javamail api发邮件

Try it:(To http://jakarta.apache.org download TOmcat4.* Version and Install)
1.C:\tmp\test Directory Create a class SendMailServlet.javaimport javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import sun.net.smtp.*;public class SendMailServlet extends HttpServlet {
  public static String MAIL_FROM = "from";
  public static String MAIL_TO = "to";
  public static String MAIL_SUBJECT = "subject";
  public static String MAIL_BODY = "body";
  public static String MAIL_HOST = "mailhost";
  public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    resp.setContentType("text/html; charset=BIG5");
    PrintWriter out = resp.getWriter();
    out.println("<form method=POST action=\"" + req.getRequestURI() + "\">");
    out.println("<table>");
    out.println("<tr><td>send mail server:</td>");
    out.println("<td><input type=text name=" + MAIL_HOST + " size=30></td></tr>");
    out.println("<tr><td>from:</td>");
    out.println("<td><input type=text name=" + MAIL_FROM + " size=30></td></tr>");
    out.println("<tr><td>to:</td>");
    out.println("<td><input type=text name=" + MAIL_TO + " size=30></td></tr>");
    out.println("<tr><td>subject:</td>");
    out.println("<td><input type=text name=" + MAIL_SUBJECT + " size=30></td></tr>");
    out.println("<tr><td>text:</td>");
    out.println("<td><textarea name=" + MAIL_BODY + " cols=40 rows=10></textarea></td></tr>");
    out.println("</table><br>");
    out.println("<input type=submit value=\"Send\">");
    out.println("<input type=reset value=\"Reset\">");
    out.println("</form>");
    out.flush();
  }  public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException,IOException {
    resp.setContentType("text/html; charset=gb2312");
    PrintWriter out = new PrintWriter(resp.getOutputStream());
    String from = req.getParameter(MAIL_FROM);
    String to = req.getParameter(MAIL_TO);
    String subject = req.getParameter(MAIL_SUBJECT);
    String body = req.getParameter(MAIL_BODY);
    String mailhost = req.getParameter(MAIL_HOST);
    try {
      SmtpClient mailer = new SmtpClient(mailhost);
      mailer.from(from);
      mailer.to(to);
      PrintStream ps = mailer.startMessage();
      ps.println("From: " + from);
      ps.println("To: " + to);
      ps.println("Subject: " + subject);
      ps.println(body);
      mailer.closeServer();
      out.println("Success!");
    }
    catch (Exception ex)
    {
      out.println("An error about:" + ex.getMessage());
    }
    out.flush();
  }  public void init(ServletConfig cfg) throws ServletException {
    super.init(cfg);
  }
  public void destroy() {
    super.destroy();
  }
}2.C:\tmp\test>dir
磁碟區 C 中的磁碟沒有標籤。
磁碟區序號:  98D4-FB0A 目錄:  C:\tmp\test2003/02/08  01:49p      <DIR>          .
2003/02/08  01:49p      <DIR>          ..
2003/02/07  07:23p                 881 HelloWorld2.class
2003/02/07  07:17p                 741 HelloWorld2.java
2003/02/08  01:49p               2,663 SendMailServlet.java <==========================
               3 個檔案           4,285 位元組
               2 個目錄   6,969,479,168 位元組可用C:\tmp\test>set classpath=.;D:\Tomcat 4.1\common\lib\servlet.jarC:\tmp\test>javac SendMailServlet.javaC:\tmp\test>dir
磁碟區 C 中的磁碟沒有標籤。
磁碟區序號:  98D4-FB0A 目錄:  C:\tmp\test2003/02/08  01:53p      <DIR>          .
2003/02/08  01:53p      <DIR>          ..
2003/02/07  07:23p                 881 HelloWorld2.class
2003/02/07  07:17p                 741 HelloWorld2.java
2003/02/08  01:53p               3,040 SendMailServlet.class <==========================
2003/02/08  01:49p               2,663 SendMailServlet.java
               4 個檔案           7,325 位元組
               2 個目錄   6,969,475,072 位元組可用C:\tmp\test>
Copy SendMailServlet.class to D:\Tomcat 4.1\webapps\newproject\WEB-INF\classes\SendMailServlet.class3.Config Tomcat:
  1.D:\Tomcat 4.1\webapps add a new directory newproject
    D:\Tomcat 4.1\webapps\newproject\WEB-INF
    D:\Tomcat 4.1\webapps\newproject\WEB-INF\classes\SendMailServlet.class
    D:\Tomcat 4.1\webapps\newproject\WEB-INF\web.xml
=>Detail:
<?xml version="1.0" encoding="ISO-8859-1"?><!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd"><web-app>
    <servlet>
       <servlet-name>test2</servlet-name>
       <servlet-class>SendMailServlet</servlet-class>
    </servlet>
    <servlet-mapping>
       <servlet-name>test2</servlet-name>
       <url-pattern>/servlet/SendMailServlet</url-pattern>
    </servlet-mapping>
</web-app>4. Start Tomcat
   Run:
   http://localhost:8080/newproject/servlet/SendMailServlet

