使用MongoDB和JSP實(shí)現(xiàn)一個(gè)簡(jiǎn)單的購(gòu)物車(chē)系統(tǒng)實(shí)例

/* 7 createdAt:2016/11/22 下午3:52:51*/
{
  "_id" : ObjectId("5833f953e9d60125601a8c8b"),
  "sid" : "7",
  "sname" : "紅米Note4",
  "sprice" : "899"
},

/* 8 createdAt:2016/11/22 下午3:53:19*/
{
  "_id" : ObjectId("5833f96fe9d60125601a8c8c"),
  "sid" : "8",
  "sname" : "平凡的世界",
  "sprice" : "99"
},

/* 9 createdAt:2016/11/22 下午3:53:43*/
{
  "_id" : ObjectId("5833f987e9d60125601a8c8d"),
  "sid" : "9",
  "sname" : "斗羅大陸",
  "sprice" : "199"
},

%@ page language="java" import="java.util.*,com.mongodb.*" 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 'login_action.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">
  !--
  link rel="stylesheet" type="text/css" href="styles.css">
  -->

 /head>
 
 body>
  %
     response.setContentType("text/html;charset=utf-8"); //確保顯示的漢字信息以正確編碼方式顯示
     request.setCharacterEncoding("utf-8");      //確保獲取的漢字信息以正確編碼方法獲取
     String userName=(String)request.getParameter("username"); //獲取登錄頁(yè)面用戶名
     String passWord=(String)request.getParameter("password");//獲取登陸頁(yè)面密碼
     String checkBox = request.getParameter("save_password");//獲取登陸頁(yè)面記住密碼選擇框?qū)傩灾?
     boolean login_test = false;        //設(shè)定登陸布爾值，若用戶名和密碼成功匹配，則為true
     try{  
       // 連接到 mongodb 服務(wù)
       MongoClient mongoClient = new MongoClient( "localhost" , 27017 );
       //此處采用無(wú)用戶名和密碼驗(yàn)證方式登陸
       @SuppressWarnings("deprecation")
      DB db = mongoClient.getDB( "library" ); //連接到數(shù)據(jù)庫(kù)library
      DBCollection coll = db.getCollection("userInfo"); //獲取library數(shù)據(jù)庫(kù)中集合userInfo
      System.out.println("Collection userInfo selected successfully");
      DBCursor cursor = coll.find(); //查詢集合userInfo中文檔信息
      
      int i=1; 
      while (cursor.hasNext()) {   //檢索集合userInfo中所有文檔信息
        System.out.println("userInfo Document: "+i); 
        DBObject show = cursor.next();       
        System.out.println(show); 
        @SuppressWarnings("rawtypes")
        Map show1 = show.toMap(); //將檢索結(jié)果show(Bson類型)轉(zhuǎn)換為Map類型
        String toname = (String)show1.get("username"); //提取Map中字段名為username的屬性值
        String topassword = (String)show1.get("password"); //提取Map中字段名為password的屬性值
        if(toname.equals(userName)  topassword.equals(passWord)){ 
        //將從數(shù)據(jù)庫(kù)中獲取的用戶名和密碼與表單中獲取的數(shù)據(jù)進(jìn)行驗(yàn)證，匹配成功則使login_test值為true
          System.out.println("登陸成功?。。。。?+"username:"+toname+" password:"+topassword);
          //request.getRequestDispatcher("welcome.jsp").forward(request, response); 
          login_test = true;
        }
         System.out.println(show1.get("username"));
        i++;
      }
      
     }catch(Exception e){
       System.err.println( e.getClass().getName() + ": " + e.getMessage() );
     }
  
    if(login_test) {
      if ("save".equals(checkBox)) {
        //Cookie存取時(shí)用URLEncoder.encode進(jìn)行編碼(PS:讀取時(shí)URLDecoder.decode進(jìn)行解碼)
        String name1 = java.net.URLEncoder.encode(userName,"UTF-8");
        //創(chuàng)建兩個(gè)Cookie對(duì)象
        Cookie nameCookie = new Cookie("username", name1);
        //設(shè)置Cookie的有效期為3天
        nameCookie.setMaxAge(60 * 60 * 24 * 3);
        
        String pwd = java.net.URLEncoder.encode(passWord,"UTF-8");
        Cookie pwdCookie = new Cookie("password", pwd);
        pwdCookie.setMaxAge(60 * 60 * 24 * 3);
        response.addCookie(nameCookie);
        response.addCookie(pwdCookie);
       }
      // request.getRequestDispatcher("welcome.jsp").forward(request, response); 
       response.sendRedirect("welcome.jsp");     
    }  
    else{
       response.sendRedirect("login_Fail.jsp");   
       // request.getRequestDispatcher("loginFail.jsp").forward(request, response);       
    }
   %>
 /body>
/html>

 if(login_test) {
      if ("save".equals(checkBox)) {
        //Cookie存取時(shí)用URLEncoder.encode進(jìn)行編碼(PS:讀取時(shí)URLDecoder.decode進(jìn)行解碼)
        String name1 = java.net.URLEncoder.encode(userName,"UTF-8");
        //創(chuàng)建兩個(gè)Cookie對(duì)象
        Cookie nameCookie = new Cookie("username", name1);
        //設(shè)置Cookie的有效期為3天
        nameCookie.setMaxAge(60 * 60 * 24 * 3);
        
        String pwd = java.net.URLEncoder.encode(passWord,"UTF-8");
        Cookie pwdCookie = new Cookie("password", pwd);
        pwdCookie.setMaxAge(60 * 60 * 24 * 3);
        response.addCookie(nameCookie);
        response.addCookie(pwdCookie);
       }
      // request.getRequestDispatcher("welcome.jsp").forward(request, response); 
       response.sendRedirect("welcome.jsp");     
    }  
    else{
       response.sendRedirect("login_Fail.jsp");   
       // request.getRequestDispatcher("loginFail.jsp").forward(request, response);       
    }

