jsp小功能源碼_jsp登陸界面源代碼

㈠ jsp登陸界面源代碼

1、login.jsp文件

<%@ page language="java" contentType="text/html; charset=GB18030"

pageEncoding="GB18030"%>

<%@ page import="java.util.*" %>

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

<html>

<head>

</head>

<body>

<table>

<tr>

</tr>

<tr>

</tr>

<tr>

<td><input type="submit" value="登錄" style="background-color:pink"> <input

type="reset" value="重置" style="background-color:red"></td>

</tr>

</table>

</form>

</body>

</html>

2、judge.jsp文件

<%@ page language="java" contentType="text/html; charset=GB18030"

pageEncoding="GB18030"%>

<%@ page import="java.util.*" %>

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

<html>

<head>

</head>

<body>

request.setCharacterEncoding("GB18030");

String name = request.getParameter("userName");

String password = request.getParameter("password");

if(name.equals("abc")&& password.equals("123")) {

3、afterLogin.jsp文件

<jsp:forward page="afterLogin.jsp">

<jsp:param name="userName" value="<%=name%>"/>

</jsp:forward>

}

else {

<jsp:forward page="login.jsp"/>

}

</body>

</html>

<%@ page language="java" contentType="text/html; charset=GB18030"

pageEncoding="GB18030"%>

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

<html>

<head>

</head>

<body>

request.setCharacterEncoding("GB18030");

String name = request.getParameter("userName");

out.println("歡迎你:" + name);

</body>

</html>

(1)jsp小功能源碼擴展閱讀：

java web登錄界面源代碼：

1、Data_uil.java文件

import java.sql.*;

public class Data_uil

{

public Connection getConnection()

{

try{

Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");

}catch(ClassNotFoundException e)

{

e.printStackTrace();

}

String user="***";

String password="***";

String url="jdbc:sqlserver://127.0.0.1:1433;DatabaseName=***";

Connection con=null;

try{

con=DriverManager.getConnection(url,user,password);

}catch(SQLException e)

{

e.printStackTrace();

}

return con;

}

public String selectPassword(String username)

{

Connection connection=getConnection();

String sql="select *from login where username=?";

PreparedStatement preparedStatement=null;

ResultSet result=null;

String password=null;

try{

preparedStatement=connection.prepareStatement(sql);

preparedStatement.setString(1,username);

result=preparedStatement.executeQuery();//可執行的查詢

if(result.next())

password=result.getString("password");

}catch(SQLException e){

e.printStackTrace();

}finally

{

close(preparedStatement);

close(result);

close(connection);

}

System.out.println("找到的資料庫密碼為："+password);

return password;

}

public void close (Connection con)

{

try{

if(con!=null)

{

con.close();

}

}catch(SQLException e)

{

e.printStackTrace();

}

public void close (PreparedStatement preparedStatement)

{

try{

if(preparedStatement!=null)

{

preparedStatement.close();

}

}catch(SQLException e)

{

e.printStackTrace();

}

public void close(ResultSet resultSet)

{

try{

if(resultSet!=null)

{

resultSet.close();

}

}catch(SQLException e)

{

e.printStackTrace();

}

2、login_check.jsp:文件

<%@ page language="java" contentType="text/html; charset=utf-8"

pageEncoding="utf-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title>驗證用戶密碼</title>

</head>

<body>

<jsp:useBean id="util" class="util.Data_uil" scope="page" />

String username=(String)request.getParameter("username");

String password=(String)request.getParameter("password");

if(username==null||"".equals(username))

{

out.print("<script language='javaScript'> alert('用戶名不能為空');</script>");

response.setHeader("refresh", "0;url=user_login.jsp");

}

else

{

System.out.println("輸入的用戶名:"+username);

String passwordInDataBase=util.selectPassword(username);

System.out.println("密碼："+passwordInDataBase);

if(passwordInDataBase==null||"".equals(passwordInDataBase))

{

out.print("<script language='javaScript'> alert('用戶名不存在');</script>");

response.setHeader("refresh", "0;url=user_login.jsp");

}

else if(passwordInDataBase.equals(password))

{

out.print("<script language='javaScript'> alert('登錄成功');</script>");

response.setHeader("refresh", "0;url=loginSucces.jsp");

}

else

{

out.print("<script language='javaScript'> alert('密碼錯誤');</script>");

response.setHeader("refresh", "0;url=user_login.jsp");

