谁有Javamail的收邮件的例子，要能够运行的。比如可以收pop3.163.com上的

呵呵，这也是我前一段时间从参考了好多大侠的代码编成的，Mail是一个bean，然后从jsp文件中调用这个bean//接收并阅读邮件的bean
package xx;import java.io.*;
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;public class Mail{
Store store;
    Folder folder;
Message message[];

public void init(String host,String username,String password) throws Exception{
Session session =Session.getInstance(new Properties(),null);
   //get the store
   store=session.getStore("pop3");
   store.connect(host,username,password);
   //get folder
   folder = store.getFolder("INBOX");
   folder.open(Folder.READ_ONLY);

   //get directory
   message = folder.getMessages();
   }

  public MailParts[] getList() throws Exception{
    try{
int mailCnt = message.length;
MailParts[] rM = new MailParts[mailCnt];
for(int i=0; i<mailCnt; i++){
  rM[i] = new MailParts();
  //System.out.println(message[i].getContentType());
  String ctp = message[i].getContentType();
  rM[i].id = message[i].getMessageNumber();
  if(ctp.indexOf("GB2312") != -1){
   rM[i].decode = "GB2312";
rM[i].subject = new String(message[i].getSubject().getBytes("8859_1"),"GBK");
  }else
rM[i].subject = message[i].getSubject(); //显示乱码,需要有以下代码进行编码

  //rM[i].subject = new String(message[i].getSubject().getBytes("8859_1"),"GBK");
  //System.out.println(message[i].getEncoding());
  rM[i].from = message[i].getFrom()[0].toString();
  rM[i].recDate = message[i].getSentDate();//getReceivedDate()  取不出时间来
  //rM[i].recDate = message[i].getReceivedDate();
  Object content=message[i].getContent();
  rM[i].attach = 0;
  if(content instanceof Multipart){ //如果邮件有附件或者邮件是html邮件
   for(int k=0;k<((Multipart)content).getCount();k++){
Part thePart = ((Multipart)content).getBodyPart(k);
String dispos = thePart.getDisposition();
if(dispos!=null && dispos.equals(Part.ATTACHMENT)) //如果有附件
rM[i].attach ++;
}
  }
}
return rM;
  }catch(Exception e){
   e.printStackTrace();
   System.out.println(e.toString());
   return null;
  }
  }

public String getText(int mailId) throws MessagingException,IOException{
   Object content = message[mailId].getContent();
   String theTxt = "";
   if(content instanceof Multipart){
    //System.out.println("操作一次！");
theTxt = getMultipart((Multipart)content);
}else{
//System.out.println("再操作一次！");
        theTxt = getPart(message[mailId]);
}
return theTxt;
}public String[] getAttName(int mailId,int attCnt) throws MessagingException,IOException{
   Object content = message[mailId].getContent();
   Multipart mContent = (Multipart)content;
   String[] theAttName = new String[attCnt];
   int k = 0;
   for(int i=0,n=mContent.getCount();i<n;i++){
Part mPart = mContent.getBodyPart(i);
String disposition=mPart.getDisposition();
if(disposition==null) continue;
else if(disposition.equals(Part.ATTACHMENT)){
String atTempName = mPart.getFileName();
theAttName[k] = new String(atTempName.getBytes("8859_1"),"GBK");
k ++;
//String atName = new String(atTempName.getBytes("8859_1"),"GB2312");
//String atName = new String(atTempName.getBytes("GBK"),"ISO-8859-1");
}else continue;
   }

   return theAttName;
}

String getMultipart(Multipart multipart) throws MessagingException,IOException{
     String txtStr = "";
for(int i=0,n=multipart.getCount();i<n;i++){
//System.out.println("第"+i+"次操作！");
txtStr = txtStr + "<br><font color=red>第" + i + "部分正文内容:</font>" + getPart(multipart.getBodyPart(i));
     }
return txtStr;
}

String getPart(Part part) throws MessagingException,IOException{
    String disposition=part.getDisposition();
    String contentType=part.getContentType();
String theBody = "";
System.out.println("进入了getPart模块！");
//System.out.println(contentType);
try{
if(disposition==null){//当前处理部分为正文时
    //check if plain
if((contentType.length()>=10) && (contentType.toLowerCase().substring(0,10).equals("text/plain"))){
        theBody = (String)part.getContent();
     }else{//当邮件正文中含有html内容时
          //theBody = "Other body:" + contentType;
          //theBody ="<br>" + part.getContent();
Object thisPart = part.getContent();
if(thisPart instanceof MimeMultipart){
theBody = "这是MimeMultpart<br>";
theBody = theBody + "共有"+ ((MimeMultipart)thisPart).getCount()+"部分";
for(int l=0;l<((MimeMultipart)thisPart).getCount();l++){
theBody = theBody + "<br>第" + l +"部分：";
theBody = theBody + (((MimeMultipart)thisPart).getBodyPart(l)).getContent();
}

}else theBody = "<br>" + thisPart;
     }
     }else if(disposition.equals(Part.ATTACHMENT)){
String atTempName = part.getFileName();
String atName = new String(atTempName.getBytes("8859_1"),"GBK");
//String atName = new String(atTempName.getBytes("8859_1"),"GB2312");
//String atName = new String(atTempName.getBytes("GBK"),"ISO-8859-1");
theBody = "这部分是附件，附件名：" + atName;
theBody = theBody + "<br>附件的类型：" + contentType;
/*下面代码是试验中文用何种编码解决
String s=part.getFileName();
try{
System.out.println(s);
System.out.println(new String(s.getBytes("GB2312"),"8859_1"));
System.out.println(new String(s.getBytes("8859_1"),"GB2312"));
}catch(Exception ex){}
*/
//System.out.println("contentType:" + contentType);

