关于java显示附件链接的信息
本篇文章给大家谈谈java显示附件链接，以及对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。
本文目录一览：
java 上传附件实现方法
第一,jsp上传页面内容:
%@ page contentType="text/html; charset=GBK" %
%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %
html
head
title
jsp1
/title
/head
body bgcolor="#ffffff"
html:form action="myupload.do" method="post" enctype="multipart/form-data"
html:file property="thisFile"/br
html:file property="thisFile"/br
html:submit/
/html:form
/body
/html
第二,一个javabean
package upload;
import org.apache.struts.action.ActionForm;
import org.apache.struts.upload.FormFile;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMapping;
import javax.servlet.http.HttpServletRequest;
public class FileInfo extends ActionForm {
private FormFile thisFile;
public FormFile getThisFile() {
return thisFile;
}
public void setThisFile(FormFile thisFile) {
this.thisFile = thisFile;
}
public ActionErrors validate(ActionMapping actionMapping,
HttpServletRequest httpServletRequest) {
/** @todo: finish this method, this is just the skeleton.*/
return null;
}
public void reset(ActionMapping actionMapping,
HttpServletRequest servletRequest) {
}
}
第三,一个action
package upload;
import java.io.*;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.Action;
import org.apache.struts.upload.FormFile;
public class myupload extends Action {
public ActionForward execute(ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest request,
HttpServletResponse response) throws
FileNotFoundException, IOException {
FileInfo fileInfo = (FileInfo) actionForm;
//获取上传文件
FormFile f=fileInfo.getThisFile();
InputStream is=f.getInputStream();
//将文件存入服务器上
String filename=request.getSession().getServletContext().getRealPath("/shangchuan/"+f.getFileName());
OutputStream os=new FileOutputStream(filename);
int x=0;
//优化流处理过程
byte[] buffer = new byte[8192];
while((x=is.read(buffer, 0, 8192))!=-1)
{
os.write(buffer,0,x);
}
os.close();
response.sendRedirect("jsp1.jsp");//根据实际情况跳转
return null;
}
}
java超链接怎么实现？
1.随便在一个文件夹包上右击新建TestLink类，勾选main方法程序，并初始化导入包、继承JFrame窗体等。
2.在main方法中，首先实例化TestLink类，以便测试随时使用。
3.在此类的构造方法（没有如何参数）中，初始化Java窗体，设置窗体的各项属性，用户可适当增加其他属性。
4.运行此类，查看基本的Java窗体是否实现。
5.在构造方法中实例化JLabel类，双引号内的文字为窗体上显示的文字，必须被final修饰，然后添加此类的鼠标监听事件，最后加上“this.add(mBlogSina);”将标签加入到窗体中。
6.运行程序后，如下图所示，JLabel被加入到窗体中。
7.在鼠标监听事件中添加匿名类MouseadAdapter的三个方法。
8.创建如图的URI对象（双引号内为点击链接到的网址），并创建Desktop类，此时发现程序出错，点击“X”添加异常处理并将声明的Desktop类移到声明的uri下方。
9.输入下图if语句执行判断，并输入“dptdtp.browse(uri);”（执行链接操作的方法）时发现重新报错，则执行类似第8步的异常处理。
10.直至此步，运行程序，点击JLabel标签就会自动打开系统默认浏览器转到用户设置的指定网址。
11.下一步在其他两个方法内输入以下语句，实现鼠标移出、移入链接的效果。具体的实现代码，你必须亲自去做。
怎么用java发送带附件的邮件代码详解
package email;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.Socket;
import java.nio.charset.Charset;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import sun.misc.BASE64Encoder;
public class Mail {
private static final String LINE_END = "\r\n";
private boolean isDebug = true;
private boolean isAllowReadSocketInfo = true;
private String host;
private String from;
private ListString to;
private ListString cc;
private ListString bcc;
private String subject;
private String user;
private String password;
private String contentType;
private String boundary;
private String boundaryNextPart;
private String contentTransferEncoding;
private String charset;
private String contentDisposition;
private String content;
private String simpleDatePattern;
private String defaultAttachmentContentType;
private ListMailPart partSet;
private static MapString, String contentTypeMap;
static {
// MIME Media Types
contentTypeMap = new HashMapString, String();
contentTypeMap.put("xls", "application/vnd.ms-excel");
contentTypeMap.put("xlsx", "application/vnd.ms-excel");
contentTypeMap.put("xlsm", "application/vnd.ms-excel");
contentTypeMap.put("xlsb", "application/vnd.ms-excel");
contentTypeMap.put("doc", "application/msword");
contentTypeMap.put("dot", "application/msword");
contentTypeMap.put("docx", "application/msword");
contentTypeMap.put("docm", "application/msword");
