本文實例講述了JSP簡單添加,查詢功能。分享給大家供大家參考。具體如下：
JSP技術:
public class ISOtoGb2312
{
public static String convert( String str )
{
try
{
byte<> bytesStr=str.getBytes( "ISO-8859-1" ) ;
return new String( bytesStr, "gb2312" ) ;
}
catch( Exception ex)
{
return str ;
}
}
}
<%@ page contentType="text/html; charset=GB2312" %> <html> <head> <title> 輸入數據 </title> </head> <body bgcolor="#ffffff"> <h1> 請輸入數據: </h1> <hr> <form method="POST" action="insert.jsp"> <!--webbot bot="SaveResults" U-File="fpweb:///_private/form_results.txt" S-Format="TEXT/CSV" S-Label-Fields="TRUE" --> <p> </p> <p> </p> <p><img border="0" src="img/cisco.gif" width="70" height="81"> <font size="5" color="#0000FF"><b>學 號: </b></font><input type="text" name="id" size="25"> <img border="0" src="img/cisco.gif" width="70" height="81"> <font size="5" color="#0000FF"><b>性 別</b></font><font size="5" color="#0000FF"><b>: </b></font><input type="text" name="sex" size="24"></p> <p><img border="0" src="img/cisco.gif" width="70" height="81"> <font size="5" color="#000080"><b>姓 名: </b></font><input type="text" name="name" size="25"> <img border="0" src="img/cisco.gif" width="70" height="81"> <font size="5" color="#0000FF"><b>年 齡: </b></font><input type="text" name="age" size="24"></p> <p><img border="0" src="img/cisco.gif" width="70" height="81"> <font size="5" color="#000080"><b>地 址: </b></font><input type="text" name="addr" size="84"> </p> <p> </p> <p> <input type="submit" value="提交" name="B1" style="font-size: 14pt; font-weight: bold"> <input type="reset" value="全部重寫" name="B2" style="font-size: 14pt; font-weight: bold"> </p> </form> </body> </html>
<%@ page contentType="text/html; charset=GB2312" %>
<%@ page import = "java.sql.*"%>
<%@ page language = "java"%>
<%@ page import = "test.ISOtoGb2312"%>
<html>
<head>
<title>
添加數據
</title>
</head>
<body bgcolor="#ffffff">
<h1>
接收數據,添加到數據庫.
</h1>
<%
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); //載入驅動程序類別
Connection con = DriverManager.getConnection("jdbc:odbc:zjyds1"); //建立數據庫鏈接
Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
String strSQL;
strSQL = "INSERT INTO tab02(id, name, sex, " +
"age, addr) Values (" +
ISOtoGb2312.convert( request.getParameter("id")) + "," +
ISOtoGb2312.convert( request.getParameter("name")) + "," +
ISOtoGb2312.convert( request.getParameter("sex")) + "," +
ISOtoGb2312.convert( request.getParameter("age")) + "," +
ISOtoGb2312.convert( request.getParameter("addr")) + ")";
stmt.executeUpdate(strSQL);
ResultSet rs; //建立ResultSet(結果集)對象
rs = stmt.executeQuery("SELECT * FROM tab02"); //執行SQL語句
%>
<CENTER>
<TABLE bgcolor=pink>
<TR bgcolor=silver>
<TD><B>編號</B></TD><TD><B>姓 名 </B></TD><TD><B>性 別</B></TD><TD><B> 年 齡</B></TD><TD><B>地 址</B></TD>
</TR>
<%
//利用while循環將數據表中的記錄列出
while (rs.next())
{
%>
<TR bgcolor=white>
<TD><B><%= rs.getString("id") %></B></TD>
<TD><B><%= rs.getString("name") %></B></TD>
<TD><B><%= rs.getString("sex") %></B></TD>
<TD><B><%= rs.getString("age") %></B></TD>
<TD><B><%= rs.getString("addr") %></B></TD>
</TR>
<%
}
rs.close(); //關閉ResultSet對象
stmt.close(); //關閉Statement對象
con.close(); //關閉Connection對象
%>
</TABLE>
</CENTER>
<h3><a href="jsp1.jsp">返回</a></h3>
</body>
</html>
jsp1:
<%@ page contentType="text/html; charset=GB2312" %> <%@ page import="com.borland.internetbeans.*,com.borland.dx.dataset.*,com.borland.dx.sql.dataset.*" %> <%@ taglib uri="/internetbeans.tld" prefix="ix" %> <%@ taglib uri="http://java.sun.com/jstl/sql" prefix="sql" %> <html> <head> <title> jsp1 </title> </head> <jsp:useBean id="jsp1BeanId" scope="session" class="test.Jsp1Bean" /> <jsp:setProperty name="jsp1BeanId" property="*" /> <body bgcolor="#ff00ff"> <h1> JBuilder Generated JSP <br> <hr> 這是第一次使用JSP技術 !!!----2004/3/1--南昌大學軟件學院---- </h1> <h3><a href="tmp/page_1.htm">另一頁</a></h3> <br> <h3><a href="jsp2.jsp">下一頁</a></h3> <br> <h3><a href="DBBean.jsp">數據庫</a></h3> <form method="post"> <br>Enter new value : <input name="sample"><br> <br> <input type="submit" name="Submit" value="Submit"> <input type="reset" value="Reset"> <br> Value of Bean property is :<jsp:getProperty name="jsp1BeanId" property="sample" /> </form> <h3><a href="jsp4.jsp">登錄</a></h3> </body> </html>
Jsp1Bean.java
package test;
/*aaaaaaa
bbbbbbb
ccccccccc*/
/**
* <p>Title: </p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2004</p>
* <p>Company: </p>
* @author not attributable
* @version 1.0
*/
public class Jsp1Bean {
private String sample = "Start value";
//Access sample property
public String getSample() {
return sample;
}
//Access sample property
public void setSample(String newValue) {
if (newValue!=null) {
sample = newValue;
}
}
}
jsp2:
<%@ page contentType="text/html; charset=GB2312" %>
<%@ page import="java.sql.*" %>
<%@ page language="java" %>
<HTML>
<HEAD>
<TITLE>順序取得數據</TITLE>
</HEAD>
<BODY>
<CENTER>
<FONT SIZE = 5 COLOR = blue>順序取得數據</FONT>
</CENTER>
<BR>
<HR>
<BR>
<CENTER>
<%
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); //載入驅動程序類別
Connection con = DriverManager.getConnection("jdbc:odbc:zjyds1"); //建立數據庫鏈接
Statement stmt = con.createStatement(); //建立Statement對象
ResultSet rs; //建立ResultSet(結果集)對象
rs = stmt.executeQuery("SELECT * FROM tab01"); //執行SQL語句
%>
<TABLE bgcolor=pink>
<TR bgcolor=silver>
<TD><B>學 號</B></TD><TD><B>姓 名 </B></TD><TD><B>性 別 </B></TD><TD><B>年 齡 </B></TD><TD><B>地 址</B></TD>
</TR>
<%
//利用while循環將數據表中的記錄列出
while (rs.next())
{
%>
<TR bgcolor=white>
<TD><B><%= rs.getString("id") %></B></TD>
<TD><B><%= rs.getString("name") %></B></TD>
<TD><B><%= rs.getString("sex") %></B></TD>
<TD><B><%= rs.getString("age") %></B></TD>
<TD><B><%= rs.getString("addr") %></B></TD>
</TR>
<%
}
rs.close(); //關閉ResultSet對象
stmt.close(); //關閉Statement對象
con.close(); //關閉Connection對象
%>
</TABLE>
</CENTER>
</BODY>
</HTML>
jsp3:
<%@ page contentType="text/html; charset=GB2312" %> <html> <head> <title> jsp3 </title> </head> <jsp:useBean id="jsp3BeanId" scope="session" class="test.Jsp3Bean" /> <jsp:setProperty name="jsp3BeanId" property="*" /> <body bgcolor="#ffffc0"> <h1> JBuilder Generated JSP </h1> <form method="post"> <br>Enter new value : <input name="sample"><br> <br><br> <input type="submit" name="Submit" value="Submit"> <input type="reset" value="Reset"> <br> Value of Bean property is :<jsp:getProperty name="jsp3BeanId" property="sample" /> </form> </body> </html>
jsp4:
<%@ page contentType="text/html; charset=GB2312" %> <html> <head> <title> 登錄 </title> </head> <body bgcolor="#ffffc0"> <form method="POST" action="jsp6.jsp"> <p align="center"> 用戶名：<input type="text" name="username" size="20"></p> <p align="center"> 密 碼：<input type="password" name="password" size="20"></p> <p align="center"> <input type="radio" value="manage" checked name="select"> 管理 <input type="radio" name="select" value="statistic">統計</p> <p align="center"><input type="submit" value="登 錄" name="login"> <input type="reset" value="重 寫" name="reset"></p> </form> </body> </html>
jsp6:
<%@ page contentType="text/html; charset=GB2312" %>
<html>
<head>
<title>
接收數據
</title>
</head>
<body bgcolor="#ffffff">
<%
String user,pwd,choice;
user=request.getParameter("username");
pwd=request.getParameter("password");
choice=request.getParameter("select");
if(choice.equals("manage")){
//user select manage.
