我们每次发信都要先进入邮箱，然后才能写信．突然一天我的邮箱密码丢了，我进不了邮件了，那可不可以不进邮箱就能给朋友发信呢？现在我告诉你：这是可以的！
此程序的功能就在此，你可以把它用在论坛上，打开这个程序窗口发送邮件，你也可以把它放在你的桌面上，随心所欲地发送邮件．当然作为一个程序员，你还可以把它拿过来分析一下，看有没有可学知识． 由于发送HTML类型邮件的设计思想和此类似，所以不在一一列出．程序源码则分别列出． 一．流程思路：
 二．程序源码： （１） 发送文本类型信件．这种是接收者收到后打开信箱后直接显示在邮件正文的．它主要有两个程序: mailform.html and sendmail.jsp，另外三个程序为提交成功和不成功及发生内部错误的处理程序． mailform.html用来输入用户信息，然后提交表单给sendmail.jsp sendmail.jsp 用来处理接收信息并处理信息，最后发送邮件．
<%--mailform.html 的源代码--%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>mailform.html</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<form name="form1" method="post" action="sendmail.jsp">
<p align="center">填写邮件内容</p>
<div align="center">
<table width="75%" border="1">
<tr>
<td><div align="center">收件人</div></td>
<td><div align="center">
<input name="to" type="text" id="to" size="30" maxlength="30">
</div></td>
</tr>
<tr>
<td><div align="center">发件人</div></td>
<td><div align="center">
<input name="from" type="text" id="from" size="30" maxlength="30">
</div></td>
</tr>
<tr>
<td><div align="center">抄送</div></td>
<td><div align="center">
<input name="cc" type="text" id="cc" size="30" maxlength="100">
</div></td>
</tr>
<tr>
<td><div align="center">暗送</div></td>
<td><div align="center">
<input name="bcc" type="text" id="bcc" size="30" maxlength="100">
</div></td>
</tr>
<tr>
<td><div align="center">主题</div></td>
<td><div align="center">
<input name="subject" type="text" id="subject" size="30" maxlength="30">
</div></td>
</tr>
<tr>
<td colspan="2"><div align="center">
<textarea name="body" cols="40" rows="10" id="body"></textarea>
</div></td>
</tr>
<tr>
<td colspan="2"><div align="center">
<input type="submit" name="Submit" value="发送">
<input name="Reset" type="submit" id="Reset" value="清空">
</div></td>
</tr>
</table>
</div>
<p align="center"> </p>
</form>
<p align="center"> </p>
</body>
</html> |
<%--sendmail.jsp 的源代码--%>
<%@page contentType="text/html;charset=gb2312"%>
<%@page errorPage="errpage.jsp"%>
<%@page import="java.util.*"%>
<%@page import="javax.mail.*"%>
<%@page import="javax.mail.internet.*"%>
<%@page import="javax.activation.*"%>
<html>
<head>
<title>sendmail.jsp</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<%
//邮件服务器的IP地址,注意此时使用的是SMTP 邮件服务器
//String host="202.102.240.76";
//获取用户信息
String to=request.getParameter("to");
String from=request.getParameter("from");
String cc=request.getParameter("cc");
String bcc=request.getParameter("bcc");
//结合本程序的第一句,共同起显示汉字体的功能
String subject=request.getParameter("subject");
subject = new java.lang.String(subject.getBytes("iso-8859-1"));
//以上方法等同于以下两句,原理相同
//byte[] subjectTemp=request.getParameter("subject").getBytes("ISO8859_1");
//String subject=new String(subjectTemp);
byte[] messageTextTemp=request.getParameter("body").getBytes("ISO8859_1");
String messageText= new String(messageTextTemp);
boolean sessionDebug = false;
//验证所填写的邮件是否正确
if((to.trim().indexOf("@")==-1)||(to.trim().length()<5)){
%>
<jsp:forward page="err.jsp"/>
<%
}
if((from.trim().indexOf("@")==-1)||(from.trim().length()<5)){
%>
<jsp:forward page="err.jsp"/>
<%
}
//获得系统属性对象,用下两句的任一句均可
//Properties props = System.getProperties();
Properties props=new Properties();
//设置SMTP主机
//以下一句是对任意的SMTP 邮件服务器均可,并且有了这一句,将不用设置传输协议了
props.put("mail.smtp.host", "smtp.jspinsider.com");
//这样将确定接收方的邮件服务器主机,
//props.put("mail.host",host);
//设置邮件传输协议方式
