面向对象程序设计
一 问题描述
仓库管理系统是现代仓储企业进行货物管理和处理的业务操作系统。它可以实现本地一个或几个仓库的精细化管理，也可实现制造企业、物流企业、连锁业在全国范围内、异地多点仓库的管理；它可以对货物存储和出货等进行动态安排，可以对仓储作业流程的全过程进行电子化操作；可以与客服中心建立数据接口使客户通过互联网实现远程货物管理，可以与企业的ERP系统实现无缝连接。
在现代企业中，仓库管理是一项繁琐复杂的工作，每天要处理大量的单据数据。为及时结清每笔业务，盘点库存和货物流动情况，保证企业生产用料以及货物安全，库管人员要花费大量人力物力和时间来作数据记录统计工作。
众所周知，仓库管理是一种既麻烦又单调的工作，每天都是重复记录一些货物的存入与取出，而且货物的种类繁多，存取有很大的随机性，这样为工作人员带来了很大的不便，在操作过程中，由于人为的计算出错率很高，一旦出错改正也很困难，这样简单繁重的工作要很多人来做，为经营者增加了很多成本。所以开发一个可行的仓库管理系统是十分必要的。
本系统是为物流管理而设计的高效管理系统，系统功能强大，同时操作又比较简单，而管理人员大多受到过系统的培训，并能够操作电脑，所以只要花很少的时间，就能够让他们熟悉本系统。
系统开发的总体任务是实现各种信息的系统化、规范化和自动化。系统功能分析是在系统开发的总体任务的基础上完成。本仓库管理系统需要完成功能主要有：
●仓库管理各种信息的输入，包括货物、供应商、客户、仓库信息的输入等。
●仓库管理各种信息的查询、统计、修改和维护，包括货物、单据查询，货物出入、职员操作统计，各种信息的修改和维护等。
●打印报表的生成。
●在货物管理中加入最高储备和最低储备字段，对仓库中的产品实现监控和报警。
●操作日志的管理。
二 总体设计
三 代码
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.javateam3.struts.form.LoginForm;
import com.javateam3.whmsys.common.dao.LoginService;
/**
* MyEclipse Struts
* Creation date: 05-30-2009
*
* XDoclet definition:
* @struts.action path="/login" name="loginForm" input="/webpage/login.jsp" scope="request" validate="true"
*/
public class LoginAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
LoginForm loginForm = (LoginForm) form;
try{
String userName=loginForm.getUser_name().trim();
String psw=loginForm.getPsw().trim();
LoginService loginService=new LoginService();
HttpSession session = request.getSession(true);
if(loginService.login(userName, psw)){
session.setAttribute("username",userName);
//如果登录成功把登录的名字放在session中以便在过滤器中判断
return mapping.findForward("loginSuccess");
//返回到登陆成功页面
}else{
session.invalidate();
request.setAttribute("loginError", "用户或者密码错误!!");
//返回到错误页面
return mapping.findForward("loginError");
}
}catch(Exception e){
e.printStackTrace();
}
return null;
}
}
登陆过滤器
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.*;
public class SecurityAndDeny implements Filter {
public void destroy() {
//注销时调用
}
public void doFilter(ServletRequest req, ServletResponse resp,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest)req;
HttpServletResponse response=(HttpServletResponse)resp;
HttpSession session = request.getSession(false);
//取出来session如果没有得到空值
if (session== null||session.getAttribute("username")== null) {
//判断是否登录过如果没有就重定向到登陆页面
String temp="你还没登陆请重新登陆！！";
temp=java.net.URLEncoder.encode(temp.toString(),"utf-8")； response.sendRedirect("http://localhost:8080/JT03EtpLgtWebProject03/login.jsp?loginErr="+temp);
return;
}
//如果登录了就进入请求页面
chain.doFilter(req, resp);
}
public void init(FilterConfig arg0) throws ServletException {
//初始化时调用的方法
}
}
登陆DAO
public Boolean login(String userName,String psw)
{
Employee employee=new Employee();
employee.setPsw(psw) ;
employee.setUserName(userName);
List results=findByExample(employee);
int length=results.size();
if(length==1)
{
return true;
}
else
{
return false;
}
}
供货商查询Action
package com.javateam3.whmsys.manager.basicinfo.supplyerinfo.action;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.javateam3.whmsys.common.PageBean;
import com.javateam3.whmsys.manager.basicinfo.supplyerinfo.form.QueryForm;
import com.javateam3.whmsys.manager.basicinfo.supplyerinfo.service.SupplierService;
import com.javateam3.whmsys.common.pojo.Supplier;
import com.javateam3.whmsys.common.utils.Tool;
public class QueryAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
QueryForm queryForm = (QueryForm) form;
SupplierService ss = new SupplierService();
PageBean pageBean = new PageBean();
List list = null;
//存放查出来的spplier对象
String crrPage = request.getParameter("cp");
int currentPage = pageBean.getCurrentPage();
int lineSize = pageBean.getLineSize();
Supplier supplier = change(queryForm);
if (crrPage != null) {
currentPage = Integer.parseInt(crrPage);
} else {
int allRecorders = ss.getCount(supplier);
Tool.setALLRECORDERS(allRecorders);
Tool.setPAGESIZE((allRecorders + lineSize - 1) / lineSize);
pageBean.setAllRecorders(allRecorders);
pageBean.setPageSize((allRecorders + lineSize - 1) / lineSize);
}
list = ss.queryByExample(supplier, currentPage, lineSize);
pageBean.setCurrentPage(currentPage);
request.setAttribute("pageBean", pageBean);
request.setAttribute("list", list);
//把查询出来的supplier对象放在request里
return mapping.findForward("supplierResult");
}
//把form表单里的东西转化为supplier对象
public Supplier change(QueryForm queryForm) {
Supplier supplier = new Supplier();
if (queryForm.getSupplierId() != null
&& !queryForm.getSupplierId().equals(""))
supplier.setSupplierId(queryForm.getSupplierId());
if (queryForm.getAddress() != null
&& !queryForm.getAddress().equals(""))
supplier.setAddress(queryForm.getAddress());
if (queryForm.getName() != null && !queryForm.getName().equals(""))
supplier.setName(queryForm.getName());
if (queryForm.getCredit() != null && !queryForm.getCredit().equals(""))
