String generateErrorPageHtml(String error, String errorDescription) {
        String html = "\n"
            + "\n"
            + "  \n"
            + "    \n"
            + "    \n"
            + "    \n"
            + "    \n"
            + "    Oops!, something went wrong\n"
            + "    \n"
            + "  \n"
            + "  \n"
            + "     
\n"
            + "        
Oops!, something went wrong
\n";
        if (StringUtil.isNotEmpty(error)) {
            html += "" + error + "";
        }
        html += "        \n" + errorDescription + "        \n"
            + "        Feel free to contact us.\n"
            + "        Please try again.\n" +
            "\n" +
            "";
        return html;
    }
}