}

</body>

</html>

3、loginSucces.jsp文件

<%@ page language="java" contentType="text/html; charset=utf-8"

pageEncoding="utf-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title>Insert title here</title>

</head>

<body>

</body>

</html>

4、user_login.jsp文件

<%@ page language="java" contentType="text/html; charset=utf-8"

pageEncoding="utf-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

</head>

<h1 style="color:yellow">Login</h1>

<br>

<tr >

</tr>

<tr>

</td>

</tr>

</table>

<br>

</form>

</center>

</body>

</html>

㈡緗戠珯jsp婧愮爜鏄浠涔堟剰鎬濓紵

緗戠珯JSP婧愮爜鏄涓縐嶅姩鎬佺綉欏電紪紼嬭璦錛屽畠鐨勫叏縐版槸Java Server Pages錛屽畠鍏佽稿湪Java浠ｇ爜涓宓屽叆HTML鏍囪幫紝浠ヤ究鐢ㄤ簬瀹㈡埛絝嫻忚堝櫒璁塊棶鍜屾樉紺恆侸SP婧愮爜涓昏佺敤浜庡紑鍙慦eb搴旂敤紼嬪簭鍜屼紒涓氱駭搴旂敤紼嬪簭錛屽彲浠ユ柟渚垮湴榪涜屽紑鍙戝拰緇存姢銆傚畠涓虹▼搴忓憳鎻愪緵浜嗛潪甯哥伒媧葷殑寮鍙戝鉤鍙幫紝騫跺彲浠ヨ交鏉懼湴鐢ㄤ簬鏋勫緩楂樻晥鍜屽畨鍏ㄧ殑Web搴旂敤紼嬪簭銆
JSP婧愮爜鍏鋒湁璁稿氱壒鐐瑰拰鐢ㄩ斻傞栧厛錛屽畠鎻愪緵浜嗕竴涓綾諱技浜嶩TML鐨勭紪紼嬫ā鍨嬶紝紼嬪簭鍛樺彲浠ユ洿杞繪澗鍦頒嬌鐢ㄧ粍浠躲佹爣璁板拰鑴氭湰鏉ユ瀯寤哄嶆潅鐨刉eb搴旂敤紼嬪簭銆傚叾嬈★紝JSP婧愮爜鏄鍩轟簬Java鐨勶紝榪欐剰鍛崇潃搴旂敤紼嬪簭鍙浠ュ湪涓嶅悓鐨勫鉤鍙頒笂榪愯岋紝鑰屼笖寰堝規槗娣誨姞鍜屽垹闄ゅ姛鑳姐傝繕鍙浠ヤ嬌鐢↗ava綾繪潵鎿嶄綔鏁版嵁搴撳拰鏂囦歡銆傛ゅ栵紝JSP婧愮爜涔熸敮鎸丣avaBean錛岃繖浣垮緱紼嬪簭鍛樺彲浠ユ洿杞繪澗鍦板皝瑁呮暟鎹鍜屽姛鑳戒互渚塊噸鐢ㄣ
JSP婧愮爜鐨勫簲鐢ㄨ寖鍥撮潪甯稿箍娉涳紝瀹冭鐢ㄤ簬璁稿氫紒涓氱駭搴旂敤紼嬪簭鍜屼簰鑱旂綉搴旂敤紼嬪簭鐨勬瀯寤轟腑銆備緥濡傦紝鐢靛瓙鍟嗗姟銆佺ぞ浜ょ綉緇溿佸湪綰塊摱琛屽拰淇濋櫓絳夊悇縐嶅簲鐢ㄧ▼搴忛兘浣跨敤JSP婧愮爜榪涜屽紑鍙戙傛湭鏉ワ紝闅忕潃浜戣＄畻鍜岀墿鑱旂綉鎶鏈鐨勪笉鏂鍙戝睍錛孞SP婧愮爜鐨勫簲鐢ㄥ拰闇奼備篃灝嗙戶緇澧炲姞銆傚逛簬紼嬪簭鍛樻潵璇達紝鐔熺粌鎺屾彙JSP婧愮爜灝嗘槸涓欏歸潪甯告湁鍓嶉旂殑鎶鑳姐

㈢給定JSP程序源碼如下：

a和d是表達式，所以有輸出；c和d是java程序片，要想輸出得用java的輸出，所以這里沒有輸出。
a是先加後輸出，d是先輸出後加，所以一個是2，一個是1.