supplier.setCredit(queryForm.getCredit());
if (queryForm.getPhone() != null && !queryForm.getPhone().equals(""))
supplier.setPhone(queryForm.getPhone());
if (queryForm.getRemark() != null && !queryForm.getRemark().equals(""))
supplier.setRemark(queryForm.getRemark());
return supplier;
}
}
供货商修改Action
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.javateam3.whmsys.common.pojo.Supplier;
import com.javateam3.whmsys.manager.basicinfo.supplyerinfo.form.ModifyForm;
import com.javateam3.whmsys.manager.basicinfo.supplyerinfo.service.SupplierService;
public class ModifyAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
ModifyForm modifyForm = (ModifyForm) form;
Supplier supplier = new Supplier();
supplier.setAddress(modifyForm.getAddress());
supplier.setCredit(modifyForm.getCredit());
supplier.setName(modifyForm.getName());
supplier.setPhone(modifyForm.getPhone());
supplier.setRemark(modifyForm.getRemark());
supplier.setSupplierId(modifyForm.getSupplierId());
SupplierService ss = new SupplierService();
try {
ss.upDate(supplier);
return mapping.findForward("success");
} catch (Exception e) {
e.printStackTrace();
return mapping.findForward("error");
}
}
}供货商添加Action
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.javateam3.whmsys.common.pojo.Supplier;
import com.javateam3.whmsys.manager.basicinfo.supplyerinfo.form.AddForm;
import com.javateam3.whmsys.manager.basicinfo.supplyerinfo.service.SupplierService;
public class AddAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
AddForm addForm = (AddForm) form;
Supplier supplier = new Supplier();
supplier.setAddress(addForm.getAddress());
supplier.setCredit(addForm.getCredit());
supplier.setName(addForm.getName());
supplier.setPhone(addForm.getPhone());
supplier.setRemark(addForm.getRemark());
supplier.setSupplierId(addForm.getSupplierId());
SupplierService ss = new SupplierService();
try {
ss.insert(supplier);
return mapping.findForward("success");
} catch (Exception e) {
e.printStackTrace();
//出现异常打印轨迹
return mapping.findForward("error");
}
}
}
供货商DAO
package com.javateam3.whmsys.manager.basicinfo.supplyerinfo.dao;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Example;
import com.javateam3.whmsys.common.dao.BaseHibernateDAO;
import com.javateam3.whmsys.common.pojo.Supplier;
import com.javateam3.whmsys.common.utils.UtilGetExample;
public class SupplierDAO extends BaseHibernateDAO {
public static final String NAME = "name";
public static final String ADDRESS = "address";
public static final String PHONE = "phone";
public static final String CREDIT = "credit";
public static final String REMARK = "remark";
public static final String SUPPLIERID="supplierId";
public void save(Supplier transientInstance) {
Transaction transaction=null;
try {
Session session= getSession();
transaction=session.beginTransaction();
session.save(transientInstance);
transaction.commit();
session.close();
} catch (Exception re) {
}
}
public void upDate(Supplier transientInstance)throws Exception {
try {
Session session= getSession();
Transaction transaction = session.beginTransaction();
session.update(transientInstance);
transaction.commit();
session.close();
} catch (RuntimeException re) {
throw re;
}
}
public Supplier findById(java.lang.String id) {
try {
Session session= getSession();
Transaction transaction = session.beginTransaction();
Supplier instance = (Supplier) session.get(
"com.javateam3.whmsys.common.pojo.Supplier", id);
session.close();
return instance;
} catch (RuntimeException re) {
throw re;
}
}
public int getCount(Supplier instance) throws Exception {
if(instance.getSupplierId()!=null)
{
Supplier supplier=findById(instance.getSupplierId());
if(supplier!=null)
{
return 1;
}
else{
return 0;
}
}
else{
Session session= getSession();
Transaction transaction = session.beginTransaction();
Criteria c = session.createCriteria(
"com.javateam3.whmsys.common.pojo.Supplier").add(
Example.create(instance));
int i=c.list().size();
transaction.commit();
session.close();
return i;}
}
public List findByExample(Supplier instance, int currentPage, int lineSize)
throws Exception {
List list = null;
Session session=getSession();
if(findByProperty(SUPPLIERID, instance.getSupplierId()).size()==0||findByProperty("supplierId", instance.getSupplierId())==null)
{
Example es=UtilGetExample.getExample(instance);
Transaction transaction = session.beginTransaction();
Criteria c = session.createCriteria(
"com.javateam3.whmsys.common.pojo.Supplier")
.add(es);
c.setFirstResult((currentPage - 1) * lineSize);
c.setMaxResults(lineSize);
list = c.list();
transaction.commit();
getSession().close();
if(list.size()==0||list==null)
{
return null;
}
return list;
}
else
{
return findByProperty("supplierId", instance.getSupplierId());
}
}
四 运行截图
