项目中用到的2个工具类代码：FTP与SendMail

技术2022-05-11 159

今天刚写了几个代码，用在正在开发的项目中虽然是从各处找来的，但是经过我修改完善了一下

1 SendMail -- 用于项目中贺卡的发送原本来自于 aistill原作的代码：http://www.csdn.net/Develop/Read_Article.asp?Id=14929 本代码修改了一些实现。可增加任意附件，可支持HTML 可以不考虑设定标题、内容的是否合理等本类采用了JavaMail及JAF包，需要从http://java.sun.com另行下载另外，类中采用了我自己的Logger类，可按照自己情况修改

2 FTPConnection -- 用于项目中下载管理提供FTP浏览，列表等简单功能，由于B/S架构的限制无法普及使用。仅适用于管理员单用户使用鉴于使用WEB方式访问FTP并上传下载的意义不大，仅提供浏览功能目的是，从FTP中得到文件名称并加入到数据库提供下载本类采用了sun提供的FTPClient类实现。该类功能极弱.... 在ServU服务器测试通过改进：如果要让多人使用，可以考虑将其实例加入Session

============= 代码：SendMail.java =====================

package nona.util;/** * 以下的包需要下载 * JAF 1.0.2 * JavaMail 1.3.1 * http://java.sun.org */

import java.util.*;import javax.mail.*;import javax.mail.internet.*;import java.util.Date;import javax.activation.*;import java.io.*;

/** * 邮件发送类，用于发送邮件及附件 * 支持mime格式及Html，支持多附件 * Title: 冰云工作室 * Description: 邮件发送 * Copyright: Copyright (c) 2003 * Company: icecloud@sina.com * @author 冰云 * @version 1.0 August.23rd 2003 * @todo 使用者请修改Logger.log为System.out.println */public class SendMail {

private MimeMessage mimeMsg; //MIME邮件对象 private Session session; //邮件会话对象 private Properties props; //系统属性 private Multipart mp; //Multipart对象,邮件内容,标题,附件等内容均添加到其中后再生成MimeMessage对象

private String authentication = "false"; //smtp是否需要认证 private String username = ""; //smtp认证用户名和密码 private String password = ""; private String from = ""; private String to = ""; private String cc = ""; private String bcc = ""; private String body = ""; private String subject = ""; private String host = ""; private String reply = ""; private String sender = ""; private String date = ""; private boolean textmail = true;

private String mailtype = PLAIN;

private static final String HTML = "text/html;charset=GB2312"; private static final String PLAIN = "text/plain; charset=GB2312";

private ArrayList attachment = new ArrayList(); /** * */ public SendMail() { this(true); }

public SendMail(boolean textmail) { this.textmail = textmail; this.mailtype = textmail ? PLAIN : HTML;

}

public SendMail(String from, String to, String subject, String body) { this(); loadDefault(); }

private boolean createMimeMessage() { try { // Logger.log(this,"createMimeMessage():准备获取邮件会话对象！"); session = Session.getDefaultInstance(props, null); //获得邮件会话对象 } catch (Exception e) { Logger.logerr(this, "createMimeMessage():获取邮件会话对象时发生错误！"); Logger.logerr(this, e); return false; }

try { mimeMsg = new MimeMessage(session); //创建MIME邮件对象 mp = new MimeMultipart(); return true; } catch (Exception e) { Logger.logerr(this, "createMimeMessage():创建MIME邮件对象失败！"); Logger.logerr(this, e); return false; } }

private boolean initMail() { if (props == null) { props = System.getProperties(); //获得系统属性对象 } if ("".equals(host)) { // 设置主机 loadDefault(); } props.put("mail.smtp.host", host); //设置SMTP主机 if (!this.createMimeMessage()) return false;