//props.put("mail.transport.protocol","smtp");
//获取邮件会话对象
Session mailSession = Session.getDefaultInstance(props,null);
mailSession.setDebug(sessionDebug);
try{
//创建MIME邮件对象
Message msg = new MimeMessage(mailSession);
//设置发信人
msg.setFrom(new InternetAddress(from));
//设置收信人
InternetAddress[] addressTo = {new InternetAddress(to)};
msg.setRecipients(Message.RecipientType.TO,addressTo);
//设置抄送人
if(cc.trim().length()!=0){
InternetAddress[] addressCc = {new InternetAddress(cc)};
msg.setRecipients(Message.RecipientType.CC,addressCc);
}
//设置暗送人
if(bcc.trim().length()!=0){
InternetAddress[] addressBcc = {new InternetAddress(bcc)};
msg.setRecipients(Message.RecipientType.BCC,addressBcc);
}
msg.setSubject(subject);
msg.setSentDate(new Date());
msg.setText(messageText);
//发送邮件
Transport.send(msg);
}
catch(Exception ex){
out.println("sending failed!");
}
%>
<jsp:forward page="sendok.jsp"/>
</body>
</html> |
<%-- sendok.jsp发送成功的页面--%>
<%@ page contentType="text/html;charset=gb2312"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>sendok.jsp</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<center>
<h4>发送成功! </h4>
<table cellspacing="2" cellpadding="2" border="1">
<tr>
<td> 收件人</td><td><%=request.getParameter("to")%></td>
</tr>
<tr>
<td>主题:</td><td><%byte[]
subjectTemp=request.getParameter("subject").getBytes("ISO8859_1");
String subject =new String(subjectTemp);
out.println(subject);
%>
</tr>
<tr>
<td colspan = "2" align=center><a href ="mailform.html" style="color:rgb(ff,0,0)">
继续发送</a>
</td>
</tr>
</table>
</center>
</body>
</html> |
<%- errpage.jsp发生内部错误的程序---%>
<html>
<head>
<title>errpage.jsp</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
出现内部错误
</body>
</html> |
<%-- err.jsp 输入有误时的错误提示----%>
<html>
<head>
<title>err.jsp</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
输入非法
</body>
</html> |
（２）HTML类型信件．这种邮件是作为附件接收，收到后把附件打开时是HTML文件．你写入的信件正文在附件的HTML文件里．这个程序主要有两个文件form.html and send.jsp ．form.html 用来输入信息表单，send.jsp用作接收信息并处理信息和发送邮件．但这个程序要用到java程序来处理发送．HTML.java 用作发送邮件时调用的，StringDataSource.Java用作汉字显示处理时调用的，注意使用这两个文件时要放在对应的WEB-INF/classes 文件夹下．
<!--form.html-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>mailform.html</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<form name="form1" method="post" action="send.jsp">
<p align="center">填写邮件内容</p>
<div align="center">
<table width="75%" border="1">
<tr>
<td><div align="center">SMTP主机：</div></td>
<td><div align="center">
<input tabindex="text" name="smtp" size="30">
</div></td>
</tr>
<tr>
<td><div align="center">收件人</div></td>
<td><div align="center">
<input name="to" type="text" id="to" size="30" maxlength="30">
</div></td>
</tr>
<tr>
<td><div align="center">发件人</div></td>
<td><div align="center">
<input name="from" type="text" id="from" size="30" maxlength="30">
</div></td>
</tr>
<tr>
<td><div align="center">抄送</div></td>
<td><div align="center">
<input name="cc" type="text" id="cc" size="30" maxlength="100">
</div></td>
</tr>
<tr>
<td><div align="center">暗送</div></td>
<td><div align="center">
<input name="bcc" type="text" id="bcc" size="30" maxlength="100">
</div></td>
</tr>
<tr>
<td><div align="center">主题</div></td>
<td><div align="center">
<input name="subject" type="text" id="subject" size="30" maxlength="30">
</div></td>
</tr>
<tr>
<td colspan="2"><div align="center">