contentTypeMap.put("dotm", "application/msword");
}
private class MailPart extends Mail {
public MailPart() {
}
}
public Mail() {
defaultAttachmentContentType = "application/octet-stream";
simpleDatePattern = "yyyy-MM-dd HH:mm:ss";
boundary = "--=_NextPart_zlz_3907_" + System.currentTimeMillis();
boundaryNextPart = "--" + boundary;
contentTransferEncoding = "base64";
contentType = "multipart/alternative";
charset = Charset.defaultCharset().name();
partSet = new ArrayListMailPart();
to = new ArrayListString();
cc = new ArrayListString();
bcc = new ArrayListString();
}
private String getPartContentType(String fileName) {
String ret = null;
if (null != fileName) {
int flag = fileName.lastIndexOf(".");
if (0 = flag flag fileName.length() - 1) {
fileName = fileName.substring(flag + 1);
}
ret = contentTypeMap.get(fileName);
}
if (null == ret) {
ret = defaultAttachmentContentType;
}
return ret;
}
private String toBase64(String str, String charset) {
if (null != str) {
try {
return toBase64(str.getBytes(charset));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
return "";
}
private String toBase64(byte[] bs) {
return new BASE64Encoder().encode(bs);
}
private String toBase64(String str) {
return toBase64(str, Charset.defaultCharset().name());
}
private String getAllParts() {
int partCount = partSet.size();
StringBuilder sbd = new StringBuilder(LINE_END);
for (int i = partCount - 1; i = 0; i--) {
Mail attachment = partSet.get(i);
String attachmentContent = attachment.getContent();
if (null != attachmentContent 0 attachmentContent.length()) {
sbd.append(getBoundaryNextPart()).append(LINE_END);
sbd.append("Content-Type: ");
sbd.append(attachment.getContentType());
sbd.append(LINE_END);
sbd.append("Content-Transfer-Encoding: ");
sbd.append(attachment.getContentTransferEncoding());
sbd.append(LINE_END);
if (i != partCount - 1) {
sbd.append("Content-Disposition: ");
sbd.append(attachment.getContentDisposition());
sbd.append(LINE_END);
}
sbd.append(LINE_END);
sbd.append(attachment.getContent());
sbd.append(LINE_END);
}
}
sbd.append(LINE_END);
sbd.append(LINE_END);
partSet.clear();
return sbd.toString();
}
private void addContent() {
if (null != content) {
MailPart part = new MailPart();
part.setContent(toBase64(content));
part.setContentType("text/plain;charset=\"" + charset + "\"");
partSet.add(part);
}
}
private String listToMailString(ListString mailAddressList) {
StringBuilder sbd = new StringBuilder();
if (null != mailAddressList) {
int listSize = mailAddressList.size();
for (int i = 0; i listSize; i++) {
if (0 != i) {
sbd.append(";");
}
sbd.append("").append(mailAddressList.get(i)).append("");
}
}
return sbd.toString();
}
private ListString getrecipient() {
ListString list = new ArrayListString();
list.addAll(to);
list.addAll(cc);
list.addAll(bcc);
return list;
}
public void addAttachment(String filePath) {
addAttachment(filePath, null);
}
public void addTo(String mailAddress) {
this.to.add(mailAddress);
}
public void addCc(String mailAddress) {
this.cc.add(mailAddress);
}
public void addBcc(String mailAddress) {
this.bcc.add(mailAddress);
}
public void addAttachment(String filePath, String charset) {
if (null != filePath filePath.length() 0) {
File file = new File(filePath);
try {
addAttachment(file.getName(), new FileInputStream(file),
charset);
} catch (FileNotFoundException e) {
System.out.println("错误：" + e.getMessage());
System.exit(1);
}
}
}
紧急求助，关于java 取domino的附件
// /**
// * 发送一个附件的情况
// */
// //设置附件
// //DataSource是对附件的封装,是一个接口，系统已经实现的子类有URLDataSource, DataHandlerDataSource, FileDataSource
// //里面封装了各种与附件有关的方法，包括获取附件的InputStream
// DataSource dataSource = new FileDataSource(new File("E:\\aaa.txt"));
// //DataHandler是对DataSource的封装，可以把Stream转换为String，
// DataHandler dataHandler = new DataHandler(dataSource);
// part4.setDataHandler(dataHandler);
// //附件的名称，默认为content，如果文件名不加扩展名在进行附件下载的时候系统会不知道该附件是什么类型的附件，
// //这样在不清楚文件类型的情况下，文件有可能是打不开的
// part4.setFileName("doc.sql");
//
// /**
// * 发送多个附件的情况
// */
