com.hs.mail.web.controller.FetchAccountFormController.java Source code

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Here is the source code for com.hs.mail.web.controller.FetchAccountFormController.java

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/*
 * Copyright 2010 the original author or authors.
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  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.hs.mail.web.controller;

import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Store;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang.StringUtils;
import org.springframework.validation.BindException;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;

import com.hs.mail.web.fetchmail.FetchAccount;
import com.hs.mail.web.fetchmail.FetchMailer;
import com.hs.mail.web.util.RequestUtils;

/**
 * 
 * @author Won Chul Doh
 * @since Sep 2, 2010
 *
 */
public class FetchAccountFormController extends SimpleFormController {

    @Override
    protected boolean isFormSubmission(HttpServletRequest request) {
        String todo = request.getParameter("todo");
        return "docreate".equals(todo) || "doupdate".equals(todo);
    }

    @Override
    protected Object formBackingObject(HttpServletRequest request) throws Exception {
        long userID = RequestUtils.getParameterLong(request, "ID", 0);
        FetchAccount fetch = new FetchAccount();
        fetch.setUserID(userID);
        return fetch;
    }

    @Override
    protected void onBindAndValidate(HttpServletRequest request, Object command, BindException errors)
            throws Exception {
        FetchAccount fetch = (FetchAccount) command;
        rejetMandatoryField("serverName", fetch.getServerName(), errors);
        rejetMandatoryField("userName", fetch.getUserName(), errors);
        rejetMandatoryField("password", fetch.getPassword(), errors);
    }

    private void rejetMandatoryField(String field, String value, BindException errors) {
        if (StringUtils.isEmpty(value)) {
            // Mandatory field
            errors.rejectValue(field, "field.required");
        }
    }

    private Store connect(String userName, String password) throws MessagingException {
        Session session = Session.getInstance(System.getProperties(), null);
        Store store = session.getStore("imap");
        store.connect("localhost", userName, password);
        return store;
    }

    @Override
    protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command,
            BindException errors) throws Exception {
        FetchAccount fetch = (FetchAccount) command;
        String userName = RequestUtils.getParameter(request, "destUserName");
        String password = RequestUtils.getParameter(request, "destPassword");
        Store store = null;
        try {
            store = connect(userName, password);
            FetchMailer mailer = new FetchMailer(fetch, store.getFolder("INBOX"));
            mailer.fetch();
            return new ModelAndView(getSuccessView(), errors.getModel());
        } catch (Exception e) {
            return showForm(request, response, errors);
        } finally {
            if (store != null) {
                store.close();
            }
        }
    }

}