 

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

String username = "";
String password = "";
//獲取當(dāng)前站點(diǎn)的所有Cookie
 Cookie[] cookies = request.getCookies();

 for (int i = 0; i  cookies.length; i++) {
     //對(duì)cookies中的數(shù)據(jù)進(jìn)行遍歷，找到用戶名、密碼的數(shù)據(jù)
     if ("username".equals(cookies[i].getName())) {
     //讀取時(shí)URLDecoder.decode進(jìn)行解碼(PS:Cookie存取時(shí)用URLEncoder.encode進(jìn)行編碼)
       username = java.net.URLDecoder.decode(cookies[i].getValue(),"UTF-8");
     } else if ("password".equals(cookies[i].getName())) {
       password = java.net.URLDecoder.decode(cookies[i].getValue(),"UTF-8");
     }
 }
%>

!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
html>
 head>
  base href="%=basePath%>">
  
  title>登陸頁(yè)面/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="content-type" content="text/html; charset=UTF-8">
  meta http-equiv="description" content="This is my page">
  
  link rel="stylesheet" type="text/css" href="css/login.css">
  

 /head>
 
 body>
  div class="content">
    div class="head">
      h1>簡(jiǎn)單購(gòu)物車(chē)/h1>
    /div>

    !-- 登錄面板  -->
    div class="panel">
     form action="login_action.jsp" method="post"> 
      
      !-- 賬號(hào)和密碼組  -->
      div class="group">
        label>賬號(hào)/label>
        input type="text" placeholder="請(qǐng)輸入賬號(hào)" name="username" value="%=username%>">
      /div>
      div class="group">
        label>密碼/label>
        input type="password" placeholder="請(qǐng)輸入密碼" name="password" value="%=password%>">
      /div>
      div>
       input type="checkbox" value="save" name="save_password"> 
       label>記住密碼/label> 
      /div>
      div class="group">
      label>/label>
      /div>
      !-- 登錄按鈕  -->
      div class="login">
        button type="submit" name="login">登陸/button>
        button type="reset" name="reset">重置/button>
      /div>
      /form>
    /div>
 
    !-- 注冊(cè)按鈕  -->
    div class="register">
      button onclick="window.location.href='register.jsp'">創(chuàng)建新賬號(hào)/button>
    /div>

  /div>
 /body>
/html>

@CHARSET "UTF-8";


/*按照樣圖要求，添加一個(gè)淺灰色背景*/
body{
  background-color: #F2F2F2;
}

/*設(shè)置內(nèi)容模塊距離頂部一個(gè)有一段距離100px*/
.content {
  margin-top: 80px;
}


/*登錄和注冊(cè)按鈕的整體樣式*/
.content button {
  height: 30px;/*登錄和注冊(cè)按鈕的高度*/
  color: white;/*登錄和注冊(cè)按鈕字體顏色為白色*/
  font-size: 18px;/*登錄和注冊(cè)按鈕的字體大小*/
  border: 0px;/*無(wú)邊框*/
  padding: 0px;/*無(wú)內(nèi)邊距*/
  cursor: pointer;/*登錄和注冊(cè)按鈕的選擇時(shí)為手形狀*/
}

/*頭部名稱*/
.content .head {
   text-align: center;/*子內(nèi)容居中*/
}


/*登錄面板*/
.content .panel {
  background-color: white;/*登錄面板背景顏色為白色*/
  width: 302px;/*寬度為302px*/
  text-align: center;/*子內(nèi)容居中*/
  margin: 0px auto;/*自身居中*/
  padding-top: 10px;/*頂部的內(nèi)邊距為20px*/
  padding-bottom: 10px;/*底部的內(nèi)邊距為20px*/
  border: 1px solid #ddd;/*邊框顏色為灰色*/
  border-radius: 5px;/*邊框邊角有5px的弧度*/

}


/*購(gòu)物主頁(yè)購(gòu)物面板*/
.content .panel1 {
  background-color: white;/*購(gòu)物主頁(yè)面板背景顏色為白色*/
  width: 1000px;/*寬度為600px*/
  text-align: center;/*子內(nèi)容居中*/
  margin: 0px auto;/*自身居中*/ 
  border: 1px solid #ddd;/*邊框顏色為灰色*/
  border-radius: 5px;/*邊框邊角有5px的弧度*/

}

/*登錄和密碼組*/
.content .panel .group {
  text-align: left;/*子內(nèi)容居中*/
  width: 262px;/*寬度為262px*/
  margin: 0px auto 20px;/*自身居中，并距離底部有20px的間距*/
}
.content .panel .group label {
  line-height: 30px;/*高度為30px*/
  font-size: 18px;/*字體大小為18px*/
}
.content .panel .group input {
  display: block;/*設(shè)置為塊，是為了讓輸入框獨(dú)占一行*/
  width: 250px;/*寬度為250px*/
  height: 30px;/*高度為30px*/
  border: 1px solid #ddd;/*輸入框的邊框*/
  padding: 0px 0px 0px 10px;/*左邊內(nèi)邊距為10px，顯得美觀*/
  font-size: 16px;/*字體大小*/
}
.content .panel .group input:focus{

  border-left: 1px solid #CC865E;/*當(dāng)輸入框成為焦點(diǎn)時(shí)，左邊框顏色編程褐色*/
}
.content .panel .login button {
  background-color: #CC865E;/*按鈕的背景顏色*/
  width: 130px;/*按鈕的寬度*/
}
.content .panel .login button:hover {
  background-color: white;/*按鈕選中后背景顏色為白色*/
  color: #CC865E;/*按鈕選中后字體顏色為褐色*/
  border: 1px solid #CC865E;/*按鈕選中后邊框顏色為褐色*/
}