      //saveFile(part.getFileName(),part.getInputStream());
//saveFile(atName,part.getInputStream());
     }else if(disposition.equals(Part.INLINE)){
      theBody = "\"InLine\"的文件：" + part.getFileName() + "<br>类型:"+contentType;
     }else{//should never happen
        theBody = "Other:" + disposition;
     }
}catch(Exception e){
System.out.println(e.toString());
System.out.println(e.getMessage());
e.printStackTrace();
}
return theBody;
  }

  public static void saveFile(String filename,InputStream input)throws IOException{
     if(filename==null){
      filename=File.createTempFile("xx","out").getName();
}
     //如果目标目录中已有相同名字的附件,则在本附件名后加上相应数字
     String filepath = "attachment\\";
File file= new File(filepath + filename);
     for(int i=0;file.exists();i++){
      file=new File(filepath + filename + i);
     }
//***********************

     FileOutputStream fos=new FileOutputStream(file);
     BufferedOutputStream bos=new BufferedOutputStream(fos);
     BufferedInputStream bis = new BufferedInputStream(input);
     int aByte;
     while((aByte=bis.read())!=-1){
      bos.write(aByte);
     }
     bos.flush();
     bos.close();
     bis.close();
}

public void closeConn() throws Exception{
  //close connection
  folder.close(false);
  store.close();
}
}
/*总结：
当邮件有附件或为html格式时，其message.content 为Multipart
1)当无附件为html格式时，MultPart的第0部分为文本"text/plain"，第1部分为html内容"text/html"
2)当有附件为text格式时，Multpart的第0部分为文本，第1部分为附件
3)当既有附件又为html格式时，Multpart的第0部分为正文（包括了text和html）第一部分开始为附件
这时的part为MimePart
*/
上面是bean，里面有很多代码是我加上测试的，请分清
下面是收邮件的jsp文件<%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="java.util.*,fym.mail_out.*" %>
<HTML>
<HEAD>
<title>邮件列表</title>
<style>

</style>
</HEAD>
<BODY bgcolor="#ffffff" text="#0000ff" topmargin="0" marginwidth="0" marginheight="0" >
<div align="center"><font size=4>外部邮件（Internet）试验系统:邮件列表 </font></div>
  <%!
int PageSize = 15;
int CurPage = 1;
int TotalCnt = 0;
int PageCnt = 0;
%>
<jsp:useBean id="theMail" scope="session" class="fym.mail_out.Mail"/>
<form name=mlist>
  <font size="3">
<%
String hostname = "pop.163.com";String username = "xxxx";
String password = "xxxx";session.setAttribute("hostname",hostname);
session.setAttribute("username",username);
session.setAttribute("password",password);String mailflag = "rec";
MailParts[] mP = null;
try{
theMail.init(hostname,username,password);
mP = theMail.getList();
TotalCnt = mP.length;
}
catch(Exception m){
m.printStackTrace();
out.print(m.toString());
if(m.toString().indexOf("Connect failed")!=-1)
out.print("解析邮件主机名错误，可能是网络不通，或IP设置问题，请检查！");
return;
}
//MailPart是我自己定义的一个类，包括了邮件主题等信息package fym.mail_out;public class MailParts {
public int id;           //1
public String subject;   //2
public String from;    //3
public java.util.Date recDate;  //4
public int attach;     //5 附件数目
public String decode;   //6 邮件的编码方式
}
注意，上一个jsp文件没有贴出邮件主题的显示，很简单，你从mP数组中可以提取任何你想要的邮件信息加以显示，然后，通过链接传递邮件的id到阅读邮件的页面如下：这是读邮件的内容，我做的比较粗，只是一股恼地把所有邮件内容显示出来了，附件也是把文件名显示出来，只是test，但稍加完善就可以实用的，注意都是调用的同一个bean里的不同方法,并且username和pwd是从session里读来的，你当然可以现赋值了<%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="java.util.*,fym.mail_out.*" %>
<HTML>
<HEAD>
<title>读邮件</title>
</HEAD>
<BODY bgcolor="#ffffff" text="#0000ff" topmargin="0" marginwidth="0" marginheight="0" >
<div align="center"><font size=4>外部邮件（Internet）试验系统:阅读邮件内容 </font></div>
<jsp:useBean id="theMail" scope="session" class="fym.mail_out.Mail"/>
<form name=mlist>
  <font size="3">
<%
String idStr = request.getParameter("mailid");
//这应该是从上一个列邮件的jsp文件中提交过来的
int mId = Integer.parseInt(idStr);
/*
String hostname = (String)session.getAttribute("hostname");
String username = (String)session.getAttribute("username");
String password = (String)session.getAttribute("password");
*/
String mailBody = "";
try{
//theMail.init(hostname,username,password);
mailBody = theMail.getText(mId);
}
catch(Exception m){
//out.print(m.toString());
if(m.toString().indexOf("Connect failed")!=-1)
out.print("解析邮件主机名错误，可能是网络不通，或IP设置问题，请检查！");
return;
}
%>
<%=mailBody %>
</body>
</HTML>

调试易

谁有Javamail的收邮件的例子，要能够运行的。比如可以收pop3.163.com上的

解决方案 »