searchaction.java

java电子相册一般网页里面实现图片切换的这个电子相册的代码

/* ====================================================================
 * $Id$
 * ====================================================================
 *  文件名    SearchAction.java
 *  机能名    
 *  履历      2005-1-30 dlxu 创建新文件  
 *           Copyright 2004 东南大学 All Rights Reserved
 * ====================================================================
 */
package cn.edu.seu.album.web;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

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

import org.apache.log4j.Category;
import org.apache.log4j.Logger;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessages;

import cn.edu.seu.album.common.PJAction;
import cn.edu.seu.album.common.PJActionForm;
import cn.edu.seu.album.common.PJBizBroker;
import cn.edu.seu.album.common.PJConst;
import cn.edu.seu.album.common.PJException;
import cn.edu.seu.album.model.PictureListBean;
import cn.edu.seu.album.model.SearchCondition;
import cn.edu.seu.album.model.SearchRslt;
import cn.edu.seu.album.pojo.Photo;

/**
 * <p> [概 要] </p>
 * <p> [详 细] </p>
 * <p> [备 考] 无。</p>
 *
 * @author dlxu
 * @version 1.0 2005-1-30
 * @since 1.0
 */
public final class SearchAction extends PJAction {

    /**
     * 日志定义。
     */
    private static final Category log = Logger.getInstance(SearchAction.class);

    /**
     * 日期格式。
     */
    private static final DateFormat DF = new SimpleDateFormat("yyyy年MM月dd日HH时mm分ss秒");

    /**
     * <p> [概 要] </p>
     * <p> [详 细] </p>
     * <p> [备 考] 无。</p>
     * @param mapping
     * @param aForm
     * @param request
     * @param response
     * @param errs
     * @return
     * @throws PJException
     * @see cn.edu.seu.album.common.PJAction#doAction(org.apache.struts.action.ActionMapping, cn.edu.seu.album.common.PJActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, org.apache.struts.action.ActionMessages)
     */
    protected ActionForward doAction(ActionMapping mapping, PJActionForm aForm,
            HttpServletRequest request, HttpServletResponse response,
            ActionMessages errs) throws PJException {
        log.debug("doAction开始");
        ActionForward af = mapping.getInputForward();

        log.debug(aForm);

        String actionType = aForm.getActionType();

        SearchForm form = (SearchForm) aForm;

        if (ACTION_INIT.equals(actionType)) {
            doInit(form);
        } else if (ACTION_SEARCH.equals(actionType)) {
            doSearch(form, request, response, errs);
        }

        log.debug("doAction结束");
        return af;
    }

    /**
     * <p> [概 要] </p>
     * <p> [详 细] </p>
     * <p> [备 考] 无。</p>
     * @param form
     * @param request
     * @param response
     * @param errs
     */
    private void doSearch(SearchForm form, HttpServletRequest request,
            HttpServletResponse response, ActionMessages errs)
            throws PJException {
        log.debug("doSearch开始");

        SearchCondition cond = new SearchCondition();

        String fromYear = form.getFromYear();
        String fromMonth = form.getFromMonth();
        String fromDay = form.getFromDay();
        String toYear = form.getToYear();
        String toMonth = form.getToMonth();
        String toDay = form.getToDay();
        String owner = form.getOwner();
        String sortField = form.getSortField();
        String sortOrder = form.getSortOrder();

        cond.setFromYear(fromYear);
        cond.setFromMonth(fromMonth);
        cond.setFromDay(fromDay);
        cond.setToYear(toYear);
        cond.setToMonth(toMonth);
        cond.setToDay(toDay);
        cond.setOwner(owner);
        cond.setSortField(sortField);
        cond.setSortOrder(sortOrder);

        SearchRslt rslt = (SearchRslt) PJBizBroker.invoke("SearchBiz", cond,
                errs, request);
        if (rslt.isCheckOk()) {
            List searchList = rslt.getPictureList();
            List newList = new ArrayList();
            PictureListBean picListBean = null;
            for (Iterator iter = searchList.iterator(); iter.hasNext();) {
                Photo photo = (Photo) iter.next();
                picListBean = new PictureListBean();
                picListBean.setPhoto(photo);

                picListBean.setPictureId(photo.getId());
                picListBean.setPictureName(photo.getName());
                picListBean.setPicturePriv(photo.getPriv());
                picListBean.setPicturePrivName(PJConst.getAttribute(photo
                        .getPriv()));
                picListBean.setLastModifyTime(DF.format(photo
                        .getLastUpdateDate()));

                newList.add(picListBean);
            }

            form.setRslt(rslt);
            form.setPicList(newList);
            form.setCanList(rslt.isCheckOk());
        } else {
            form.setPicList(new ArrayList());
            form.setCanList(false);
        }

        log.debug("doSearch结束");

    }

    /**
     * <p> [概 要] </p>
     * <p> [详 细] </p>
     * <p> [备 考] 无。</p>
     * @param form
     */
    private void doInit(SearchForm form) throws PJException {
        log.debug("doInit开始");

        //        Calendar cale = Calendar.getInstance();
        //        int year = cale.get(Calendar.YEAR);
        //        int month = cale.get(Calendar.MONTH);
        //        int day = cale.get(Calendar.DATE);
        //
        //        form.setToYear(String.valueOf(year));
        //        form.setToMonth(String.valueOf(month));
        //        form.setToDay(String.valueOf(day));
        String userName = form.getSessionBean().getPerson().getName();
        form.setCanList(false);
        form.setPicList(new ArrayList());
        form.setOwner(userName);
        log.debug("doInit结束");
    }

}