/*注冊(cè)按鈕*/
.content .register {
  text-align: center;/*子內(nèi)容居中*/
  margin-top: 20px;/*頂部的內(nèi)邊距為20px*/
}
.content .register button {
  background-color: #466BAF;/*按鈕的背景顏色為藍(lán)色*/
  width: 180px;/*按鈕的寬度*/
}

.content .register button:hover {
  background-color: white;/*按鈕選中后背景顏色為白色*/
  color: #466BAF;/*按鈕選中后字體顏色為藍(lán)色*/
  border: 1px solid #466BAF;/*按鈕選中后邊框顏色為藍(lán)色*/
}

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

String username = "";
String password = "";
//獲取當(dāng)前站點(diǎn)的所有Cookie
 Cookie[] cookies = request.getCookies();

 for (int i = 0; i  cookies.length; i++) {
     //對(duì)cookies中的數(shù)據(jù)進(jìn)行遍歷，找到用戶名、密碼的數(shù)據(jù)
     if ("username".equals(cookies[i].getName())) {
     //讀取時(shí)URLDecoder.decode進(jìn)行解碼(PS:Cookie存取時(shí)用URLEncoder.encode進(jìn)行編碼)
       username = java.net.URLDecoder.decode(cookies[i].getValue(),"UTF-8");
     } else if ("password".equals(cookies[i].getName())) {
       password = java.net.URLDecoder.decode(cookies[i].getValue(),"UTF-8");
     }
 }
%>

!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
html>
 head>
  base href="%=basePath%>">
  
  title>登陸頁(yè)面/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="content-type" content="text/html; charset=UTF-8">
  meta http-equiv="description" content="This is my page">
  
  link rel="stylesheet" type="text/css" href="css/login.css">
  

 /head>
 
 body>
  div class="content">
    div class="head">
      h1>簡(jiǎn)單購(gòu)物車(chē)/h1>
    /div>

    !-- 登錄面板  -->
    div class="panel">
     form action="login_action.jsp" method="post"> 
      
      !-- 賬號(hào)和密碼組  -->
      div class="group">
        label>賬號(hào)/label>
        input type="text" placeholder="請(qǐng)輸入賬號(hào)" name="username" value="%=username%>">
      /div>
      div class="group">
        label>密碼/label>
        input type="password" placeholder="請(qǐng)輸入密碼" name="password" value="%=password%>">
      /div>
      div>
       input type="checkbox" value="save" name="save_password"> 
       label>記住密碼/label> 
      /div>
      div class="group">
      label>/label>
      /div>
      !-- 登錄按鈕  -->
      div class="login">
        button type="submit" name="login">登陸/button>
        button type="reset" name="reset">重置/button>
      /div>
      /form>
    /div>
 
    !-- 注冊(cè)按鈕  -->
    div class="register">
      button onclick="window.location.href='register.jsp'">創(chuàng)建新賬號(hào)/button>
    /div>

  /div>
 /body>
/html>

%@ page language="java" import="java.util.*,com.mongodb.*" 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 'login_action.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">
  !--
  link rel="stylesheet" type="text/css" href="styles.css">
  -->

 /head>
 
 body>
  %
     response.setContentType("text/html;charset=utf-8"); //確保顯示的漢字信息以正確編碼方式顯示
     request.setCharacterEncoding("utf-8");      //確保獲取的漢字信息以正確編碼方法獲取
     String userName=(String)request.getParameter("username"); //獲取登錄頁(yè)面用戶名
     String passWord=(String)request.getParameter("password");//獲取登陸頁(yè)面密碼
     String checkBox = request.getParameter("save_password");//獲取登陸頁(yè)面記住密碼選擇框?qū)傩灾?
     boolean login_test = false;        //設(shè)定登陸布爾值，若用戶名和密碼成功匹配，則為true
     try{  
       // 連接到 mongodb 服務(wù)
       MongoClient mongoClient = new MongoClient( "localhost" , 27017 );
       //此處采用無(wú)用戶名和密碼驗(yàn)證方式登陸
       @SuppressWarnings("deprecation")
      DB db = mongoClient.getDB( "library" ); //連接到數(shù)據(jù)庫(kù)library
      DBCollection coll = db.getCollection("userInfo"); //獲取library數(shù)據(jù)庫(kù)中集合userInfo
      System.out.println("Collection userInfo selected successfully");
      DBCursor cursor = coll.find(); //查詢集合userInfo中文檔信息
      
      int i=1; 
      while (cursor.hasNext()) {   //檢索集合userInfo中所有文檔信息
        System.out.println("userInfo Document: "+i); 
        DBObject show = cursor.next();       
        System.out.println(show); 
        @SuppressWarnings("rawtypes")
        Map show1 = show.toMap(); //將檢索結(jié)果show(Bson類型)轉(zhuǎn)換為Map類型
        String toname = (String)show1.get("username"); //提取Map中字段名為username的屬性值
        String topassword = (String)show1.get("password"); //提取Map中字段名為password的屬性值
        if(toname.equals(userName)  topassword.equals(passWord)){ 
        //將從數(shù)據(jù)庫(kù)中獲取的用戶名和密碼與表單中獲取的數(shù)據(jù)進(jìn)行驗(yàn)證，匹配成功則使login_test值為true
          System.out.println("登陸成功?。。。?！"+"username:"+toname+" password:"+topassword);
          //request.getRequestDispatcher("welcome.jsp").forward(request, response); 
          login_test = true;
        }
         System.out.println(show1.get("username"));
        i++;
      }
      
     }catch(Exception e){
       System.err.println( e.getClass().getName() + ": " + e.getMessage() );
     }
  
    if(login_test) {
      if ("save".equals(checkBox)) {
        //Cookie存取時(shí)用URLEncoder.encode進(jìn)行編碼(PS:讀取時(shí)URLDecoder.decode進(jìn)行解碼)
        String name1 = java.net.URLEncoder.encode(userName,"UTF-8");
        //創(chuàng)建兩個(gè)Cookie對(duì)象
        Cookie nameCookie = new Cookie("username", name1);
        //設(shè)置Cookie的有效期為3天
        nameCookie.setMaxAge(60 * 60 * 24 * 3);
        