㈣ jsp實現自動發送電子郵件的源代碼

package com.sinosoft.reins.pengwei;

import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

/**
* 簡單郵件（不帶附件的郵件）發送器
*/
public class SimpleMailSender {
/**
* 以文本格式發送郵件
* @param mailInfo 待發送的郵件的信息
*/
public boolean sendTextMail(MailSenderInfo mailInfo) {
// 判斷是否需要身份認證
MyAuthenticator authenticator = null;
Properties pro = mailInfo.getProperties();
if (mailInfo.isValidate()) {
// 如果需要身份認證，則創建一個密碼驗證器
authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
}
// 根據郵件會話屬性和密碼驗證器構造一個發送郵件的session
Session sendMailSession = Session.getDefaultInstance(pro,authenticator);
try {
// 根據session創建一個郵件消息
Message mailMessage = new MimeMessage(sendMailSession);
// 創建郵件發送者地址
Address from = new InternetAddress(mailInfo.getFromAddress());
// 設置郵件消息的發送者
mailMessage.setFrom(from);
// 創建郵件的接收者地址，並設置到郵件消息中
Address to = new InternetAddress(mailInfo.getToAddress());
mailMessage.setRecipient(Message.RecipientType.TO,to);
// 設置郵件消息的主題
mailMessage.setSubject(mailInfo.getSubject());
// 設置郵件消息發送的時間
mailMessage.setSentDate(new Date());
// 設置郵件消息的主要內容
String mailContent = mailInfo.getContent();
mailMessage.setText(mailContent);
// 發送郵件
Transport.send(mailMessage);
return true;
} catch (MessagingException ex) {
ex.printStackTrace();
}
return false;
}

/**
* 以HTML格式發送郵件
* @param mailInfo 待發送的郵件信息
*/
public static boolean sendHtmlMail(MailSenderInfo mailInfo){
// 判斷是否需要身份認證
MyAuthenticator authenticator = null;
Properties pro = mailInfo.getProperties();
//如果需要身份認證，則創建一個密碼驗證器
if (mailInfo.isValidate()) {
authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
}
// 根據郵件會話屬性和密碼驗證器構造一個發送郵件的session
Session sendMailSession = Session.getDefaultInstance(pro,authenticator);
try {
// 根據session創建一個郵件消息
Message mailMessage = new MimeMessage(sendMailSession);
// 創建郵件發送者地址
Address from = new InternetAddress(mailInfo.getFromAddress());
// 設置郵件消息的發送者
mailMessage.setFrom(from);
// 創建郵件的接收者地址，並設置到郵件消息中
Address to = new InternetAddress(mailInfo.getToAddress());
// Message.RecipientType.TO屬性表示接收者的類型為TO
mailMessage.setRecipient(Message.RecipientType.TO,to);
// 設置郵件消息的主題
mailMessage.setSubject(mailInfo.getSubject());
// 設置郵件消息發送的時間
mailMessage.setSentDate(new Date());
// MiniMultipart類是一個容器類，包含MimeBodyPart類型的對象
Multipart mainPart = new MimeMultipart();
// 創建一個包含HTML內容的MimeBodyPart
BodyPart html = new MimeBodyPart();
// 設置HTML內容
html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");
mainPart.addBodyPart(html);
// 將MiniMultipart對象設置為郵件內容
mailMessage.setContent(mainPart);
// 發送郵件
Transport.send(mailMessage);
return true;
} catch (MessagingException ex) {
ex.printStackTrace();
}
return false;
}
}

