visitoraction.java

有简单的网上书店需求及设计流程

package org.wiely.action;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts2.ServletActionContext;
import org.wiely.commons.Pager;
import org.wiely.service.VisitorService;
import org.wiely.vo.Visitor;

import com.opensymphony.xwork2.ActionSupport;

/**
 * the action visitor extends ActionSupport it provides visitors for user and
 * save the record from user
 * 
 * @param title
 * @param detail
 * @param visitorname
 * @param visitorService
 */
@SuppressWarnings("serial")
public class VisitorAction extends ActionSupport {

	// fields
	protected VisitorService visitorService;
	protected Pager pager;
	String title;
	String detail;
	String visitorname;
	int currentPage = 1;

	public VisitorService getVisitorService() {
		return visitorService;
	}

	public String getTitle() {
		return title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public String getDetail() {
		return detail;
	}

	public void setDetail(String detail) {
		this.detail = detail;
	}

	public String getVisitorname() {
		return visitorname;
	}

	public void setVisitorname(String visitorname) {
		this.visitorname = visitorname;
	}

	public void setVisitorService(VisitorService visitorService) {
		this.visitorService = visitorService;
	}

	public int getCurrentPage() {
		return currentPage;
	}

	public void setCurrentPage(int currentPage) {
		this.currentPage = currentPage;
	}

	/**
	 * validate the save() method the two field "title" and "visitorname"
	 */
	public void validateSave() {
		System.out.println("validate save()~~~~~~~~~");
		if (title == null) {
			addFieldError("title", getText("errors.visitor.title"));
		}
		if (visitorname == null || visitorname.equalsIgnoreCase("")) {
			addFieldError("visitorname", getText("errors.visitor.visitorname"));
		}

	}

	/**
	 * @return String
	 * @throws Exception
	 * @see show() all visitors invoke getVisitors() method and save in request
	 *      to redirect to user
	 */
	@SuppressWarnings("unchecked")
	public String show() throws Exception {
		List list = new ArrayList();
		int totalSize = visitorService.getTotalRecords();
		pager = new Pager(currentPage, totalSize);
		list = visitorService.getVisitors(currentPage, pager.getPageSize());

		HttpServletRequest request = ServletActionContext.getRequest();
		request.setAttribute("visitors", list);
		request.setAttribute("pager", pager);
		return SUCCESS;
	}

	/**
	 * 
	 * @return String
	 * @throws Exception
	 * @see the save() method save visitor to database
	 */
	public String save() throws Exception {
		Visitor visitor = new Visitor();
		visitor.setDetail(detail);
		visitor.setTitle(title);		
		visitor.setVisitordate(new Date());
		visitor.setVisitorname(visitorname);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");       
        String date =sdf.format(new Date());
        Date date1 =sdf.parse(date);
        visitor.setVisitordate(date1);
		visitorService.insertVisitor(visitor);

		return SUCCESS;

	}

}