        String pwd = java.net.URLEncoder.encode(passWord,"UTF-8");
        Cookie pwdCookie = new Cookie("password", pwd);
        pwdCookie.setMaxAge(60 * 60 * 24 * 3);
        response.addCookie(nameCookie);
        response.addCookie(pwdCookie);
       }
      // request.getRequestDispatcher("welcome.jsp").forward(request, response); 
       response.sendRedirect("welcome.jsp");     
    }  
    else{
       response.sendRedirect("login_Fail.jsp");   
       // request.getRequestDispatcher("loginFail.jsp").forward(request, response);       
    }
   %>
 /body>
/html>

 %@ 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>登陸失敗/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">
  link rel="stylesheet" type="text/css" href="css/login.css">

 /head>
 
 body>
  div class="content">
  div class="panel1">
  h1>輸入用戶名和密碼不正確，請(qǐng)重新登陸?。?！/h1>
  
  /div>
   div class="register">
      button onclick="window.location.href='login.jsp'">返回/button> 
      /div>
  /div>
 /body>
/html>

%@ 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>注冊(cè)頁(yè)面/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="content-type" content="text/html; charset=UTF-8">
  meta http-equiv="description" content="This is my page">

  link rel="stylesheet" type="text/css" href="css/login.css">
  Script Language="JavaScript">
      function check()
      {
        var tmp,str;       
        str=document.myform.password1.value;
        tmp=document.myform.password2.value;
        if(str != tmp)
          alert("兩次密碼輸入不一致，請(qǐng)重新確認(rèn)密碼?。?！");
      }
   /Script>
   
   
 /head>
 
 body>
  div class="content">
   div class="head">
      h1>歡迎來(lái)到簡(jiǎn)單購(gòu)物車(chē)系統(tǒng)注冊(cè)頁(yè)面/h1>
    /div>

    !-- 注冊(cè)面板  -->
    div class="panel">
     form name="myform" action="register_action.jsp" method="post"> 
      
      !-- 賬號(hào)和密碼組  -->
      div class="group">
        label>/label>
        input type="text" placeholder="請(qǐng)輸入注冊(cè)賬號(hào)" name="username1">
      /div>
      div class="group">
        label>/label>
        input type="password" placeholder="請(qǐng)輸入注冊(cè)密碼" name="password1">
      /div>
       div class="group">
        label>/label>
        input type="password" placeholder="請(qǐng)確認(rèn)注冊(cè)密碼" name="password2">
      /div>
                   
      !-- 注冊(cè)按鈕  -->
      div class="login">
        button type="submit" name="register" onclick="check()">注冊(cè)/button>   
        button type="reset" name="reset1">重置/button>  
      /div>
      /form>
      div class="register">
      button onclick="window.location.href='login.jsp'">返回/button> 
      /div>
    /div>
   /div>
 /body>
/html>

%@ page language="java" import="java.util.*,com.mongodb.*" pageEncoding="UTF-8"%>
%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
String text_change = "等待注冊(cè)";
%>

!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
html>
 head>
  base href="%=basePath%>">
  
  title>My JSP 'register_action.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="Content-Type" content="text/html;charset=UTF-8">
  meta http-equiv="description" content="This is my page">

 /head>
 
 body>  
  %
     response.setContentType("text/html;charset=utf-8"); //確保顯示的漢字信息以正確編碼方式顯示
     request.setCharacterEncoding("utf-8");      //確保獲取的漢字信息以正確編碼方法獲取
     String userName1=(String)request.getParameter("username1"); //獲取頁(yè)面用戶名
     String passWord1=(String)request.getParameter("password1");//獲取注冊(cè)頁(yè)面密碼1
     String passWord2=(String)request.getParameter("password2");//獲取注冊(cè)頁(yè)面密碼2
     if(!passWord1.equals(passWord2)){ 
     //如果用戶兩次輸入密碼不一致，則跳轉(zhuǎn)到注冊(cè)原頁(yè)面register.jsp,即實(shí)現(xiàn)未跳轉(zhuǎn)效果
        response.sendRedirect("register.jsp"); 
     }
  
     try{  
       // 連接到 mongodb 服務(wù)
       MongoClient mongoClient = new MongoClient( "localhost" , 27017 );
       //此處采用無(wú)用戶名和密碼驗(yàn)證方式登陸
       @SuppressWarnings("deprecation")
       DB db = mongoClient.getDB( "library" ); //連接到數(shù)據(jù)庫(kù)library
       DBCollection coll = db.getCollection("userInfo"); //獲取library數(shù)據(jù)庫(kù)中集合userInfo
       System.out.println("Collection userInfo selected successfully");
      
       DBObject user = new BasicDBObject();//定義一個(gè)Bson變量，用于存儲(chǔ)注冊(cè)的用戶名和密碼
       user.put("username", userName1);
       user.put("password", passWord1);      
       coll.insert(user);  //向集合userInfo中插入注冊(cè)用戶信息               
       response.sendRedirect("register_success.jsp"); //注冊(cè)成功后，自動(dòng)跳轉(zhuǎn)到注冊(cè)成功提示頁(yè)面
                         
     }catch(Exception e){
       System.err.println( e.getClass().getName() + ": " + e.getMessage() );
     }  
   %>
   
  
 /body>
/html>

%@ 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>注冊(cè)成功/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">
  link rel="stylesheet" type="text/css" href="css/login.css">

 /head>
 
 body>
  div class="content">
  div class="panel1">
  h1>恭喜您，您已經(jīng)成功注冊(cè)簡(jiǎn)單購(gòu)物車(chē)系統(tǒng)/h1>
  
