WAP（无限通讯协议）是在数字移动电话，PDA和计算机之间进行通讯的一种标准。因此构建WAP邮件发送服务器将具有很广泛的应用前景和很高的商业价值。下面就是一个使用Java编写的Servlet程序，通过一些简单的设置，你就可以使用它从WAP手机或任何支持WML的PDA上发送Email了。
用法是：
http://your_host/servlet/WapMailer?template_file
解释：
Template文件是一个描述邮件设置和模板的文本文件。你可以在这个文件中设置SMTP服务器的域名和端口，以及信件的相关内容的参数。根据Template文件设置的信息，WAP服务器将动态生成相应
的WML页面。
在描述你的信件的时候，也可以使用变量： $from,$to, $subject,$body.这些变量会被提交的表单的相应内容代替。当你在WML中提交表单时，邮件也将动态生成。你也可以粘贴一些文件，比如公司的价目表、你的履历表等等。
Template文件可以采用非常自由的格式，但是每一个参数的描述都必须另起一行。
现把参数列在下面：
Mailhost：SMTP服务器名，必须填写。
PORT：SMTP服务器端口。
Domain: 域名，必须填写。
From: 发信人地址。
T 收信人地址。
Subject: 邮件主题。
Body: 邮件内容。
Attach: 设置粘贴的文件列表。
Encoding: 字符集编码，默认值为ISO-8859-1。
例如：最简单的设置文件：
Mailhost:smtp.abcdef.com
Domain:abcdef.com
Port:25
From:$from
T$to
Subject:$subject
Body:$body
又如：对于某些短消息服务，可以描述To为T$to@your_service_host ，并且在邮件表单收信人地址中仅写对方的手机号码。你还可以给任何域设置常量值，如：Tsupport@abcdef.com，在生成的WML表单中这个域就将被省略。
在描述body参数时，也可以使用现成的文本文件，方法是在body中加入： $file=path_to_some_text_file ，该文件的内容将被加进信中。当你设置好粘贴文件后，你就可以使用文件列表了。文件名应该用逗号分隔开。
需注意：由于手机及PDA中的WAP是全球应用的，因此标准字符集编码采用ISO-8859-1，而我们平时使用汉字是用GB2312编码，不经过内码转化将会出现乱码，造成手机用户无法阅读，因此需要把编码设置成GB2312。
源程序:WapMailer.java,将其编译成".class"文件
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class WapMailer extends HttpServlet
{
private Hashtable getTemplate(String s)
{
Hashtable hashtable = (Hashtable)cfgs.get(s);
if(hashtable == null)
{
hashtable = new Hashtable();
readTemplateFile(s, hashtable);
cfgs.put(s, hashtable);
}
else
{
File file = new File(s);
String s1 = (String)hashtable.get("edt");
String s2 = String.valueOf(file.lastModified());
if(!s1.equals(s2))
{
hashtable = new Hashtable();
readTemplateFile(s, hashtable);
cfgs.remove(s);
cfgs.put(s, hashtable);
}
}
return hashtable;
}
public void init(ServletConfig servletconfig)
throws ServletException
{
super.init(servletconfig);
NEWLINE = System.getProperty("line.separator");
cfgs = new Hashtable();
System.out.println("WAP Mailer");
}
public void doGet(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
throws ServletException, IOException
{
boolean flag = true;
boolean flag1 = true;
boolean flag2 = true;
boolean flag3 = true;
String s5 = HttpUtils.getRequestURL(httpservletrequest).toString();
int i;
if((i = s5.indexOf("?")) > 0)
s5 = s5.substring(0, i);
String s = httpservletrequest.getQueryString();
httpservletresponse.setContentType("text/vnd.wap.wml");
PrintWriter printwriter = httpservletresponse.getWriter();
printwriter.println("");
if(s == null)
{
printwriter.println("");
printwriter.println("");
printwriter.println("
");
printwriter.println("WapMailer: Can't read template file");
printwriter.println("
");
printwriter.println("");
printwriter.println("");
printwriter.flush();
printwriter.close();
return;
}
Hashtable hashtable = getTemplate(s);
if(hashtable.size() == 0)
{
printwriter.println("");
printwriter.println("");
printwriter.println("
");
printwriter.println("WapMailer: Can't read template file");
printwriter.println("
");
printwriter.println("");
printwriter.println("");
printwriter.flush();
printwriter.close();
return;
}
flag = usedParameter("$from", hashtable);
flag1 = usedParameter("$to", hashtable);
flag2 = usedParameter("$subject", hashtable);
flag3 = usedParameter("$body", hashtable);
String s1;
if((s1 = (String)hashtable.get("FROM")) == null)
s1 = "";
else
if(s1.indexOf("$") >= 0)
s1 = "";
String s2;
if((s2 = (String)hashtable.get("TO")) == null)
s2 = "";
else
if(s2.indexOf("$") >= 0)
s2 = "";
String s3;
if((s3 = (String)hashtable.get("SUBJECT")) == null)
s3 = "";
else
if(s3.indexOf("$") >= 0)
s3 = "";
String s4;
if((s4 = (String)hashtable.get("BODY")) == null)
s4 = "";
else
if(s4.indexOf("$") >= 0)
s4 = "";
printwriter.println("");
printwriter.println("");