我用了代码实验室的方法，http://www.code-labs.com/jsp/中的javamail调用，结果出错：org.apache.jasper.JasperException: Unable to compile Note: sun.tools.javac.Main has been deprecated.
C:\tomcat\work\DEFAULT\ROOT\sendmail_1.java:4: Package javax.mail not found in import.
import  javax.mail.*;
        ^
C:\tomcat\work\DEFAULT\ROOT\sendmail_1.java:5: Package javax.mail.internet not found in import.
import  javax.mail.internet.*;
        ^
C:\tomcat\work\DEFAULT\ROOT\sendmail_1.java:6: Package javax.activation not found in import.
import  javax.activation.*;
        ^
3 errors, 1 warning at org.apache.tomcat.facade.JasperLiaison.javac(JspInterceptor.java:898)
at org.apache.tomcat.facade.JasperLiaison.processJspFile(JspInterceptor.java:733)
at org.apache.tomcat.facade.JspInterceptor.requestMap(JspInterceptor.java:506)
at org.apache.tomcat.core.ContextManager.processRequest(ContextManager.java:968)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:875)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:833)
at org.apache.tomcat.modules.server.Http10Interceptor.processConnection(Http10Interceptor.java:176)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:494)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:516)
at java.lang.Thread.run(Thread.java:536)

我把javamail api包里的jar文件，我看了一共有4个，我把解压缩的文件放在jdk下，然后在环境变量里指了一下这4个jar包，哎，各位大哥，帮帮小妹吧，看看程序：
import java.io.*;import javax.servlet.*;import javax.servlet.http.*; import sun.net.smtp.*; public class SendMailServlet extends HttpServlet { public static String MAIL_FROM = "from"; public static String MAIL_TO = "to"; public static String MAIL_SUBJECT = "subject"; public static String MAIL_BODY = "body"; public static String MAIL_HOST = "mailhost"; public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {resp.setContentType("text/html; charset=gb2312"); PrintWriter out = resp.getWriter(); out.println("<form method=POST action=\"" + req.getRequestURI() + "\">"); out.println("<table>");out.println("<tr><td>send mail server:</td>"); out.println("<td><input type=text name=" + MAIL_HOST + " size=30></td></tr>"); out.println("<tr><td>from:</td>"); out.println("<td><input type=text name=" + MAIL_FROM + " size=30></td></tr>"); out.println("<tr><td>to:</td>"); out.println("<td><input type=text name=" + MAIL_TO + " size=30></td></tr>");out.println("<tr><td>subject:</td>"); out.println("<td><input type=text name=" + MAIL_SUBJECT + " size=30></td></tr>"); out.println("<tr><td>text:</td>"); out.println("<td><textarea name=" + MAIL_BODY + " cols=40 rows=10></textarea></td></tr>"); out.println("</table><br>"); out.println("<input type=submit value=\"Send\">"); out.println("<input type=reset value=\"Reset\">"); out.println("</form>");out.flush();} public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException,IOException { resp.setContentType("text/html; charset=gb2312"); PrintWriter out = new PrintWriter(resp.getOutputStream()); String from = req.getParameter(MAIL_FROM); String to = req.getParameter(MAIL_TO); String subject = req.getParameter(MAIL_SUBJECT); String body = req.getParameter(MAIL_BODY); String mailhost = req.getParameter(MAIL_HOST); try { SmtpClient mailer = new SmtpClient(mailhost); mailer.from(from);mailer.to(to);PrintStream ps = mailer.startMessage();ps.println("From: " + from);ps.println("To: " + to); ps.println("Subject: " + subject); ps.println(body); mailer.closeServer(); out.println("Success!"); } catch (Exception ex) { out.println("An error about:" + ex.getMessage()); }out.flush();}public void init(ServletConfig cfg) throws ServletException {super.init(cfg);}public void destroy() {super.destroy(); }} 这段servlet程序怎么用啊，直接存为*.class吗，在哪里看效果啊，总之，我就是不会用，请说得具体一点

小妹妳为什么不照我的步骤试试,
我的练习可以 Work…..加油!

a.
建议妳先到 http://apache.oregonstate.edu/jakarta/tomcat-4/binaries/ Download
最新版的 Tomcat: tomcat-4.1.18.exe
Tomcat 里面包括 Servlet Engine and JSP Engine 妳要看出 Servlet 的效果,
方法很多, 其中一个方法就是使用 Tomcat:tomcat-4.1.18.exe 安装方法很简单, 按一下再指定目录即可,
假设妳安装目录:
D:\Tomcat 4.1
不用修改配置文件
  http://localhost:8080
  test it如果有欢迎接口说明tomcat安装配置成功b. 接下来 Config Tomcat:D:\Tomcat 4.1\webapps
add a new d newproject
Create Directory:
D:\Tomcat 4.1\webapps\newproject
    D:\Tomcat 4.1\webapps\newproject\WEB-INF
    D:\Tomcat 4.1\webapps\newproject\WEB-INF\classesc. Next 用 Servlet 写 JavaMail 方法很多假设妳用 Notepad Compile 时必须把所有用到的 library 加到 Classpath 中
  假设 Servlet Name= SendMailServlet.java放在 : C:\tmp\test