  /div>
   div class="register">
      button onclick="window.location.href='login.jsp'">返回/button> 
      /div>
  /div>
 /body>
/html>

%@ 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>購(gòu)物頁(yè)面/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">
  !--
  link rel="stylesheet" type="text/css" href="styles.css">
  -->

 /head>
  frameset rows="30%,60%,10%" cols="*" frameborder="no" border="0" framespacing="0">
   frame src="header.jsp">
   frame src="main_shop.jsp">
   frame src="bottom.jsp">   
  /frameset>
 
 body>
  
 /body>
/html>

%@ page language="java" import="java.util.*" contentType="text/html;charset=gb2312" pageEncoding="gb2312"%>
%
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>/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">
  meta http-equiv="Content-Type" content="text/html;charset=gb2312">
  

 /head>
 
 body topmargin="0" leftmargin="0" rightmargin="0" style="background-color: #F2F2F2;overflow-x:hidden;overflow-y:hidden">
 
   form action="">
       table width="100%" height="79" border="0" cellpadding="0"
           cellspacing="0" align=center>
       tr>
        td bgcolor="F9A859" valign="top">
        table width="100%" height="100" border="0" align="center"
            cellpadding="0" cellspacing="0" bgcolor="#466BAF">
         tr>
          td align="center" style="font-size:60px;color: white;">
           簡(jiǎn)單購(gòu)物車(chē)系統(tǒng)
          /td>
         /tr> 
        
        /table>
        
        /td>
       /tr>
        tr>
         td bgcolor="F9A859" valign="top">
         table width="100%" height="50" border="0" align="center" cellpadding="0"
             cellspacing="0" bgcolor="#CC865E">
         tr>
           td align="center" style="font-size:20px;color: white;">
           歡迎你訪問(wèn)!/td>
         /tr>    
         
         /table>
         
         /td>
       /tr>       
       
       /table>
      /form>
   
 /body>
/html>

%@ 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 'bottom.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 style="background-color: #F2F2F2;overflow-x:hidden;overflow-y:hidden">
 
  hr>
h4 style="width:100%;text-align:center">Copyright @2016 舞動(dòng)的心/h4>
   
 /body>
/html>

%@ page contentType="text/html;charset=GBK" import="java.util.*,com.liuzhen.shop.MongodbBean" %>
%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

String cp=request.getParameter("cp");//cp為分頁(yè)數(shù)
//int page_number = DBBean.getTotalPage();
//int currpage = page_number;
int currpage=(cp==null||cp=="")?1:Integer.parseInt(cp);
String[][] ss = MongodbBean.getGoodList(currpage);
int n = MongodbBean.getlength(ss);

%>

!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
html>
 head>
  base href="%=basePath%>">
        
        title>購(gòu)物頁(yè)面/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">
  
  link rel="stylesheet" type="text/css" href="css/login.css">
  

 /head>
 
 body style="overflow-x:hidden;overflow-y:hidden">
 div class="content">
 div class="panel1">
  table border="1" align="center">
  tr>
  th width="30%" align="center">物品編號(hào)/th>
  th width="30%" align="center">物品名/th>
  th width="30%" align="center">定價(jià)/th>  
  th width="50%" align="center">求購(gòu)/th> 
 /tr>  
 % 
    
    for(int i=0;in;i++)
    {
%>
 tr>
  td height="30%" align="center">%= ss[i][0] %>/td>
  td height="30%" align="center">%= ss[i][1] %>/td>
  td height="30%" align="center">%= ss[i][2] %>/td>
  td height="30%" align="center">a href="Buy.jsp?sid=%= ss[i][0] %>action=buy">購(gòu)買(mǎi)/a>/td>
 /tr>
%      
    }
 
 
 %>    
  /table>
  
 % 
  int tp=MongodbBean.getTotalPage();
  
  if(currpage!=1)
  {
  
 %>
 
   a href="main_shop.jsp?cp=%=currpage-1%>">上一頁(yè)/a> 
 
 %
  
  }
  
  if(currpage!=tp)
  {  
%>
 a href="main_shop.jsp?cp=%=currpage+1%>">下一頁(yè)/a>
%   
  } 
 %>  
  
  form action="main_shop.jsp" name="myform">
   select name="cp" onchange="document.myform.submit()">
% 
  for(int i=1;i=tp;i++)
  {
%>
  option value="%=i%>" %= (i==currpage)?"selected":"" %>>第%=i%>頁(yè)/option>
%  
  }
 %>
   /select>
  /form>
/div>
  div class="register">
   
   button onclick="window.location.href='Cart.jsp'">查看購(gòu)物車(chē)/button>
  /div>
  
  /div>
 /body>
 
/html>

package com.liuzhen.shop;

import java.util.Map;
import java.util.Vector;

import com.mongodb.*;

public class MongodbBean {
  
  static int span=5;  //設(shè)定JSP頁(yè)面表單單頁(yè)顯示物品信息行數(shù)為5行
  
  //返回?cái)?shù)據(jù)庫(kù)中全部貨物編號(hào)sid
  public static String[] getGood_sid(){
    String[] good_sid_temporary = new String[100];  //定義一個(gè)長(zhǎng)度為100的暫時(shí)存放貨物編號(hào)的一維數(shù)組  
     // 連接到 mongodb 服務(wù)
    MongoClient mongoClient = new MongoClient( "localhost" , 27017 );
    //此處采用無(wú)用戶名和密碼驗(yàn)證方式登陸
    @SuppressWarnings("deprecation")
    DB db = mongoClient.getDB( "library" ); //連接到數(shù)據(jù)庫(kù)library
    DBCollection coll = db.getCollection("good"); //獲取library數(shù)據(jù)庫(kù)中集合good
    System.out.println("Collection userInfo selected successfully");
    DBCursor cursor = coll.find(); //查詢集合good中文檔信息
    
    int i=0; 
    while (cursor.hasNext()) {   //檢索集合good中所有文檔信息
      DBObject show = cursor.next();
         