㈤ JSP鍋氫竴涓璁＄畻灝忕▼搴忥紝奼傛渶鍚庝竴涓璇鍙ワ紒宸叉湁婧愪唬鐮佸拰鎴愬搧鍥劇墖錛佸氨宸鏈鍚庨偅涓緇撴灉鐨勮鍙ヤ簡銆傜湡蹇冩眰瑙ｆョ敤銆

Q5Action.jsp
<%@page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%
String cashAmount = request.getParameter("cashamount");
String taxAmount = "";
if (cashAmount != null && cashAmount.length() > 0) {
int cash = Integer.parseInt(cashAmount);
if (cash > 0 && cash <= 10000) {
taxAmount += cash * 0.0205;
} else if (cash > 10000 && cash <= 30000) {
taxAmount += cash * 0.0215;
} else if (cash > 30000) {
taxAmount += cash * 0.0250;
}
}
%>
<html>
<head>
<title>ST8016 Assignment Q5</title>
<script type="text/javascript">
function verify() {
regExp = /\d+\b/;
if (!(regExp.test(thisForm.cashamount.value))) {
alert("You must enter valid amount!");
return false;}
return true;
}
</script>
</head>
<body>
<h1>Assignment 1 - Question 5</h1>
<b>Tax Calculation</b>
<br /><br />
<table border="1" cellpadding="3">
<tr bgcolor="#EEEEEE"><td align="center">Amount</td><td align="center">Tax Rate %</td></tr>
<tr><td align="center">1 - 10,000 </td><td align="center">2.05 % (0.0205)</td></tr>
<tr><td align="center">10,001 - 30,000 </td><td align="center">2.15 % (0.0215)</td></tr>
<tr><td align="center">> 30,000 </td><td align="center">2.50 % (0.0250)</td></tr>
</table>
<form name="thisForm" action="Q5Action.jsp" method=鈥漰ost鈥
onsubmit="return verify();">
Amount: <input name=cashamount size=10 value="<%=cashAmount%>"/> <br/><br/>
<input type=submit value="Calculate Tax Amount"/>
</form>
<% if (taxAmount.length() > 0) {%>
<p>Tax Amount: <b><%=taxAmount%></b></p>
<% }%>
</body>
</html>

㈥ jsp投票系統求源代碼！可以連資料庫的！

<p style=line-height: 150%><SPAN style="FONT-SIZE: 12px"><STRONG>這是用文本文件作為存儲載體的投票系統：</STRONG></SPAN>
<p style=line-height: 150%><SPAN style="FONT-SIZE: 12px"><STRONG>vote.java:</STRONG></SPAN>
<SPAN style="FONT-SIZE: 12px"><STRONG></STRONG> <p style=line-height: 150%>
// Java Document
package vote;
import java.io.*;
import java.util.*;
public class vote extends Object
{
public String filePath="";
public int n;
private File voteFile;
private BufferedReader fileRead;
private PrintWriter fileWrite;
public String systemMessage="";
private String voteStr[]=new String[10];
public int voteNum[]=new int[10];
public void createFile()
throws FileNotFoundException
{
voteFile=new File(filePath);
if(!voteFile.exists())
{
fileWrite=new PrintWriter(new FileOutputStream(filePath));
for(int i=0;i<n;i++) fileWrite.println("0");
fileWrite.close();
}
}
public void writeFile()
throws FileNotFoundException
{
fileWrite=new PrintWriter(new FileOutputStream(filePath));
for(int i=0;i<n;i++)
{
fileWrite.println(voteNum[i]);
}
fileWrite.close();
}
public void readFile()
throws FileNotFoundException
{
fileRead=new BufferedReader(new FileReader(filePath));
for(int i=0;i<n;i++)
{
try
{voteStr[i]=fileRead.readLine();
}
catch(IOException f)
{
voteStr[i]="0";}
voteNum[i]=Integer.parseInt(voteStr[i]);
}
try
{
fileRead.close();
}
catch(IOException d)
{
systemMessage=d.toString();
}
}
}
<p style=line-height: 150%><SPAN style="LINE-HEIGHT: 15pt"><SPAN style="FONT-SIZE: 12px"><STRONG>vote.jsp:</STRONG>

<%@ page contentType="text/html; charset=gb2312" language="java" errorPage="" %>
<%@ page import="java.util.*"%>
<%@ page import="java.lang.*"%>
<%@ page import="java.io.*"%>
<jsp:useBean id="vote" scope="request" class="vote.vote"/>
<%
String vote1=request.getParameter("lang");
vote.n=4;
vote.filePath="vote.txt";
vote.createFile();
vote.readFile();
if(vote1.compareTo("0")==0)
vote.voteNum[0]++;
if(vote1.compareTo("1")==0)
vote.voteNum[1]++;
if(vote1.compareTo("2")==0)
vote.voteNum[2]++;
if(vote1.compareTo("3")==0)
vote.voteNum[3]++;
vote.writeFile();
%>
<script language="javascript">
alert("感謝你投了寶貴的一票");
self.location="index.jsp";
</script></SPAN></SPAN>
<p style=line-height: 150%><STRONG> </STRONG><SPAN style="LINE-HEIGHT: 15pt"><SPAN style="FONT-SIZE: 12px"><STRONG>see.jsp:</STRONG>

