发一个struts2+hibernate3实现的简单购物车程序

2008-07-14 22:10:32

为了和学习javaEE技术的朋友们一起交流，一起分享学习，我刚刚写了一个用struts2+hibernate3实现的简单购物车程序，觉得还可以，所以传上来供大家交流交流，此程序还在完善中

如下：
我用的数据库是mysql数据库
register.sql

create table user
(
uid varchar(32) not null primary key,
username varchar(40) unique,
password varchar(40) ,
age int
);
create table product
(
pid varchar(32) ,
productname varchar(40),
productcount int ,
allprice int,
uid varchar(32),
foreign key (uid) references user(uid) on delete cascade
);

hibernate.cfg.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">


<hibernate-configuration>

<session-factory>
   <property name="connection.username">root</property>
   <property name="connection.url">
       jdbc:mysql://localhost:3306/netshop
   </property>
   <property name="dialect">
       org.hibernate.dialect.MySQLDialect
   </property>
   <property name="myeclipse.connection.profile">
       org.gjt.mm.mysql.Driver
   </property>
   <property name="connection.password">1234</property>
   <property name="connection.driver_class">
       org.gjt.mm.mysql.Driver
   </property>
   <property name="show_sql">true</property>
   <mapping resource="figo/register/dao/User.hbm.xml" />
   <mapping resource="figo/register/dao/Product.hbm.xml" />

</session-factory>

</hibernate-configuration>

struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
   <struts>


        <package name="struts2" extends="struts-default">
            <action name="register" class="figo.action.RegisterAction">
                <result name="input">/register.jsp</result>
                <result name="success">/registerSuccess.jsp</result>
            </action>

            <action name="login" class="figo.action.LoginAction">
                <result name="input">/login.jsp</result>
                <result name="success">/loginSuccess.jsp</result>
            </action>

            <action name="shop" class="figo.action.ShopAction">
                <result name="success">/shopSuccess.jsp</result>
            </action>
        </package>
   </struts>

在package figo包下
LoginAction.java

package figo.action;

import com.opensymphony.xwork2.ActionSupport;

import figo.register.dao.User;
import figo.register.dao.UserOperation;

public class LoginAction extends ActionSupport {

   private String username;

   private String password;

   public String getUsername() {
       return username;
   }

   public void setUsername(String username) {
       this.username = username;
   }

   public String getPassword() {
       return password;
   }

   public void setPassword(String password) {
       this.password = password;
   }

   @Override
   public String execute() throws Exception {
       String result=check();

       return result;
   }

   @Override
   public void validate() {
       if(this.username.length()>12 ||this.username.length()<5)
       {
           this.addFieldError("username", "用户名长度必须为5到12之间");

       }
       if(this.password.length()>12 ||this.username.length()<5)
       {
           this.addFieldError("password", "密码长度必须在5到12之间");
       }
   }
   public String check()
   {
       UserOperation op = new UserOperation();
       User user = op.QueryByUsername(username);
       if(user == null)
       {
           this.addFieldError("username", "用户名不存在");
           return "input";
       }
       String usernameDao = user.getUsername();

       String passwordDao = user.getPassword();
       if(!(passwordDao.equals(this.password)))
       {
           this.addFieldError("password", "密码错误");
           return this.INPUT;

       }
       return this.SUCCESS;

   }
}

RegisterAction.java

package figo.action;

import java.util.HashSet;

import com.opensymphony.xwork2.ActionSupport;

import figo.register.dao.Product;
import figo.register.dao.User;
import figo.register.dao.UserOperation;

public class RegisterAction extends ActionSupport {



   private String username;

   private String password;

   private String repassword;

   private int age;

   public String getUsername() {
       return username;
   }

   public void setUsername(String username) {
       this.username = username;
   }

   public String getPassword() {
       return password;
   }

   public void setPassword(String password) {
       this.password = password;
   }

   public String getRepassword() {
       return repassword;
   }

   public void setRepassword(String repassword) {
       this.repassword = repassword;
   }

   public int getAge() {
       return age;
   }

   public void setAge(int age) {
       this.age = age;
   }

   @Override
   public String execute() throws Exception {
       // TODO Auto-generated method stub

