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项目名称：中国电信运营支持系统-网络版（七）
案例演示：
工程案例目录结构
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<display-name>netctoss</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>main</servlet-name>
<servlet-class>web.MainServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>main</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!-- 每页显示行数 -->
<context-param>
<param-name>size</param-name>
<param-value>5</param-value>
</context-param>
</web-app>find.jsp
<%@page pageEncoding="utf-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>案例-NetCTOSS</title>
<!--
当前:/netctoss/findCost.do
目标：/netctoss/styles/global.css
-->
<link type="text/css" rel="stylesheet" media="all" href="styles/global.css"/>
<link type="text/css" rel="stylesheet" media="all" href="styles/global_color.css"/>
<script language="javascript" type="text/javascript">
//排序按钮的点击事件
function sort(btnObj){
if(btnObj.className=="sort_desc"){
btnObj.className="sort_asc";
}else{
btnObj.className="sort_desc";
}
}
//启用
function startFee(){
var r = window.confirm("确定要启用此资费吗？资费启用后将不能修改和删除。")
document.getElementById("operate_result_info").style.display="block";
}
//删除
function deleteFee(costId){
var r = window.confirm("确定要删除此资费吗？");
if(r){
location.href="deleteCost.do?costId="+costId;
}
}
</script>
</head>
<body>
<!-- Logo区域开始 -->
<div id="header">
<img src="images/logo.png" alt="logo" class="left" />
<a href="#">[退出]</a>
</div>
<!-- Logo区域结束 -->
<!-- 导航区域开始 -->
<div id="navi">
<ul id="menu">
<li><a href="../index.html" class="index_off"></a></li>
<li><a href="../role/role_list.html" class="role_off"></a></li>
<li><a href="../admin/admin_list.html" class="admin_off"></a></li>
<li><a href="../fee/fee_list.html" class="fee_off"></a></li>
<li><a href="../account/account_list.html" class="account_off"></a></li>
<li><a href="../service/service_list.html" class="service_off"></a></li>
<li><a href="../bill/bill_list.html" class="bill_off"></a></li>
<li><a href="../report/report_list.html" class="report_off"></a></li>
<li><a href="../user/user_info.html" class="information_off"></a></li>
<li><a href="../user/user_modi_pwd.html" class="password_off"></a></li>
</ul>
</div>
<!-- 导航区域结束 -->
<!-- 主要区域开始 -->
<div id="main">
<form action="" method="">
<!-- 排序 -->
<div class="search_add">
<div>
<!-- <input type="button" value="月租" class="sort_asc" onclick="sort(this)"/>
<input type="button" value="基费" class="sort_asc" onclick="sort(this)"/>
<input type="button" value="时长" class="sort_asc" onclick="sort(this)"/> -->
</div>
<!--
当前：/netctoss/findCost.do
目标:/netctoss/toAddCost.do
-->
<input type="button" value="增加" class="btn_add" onclick="location.href='toAddCost.do';" />
</div>
<!-- 启用操作的操作提示 -->
<div id="operate_result_info" class="operate_success">
<img src="images/close.png" alt="" onclick="this.parentNode.style.display='none';"/>
删除成功！
</div>
<!-- 数据区域：用表格展示数据 -->
<div id="data">
<table id="datalist">
<tr>
<th>资费ID</th>
<th class="width100">资费名称</th>
<th>基本时长</th>
<th>基本费用</th>
<th>单位费用</th>
<th>创建时间</th>
<th>开通时间</th>
<th class="width50">状态</th>
<th class="width200"></th>
</tr>
<c:forEach items="${costs }" var="c">
<!-- <tr>
<td>1</td>
<td><a href="fee_detail.html">包 20 小时</a></td>