<%@ page contentType="text/html; charset=gb2312" language="java" errorPage="" %>
<%@ page import="java.util.*"%>
<%@ page import="java.lang.*"%>
<%@ page import="java.io.*"%>
<jsp:useBean id="vote" scope="request" class="vote.vote"/>
<%
String vote1=request.getParameter("lang");
vote.n=4;
vote.filePath="vote.txt";
vote.createFile();
vote.readFile();
int total=0;
float voteFlo[]=new float[5];
for(int i=0;i<4;i++) total+=vote.voteNum[i];
for(int i=0;i<4;i++) voteFlo[i]=150*((float)vote.voteNum[i]/(float)total);
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>查看調查</title>
<link href="t1.css" rel="stylesheet" type="text/css">
</head>
<body>

<table width="30%" border="0" class="t1">
<tr>
<td colspan="2"><div align="center">調查結果</div></td>
</tr>
<tr>
<td width="18%">JSP</td>
<td width="82%"><img src="bar.gif" width=<%=voteFlo[0]%> height=8> <%=vote.voteNum[0]%></td>
</tr>
<tr>
<td>ASP</td>
<td><img src="bar.gif" width=<%=voteFlo[1]%> height=8> <%=vote.voteNum[1]%></td>
</tr>
<tr>
<td>PHP</td>
<td><img src="bar.gif" width=<%=voteFlo[2]%> height=8> <%=vote.voteNum[2]%></td>
</tr>
<tr>
<td>其他</td>
<td><img src="bar.gif" width=<%=voteFlo[3]%> height=8> <%=vote.voteNum[3]%></td>
</tr>
<tr>
<td colspan="2"><div align="center"><a href="javascript:window.close();">關閉窗口</a></div></td>
</tr>
</table>
</body>
</html>
</SPAN></SPAN>
<p style=line-height: 150%><SPAN style="LINE-HEIGHT: 15pt"><SPAN style="FONT-SIZE: 12px"><SPAN style="LINE-HEIGHT: 15pt"><SPAN style="FONT-SIZE: 12px"><STRONG>index.jsp:</STRONG>
</SPAN></SPAN>
</SPAN></SPAN> <p style=line-height: 150%><SPAN style="LINE-HEIGHT: 15pt"><SPAN style="FONT-SIZE: 12px"><%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>投票</title>
<link href="t1.css" rel="stylesheet" type="text/css">
</head>
<script language="javascript">
function cw()
{window.open("see.jsp","mywindow","toolbar=no,left=150,top=200,width=270,height=350,menubar=no,systemMenu=no");
}
</script>
<body>
<table width="15%" height="250" align="left">
<tr>
<td><form name="form1" method="post" action="vote.jsp">
<table width="100%" height="250" border="1" align="center" bordercolor="#9966CC" class="t1">
<tr>
<td><div align="left">你所使用的開發語言</div></td>
</tr>
<tr>
<td><input type="radio" name="lang" value="0">
JSP</td>
</tr>
<tr>
<td><input type="radio" name="lang" value="1">
ASP</td>
</tr>
<tr>
<td><input type="radio" name="lang" value="2">
PHP</td>
</tr>
<tr>
<td><input type="radio" name="lang" value="3">
其他 </td>
</tr>
<tr>
<td><div align="center">
<input name="vote" type="image" src="poll.gif" width="40" height="20" border="0">
<a href="javascript:cw()"><img src="see.gif" width="40" height="20" border="0"></a></div></td>
</tr>
</table>
</form></td>
</tr>
</table>
</body>
</html>
</SPAN></SPAN></SPAN>

㈦ JSP 源代碼編寫表單操作

<%@ page language="java" import="java.util.*" pageEncoding="GB2312"%>
<html>
<body>

<form action="" method="post">
第一個操作數：<input type="text" name="one"><br>
運算符：<select name="op">
<option value="+">+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select><br>
第二個操作數：<input type="text" name="two"><br>
<input type="submit" value="提交">
</form>
<hr>
<%
int ones=0;
int twos=0;
double threes=0.0;
String one=request.getParameter("one");
ones=Integer.parseInt(one);
String op=request.getParameter("op");
String two=request.getParameter("two");
twos=Integer.parseInt(two);
out.println(ones);
out.println(op);
out.println(twos);
out.println("=");
if(op=="+")
{
threes=(double)ones+twos;
out.println(threes);
}
else if(op.equals("-"))
{
threes=(double)ones-twos;
out.println(threes);
}
else if (op.equals("/"))
{
if(twos!=0)
{
threes=(double)ones/twos;
out.println(threes);
}
else
out.println("輸入的數據有誤");
}
else
{
threes=(double)ones*twos;
out.println(threes);
}

%>
</body>
</html>

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