       Persistence();
       return this.SUCCESS;
   }

   @Override
   public void validate() {
       if(!(this.password.equals(this.repassword)))
       {
           this.addFieldError("password", "两次密码必须匹配");
       }
   }
   public void Persistence()
   {
       User user = new User();
       UserOperation op = new UserOperation();
       user.setAge(age);
       user.setPassword(password);
       user.setUsername(username);

       Product product = null;
       user.setProduct(new HashSet());

       product.setUser(user);
       user.getProduct().add(product);
       op.save(user);
   }




}

ShopAction.java

package figo.action;

import java.util.Iterator;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

import figo.register.dao.Product;
import figo.register.dao.User;
import figo.register.dao.UserOperation;
public class ShopAction extends ActionSupport{

   private String productname;

   private int productcount;

   private int allprice;



   public String pid;
   public String getProductname() {
       return productname;
   }

   public void setProductname(String productname) {
       this.productname = productname;
   }

   public int getProductcount() {
       return productcount;
   }

   public void setProductcount(int productcount) {
       this.productcount = productcount;
   }

   public int getAllprice() {
       return allprice;
   }

   public void setAllprice(int allprice) {
       this.allprice = allprice;
   }

   public String getPid() {
       return pid;
   }

   public void setPid(String pid) {
       this.pid = pid;
   }



   @Override
   public String execute() throws Exception {
       // TODO Auto-generated method stub


       Persitence();
       return this.SUCCESS;
   }
   public void Persitence()
   {
       //获得session对象和
       HttpServletRequest request = (HttpServletRequest)ActionContext.getContext().get(org.apache.struts2.StrutsStatics.HTTP_REQUEST);
       HttpSession session = request.getSession();
       String username = (String)session.getAttribute("username");


       UserOperation op = new UserOperation();
       User user = new User();
       user = op.QueryByUsername(username);

           Iterator it = user.getProduct().iterator();

           while(it.hasNext())
           {
               Product p =(Product)it.next();
               System.out.println("______--___");
               System.out.println(this.pid);
               System.out.println(p.getPid());
               System.out.println(p.getPid().equals( this.pid));
               if(p.getPid().equals( this.pid))
               {
                   System.out.println(p.getPid());
                   System.out.println(this.pid);
                   System.out.println(p.getPid()==this.pid);
                   System.out.println("。。。。。。。。。。。");
                   p.setAllprice(p.getAllprice()+allprice);
                   p.setProductcount(p.getProductcount()+1);
                   p.setPid(pid);
                   p.setUser(user);
                   op.update(p);
                   return;
               }


       }


       Product product = new Product();
       product.setAllprice(allprice);
       product.setProductname(productname);
       product.setProductcount(productcount);
       product.setUser(user);
       product.setPid(pid);
       System.out.println("!!!!!!!!!");
       op.save(product);






   }





}

RegisterAction.properties

invalid.fieldvalue.age=Age Conversion Error!

RegisterAction-validation.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0//EN" "http://www.opensymphony.com/xwork/xwork-validator-1.0.dtd">
   <validators>
       <field name="username">
           <field-validator type="requiredstring">
               <param name="trim">true</param>
               <message>用户名不能为空</message>
           </field-validator>
           <field-validator type="stringlength">
               <param name="maxLength">10</param>
               <param name="minLength">5</param>
               <message>用户名长度必须在5到10之间</message>
           </field-validator>
       </field>

       <field name="password">
           <field-validator type="requiredstring">
               <message>密码不能为空!</message>
           </field-validator>

           <field-validator type="stringlength">
               <param name="maxLength">10</param>
               <param name="minLength">5</param>
               <message>密码长度必须在5到10之间</message>
           </field-validator>
       </field>

      <field name="repassword">
           <field-validator type="requiredstring">
               <message>再次密码不能为空</message>
           </field-validator>

           <field-validator type="stringlength">
               <param name="minLength">5</param>
               <param name="maxLength">10</param>
               <message>密码长度必须在5到10之间</message>
           </field-validator>
       </field>