<td>20 小时</td>
<td>24.5 元</td>
<td>3.00 元</td>
<td>2013/01/01 00:00:00</td>
<td></td>
<td>暂停</td>
<td>
<input type="button" value="启用" class="btn_start" onclick="startFee();"/>
<input type="button" value="修改" class="btn_modify" onclick="location.href='fee_modi.html'"/>
<input type="button" value="删除" class="btn_delete" onclick="deleteFee();"/>
</td>
</tr>
<tr>
<td>2</td>
<td><a href="fee_detail.html">包 40 小时</a></td>
<td>40 小时</td>
<td>40.50 元</td>
<td>3.00 元/小时</td>
<td>2013/01/21 00:00:00</td>
<td>2013/01/23 00:00:00</td>
<td>开通</td>
<td></td>
</tr> -->
<tr>
<td>${c.costId }</td>
<td><a href="fee_detail.html">${c.name }</a></td>
<td>${c.baseDuration } 小时</td>
<td>${c.baseCost } 元</td>
<td>${c.unitCost } 元/小时</td>
<td><fmt:formatDate value="${c.creatime }" pattern="yyyy/MM/dd" /></td>
<td><fmt:formatDate value="${c.startime }" pattern="yyyy/MM/dd" /></td>
<td>
<c:if test="${c.status=='0' }">开通</c:if>
<c:if test="${c.status=='1' }">暂停</c:if>
</td>
<td>
<input type="button" value="启用" class="btn_start" onclick="startFee();"/>
<input type="button" value="修改" class="btn_modify" onclick="location.href='toUpdateCost.do?id=${c.costId }';"/>
<input type="button" value="删除" class="btn_delete" onclick="deleteFee(${c.costId });"/>
</td>
</tr>
</c:forEach>
</table>
<p>业务说明:<br />
1、创建资费时,状态为暂停，记载创建时间;<br />
2、暂停暂停下，可修改，可删除<br />
3、开通后，记载开通时间，且开通后不能修改、不能再停用、也不能删除<br />
4、业务账号修改资费时，在下月底统一触发，修改其关联的资费ID（此触发动作由程序处理）<br />
</p>
</div>
<!-- 分页 -->
<div id="pages">
<!-- 当前是第1页，则不能点上一页 -->
<c:if test="${page==1 }">
<a href="">上一页</a>
</c:if>
<c:if test="${page !=1 }">
<a href="findCost.do?page=${page-1 }">上一页</a>
</c:if>
<!--
begin:循环起始位置；
end： 循环终止位置：
-->
<c:forEach begin="1" end="${total }" var="i">
<!-- 若循环到了当前页，则将页码高亮显示 -->
<c:if test="${i==page }">
<a href="findCost.do?page=${i }" class="current_page">${i }</a>
</c:if>
<!-- 若不是当前页，则去掉高亮的样式 -->
<c:if test="${i !=page }">
<a href="findCost.do?page=${i }">${i }</a>
</c:if>
</c:forEach>
<!-- 当前页是最后一页，则不能点下一页 -->
<c:if test="">
<a href="${page ==total }">下一页</a>
</c:if>
<c:if test="${page !=total }">
<a href="findCost.do?page=${page+1 }">下一页</a>
</c:if>
</div>
</form>
</div>
<!-- 主要区域结束 -->
<div id="footer">
<p>[源自东北的技术，最牛逼的老师，最真实的企业环境，最实用的实战项目]</p>
<p>版权所有(C)牛逼学院IT培训集团公司</p>
</div>
</body>
</html>MainServlet.java
package web;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import dao.CostDao;
import entity.Cost;
public class MainServlet extends HttpServlet{
@Override
protected void service(HttpServletRequest req,
HttpServletResponse res) throws ServletException, IOException {
String path = req.getServletPath();
if("/findCost.do".equals(path)){
//查询资费
System.out.println(path);
findCost(req,res);
}else if("/toAddCost.do".equals(path)){
//打开增加资费页
toAddCost(req,res);
}else if("/addCost.do".equals(path)){
//增加保存资费
addCost(req,res);
}else if("/toUpdateCost.do".equals(path)){
//打开修改资费页
toUpdateCost(req,res);
}else if("/updateCost.do".equals(path)){
//修改资费
updateCost(req,res);
}else if("/deleteCost.do".equals(path)){
//删除资费
deleteCost(req,res);
}else{
//错误的路径
throw new RuntimeException("没有这个页面");
}
}
protected void deleteCost(HttpServletRequest req,
HttpServletResponse res) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