      @SuppressWarnings("rawtypes")
      Map show1 = show.toMap(); //將檢索結(jié)果show(Bson類型)轉(zhuǎn)換為Map類型
      String tosid = (String)show1.get("sid"); //提取Map中字段名為sid的屬性值           
      good_sid_temporary[i] = tosid;     //將數(shù)據(jù)庫(kù)中查詢的貨物編號(hào)存儲(chǔ)入數(shù)組good_sid               
      i++;
     }
    String[] good_sid = new String[i];  //根據(jù)查詢數(shù)據(jù)遍歷集合中文檔信息i值來(lái)確定最終返回?cái)?shù)組長(zhǎng)度
    for(int j=0;ji;j++){
      good_sid[j] = good_sid_temporary[j];
    }
    
    return good_sid;
  }
  
  //返回?cái)?shù)據(jù)庫(kù)中全部貨物名稱sname
  public static String[] getGood_sname(){
    String[] good_sname_temporary = new String[100]; //定義一個(gè)長(zhǎng)度為100的暫時(shí)存放貨物名稱的一維數(shù)組
     // 連接到 mongodb 服務(wù)
    MongoClient mongoClient = new MongoClient( "localhost" , 27017 );
    //此處采用無(wú)用戶名和密碼驗(yàn)證方式登陸
    @SuppressWarnings("deprecation")
    DB db = mongoClient.getDB( "library" ); //連接到數(shù)據(jù)庫(kù)library
    DBCollection coll = db.getCollection("good"); //獲取library數(shù)據(jù)庫(kù)中集合good
    System.out.println("Collection userInfo selected successfully");
    DBCursor cursor = coll.find(); //查詢集合good中文檔信息
    
    int i=0; 
    while (cursor.hasNext()) {   //檢索集合good中所有文檔信息
      DBObject show = cursor.next();        
      @SuppressWarnings("rawtypes")
      Map show1 = show.toMap(); //將檢索結(jié)果show(Bson類型)轉(zhuǎn)換為Map類型     
      String tosname = (String)show1.get("sname"); //提取Map中字段名為sname的屬性值              
      good_sname_temporary[i] = tosname;   //將數(shù)據(jù)庫(kù)中查詢的貨物名稱存儲(chǔ)入數(shù)組good_sname             
      i++;
    }
    String[] good_sname = new String[i];  //根據(jù)查詢數(shù)據(jù)遍歷集合中文檔信息i值來(lái)確定最終返回?cái)?shù)組長(zhǎng)度
    for(int j=0;ji;j++){
      good_sname[j] = good_sname_temporary[j];
    }
    return good_sname;
  }
  
  //返回?cái)?shù)據(jù)庫(kù)中全部貨物價(jià)格sprice
  public static String[] getGood_sprice(){
    String[] good_sprice_temporary = new String[100]; //定義一個(gè)長(zhǎng)度為100的暫時(shí)存放貨物價(jià)格的一維數(shù)組
     // 連接到 mongodb 服務(wù)
    MongoClient mongoClient = new MongoClient( "localhost" , 27017 );
    //此處采用無(wú)用戶名和密碼驗(yàn)證方式登陸
    @SuppressWarnings("deprecation")
    DB db = mongoClient.getDB( "library" ); //連接到數(shù)據(jù)庫(kù)library
    DBCollection coll = db.getCollection("good"); //獲取library數(shù)據(jù)庫(kù)中集合good
    System.out.println("Collection userInfo selected successfully");
    DBCursor cursor = coll.find(); //查詢集合good中文檔信息
    
    int i=0; 
    while (cursor.hasNext()) {   //檢索集合good中所有文檔信息
      DBObject show = cursor.next();        
      @SuppressWarnings("rawtypes")
      Map show1 = show.toMap(); //將檢索結(jié)果show(Bson類型)轉(zhuǎn)換為Map類型     
      String tosprice = (String)show1.get("sprice"); //提取Map中字段名為sname的屬性值          
      good_sprice_temporary[i] = tosprice;  //將數(shù)組庫(kù)中查詢的貨物價(jià)格存儲(chǔ)入數(shù)組good_sprice           
      i++;
    }
    String[] good_sprice = new String[i];  //根據(jù)查詢數(shù)據(jù)遍歷集合中文檔信息i值來(lái)確定最終返回?cái)?shù)組長(zhǎng)度
    for(int j=0;ji;j++){
      good_sprice[j] = good_sprice_temporary[j];
    }
    return good_sprice;
  }

  //根據(jù)分頁(yè)當(dāng)前page數(shù),從數(shù)據(jù)庫(kù)中獲取當(dāng)前單個(gè)頁(yè)面貨物種類的具體信息，并以二維數(shù)據(jù)返回具體信息
  public static String[][] getGoodList(int page)
  {
    String[][] result=null;
    VectorString[]> v=new VectorString[]>(); //定義一個(gè)Vector集合，一個(gè)記錄存放一個(gè)貨物的具體信息
    String[] good_sid = getGood_sid();    //獲取貨物編號(hào)
    String[] good_sname = getGood_sname();  //獲取貨物名稱
    String[] good_sprice = getGood_sprice(); //獲取貨物價(jià)格    
    int len = good_sid.length;
    for(int i=0;ispan;i++){
      int t = (page-1)*span+i;  //獲取貨物編號(hào)
      if(t >= len){ 
        //如果當(dāng)前貨物編號(hào)大于數(shù)據(jù)庫(kù)中已有編號(hào)，則跳出循環(huán)
        break;
      }
      
      String[] good_temp=new String[3];  //定義一個(gè)長(zhǎng)度為3的數(shù)組，用于存放一個(gè)物品的編號(hào)、名稱、價(jià)格信息
      good_temp[0]=good_sid[t];
      good_temp[1]=good_sname[t];
      good_temp[2]=good_sprice[t];
      v.add(good_temp);   //將1個(gè)物品的信息存入Vector集合中
      