       <field name="age">
           <field-validator type="int">
                <param name="min">1</param>
               <param name="max">150</param>
               <message>年龄必须在1到150之间</message>
           </field-validator>
       </field>
   </validators>

figo.action包就这些内容

下面进入另外一个包中
figo.register.dao
这个包是用hibernate3处理后台
User.java

package figo.register.dao;

import java.util.Set;

public class User {

   private String uid;

   private String username;

   private String password;

   private int age;

   private Set product;

   public Set getProduct() {
       return product;
   }

   public void setProduct(Set product) {
       this.product = product;
   }

   public String getUid() {
       return uid;
   }

   public void setUid(String uid) {
       this.uid = uid;
   }

   public String getUsername() {
       return username;
   }

   public void setUsername(String username) {
       this.username = username;
   }

   public String getPassword() {
       return password;
   }

   public void setPassword(String password) {
       this.password = password;
   }

   public int getAge() {
       return age;
   }

   public void setAge(int age) {
       this.age = age;
   }

}

User.hbm.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="figo.register.dao.User" table="user" catalog="netshop">
        <id name="uid" type="java.lang.String">
            <column name="uid" length="32" />
            <generator class="uuid.hex"></generator>
        </id>
        <property name="username" type="java.lang.String">
            <column name="username" length="40" unique="true" />
        </property>
        <property name="password" type="java.lang.String">
            <column name="password" length="40" />
        </property>
        <property name="age" type="java.lang.Integer">
            <column name="age" />
        </property>
        <set name="product" table="product" inverse="true" cascade="all">
           <key>
               <column name="uid" length="32" />
           </key>
           <one-to-many class="figo.register.dao.Product" />
        </set>
    </class>
</hibernate-mapping>

Product.java

package figo.register.dao;

public class Product {

   private String pid;

   private String productname;

   private int productcount;

   private int allprice;

   private User user;

   public User getUser() {
       return user;
   }

   public void setUser(User user) {
       this.user = user;
   }

   public String getPid() {
       return pid;
   }

   public void setPid(String pid) {
       this.pid = pid;
   }

   public String getProductname() {
       return productname;
   }

   public void setProductname(String productname) {
       this.productname = productname;
   }

   public int getProductcount() {
       return productcount;
   }

   public void setProductcount(int productcount) {
       this.productcount = productcount;
   }

   public int getAllprice() {
       return allprice;
   }

   public void setAllprice(int allprice) {
       this.allprice = allprice;
   }


}

Product.hbm.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="figo.register.dao.Product" table="product" catalog="netshop">
       <id name="pid" type="java.lang.String">
            <column name="pid" length="32" />
            <generator class="assigned"></generator>
        </id>
        <property name="productname" type="java.lang.String">
            <column name="productname" />
        </property>
        <property name="productcount" type="java.lang.Integer">
            <column name="productcount" />
        </property>
        <property name="allprice" type="java.lang.Integer">
            <column name="allprice" />
        </property>
        <many-to-one name="user" class="figo.register.dao.User">
            <column name="uid" length="32" />
        </many-to-one>
    </class>
</hibernate-mapping>

UserOperation.java

package figo.register.dao;

import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.cfg.Configuration;

public class UserOperation {

    private Session session;

    public UserOperation()
    {
        this.session= new Configuration().configure().buildSessionFactory().openSession();
    }
    public void save(User user)
    {
        this.session.save(user);
        this.session.beginTransaction().commit();
    }
    public void save(Product p)
    {
        this.session.save(p);
        this.session.beginTransaction().commit();
    }
    public User QueryByUsername(String username)
    {
        String hql="from User as u where u.username=?";
        Query q = session.createQuery(hql);
        q.setString(0, username);
        List l=q.list();
        User user = null;
        if(l.size()>0)
        {
            user =(User)l.get(0);
        }
        return user;
    }
    public void update(User user)
    {
        this.session.update(user);
        this.session.beginTransaction().commit();
    }
    public void update(Product p)
    {
        this.session.update(p);
        this.session.beginTransaction().commit();
    }
}