props.put("mail.smtp.auth", authentication); //设置认证 try { if (!"".equals(subject)) // 设置标题 mimeMsg.setSubject(subject); if (!"".equals(from)) //设置发信人 mimeMsg.setFrom(new InternetAddress(from)); if (!"".equals(to)) // 设置收信人 mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to)); if (!"".equals(cc)) // 设置抄送 mimeMsg.setRecipients(Message.RecipientType.CC, (Address[]) InternetAddress.parse(cc)); if (!"".equals(bcc)) // 设置密件抄送 mimeMsg.setRecipients(Message.RecipientType.BCC, (Address[]) InternetAddress.parse(bcc));

if (!"".equals(reply)) //设置回复 mimeMsg.setReplyTo( (Address[]) InternetAddress.parse(reply)); // if (!"".equals(date)) //设置日期 // mimeMsg.setSentDate(new Date(date));

if (!"".equals(body)) { // 设置内容 if (!this.textmail) { BodyPart bp = new MimeBodyPart(); bp.setContent(body, mailtype); mp.addBodyPart(bp); } else { mimeMsg.setText(body); } } if (!attachment.isEmpty()) { // 设置附件 for (Iterator it = attachment.iterator(); it.hasNext(); ) { BodyPart bpr = new MimeBodyPart(); FileDataSource fileds = new FileDataSource( (String) it.next()); bpr.setDataHandler(new DataHandler(fileds)); bpr.setFileName(fileds.getName()); mp.addBodyPart(bpr); } }

return true; } catch (Exception e) { Logger.logerr(this, "initMail():设置邮件发生错误！"); Logger.logerr(this, e); return false; } }

public boolean Send() { try { if (initMail()) { if (mp.getCount() > 0) mimeMsg.setContent(mp); mimeMsg.saveChanges(); Logger.log(this, "正在发送邮件....");

Session mailSession = Session.getInstance(props, null); Transport transport = mailSession.getTransport("smtp"); transport.connect( (String) props.get("mail.smtp.host"), username, password); transport.sendMessage(mimeMsg, mimeMsg.getAllRecipients());

Logger.log(this, "发送邮件成功！"); transport.close();

return true; } else { return false; } } catch (Exception e) { Logger.logerr(this, "邮件发送失败！"); Logger.logerr(this, e); return false; }

}

private void loadDefault() {

}

public void setCc(String cc) { this.cc = cc; }

public void setBcc(String bcc) { this.bcc = bcc; }

public void setHost(String host, boolean auth) { this.host = host; this.authentication = String.valueOf(auth); }

public void setHost(String host, boolean auth, String username, String password) { setHost(host, auth); setUsername(username); setPassword(password);

}

public void setHost(String host, String username, String password) { setHost(host, true); setUsername(username); setPassword(password); }

public void setHost(String host) { setHost(host, true); }

public void setFrom(String from) { this.from = from; }

public void setPassword(String password) { this.password = password; }

public void setTo(String to) { this.to = to; }

public void setUsername(String username) { this.username = username; }

public void setAttachment(String filename) { this.attachment.add(filename); }

public void setBody(String body) { this.body = body; }

public void setSubject(String subject) { this.subject = subject; }

public void setReply(String reply) { this.reply = reply; }

public void setSender(String sender) { this.sender = sender; }

public static void main(String[] argc) { if (argc.length == 0) { System.out.println("Useage:SendMail [smtp] [user] [password] [to] [body]"); } else {

SendMail sm = new SendMail(); sm.setHost(argc[0], argc[1], argc[2]); sm.setTo(argc[3]); sm.setBody(argc[4]); if (sm.Send()) { System.out.print("Send successful."); } else { System.out.print("Send failed."); } }

}}

================== 代码：FTPConnection.java ===============

package nona.util;

import sun.net.ftp.*;import java.io.*;import java.io.IOException;import java.util.StringTokenizer;import sun.net.ftp.*;import java.util.ArrayList;

/** * FTP连接代码，可浏览FTP等 * 仅适用于管理员操作，不适合普通用 * * Title: 冰云工作室 * Description: * Copyright: Copyright (c) 2003 * Company: * @author 冰云 * @version 1.0 August.23rd 2003 */public class FTPConnection { FtpClient client; private String host; private String username; private String password; private String path = "/"; private int port = 21; private static FTPConnection instance;

private FTPConnection() { } // 单例类的方法，获得唯一实例

public static FTPConnection getInstance() { if (instance == null) { instance = new FTPConnection(); } return instance; }