      
    }
    
    int size = v.size();
    result=new String[size][];  //根據(jù)Vercotr大小，給result指定行數(shù)大小
    for(int j=0;jsize;j++)
    {
      //返回Vector中一個(gè)值(其中即表示一個(gè)物品的sid,名稱和價(jià)格)，并賦值給result[j],即result二維數(shù)組一行表示一個(gè)物品具體信息
      result[j]=(String[])v.elementAt(j); 
    }
    
    return result;
  }
  
   //根據(jù)貨物sid,返回其價(jià)格信息
  public static double getPrice(String sid)
  {
    double price = 0; //定義返回物品的價(jià)格
    String[] good_sprice = getGood_sprice(); //獲取全部物品的價(jià)格
    
    int i = Integer.parseInt(sid);    //將String類型的物品編號(hào)sid轉(zhuǎn)換為int型
    String sprice = good_sprice[i];    //根據(jù)sid獲取物品的價(jià)格
    price = Double.parseDouble(sprice);  //將String類型的價(jià)格信息轉(zhuǎn)換為double型，并賦值給price
    
    return price;
  }
  
  //根據(jù)貨物sid,返回貨物的名稱和價(jià)格,一一個(gè)長(zhǎng)度為2的數(shù)組返回
  public static String[] getDetail(String sid)
  {
    String[] good_detail=null;
    good_detail = new String[2];
    String[] good_sname = getGood_sname();   //獲取全部物品名稱
    String[] good_sprice = getGood_sprice();  //獲取全部物品價(jià)格
    int i = Integer.parseInt(sid);    //將String類型的物品編號(hào)sid轉(zhuǎn)換為int型
    good_detail[0] = good_sname[i];    //根據(jù)物品編號(hào)sid，得到名稱存入數(shù)組good_detail中
    good_detail[1] = good_sprice[i];    //根據(jù)物品編號(hào)sid，得到物品價(jià)格存入數(shù)組good_detail中    
    
    return good_detail;
  }
  
  //通過(guò)查詢數(shù)據(jù)庫(kù)中貨物種類數(shù)目，以5行為一頁(yè)，返回現(xiàn)有貨物頁(yè)數(shù)
  public static int getTotalPage()
  {
    int page = 0;
    String[] good_sid = getGood_sid();
    int len = good_sid.length;
    page = len/span+((len%span==0)?0:1);  //以span(span值為5)行為一頁(yè)，計(jì)算貨物具有的頁(yè)數(shù)page
    
    return page;      
  }
      
    
  
  //返回一個(gè)二維數(shù)組的行數(shù)大小
  public static int getlength(String[][] a){
    return a.length;
  }
  
  
  public static void main(String args[]){
//    String[] good_sid = getGood_sid();  //定義一個(gè)存放貨物編號(hào)的一維數(shù)組
//    String[] good_sname = getGood_sname(); //定義一個(gè)存放貨物名稱的一維數(shù)組
//    String[] good_sprice = getGood_sprice(); //定義一個(gè)存放貨物價(jià)格的一維數(shù)組
//                   
//    for(int j=0;j10;j++){
//      System.out.println("貨物sid:"+good_sid[j]);
//      System.out.println("貨物sname:"+good_sname[j]);
//      System.out.println("貨物是price："+good_sprice[j]);
//      System.out.println("**************************");
//      System.out.println();
//    }
    
    System.out.println("分頁(yè)數(shù)目(測(cè)試)："+MongodbBean.getTotalPage());
    String[][] ss=MongodbBean.getGoodList(MongodbBean.getTotalPage());
    for(int i=0;iss.length;i++)
    {
      System.out.println(ss[i][0]);
      System.out.println(ss[i][1]);
      System.out.println(ss[i][2]);
      System.out.println("***********");
    }
    int n = ss.length;
    System.out.println("數(shù)組長(zhǎng)度為："+n);
    
    
  }
  

}

package com.liuzhen.shop;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;

public class ShopCartBean {
  
    //ShopCartBean類構(gòu)造函數(shù)
    public ShopCartBean(){
      
    }
    
    //定義一個(gè)存儲(chǔ)整形數(shù)值的鍵值對(duì)hashMap
    HashMapString, Integer> hm=new HashMapString, Integer>();
    //定義購(gòu)物車(chē)總物品總價(jià)格，初始值為0
    double total=0;
    
    //添加購(gòu)買(mǎi)的物品，存入哈希表hm中，并計(jì)算購(gòu)買(mǎi)成功后的總價(jià)格
    public void add(String sid)
    {
      if(hm.containsKey(sid))
      {
        //如果hm中包含鍵值對(duì)sid,則獲取該鍵值對(duì)中的值，并加1
        int xc=((Integer)hm.get(sid)).intValue()+1;
        //把上面獲取的xc值存入hm中
        hm.put(sid,new Integer(xc));;
      }
      else
      {
        //如果hm中不包含鍵值對(duì)sid,則將該鍵值對(duì)存入hm中，并該鍵值對(duì)值為1
        hm.put(sid,new Integer(1));      
      }
      total=total+MongodbBean.getPrice(sid); //購(gòu)買(mǎi)物品后，計(jì)算物品總價(jià)格
    }
    
    //獲取購(gòu)物車(chē)當(dāng)前物品總價(jià)格
    public double getTotal()
    {
      return total;
    }
    
    //根據(jù)物品編號(hào)sid，設(shè)定購(gòu)買(mǎi)物品數(shù)目，并將購(gòu)買(mǎi)數(shù)目存入哈希表hm中，并更新當(dāng)前購(gòu)物車(chē)物品總價(jià)格
    public void setCount(int c,String sid)
    {
      int yc=((Integer)hm.get(sid)).intValue();
      total=total+(c-yc)*MongodbBean.getPrice(sid);
      hm.put(sid,new Integer(c));  
    }
    