下面就是前台展示层的内容，在web-Root下
建立jsp文件
index.jsp

loginSuccess.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <base href="<%=basePath%>">

    <title>My JSP 'loginSuccess.jsp' starting page</title>

   <meta http-equiv="pragma" content="no-cache">
   <meta http-equiv="cache-control" content="no-cache">
   <meta http-equiv="expires" content="0">
   <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
   <meta http-equiv="description" content="This is my page">
   

</head>

<body>
    登陆成功     <br>
    您登陆的用户名为：
    <s:property value="username"/><br>
    <%
    String username=request.getParameter("username");

    session.setAttribute("username",username);
     %>
   <h1> <%out.println(session.getAttribute("username")); %></h1>

    <a href="shop.jsp">去商店购物</a>
</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <base href="<%=basePath%>">

    <title>My JSP 'register.jsp' starting page</title>

   <meta http-equiv="pragma" content="no-cache">
   <meta http-equiv="cache-control" content="no-cache">
   <meta http-equiv="expires" content="0">
   <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
   <meta http-equiv="description" content="This is my page">
   

</head>

<body>
    <s:fielderror ></s:fielderror>

    <s:form action="register.action">
       <s:textfield name="username" label="名字"></s:textfield>
       <s:password name="password" label="密码"></s:password>
       <s:password name="repassword" label="在输入一次密码"></s:password>
       <s:textfield name="age" label="年龄" ></s:textfield>
       <s:submit value="submit"></s:submit>
    </s:form>
</body>
</html>

registerSuccess.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
    <base href="<%=basePath%>">

    <title>My JSP 'registerSuccess.jsp' starting page</title>

   <meta http-equiv="pragma" content="no-cache">
   <meta http-equiv="cache-control" content="no-cache">
   <meta http-equiv="expires" content="0">
   <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
   <meta http-equiv="description" content="This is my page">
   

</head>

<body>
    注册成功
    注册基本信息：
    用户名：<s:property value="username"/><br>
    密码：<s:property value="password"/><br>
    年龄：<s:property value="age"/><br>
</body>
</html>

shop.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
    <base href="<%=basePath%>">

    <title>My JSP 'shop.jsp' starting page</title>

   <meta http-equiv="pragma" content="no-cache">
   <meta http-equiv="cache-control" content="no-cache">
   <meta http-equiv="expires" content="0">
   <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
   <meta http-equiv="description" content="This is my page">
   

</head>

<body>
<h1><%out.println(session.getAttribute("username")) ;%></h1>
    <table align="center" cols="4">

    <tr>
       <td>
       商品名
       </td>
       <td>
       商品描述
       </td>
       <td>
       价格
       </td>
       <td>
       </td>

    </tr>
    <tr>
       <td id="pen">
           钢笔
       </td>
       <td >
           最好的钢笔
       </td>
       <td>
       $20
       </td>
       <td>
       <a href="shop.action?productname=pen&productcount=1&allprice=20&pid=1">购买一支</a>
       </td>
    </tr>
    <tr>
    <td id="ballpen">
    圆珠笔
    </td>
    <td>
    最好的圆珠笔
    </td>
    <td>
    $25
    </td>
    <td>
    <a href="shop.action?productname=ballpen&productcount=1&allprice=25&pid=2">购买一支</a>
    </td>
    </tr>







    </table>
</body>
</html>

shopSuccess.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <base href="<%=basePath%>">

    <title>My JSP 'shopSuccess.jsp' starting page</title>

   <meta http-equiv="pragma" content="no-cache">
   <meta http-equiv="cache-control" content="no-cache">
   <meta http-equiv="expires" content="0">
   <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
   <meta http-equiv="description" content="This is my page">
   

</head>

<body>
    购买成功 <br>
    <a href="shop.jsp">返回继续购买</a>
</body>
</html>

完了，谢谢观赏
我觉得有一个地方的效率不高，我们交流交流

本文出自 “Java_EE_开发” 博客，请务必保留此出处http://figoforjava.blog.51cto.com/365397/87728

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