// 连接FTP，并进入当前的path

public void connect() throws IOException { if (client == null) { client = new FtpClient(host, port); client.login(username, password); client.binary(); client.cd(path); } else { client.noop(); client.cd(path); } }

// 关闭FTP

public void close() throws IOException { if (client != null) { client.closeServer(); } }

// 获得FTPClient类，可以直接对其操作 public FtpClient getClient() throws IOException { if (client == null) { connect(); } return client; }

// 返回当前目录的所有文件及文件夹

public ArrayList getFileList() throws IOException { BufferedReader dr = new BufferedReader(new InputStreamReader(client.list())); ArrayList al = new ArrayList(); String s = ""; while ( (s = dr.readLine()) != null) { al.add(s); } return al; }

// 返回当前目录的文件名称

public ArrayList getNameList() throws IOException { BufferedReader dr = new BufferedReader(new InputStreamReader(client. nameList(path))); ArrayList al = new ArrayList(); String s = ""; while ( (s = dr.readLine()) != null) { al.add(s); } return al; }

// 判断一行文件信息是否为目录

public boolean isDir(String line) { return ( (String) parseLine(line).get(0)).indexOf("d") != -1; }

public boolean isFile(String line) { return!isDir(line); }

// 处理getFileList取得的行信息

private ArrayList parseLine(String line) { ArrayList s1 = new ArrayList(); StringTokenizer st = new StringTokenizer(line, " "); while (st.hasMoreTokens()) { s1.add(st.nextToken()); } return s1; }

public String getFileName(String line) { return ( (String) parseLine(line).get(8)); }

public String getFileSize(String line) { return (String) parseLine(line).get(4); }

public String getFileDate(String line) { ArrayList a = parseLine(line); return (String) a.get(5) + " " + (String) a.get(6) + " " + (String) a.get(7); }

public String getHost() { return host; }

public void setHost(String host) { this.host = host; }

public void setPassword(String password) { this.password = password; }

public String getUsername() { return username; }

public void setUsername(String username) { this.username = username; }

public String getPath() { return path; }

public void setPath(String path) throws IOException { if (client == null) this.path = path; else { client.cd(path); } }

public void setPort(int port) { this.port = port; }

}

============== 使用方法例 ====================

1 SendMail:<%SendMail sm = new SendMail();sm.setHost("smtp.vip.sina.com","user","pass");sm.setSubject("xxx");sm.setTo("xx");....随便选择几个set写就行.......很多可以省略out.println(sm.send()); // true or false%>

2 FTPConnection:<%FTPConnection ftpc = FTPConnection.getInstance();ftpc.setHost("192.168.10.100");ftpc.setUsername("admin");ftpc.setPassword("123");ftpc.connect();%><table border="1"><tr><td></td><td>名称</td><td>大小</td><td>创建时间</td></tr><%// 遍历用getFileList取得的当前目录下的信息，并得到每个文件的一行信息for(Iterator it = ftpc.getFileList().iterator();it.hasNext();){String line = (String)it.next(); %><tr><td><%if (ftpc.isDir(line)) {%>dir<%}else{%>file<%}%></td><td><%=ftpc.getFileName(line)%></td><td><%=ftpc.getFileSize(line)%></td><td><%=ftpc.getFileDate(line)%></td></tr><%}%></table>

说明：1 FTPConnection中，如果文件名含有空格可能会出现错误

2 SendMail中，loadDefault()函数未提供实现，可采用自己的properties文件来初始化

3 使用SendMail请修改所有的Logger，这是我自定义的记录类，忘记删除了，可考虑用System.out.println代替

4 FTPConnection中，如果用在普通用户页面上，请勿采用单例模式而采用普通的类并将其加入Session

5 FTPConnection换页进入目录的同时，可修改path，这样可以继续浏览下级目录的内容

专利

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