String costId = req.getParameter("costId");
CostDao dao = new CostDao();
dao.delete(new Integer(costId));
System.out.println("deleteCost......");
//3.重定向到查询
//当前:/netctoss/deleteCost.do
//目标：/netctoss/findCost.do
res.sendRedirect("findCost.do");
}
protected void updateCost(HttpServletRequest req,
HttpServletResponse res) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
//1.接收表单数据
String costId = req.getParameter("costId");
String name = req.getParameter("name");
String costType = req.getParameter("costType");
String descr = req.getParameter("descr");
String baseDuration = req.getParameter("baseDuration");
String baseCost = req.getParameter("baseCost");
String unitCost = req.getParameter("unitCost");
//2.保存这些数据
Cost c = new Cost();
c.setCostId(new Integer(costId));
c.setName(name);
c.setCostType(costType);
c.setDescr(descr);
if(baseDuration !=null && !baseDuration.equals("")){//
c.setBaseDuration(new Integer(baseDuration));
}
if(baseCost !=null && !baseCost.equals("")){
c.setBaseCost(new Double(baseCost));
}
if(unitCost !=null && !unitCost.equals("")){
c.setUnitCost(new Double(unitCost));
}
CostDao dao = new CostDao();
System.out.println(c);
dao.update(c);
//3.重定向到查询
//当前:/netctoss/addCost.do
//目标：/netctoss/findCost.do
res.sendRedirect("findCost.do");
}
protected void toUpdateCost(HttpServletRequest req,
HttpServletResponse res) throws ServletException, IOException {
System.out.println("toUpdateCost.......");
//接收参数
String id = req.getParameter("id");
//查询要修改的资费
CostDao dao = new CostDao();
Cost cost = dao.findById(new Integer(id));
//转发到修改页
req.setAttribute("cost", cost);
req.getRequestDispatcher("WEB-INF/cost/update.jsp").forward(req, res);
}
protected void addCost(HttpServletRequest req,
HttpServletResponse res) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
//1.接收表单数据
String name = req.getParameter("name");
String costType = req.getParameter("costType");
String descr = req.getParameter("descr");
String baseDuration = req.getParameter("baseDuration");
String baseCost = req.getParameter("baseCost");
String unitCost = req.getParameter("unitCost");
//2.保存这些数据
Cost c = new Cost();
c.setName(name);
c.setCostType(costType);
c.setDescr(descr);
if(baseDuration !=null && !baseDuration.equals("")){//
c.setBaseDuration(new Integer(baseDuration));
}
if(baseCost !=null && !baseCost.equals("")){
c.setBaseCost(new Double(baseCost));
}
if(unitCost !=null && !unitCost.equals("")){
c.setUnitCost(new Double(unitCost));
}
CostDao dao = new CostDao();
dao.save(c);
//3.重定向到查询
//当前:/netctoss/addCost.do
//目标：/netctoss/findCost.do
res.sendRedirect("findCost.do");
}
protected void toAddCost(HttpServletRequest req,
HttpServletResponse res) throws ServletException, IOException {
//当前：/netctoss/toAddCost.do
//目标：/netctoss/WEB-INF/cost/add.jsp
req.getRequestDispatcher("WEB-INF/cost/add.jsp").forward(req, res);
}
protected void findCost(HttpServletRequest req,
HttpServletResponse res) throws ServletException, IOException {
//v1
// //查询资费
// CostDao dao = new CostDao();
// List<Cost> list = dao.findAll();
// //转发到查询页面
// req.setAttribute("costs", list);
// //当前：/netctoss/findCost.dao
// //目标：/netctoss/WEB-INF/cost/find.jsp
// System.out.println("into--findCost");