<textarea name="body" cols="40" rows="10" id="body"></textarea>
</div></td>
</tr>
<tr>
<td colspan="2"><div align="center">
<input type="submit" name="Submit" value="发送">
<input name="Reset" type="submit" id="Reset" value="清空">
</div></td>
</tr>
</table>
</div>
<p align="center"> </p>
</form>
<p align="center"> </p>
</body>
</html> |
<!—send.jsp-->
<%@page errorPage="errpage.jsp"%>
<%
//变量声明
java.lang.String smtp,from,to,cc,bcc,subject,body;
//获得用户输入数据
smtp = request.getParameter("smtp");
from = request.getParameter("from");
to = request.getParameter("to");
cc = request.getParameter("cc");
bcc = request.getParameter("bcc");
subject = request.getParameter("subject");
if(subject!=null){
subject = new java.lang.String(subject.getBytes("iso-8859-1"));
}
body = request.getParameter("body");
//发送留言
mymail.mail.HTML.send(smtp,from,to,cc,bcc,subject,body);
%>
<jsp:forward page="sendok.jsp"/>
/*HTML.java*/
/*
* 功能:用作调用send() 方法来发送邮件
*
* mymail.mail.HTML.Java
* package mymail.mail;
*/
public final class HTML
{
public static void send(
java.lang.String smtp, /*SMTP主机地址*/
java.lang.String from, /*发信人*/
java.lang.String to, /*收信人*/
java.lang.String cc, /*抄送人*/
java.lang.String bcc, /*暗送人*/
java.lang.String subject, /*主题*/
java.lang.String body /*内容*/
) throws java.lang.Exception{
//变量声明
java.util.Properties props; //系统属性
javax.mail.Session mailSession; //邮件会话对象
javax.mail.internet.MimeMessage mimeMsg; //MIME邮件对象
//设置系统属性
props = java.lang.System.getProperties(); //获得系统属性对象
props.put("mail.smtp.host",smtp); //设置SMTP主机
//获得邮件会话对象
mailSession = javax.mail.Session.getDefaultInstance(props,null);
//创建MIME邮件对象
mimeMsg = new javax.mail.internet.MimeMessage(mailSession);
//设置发信人
mimeMsg.setFrom(new javax.mail.internet.InternetAddress(from));
//设置收信人
if(to!=null)
{
mimeMsg.setRecipients(javax.mail.Message.RecipientType.TO,javax.mail.
internet.InternetAddress.parse(to));
}
//设置抄送人
if(cc!=null)
{
mimeMsg.setRecipients(javax.mail.Message.RecipientType.CC,javax.mail.
internet.InternetAddress.parse(cc));
}
//设置暗送人
if(bcc!=null)
{
mimeMsg.setRecipients
(javax.mail.Message.RecipientType.BCC,javax.mail.internet.InternetAddress.parse(bcc));
}
//设置邮件主题
//mimeMsg.setSubject(subject);
mimeMsg.setSubject(subject,"gb2312");
//设置邮件内容，将邮件body部分转化为HTML格式
mimeMsg.setDataHandler
(new javax.activation.DataHandler(new mymail.jaf.StringDataSource (body,"text/html")));
//发送邮件
javax.mail.Transport.send(mimeMsg);
}
}
/* StringDataSource.Java */
/*
* 功能:将文本型转化为HTML 格式
* 注意引入的 jaf包
*
*/
package mymail.jaf;
//mymail.jaf.StringDataSource.Java
//import javax.activation.*;
public class StringDataSource implements javax.activation.DataSource{
private java.lang.String data;
private java.lang.String type;
public StringDataSource(java.lang.String data,java.lang.String type)
{
this.data = data;
this.type = type;
}
public java.io.InputStream getInputStream() throws java.io.IOException
{
return new java.io.StringBufferInputStream(data);
}
public java.io.OutputStream getOutputStream() throws java.io.IOException
{
throw new java.io.IOException("it does not support this method now!");
}
public java.lang.String getContentType(){
return type;
}
public java.lang.String getName(){
return " mymail ";
}
} |
三．说明：
１．用此程序前要在编译环境的lib 下有javax.mail包和javax.activation 包．并且设置CLASSPATH．
２．做第一个程序时直接把五个程序放入jsp 根目录下即可．
３．做第二个程序时须在根目录下新建一个名为mymail的文件夹，否则使用到的两个java 文件不要打包． |