printwriter.println("");
printwriter.println("");
if(flag)
printwriter.println("");
else
printwriter.println("");
if(flag1)
printwriter.println("");
else
printwriter.println("");
if(flag2)
printwriter.println("");
else
printwriter.println("");
if(flag3)
printwriter.println("");
else
printwriter.println("");
printwriter.println("");
printwriter.println("");
if(flag)
printwriter.println("
From:
");
if(flag1)
printwriter.println("
T emptyok=/"false/"/>
");
if(flag2)
printwriter.println("
Subject: "/" emptyok=/"true/"/>
");
if(flag3)
printwriter.println("
Message: "/" emptyok=/"false/"/>
");
printwriter.println("");
printwriter.println("");
printwriter.flush();
printwriter.close();
}
public void doPost(HttpServletRequest httpservletrequest, HttpServletResponse
httpservletresponse)
throws ServletException, IOException
{
PrintWriter printwriter = null;
Hashtable hashtable = null;
Hashtable hashtable1 = null;
String s = httpservletrequest.getQueryString();
httpservletresponse.setContentType("text/vnd.wap.wml");
printwriter = httpservletresponse.getWriter();
printwriter.println("");
if(s == null)
{
printwriter.println("");
printwriter.println("");
printwriter.println("
");
printwriter.println("WapMailer: Can't read template file");
printwriter.println("
");
printwriter.println("");
printwriter.println("");
printwriter.flush();
printwriter.close();
return;
}
hashtable1 = getTemplate(s);
if(hashtable1.size() == 0)
{
printwriter.println("");
printwriter.println("");
printwriter.println("
");
printwriter.println("WapMailer: Can't read template file");
printwriter.println("
");
printwriter.println("");
printwriter.println("");
printwriter.flush();
printwriter.close();
return;
}
if(hashtable1.get("PORT") == null || hashtable1.get("FROM") == null ||
hashtable1.get("TO") == null || hashtable1.get("MAILHOST") == null ||
hashtable1.get("DOMAIN") == null)
{
printwriter.println("");
printwriter.println("");
printwriter.println("
");
printwriter.println("WapMailer: Can't send mail. Check template file");
printwriter.println("
");
printwriter.println("");
printwriter.println("");
printwriter.flush();
printwriter.close();
return;
}
hashtable = new Hashtable();
String s1;
for(Enumeration enumeration = httpservletrequest.getParameterNames();
enumeration.hasMoreElements(); hashtable.put(s1.toUpperCase(),
decodeString(httpservletrequest.getParameter(s1),
httpservletrequest.getCharacterEncoding(), (String)hashtable1.get("ENCODING"))))
s1 = (String)enumeration.nextElement();
boolean flag = letterToNet(hashtable, hashtable1);
printwriter.println("");
printwriter.println("");
printwriter.println("
");
if(flag)
printwriter.println("WapMailer: your message has been send");
else
printwriter.println("WapMailer: Can't send mail");
printwriter.println("
");
printwriter.println("");
printwriter.println("");
printwriter.flush();
printwriter.close();
}
public String getServletInfo()
{
return "WapMailer mailt waynezheng@chinaren.com";
}
private boolean letterToNet(Hashtable hashtable, Hashtable hashtable1)
{
smtpMail smtpmail = new smtpMail();
String s1 = prepareString((String)hashtable1.get("MAILHOST"), hashtable);
String s2 = prepareString((String)hashtable1.get("DOMAIN"), hashtable);
int i;
try
{
i = Integer.parseInt(prepareString((String)hashtable1.get("PORT"),
hashtable));
}
catch(Exception _ex)
{
return false;
}
if(s1 == null)
return false;
String s;
String s3;
if((s = (String)hashtable1.get("FROM")) == null)
s3 = (String)hashtable.get("FROM");
else
if(s.indexOf("$") < 0)
s3 = (String)hashtable.get("FROM");
else
s3 = prepareString(s, hashtable);
String s4;
if((s = (String)hashtable1.get("TO")) == null)
s4 = (String)hashtable.get("TO");
else
if(s.indexOf("$") < 0)