%>
<jsp:forward page="jsp7.jsp">
<jsp:param name="username" value="<%=user%>"/>
<jsp:param name="password" value="<%=pwd%>"/>
</jsp:forward>
<%
}else{
//user select statistic
%>
<jsp:forward page="jsp8.jsp">
<jsp:param name="username" value="<%=user%>"/>
<jsp:param name="password" value="<%=pwd%>"/>
</jsp:forward>
<%
}
%>
</body>
</html>
jsp7:
<%@ page contentType="text/html; charset=GB2312" %>
<html>
<head>
<title>
jsp7
</title>
</head>
<body bgcolor="#ffffff">
<h1>
這是管理頁 !!!
</h1>
<br>
<%
String user,pwd;
user=request.getParameter("username");
pwd=request.getParameter("password");
%>
username is: <%=user%><br>
password is: <%=pwd%><br>
</body>
</html>
jsp8:
<%@ page contentType="text/html; charset=GB2312" %>
<html>
<head>
<title>
jsp8
</title>
</head>
<body bgcolor="#ffffff">
<h1>
這是統計頁 !!!
</h1>
<br>
<%
String user,pwd;
//user=request.getParameter("username");
user=new String(request.getParameter("username").getBytes("ISO8859_1"));
pwd=request.getParameter("password");
%>
username is: <%=user%><br>
password is: <%=pwd%><br>
</body>
</html>
input.html
<HTML> <HEAD> <TITLE>網頁引導</TITLE> </HEAD> <BODY> <CENTER> <FONT SIZE = 5 COLOR = blue>網頁引導</FONT> </CENTER> <BR> <HR> <BR> <FORM action="sendRedirect.jsp" method=post name=form1> <P>姓名 : <INPUT name=inputName ></P> <P>E-Mail : <INPUT name=inputE_Mail ></P> <INPUT name=submit type=submit value=送出> </FORM> </BODY> </HTML
sendRedirect.jsp:
<%@ page contentType="text/html; charset=GB2312" %>
<%@ page language="java" %>
<%
String Name = request.getParameter("inputName");
String E_Mail = request.getParameter("inputE_Mail");
if(Name.equals("") || E_Mail.equals(""))//檢查Name或E_Mail是否完成資料輸入
response.sendRedirect("sendRedirect.html"); //若未完成資料輸入則將網頁導向sendRedirect.html
%>
<HTML>
<HEAD>
<TITLE>網頁引導</TITLE>
</HEAD>
<BODY>
<CENTER>
<FONT SIZE = 5 COLOR = blue>網頁引導</FONT>
</CENTER>
<BR>
<HR>
<BR>
<P>您的大名是：
<%= Name %>
</P>
<P>E-Mail帳號為：
<%= E_Mail %>
</P>
<p><a href="../jsp1.jsp">返回</a></p>
</BODY>
</HTML>
sendRedirect.html:
<HTML> <HEAD> <TITLE>網頁引導</TITLE> </HEAD> <BODY> <CENTER> <FONT SIZE = 5 COLOR = blue>網頁引導</FONT> </CENTER> <BR> <HR> <BR> <FORM action="sendRedirect.jsp" method=post name=form1> <font size=5 color=red> 你輸入的信息不完整，請重新輸入！ </font> <br> <P>姓名 : <INPUT name=inputName ></P> <P>E-Mail : <INPUT name=inputE_Mail ></P> <INPUT name=submit type=submit value=送出> </FORM> </BODY> </HTML>
希望本文所述對大家的JSP程序設計有所幫助。