// req.getRequestDispatcher("WEB-INF/cost/find.jsp").forward(req, res);
//v2 分页
//获取请求参数
String page = req.getParameter("page");
if(page == null || page.equals("")){
page = "1";
}
System.out.println(page);
//获取常量
String size = this.getServletContext().getInitParameter("size");
//查询资费
CostDao dao = new CostDao();
List<Cost> list= dao.findByPage(new Integer(page), new Integer(size));
//查询总行数，计算出总页数
int rows = dao.findRows();
int total =rows/(new Integer(size));
if(rows%new Integer(size) != 0){
total++;
}
//转发到查询页面
req.setAttribute("costs", list);
req.setAttribute("total", total);
req.setAttribute("page", page);
//当前：/netctoss/findCost.do
//目标：/netctoss/WEB-INF/cost/find.jsp
req.getRequestDispatcher("WEB-INF/cost/find.jsp").forward(req, res);
}
}
CostDao.java
package dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import entity.Cost;
import util.DBUtil;
public class CostDao {
public List<Cost> findAll(){
Connection conn = null;
try {
conn = DBUtil.getConnection();
String sql = "select * from cost "
+"order by cost_id";
PreparedStatement ps = conn.prepareStatement(sql);
ResultSet rs= ps.executeQuery();
List<Cost> list = new ArrayList<Cost>();
while(rs.next()){
Cost c = new Cost();
c.setCostId(rs.getInt("cost_id"));
c.setName(rs.getString("name"));
c.setBaseDuration(rs.getInt("base_duration"));
c.setBaseCost(rs.getDouble("base_cost"));
c.setUnitCost(rs.getDouble("unit_cost"));
c.setStatus(rs.getString("status"));
c.setDescr(rs.getString("descr"));
c.setCreatime(rs.getTimestamp("creatime"));
c.setStartime(rs.getTimestamp("startime"));
c.setCostType(rs.getString("cost_type"));
list.add(c);
}
return list;
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException("查询资费失败",e);
}finally{
DBUtil.close(conn);
}
}
/**
* Alt+Shift+M
* @param rs
* @return
* @throws SQLException
*/
private Cost createCost(ResultSet rs) throws SQLException {
Cost c = new Cost();
c.setCostId(rs.getInt("cost_id"));
c.setName(rs.getString("name"));
c.setBaseDuration(rs.getInt("base_duration"));
c.setBaseCost(rs.getDouble("base_cost"));
c.setUnitCost(rs.getDouble("unit_cost"));
c.setStatus(rs.getString("status"));
c.setDescr(rs.getString("descr"));
c.setCreatime(rs.getTimestamp("creatime"));
c.setStartime(rs.getTimestamp("startime"));
c.setCostType(rs.getString("cost_type"));
return c;
}
/**
* 状态默认为暂停态1；
* 创建时间默认为系统时间
* 开通时间默认为null；
* @param cost
*/
public void save(Cost cost) {
Connection conn = null;
try {
conn = DBUtil.getConnection();
String sql = "insert into cost values("
+"cost_seq.nextval,"
+"?,?,?,?,'1',?,sysdate,null,?)";
PreparedStatement ps = conn.prepareStatement(sql);
ps.setString(1, cost.getName());
//setInt/SetDouble不允许传入null；
//但当前业务中这些字段是允许为null；
//将方法换成setObject
ps.setObject(2, cost.getBaseDuration());
ps.setObject(3, cost.getBaseCost());
ps.setObject(4, cost.getUnitCost());
ps.setString(5, cost.getDescr());
ps.setString(6, cost.getCostType());
ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException("增加资费失败",e);
}finally{
DBUtil.close(conn);
}
}
public Cost findById(int id) {
Connection conn = null;
try {
conn = DBUtil.getConnection();
String sql = "select * from cost "
+"where cost_id=?";
PreparedStatement ps = conn.prepareStatement(sql);