  C:\tmp\test>dir
磁盘区 C 中的磁盘没有卷标。
磁盘区序号:  98D4-FB0A
目录:  C:\tmp\test
2003/02/08  01:49p      <DIR>          .
2003/02/08  01:49p      <DIR>          ..
2003/02/08  01:49p               2,663 SendMailServlet.java <==========================
               3 个档案           4,285 字节
               2 个目录   6,969,479,168 字节可用
  SendMailServlet.java 内容如下:
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import sun.net.smtp.*;public class SendMailServlet extends HttpServlet {
  public static String MAIL_FROM = "from";
  public static String MAIL_TO = "to";
  public static String MAIL_SUBJECT = "subject";
  public static String MAIL_BODY = "body";
  public static String MAIL_HOST = "mailhost";
  public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    resp.setContentType("text/html; charset=BIG5");
    PrintWriter out = resp.getWriter();
    out.println("<form method=POST action=\"" + req.getRequestURI() + "\">");
    out.println("<table>");
    out.println("<tr><td>send mail server:</td>");
    out.println("<td><input type=text name=" + MAIL_HOST + " size=30></td></tr>");
    out.println("<tr><td>from:</td>");
    out.println("<td><input type=text name=" + MAIL_FROM + " size=30></td></tr>");
    out.println("<tr><td>to:</td>");
    out.println("<td><input type=text name=" + MAIL_TO + " size=30></td></tr>");
    out.println("<tr><td>subject:</td>");
    out.println("<td><input type=text name=" + MAIL_SUBJECT + " size=30></td></tr>");
    out.println("<tr><td>text:</td>");
    out.println("<td><textarea name=" + MAIL_BODY + " cols=40 rows=10></textarea></td></tr>");
    out.println("</table><br>");
    out.println("<input type=submit value=\"Send\">");
    out.println("<input type=reset value=\"Reset\">");
    out.println("</form>");
    out.flush();
  }  public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException,IOException {
    resp.setContentType("text/html; charset=gb2312");
    PrintWriter out = new PrintWriter(resp.getOutputStream());
    String from = req.getParameter(MAIL_FROM);
    String to = req.getParameter(MAIL_TO);
    String subject = req.getParameter(MAIL_SUBJECT);
    String body = req.getParameter(MAIL_BODY);
    String mailhost = req.getParameter(MAIL_HOST);
    try {
      SmtpClient mailer = new SmtpClient(mailhost);
      mailer.from(from);
      mailer.to(to);
      PrintStream ps = mailer.startMessage();
      ps.println("From: " + from);
      ps.println("To: " + to);
      ps.println("Subject: " + subject);
      ps.println(body);
      mailer.closeServer();
      out.println("Success!");
    }
    catch (Exception ex)
    {
      out.println("An error about:" + ex.getMessage());
    }
    out.flush();
  }  public void init(ServletConfig cfg) throws ServletException {
    super.init(cfg);
  }
  public void destroy() {
    super.destroy();
  }
}
d. Compile SendMailServlet.java设定 Classpath:
C:\tmp\test>set classpath=.;D:\Tomcat 4.1\common\lib\servlet.jar; D:\Tomcat 4.1\common\lib\mail.jar
开始 Compile
C:\tmp\test>javac SendMailServlet.java
  Compile 完成在C:\tmp\test 目录中会产生一个档案  SendMailServlet.classe. 开始 Run Servlet SendMailServlet.class
   1.Copy SendMailServlet.class to D:\Tomcat4.1\webapps\newproject\WEB-INF\classes\SendMailServlet.class
   2. D:\Tomcat 4.1\webapps\newproject\WEB-INF 目录中加一个档案
     web.xml
     内容如下:
    <?xml version="1.0" encoding="ISO-8859-1"?><!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd"><web-app>
    <servlet>
       <servlet-name>test2</servlet-name>
       <servlet-class>SendMailServlet</servlet-class>
    </servlet>
    <servlet-mapping>
       <servlet-name>test2</servlet-name>
       <url-pattern>/servlet/SendMailServlet</url-pattern>
    </servlet-mapping>
</web-app> 3. Start Tomcat
4. http://localhost:8080/newproject/servlet/SendMailServlet 开启妳测试 Javamail
   的 Page 填好资料 Submit 后就可传 Mail

调试易

javamail api发邮件

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