// Multipart attachments = new MimeMultipart();
// BodyPart attach1 = new MimeBodyPart();
// //设置附件1的内容
// DataSource dataSource_attach1 = new FileDataSource(new File("E:\\aaa.txt"));
// DataHandler dataHandler_attach1 = new DataHandler(dataSource_attach1);
// attach1.setDataHandler(dataHandler_attach1);
// attach1.setFileName("attach1_doc.sql");
// BodyPart attach2 = new MimeBodyPart();
// //设置附件2的内容
// DataSource dataSource_attach2 = new FileDataSource(new File("E:\\aaa.txt"));
// DataHandler dataHandler_attach2 = new DataHandler(dataSource_attach2);
// attach2.setDataHandler(dataHandler_attach2);
// attach2.setFileName("attach2_doc.sql");
// attachments.addBodyPart(attach1);
// attachments.addBodyPart(attach2);
// part5.setContent(attachments);
//这里可以成功发送附件，请参考，发附件功能用得相对较少，注意附件大小不要太大了
java 代码发邮件怎么添加附件
实现java发送邮件的过程大体有以下几步：
准备一个properties文件，该文件中存放SMTP服务器地址等参数。
利用properties创建一个Session对象
利用Session创建Message对象，然后设置邮件主题和正文
利用Transport对象发送邮件
需要的jar有2个：activation.jar和mail.jar发送附件，需要用到Multipart对象。
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
public class JavaMailWithAttachment {
private MimeMessage message;
private Session session;
private Transport transport;
private String mailHost = "";
private String sender_username = "";
private String sender_password = "";
private Properties properties = new Properties();
/*
* 初始化方法
*/
public JavaMailWithAttachment(boolean debug) {
InputStream in = JavaMailWithAttachment.class.getResourceAsStream("MailServer.properties");
try {
properties.load(in);
this.mailHost = properties.getProperty("mail.smtp.host");
this.sender_username = properties.getProperty("mail.sender.username");
this.sender_password = properties.getProperty("mail.sender.password");
} catch (IOException e) {
e.printStackTrace();
}
session = Session.getInstance(properties);
session.setDebug(debug);// 开启后有调试信息
message = new MimeMessage(session);
}
/**
* 发送邮件
*
* @param subject
* 邮件主题
* @param sendHtml
* 邮件内容
* @param receiveUser
* 收件人地址
* @param attachment
* 附件
*/
public void doSendHtmlEmail(String subject, String sendHtml, String receiveUser, File attachment) {
try {
// 发件人
InternetAddress from = new InternetAddress(sender_username);
message.setFrom(from);
// 收件人
InternetAddress to = new InternetAddress(receiveUser);
message.setRecipient(Message.RecipientType.TO, to);
// 邮件主题
message.setSubject(subject);
// 向multipart对象中添加邮件的各个部分内容，包括文本内容和附件
Multipart multipart = new MimeMultipart();
// 添加邮件正文
BodyPart contentPart = new MimeBodyPart();
contentPart.setContent(sendHtml, "text/html;charset=UTF-8");
multipart.addBodyPart(contentPart);
// 添加附件的内容
if (attachment != null) {
BodyPart attachmentBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(attachment);
attachmentBodyPart.setDataHandler(new DataHandler(source));
// 网上流传的解决文件名乱码的方法，其实用MimeUtility.encodeWord就可以很方便的搞定
// 这里很重要，通过下面的Base64编码的转换可以保证你的中文附件标题名在发送时不会变成乱码
//sun.misc.BASE64Encoder enc = new sun.misc.BASE64Encoder();
//messageBodyPart.setFileName("=?GBK?B?" + enc.encode(attachment.getName().getBytes()) + "?=");
//MimeUtility.encodeWord可以避免文件名乱码
attachmentBodyPart.setFileName(MimeUtility.encodeWord(attachment.getName()));
multipart.addBodyPart(attachmentBodyPart);
}
// 将multipart对象放到message中
message.setContent(multipart);
// 保存邮件
message.saveChanges();
transport = session.getTransport("smtp");
// smtp验证，就是你用来发邮件的邮箱用户名密码
transport.connect(mailHost, sender_username, sender_password);
// 发送
transport.sendMessage(message, message.getAllRecipients());
System.out.println("send success!");
} catch (Exception e) {
e.printStackTrace();
} finally {
if (transport != null) {
try {
transport.close();
} catch (MessagingException e) {
e.printStackTrace();
}
}
}
}
public static void main(String[] args) {
JavaMailWithAttachment se = new JavaMailWithAttachment(true);
File affix = new File("c:\\测试-test.txt");
se.doSendHtmlEmail("邮件主题", "邮件内容", "xxx@XXX.com", affix);//
}
}
java显示附件链接的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于、java显示附件链接的信息别忘了在本站进行查找喔。
发布于：2022-12-02，除非注明，否则均为原创文章，转载请注明出处。