ps.setInt(1, id);
ResultSet rs = ps.executeQuery();
if(rs.next()){
return createCost(rs);
}
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException("查询资费失败",e);
}finally{
DBUtil.close(conn);
}
return null;
}
public void update(Cost cost) {
Connection conn = null;
try {
conn = DBUtil.getConnection();
String sql = "update cost set "
+"name=?,"
+"base_duration=?,"
+"base_cost=?,"
+"unit_cost=?,"
+"descr=?,"
+"cost_type=? "
+"where cost_id=?";
System.out.println(sql);
PreparedStatement ps = conn.prepareStatement(sql);
ps.setString(1, cost.getName());
//setInt/SetDouble不允许传入null；
//但当前业务中这些字段是允许为null；
//将方法换成setObject
ps.setObject(2, cost.getBaseDuration());
ps.setObject(3, cost.getBaseCost());
ps.setObject(4, cost.getUnitCost());
ps.setString(5, cost.getDescr());
ps.setString(6, cost.getCostType());
ps.setInt(7, cost.getCostId());
ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException("修改资费失败",e);
}finally{
DBUtil.close(conn);
}
}
/**
* 删除指定资费ID 的资费记录
* @param integer
*/
public void delete(Integer costId) {
Connection conn = null;
System.out.println("delete.........");
try {
conn = DBUtil.getConnection();
String sql = "delete from cost where cost_Id=?";
PreparedStatement ps = conn.prepareStatement(sql);
ps.setInt(1, costId);
ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException("删除资费失败",e);
}finally{
DBUtil.close(conn);//如果不加此代码 会出现网页宕住
}
}
public int findRows(){
Connection conn = null;
try {
conn = DBUtil.getConnection();
String sql = "select count(*) from cost";
PreparedStatement ps = conn.prepareStatement(sql);
ResultSet rs = ps.executeQuery();
if(rs.next()){
return rs.getInt(1);
}
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException("查询总行说失败",e);
}finally{
DBUtil.close(conn);
}
return 0;
}
/**
* 查询某一页的资费数据
* @param page 页码
* @param size 每页显示的行数
* @return
*/
public List<Cost> findByPage(int page,int size){
Connection conn = null;
try {
conn = DBUtil.getConnection();
String sql = "select * from ("
+" select c.*,rownum r from ("
+" select * from cost "
+" order by cost_id "
+" ) c"
+" ) where r between ? and ?";
PreparedStatement ps = conn.prepareStatement(sql);
ps.setInt(1, (page-1)*size+1);
ps.setInt(2, page*size);
ResultSet rs = ps.executeQuery();
List<Cost> list = new ArrayList<Cost>();
while(rs.next()){
Cost c = createCost(rs);
list.add(c);
}
return list;
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException("分页查询资费失败",e);
}finally{
DBUtil.close(conn);
}
}
public static void main(String[] args) {
// CostDao dao = new CostDao();
// List<Cost> list = dao.findAll();
// for(Cost c: list){
// System.out.println(c.getCostId()+","+c.getName());
// }
// CostDao dao = new CostDao();
// Cost c = new Cost();
// c.setName("包月");
// //c.setBaseDuration(600);
// c.setBaseCost(800.0);
// //c.setUnitCost(0.6);
// c.setDescr("包月很爽");
// c.setCostType("1");
// dao.save(c);
// CostDao dao = new CostDao();
// int rows = dao.findRows();
// System.out.println(rows);
CostDao dao = new CostDao();
List<Cost> list = dao.findByPage(2, 3);
for(Cost c:list){
System.out.println(c.getCostId());
}
}
}
将netctoss工程部署到Tomcat上，运行Tomcat启动案例工程，
浏览器录入http://localhost:8080/netctoss/findCost.do 即可：如果没有错误，最终页面显示效果应如下图：
点击页码即可查询对应页码的记录