s4 = (String)hashtable.get("TO");
else
s4 = prepareString(s, hashtable);
if(smtpmail.open(s1, i) != 1)
return false;
smtpmail.setDomain(s2);
smtpmail.setFrom(s3);
smtpmail.setTo(s4);
if((s = (String)hashtable1.get("SUBJECT")) == null)
s = (String)hashtable.get("SUBJECT");
else
if(s.indexOf("$") < 0)
s = (String)hashtable.get("SUBJECT");
else
s = prepareString(s, hashtable);
smtpmail.addHeader("Subject", s);
if((s = (String)hashtable1.get("CC")) == null)
s = "";
else
s = prepareString(s, hashtable);
if(s.length() > 0)
smtpmail.addHeader("Cc", s);
if((s = (String)hashtable1.get("BODY")) == null)
s = (String)hashtable.get("BODY");
else
if(s.indexOf("$") < 0)
s = (String)hashtable.get("BODY");
else
s = prepareString(insertFiles(s), hashtable);
smtpmail.addData(s);
if((s = (String)hashtable1.get("ATTACH")) != null)
{
s = prepareString(s, hashtable);
for(StringTokenizer stringtokenizer = new StringTokenizer(s, " ,");
stringtokenizer.hasMoreTokens(); smtpmail.addAttachment(s))
s = stringtokenizer.nextToken();
}
if(smtpmail.transmit() != 1)
{
return false;
}
else
{
smtpmail.close();
return true;
}
}
private String insertFiles(String s)
{
String s1 = s.toUpperCase();
int i;
if((i = s1.indexOf("$FILE=")) < 0)
return s;
String s2;
if(i == 0)
s2 = "";
else
s2 = s.substring(0, i) + NEWLINE;
s1 = s.substring(i + "$FILE=".length());
i = s1.indexOf(NEWLINE);
String s3;
if(i < 0)
{
s3 = "";
}
else
{
s3 = s1.substring(i + NEWLINE.length());
s1 = s1.substring(0, i);
}
if(s1.startsWith("/""))
s1 = s1.substring(1);
if(s1.endsWith("/""))
s1 = s1.substring(0, s1.length() - 1);
try
{
BufferedReader bufferedreader = new BufferedReader(new
InputStreamReader(new FileInputStream(s1)));
while((s1 = bufferedreader.readLine()) != null)
s2 = s2 + s1 + NEWLINE;
bufferedreader.close();
}
catch(Exception _ex)
{
return s;
}
return s2 + insertFiles(s3);
}
private String prepareString(String s, Hashtable hashtable)
{
int i = s.indexOf("$");
String s1 = "";
if(i < 0 || i == s.length() - 1)
return s;
for(StringTokenizer stringtokenizer = new StringTokenizer(s, "
,/t;:!@#%^~&*()-+_=|///?<>" + NEWLINE, true); stringtokenizer.hasMoreTokens();)
{
String s2 = stringtokenizer.nextToken();
String s3;
if(s2.startsWith("$"))
{
if(s2.length() == 1)
s1 = s1 + s2;
else
if((s3 = (String)hashtable.get(s2.substring(1).toUpperCase())) != null)
s1 = s1 + s3;
else
s1 = s1 + s2;
}
else
{
s1 = s1 + s2;
}
}
return s1;
}
private boolean usedParameter(String s, Hashtable hashtable)
{
for(Enumeration enumeration = hashtable.keys(); enumeration.hasMoreElements();)
{
String s1 = (String)hashtable.get((String)enumeration.nextElement());
if(s1.indexOf(s) >= 0)
return true;
}
return false;
}
private void readTemplateFile(String s, Hashtable hashtable)
{
String s4 = "";
boolean flag = false;
try
{
BufferedReader bufferedreader = new BufferedReader(new
InputStreamReader(new FileInputStream(s)));
String s1;
while((s1 = bufferedreader.readLine()) != null)
{
s1 = s1.trim();
if(s1.length() > 0)
{
String s3 = s1.toUpperCase();
if(s3.startsWith("PORT:"))
{
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
flag = false;
s4 = "";
hashtable.remove("PORT");
hashtable.put("PORT", s1.substring("PORT:".length()).trim());
}
else
if(s3.startsWith("DOMAIN:"))
{
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
flag = false;
s4 = "";
hashtable.remove("DOMAIN");
hashtable.put("DOMAIN",
s1.substring("DOMAIN:".length()).trim());
}
else
if(s3.startsWith("T"))
{
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
flag = false;
s4 = "";
hashtable.remove("TO");
hashtable.put("TO", s1.substring("T".length()).trim());
}
else
if(s3.startsWith("CC:"))
{
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
