com.github.zhanhb.ckfinder.connector.support.XmlExceptionHandler.java Source code

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Here is the source code for com.github.zhanhb.ckfinder.connector.support.XmlExceptionHandler.java

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/*
 * CKFinder
 * ========
 * http://cksource.com/ckfinder
 * Copyright (C) 2007-2015, CKSource - Frederico Knabben. All rights reserved.
 *
 * The software, this file and its contents are subject to the CKFinder
 * License. Please read the license.txt file before using, installing, copying,
 * modifying or distribute this file or part of its contents. The contents of
 * this file is part of the Source Code of CKFinder.
 */
package com.github.zhanhb.ckfinder.connector.support;

import com.github.zhanhb.ckfinder.connector.api.CKFinderContext;
import com.github.zhanhb.ckfinder.connector.api.ConnectorException;
import com.github.zhanhb.ckfinder.connector.api.ExceptionHandler;
import com.github.zhanhb.ckfinder.connector.api.ResourceType;
import com.github.zhanhb.ckfinder.connector.handlers.response.Connector;
import com.github.zhanhb.ckfinder.connector.handlers.response.CurrentFolder;
import com.github.zhanhb.ckfinder.connector.handlers.response.Error;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.springframework.util.StringUtils;

/**
 * Class to handle errors from commands returning XML response.
 */
public enum XmlExceptionHandler implements ExceptionHandler {

    INSTANCE;

    @Override
    public void handleException(HttpServletRequest request, HttpServletResponse response, CKFinderContext context,
            ConnectorException connectorException) throws IOException {
        HttpSession session = request.getSession(false);
        String userRole = session == null ? null : (String) session.getAttribute(context.getUserRoleName());

        Connector.Builder connector = Connector.builder();
        String currentFolder = connectorException.getCurrentFolder();
        ResourceType type = connectorException.getType();

        int errorNum = connectorException.getErrorCode().getCode();

        if (type != null) {
            String typeName = type.getName();
            connector.resourceType(typeName);
            if (StringUtils.hasLength(currentFolder)) {
                connector.currentFolder(
                        CurrentFolder.builder().path(currentFolder).url(type.getUrl() + currentFolder)
                                .acl(context.getAccessControl().getAcl(typeName, currentFolder, userRole)).build());
            }
        }
        connector.error(Error.builder().number(errorNum).value(connectorException.getMessage()).build());
        String result = XmlCreator.INSTANCE.toString(connector.build());

        response.setContentType("text/xml");
        response.setCharacterEncoding("UTF-8");
        response.setHeader("Cache-Control", "no-cache");
        try (PrintWriter out = response.getWriter()) {
            out.write(result);
        }
    }

}