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Oracle & JSP 开发的小型信息管理系统 (三) 源代码2

2005-03-25 20:48 731 查看

//articleconn.jsp 数据库连接文件,几乎被每个页面包含,有的页面去掉获得Session,修改一下这个代码,很简单
<%@ page contentType="text/html;charset=big5"%>
<%@ page import="java.sql.*"%>
<%

request.setCharacterEncoding("big5");
Connection conn=null;
Statement stmt=null;
try{
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String url="jdbc:oracle:thin:@192.168.56.199:1521:asdb";
String user="system";
String password="oracle01";
conn=DriverManager.getConnection(url, user, password);
}
catch(Exception e1){
e1.printStackTrace();}

%>

//************************************manage.jsp管理页面,提供分页,修改,删除,添加的链接
<%/*Cookie cookies[]=request.getCookies();
if(cookies==null)
{ response.sendRedirect("login.jsp"); }
String userName=(String)session.getAttribute("admin");
out.println("Welcome, "+userName);
if(userName==null)
{response.sendRedirect("login.jsp");}*/
%>
<%@ include file="articleconn.jsp"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=big5">
<title>管理文件</title>
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<link rel="stylesheet" href="css/style.css">
</head>
<%
request.setCharacterEncoding("big5");
String query=" Select * "+
" from learning order by article_id ";
String title=null;

String queryCount=" select count(*)from learning ";
String strPage=request.getParameter("strPage");
int intPage;
if(strPage==null){
intPage=1;}
else
{intPage=Integer.parseInt(strPage);}
int pageSizes=10;//每頁顯示信息數目
int counts=1;//信息總條數
int pageCounts=1;//總頁數
try{
PreparedStatement ps=conn.prepareStatement(queryCount);
ResultSet rs=ps.executeQuery();
if(rs.next()){
counts=Integer.parseInt(rs.getString(1));}

%>
<body bgcolor="#FFFFFF">
<br> <p align="left">
<a href="add.jsp">添加信息</a>
<a href="index.jsp">返回首頁</a>
</p>

<p> </p>
<table width="700" border="1" cellspacing="0" cellpadding="0" align="center" bordercolorlight="#000000" bordercolordark="#FFFFFF">
<tr bgcolor="#99CCFF">
<td height="10" bgcolor="#B5D85E">
<div align="center">
<b>管理界面</b>
</div>
</td>
</tr>
<tr>
<td height="49">
<%-- 分頁 --%>

<table border="1" cellspacing="0" width="90%" bgcolor="#F0F8FF" bordercolorlight="#000000" bordercolordark="#FFFFFF" align="center">
<tr>
<td width="12%" align="center">
<strong>ID 號</strong>
</td>
<td width="13%" align="center">
<b>類型</b>
</td>
<td width="47%" align="center">
<strong>信息名稱</strong>
</td>
<td width="14%" align="center">
<strong>修改</strong>
</td>
<td width="14%" align="center">
<strong>刪除</strong>
</td>
</tr>
<%
//計算總頁數
if(counts%pageSizes==0){pageCounts=counts/pageSizes;}
else{pageCounts=counts/pageSizes+1;}
if(intPage>pageCounts)
{intPage=pageCounts;}
int i=(intPage-1)*pageSizes;

ps=conn.prepareStatement(query);
ResultSet rs1=ps.executeQuery();
/*while(rs1.next())
{String temp=rs1.getString("title");
out.println(temp);}*/
if(counts!=1){
for( int j=0; j<i ; j++)
rs1.next();}
//out.println(rs1+"<BR><BR><BR> ");

i=0;
while(rs1.next()&&i<pageSizes){
if(counts==0)
{out.println("<font size=4 color=red>沒有您想看的數據!</font>");}
%>
<tr>
<td width="12%" height="7">
<p align="center">
<%= rs1.getString("article_id")%>
</p>
</td>
<td width="13%" height="7">
<div align="center">
<%= rs1.getString("types")%>
</div>
</td>
<td width="47%" height="7">
<%title= rs1.getString("title");
out.println(title);
%>
</td>
<td width="14%" align="center" height="7">
<a href="edit.jsp?id=<%=rs1.getInt("article_id")%>">修改</a>
</td>
<td width="14%" align="center" height="7">
<a href="delete.jsp?id=<%=rs1.getInt("article_id")%>&title=<%=title%>">刪除</a>
</td>
</tr>
<% i++;}%>
</table>
<%
}
catch(SQLException se1){se1.printStackTrace();}
finally{}

conn.close();
%>
</td>
</tr>
</table>

<form action="manage.jsp" method="post" >
第<%=intPage%>頁,共<%=pageCounts%>頁
<%
if(intPage<pageCounts){
%><a href="manage.jsp?strPage=<%=intPage+1%>">下一頁</a>
<%}if(intPage>1){%>
<a href="manage.jsp?strPage=<%=intPage-1%>">上一頁</a><%}%>
<br>到第<input type="text" maxlength="5" name="strPage" value="1"/>頁進行查看
<input type="submit" value="確認" class="buttonface"/>
</form>
<br> <p align="left">
<a href="add.jsp">添加信息</a>
<a href="index.jsp">返回首頁</a>
</p>
<P> </P>
</body>
</html>

//******************************************FilterSpecial .java过滤用户输入
package moonsoft.test.j2ee.news;

public class FilterSpecial
{
public FilterSpecial()
{
}
public static String filter(String input)
{
if(!hasSpecialChars(input))
{
return input;
}
StringBuffer filtered =new StringBuffer(input.length());
char c;
for(int i=0; i<=input.length()-1; i++)
{
c=input.charAt(i);
switch(c)
{
case '<':filtered.append("<"); break;
case '>':filtered.append(">"); break;
case '"':filtered.append("&uot;"); break;
case '&':filtered.append("&"); break;
default: filtered.append(c);
}

}
return (filtered.toString());
}
public static boolean hasSpecialChars(String input)
{
boolean flag=false;
if((input!=null)&&(input.length()>0))
{
char c;
for(int i=0; i<=input.length()-1; i++)
{
c=input.charAt(i);
switch(c)
{
case '>': flag=true; break;
case '<': flag=true; break;
case '"': flag=true; break;
case '&': flag=true; break;
}
}
}
return flag;
}
}

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Oracle &amp; JSP 开发的小型信息管理系统 (三) 源代码2

Oracle & JSP 开发的小型信息管理系统 (三) 源代码2