flag = false;
s4 = "";
hashtable.remove("CC");
hashtable.put("CC", s1.substring("CC:".length()).trim());
}
else
if(s3.startsWith("SUBJECT:"))
{
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
flag = false;
s4 = "";
hashtable.remove("SUBJECT");
hashtable.put("SUBJECT",
s1.substring("SUBJECT:".length()).trim());
}
else
if(s3.startsWith("MAILHOST:"))
{
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
flag = false;
s4 = "";
hashtable.remove("MAILHOST");
hashtable.put("MAILHOST",
s1.substring("MAILHOST:".length()).trim());
}
else
if(s3.startsWith("FROM:"))
{
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
flag = false;
s4 = "";
hashtable.remove("FROM");
hashtable.put("FROM", s1.substring("FROM:".length()).trim());
}
else
if(s3.startsWith("REPLY:"))
{
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
flag = false;
s4 = "";
hashtable.remove("REPLY");
hashtable.put("REPLY", s1.substring("REPLY:".length()).trim());
}
else
if(s3.startsWith("ATTACH:"))
{
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
flag = false;
s4 = "";
hashtable.remove("ATTACH");
hashtable.put("ATTACH",
s1.substring("ATTACH:".length()).trim());
}
else
if(s3.startsWith("ENCODING:"))
{
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
flag = false;
s4 = "";
hashtable.remove("ENCODING");
hashtable.put("ENCODING",
s1.substring("ENCODING:".length()).trim());
}
else
if(s3.startsWith("BODY:"))
{
hashtable.remove("BODY");
flag = true;
s4 = s1.substring("BODY:".length()).trim();
}
else
if(flag)
s4 = s4 + NEWLINE + s1;
}
else
if(flag)
s4 = s4 + NEWLINE;
}
bufferedreader.close();
File file = new File(s);
hashtable.put("edt", String.valueOf(file.lastModified()));
}
catch(Exception _ex) { }
String s2;
if((s2 = (String)hashtable.get("PORT")) != null)
try
{
int i = Integer.parseInt(s2);
if(i <= 0)
hashtable.remove("PORT");
}
catch(Exception _ex)
{
hashtable.remove("PORT");
}
if((s2 = (String)hashtable.get("DOMAIN")) != null && s2.length() == 0)
hashtable.remove("DOMAIN");
if((s2 = (String)hashtable.get("REPLY")) != null && s2.length() == 0)
hashtable.remove("REPLY");
if((s2 = (String)hashtable.get("FROM")) != null && s2.length() == 0)
hashtable.remove("FROM");
if((s2 = (String)hashtable.get("TO")) != null && s2.length() == 0)
hashtable.remove("TO");
if((s2 = (String)hashtable.get("CC")) != null && s2.length() == 0)
hashtable.remove("CC");
if(hashtable.get("PORT") == null)
hashtable.put("PORT", "25");
if(hashtable.get("DOMAIN") == null)
hashtable.put("DOMAIN", "localhost");
if(hashtable.get("ENCODING") == null)
hashtable.put("ENCODING", "ISO-8859-1");
if(flag)
{
hashtable.remove("BODY");
hashtable.put("BODY", s4);
}
}
private String decodeString(String s, String s1, String s2)
{
String s3;
try
{
s3 = new String(s.getBytes(s1 != null ? s1 : "ISO-8859-1"), s2);
}
catch(Exception _ex)
{
s3 = s;
}
return s3;
}
public WapMailer()
{
}
private static final String MAILHOST = "MAILHOST";
private static final String PORT = "PORT";
private static final String DOMAIN = "DOMAIN";
private static final String FROM = "FROM";
private static final String TO = "TO";
private static final String CC = "CC";
private static final String SUBJECT = "SUBJECT";
private static final String BODY = "BODY";
private static final String ATTACH = "ATTACH";
private static final String REPLY = "REPLY";
private static final String FILE = "FILE";
private static final String EDITED = "edt";
private static final String ENCODING = "ENCODING";
private static final String DEFDOMAIN = "localhost";
private static final String DEFENCODING = "ISO-8859-1";
private static final String DEFPORT = "25";
private static String NEWLINE = "/n";
private static Hashtable cfgs;
}