    //根據(jù)物品編號(hào)sid,從購(gòu)物車(chē)中刪除物品,并刪除存入哈希表hm中物品的數(shù)目，以及當(dāng)前購(gòu)物車(chē)物品總價(jià)格
    public void deleteFromCart(String sid)
    {
      int yc=((Integer)hm.get(sid)).intValue();
      total=total-yc*MongodbBean.getPrice(sid);
      hm.remove(sid);
    }
    
    //判斷當(dāng)前哈希表hm是否為空
    public boolean isEmpty()
    {
      return hm.isEmpty();
    } 
    
    //返回用戶購(gòu)買(mǎi)物品的詳細(xì)信息(物品編號(hào)、物品名稱、物品價(jià)格、物品購(gòu)買(mǎi)數(shù)量)
    public String[][] getCart()
    {
      //定義一個(gè)set集合，存放哈希表hm中鍵值對(duì)的鍵名稱
      SetString> ks=hm.keySet();
      //定義一個(gè)迭代器,用于遍歷set集合
      IteratorString> ii=ks.iterator();
      //獲取哈希表hm中鍵值對(duì)的個(gè)數(shù)
      int size=hm.size();
      //定義二維數(shù)組，存放購(gòu)買(mǎi)物品的信息
      String rs[][]=new String[size][]; 
      for(int i=0;isize;i++)
      {
        
        String sid=(String)ii.next(); //存放鍵值對(duì)的鍵名,即貨物的編號(hào)sid
        String[] sa=new String[4];  
        sa[0]=sid;    //獲取購(gòu)買(mǎi)貨物sid
        String[] sat=MongodbBean.getDetail(sid);  //根據(jù)貨物sid,獲取購(gòu)買(mǎi)貨物的名稱和價(jià)格
        sa[1]=sat[0];   //獲取購(gòu)買(mǎi)貨物名稱
        sa[2]=sat[1];   //獲取購(gòu)買(mǎi)貨物價(jià)格
        sa[3]=((Integer)hm.get(sid)).toString();  //獲取購(gòu)買(mǎi)貨物數(shù)量
        rs[i]=sa;    //將上述單個(gè)物品詳細(xì)存入二維數(shù)組rs中
      }
      return rs;
    }

}

%@ page language="java" import="java.util.*" contentType="text/html;charset=utf-8" pageEncoding="gb2312"%>
%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
jsp:useBean id="cart" scope="session" class="com.liuzhen.shop.ShopCartBean"/>
% 
 String action=request.getParameter("action");
 if(action==null)
 {
 %>
  jsp:forward page="main_shop.jsp"/>
 % 
 }
 else if(action.trim().equals("buy"))
 {
   String sid=request.getParameter("sid");
   cart.add(sid.trim());  
 %>
 jsp:forward page="main_shop.jsp"/>
 %
 }
 else if(action.trim().equals("gc"))
 {
   String sid=request.getParameter("sid");
   String count=request.getParameter("count");
   cart.setCount(Integer.parseInt(count),sid);
 %>
  jsp:forward page="Cart.jsp"/>
 %   
 }
 else if(action.trim().equals("del"))
 {
   String sid=request.getParameter("sid");
   cart.deleteFromCart(sid);
 %>
  jsp:forward page="Cart.jsp"/>
 %
 }
 %>
 

!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
html>
 head>
  base href="%=basePath%>">
  
  title>/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">
  !--
  link rel="stylesheet" type="text/css" href="styles.css">
  -->

 /head>
 
 body>
  
 /body>
/html>

%@ page language="java" import="java.util.*" contentType="text/html;charset=gb2312" import="com.liuzhen.shop.MongodbBean" 
pageEncoding="gb2312"%>
%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
jsp:useBean id="cart" scope="session" class="com.liuzhen.shop.ShopCartBean"/> 
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
html>
 head>
  base href="%=basePath%>">
  
  title>購(gòu)物車(chē)/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">
  meta http-equiv="Content-Type" content="text/html;charset=gb2312">
  link rel="stylesheet" type="text/css" href="css/login.css">

  

 /head>
 
 body>
  div class="content">
  div class="panel1">
  % 
 if(cart.isEmpty())
 {
 %>
 font color="red" size="20">購(gòu)物車(chē)中沒(méi)有任何商品?。?！/Font>
 % 
 }
 else
 { 
 %> 
 h2>購(gòu)物車(chē)/h2>
   table border="1">
  tr>
   td width="27%" align="center">物品編號(hào)/td>
   td width="27%" align="center">物品名/td>
   td width="27%" align="center">定價(jià)/td>  
   td width="27%" align="center">數(shù)量/td> 
   td width="27%" align="center">求購(gòu)/td>
  /tr>   
 %
  String[][] ssa=cart.getCart();
  for(int i=0;issa.length;i++)
  {
 %>
  tr>
   td height="30%" align="center">%= ssa[i][0] %>/td>
   td height="30%" align="center">%= ssa[i][1] %>/td>
   td height="30%" align="center">%= ssa[i][2] %>/td>  
   td>   
    form action="Buy.jsp" method="post">
     input type="text" name="count" value="%= ssa[i][3] %>">
     input type="hidden" name="sid" value="%= ssa[i][0] %>"> 
     input type="hidden" name="action" value="gc">    
    /form>   
   /td> 
   td>a href="Buy.jsp?sid=%= ssa[i][0] %>action=del">刪除/a>/td>
  /tr>    
 %
  }
 %>  
   /table>
   br>
   br>
   本訂單總價(jià)為：%= Math.round(cart.getTotal()*100)/100.0%>
 %
 }
 %>
 
   
   br>
  div class="register">
   button onclick="window.location.href='main_shop.jsp'">繼續(xù)購(gòu)物/button>
  /div>
 /div>
 /div>
 /body>
/html>