io.github.benas.todolist.web.interceptors.SessionHandlerInterceptor.java Source code

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Here is the source code for io.github.benas.todolist.web.interceptors.SessionHandlerInterceptor.java

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/*
 * The MIT License
 *
 *  Copyright (c) 2015, Mahmoud Ben Hassine (mahmoud.benhassine@icloud.com)
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *  THE SOFTWARE.
 */

package io.github.benas.todolist.web.interceptors;

import io.github.benas.todolist.web.util.SessionData;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Interceptor to ensure that access to user data is allowed only for logged users.
 *
 * @author Mahmoud Ben Hassine (mahmoud.benhassine@icloud.com)
 */
public class SessionHandlerInterceptor extends HandlerInterceptorAdapter {

    @Autowired
    private SessionData sessionData;

    @Override
    public boolean preHandle(final HttpServletRequest request, final HttpServletResponse response,
            final Object handler) throws Exception {
        if (sessionData.getUser() == null) {
            response.sendRedirect("/login");
            return false;
        } else {
            return true;
        }
    }
}