本文主要是介绍使用java将网页保存为mht格式，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
可以用做csdn备份，这个方法扩充以后做个csdn备份工具倒是不错
package com.tag;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.*;
import org.htmlparser.Parser;
import org.htmlparser.Tag;
import org.htmlparser.filters.TagNameFilter;
import org.htmlparser.lexer.Lexer;
import org.htmlparser.lexer.Page;
import org.htmlparser.util.DefaultParserFeedback;
import org.htmlparser.util.NodeList;
import org.htmlparser.util.ParserException;
import toptrack.tools.JQuery;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.MimetypesFileTypeMap;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimePartDataSource;
/**
* mht文件解析类
* @author dl
*/
public class Html2MHTCompiler {
private URL strWeb = null; /**网页地址*/
private String strText = null; /**网页文本内容*/
private String strFileName = null; /**本地文件名*/
private String strEncoding = null; /**网页编码*/
//mht格式附加信息
private String from = "dongle2001@126.com";
private String to;
private String subject = "mht compile";
private String cc;
private String bcc;
private String smtp = "localhost";
public static void main(String[] args) {
String strUrl = "http://www.mtime.com/my/tropicofcancer/blog/843555/";
String strEncoding = "utf-8";
String strText = JQuery.getHtmlText(strUrl, strEncoding, null);
if (strText == null)
return;
Html2MHTCompiler h2t = new Html2MHTCompiler(strText, strUrl, strEncoding, "test.mht");
h2t.compile();
//Html2MHTCompiler.mht2html("test.mht", "a.html");
}
/**
*<br>方法说明：初始化
*<br>输入参数：strText 网页文本内容; strUrl 网页地址; strEncoding 网页编码; strFileName 本地文件名
*<br>返回类型：
*/
public Html2MHTCompiler(String strText, String strUrl, String strEncoding, String strFileName) {
// TODO Auto-generated constructor stub
try {
strWeb = new URL(strUrl);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return;
}
this.strText = strText;
this.strEncoding = strEncoding;
this.strFileName = strFileName;
}
/**
*<br>方法说明：执行下载操作
*<br>输入参数：
*<br>返回类型：
*/
public boolean compile() {
if (strWeb == null || strText == null || strFileName == null || strEncoding == null)
return false;
HashMap urlMap = new HashMap();
NodeList nodes = new NodeList();
try {
Parser parser = createParser(strText);
parser.setEncoding(strEncoding);
nodes = parser.parse(null);
} catch (ParserException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
extractAllScriptNodes(nodes);
ArrayList urlScriptList = extractAllScriptNodes(nodes, urlMap);
ArrayList urlImageList = extractAllImageNodes(nodes, urlMap);
for (Iterator iter = urlMap.entrySet().iterator(); iter.hasNext();) {
Map.Entry entry = (Map.Entry) iter.next();
String key = (String)entry.getKey();
String val = (String)entry.getValue();
strText = JHtmlClear.replace(strText, val, key);
}
try {
createMhtArchive(strText, urlScriptList, urlImageList);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
}
return true;
}
/**
*<br>方法说明：建立HTML parser
*<br>输入参数：inputHTML 网页文本内容
*<br>返回类型：HTML parser
*/
private Parser createParser(String inputHTML) {
// TODO Auto-generated method stub
Lexer mLexer = new Lexer(new Page(inputHTML));
return new Parser(mLexer, new DefaultParserFeedback(DefaultParserFeedback.QUIET));
}
/**
*<br>方法说明：抽取基础URL地址
*<br>输入参数：nodes 网页标签集合
*<br>返回类型：
*/
private void extractAllScriptNodes(NodeList nodes) {
NodeList filtered = nodes.extractAllNodesThatMatch(new TagNameFilter(
"BASE"), true);
if (filtered != null && filtered.size() > 0) {
Tag tag = (Tag) filtered.elementAt(0);
String href = tag.getAttribute("href");
if (href != null && href.length() > 0) {
try {
strWeb = new URL(href);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
/**
*<br>方法说明：抽取网页包含的css,js链接
*<br>输入参数：nodes 网页标签集合; urlMap 已存在的url集合
*<br>返回类型：css,js链接的集合
*/
private ArrayList extractAllScriptNodes(NodeList nodes, HashMap urlMap) {
ArrayList urlList = new ArrayList();
NodeList filtered = nodes.extractAllNodesThatMatch(new TagNameFilter("script"), true);
for (int i = 0; i < filtered.size(); i++) {
Tag tag = (Tag) filtered.elementAt(i);
String src = tag.getAttribute("src");
// Handle external css file's url
if (src != null && src.length() > 0) {
String innerURL = src;
String absoluteURL = makeAbsoluteURL(strWeb, innerURL);
if (absoluteURL != null && !urlMap.containsKey(absoluteURL)) {
urlMap.put(absoluteURL, innerURL);
ArrayList urlInfo = new ArrayList();
urlInfo.add(innerURL);
urlInfo.add(absoluteURL);
urlList.add(urlInfo);
}
tag.setAttribute("src", absoluteURL);
}
}
filtered = nodes.extractAllNodesThatMatch(new TagNameFilter("link"), true);
for (int i = 0; i < filtered.size(); i++) {
Tag tag = (Tag) filtered.elementAt(i);
String type = (tag.getAttribute("type"));
String rel = (tag.getAttribute("rel"));
String href = tag.getAttribute("href");
boolean isCssFile = false;
if (rel != null) {
isCssFile = rel.indexOf("stylesheet") != -1;
} else if (type != null) {
isCssFile |= type.indexOf("text/css") != -1;
}
// Handle external css file's url
if (isCssFile && href != null && href.length() > 0) {
String innerURL = href;
String absoluteURL = makeAbsoluteURL(strWeb, innerURL);
if (absoluteURL != null && !urlMap.containsKey(absoluteURL)) {
urlMap.put(absoluteURL, innerURL);
ArrayList urlInfo = new ArrayList();
urlInfo.add(innerURL);
urlInfo.add(absoluteURL);
urlList.add(urlInfo);
}
tag.setAttribute("href", absoluteURL);
}
}
return urlList;
}
/**
*<br>方法说明：抽取网页包含的图像链接
*<br>输入参数：nodes 网页标签集合; urlMap 已存在的url集合
*<br>返回类型：图像链接集合
*/
private ArrayList extractAllImageNodes(NodeList nodes, HashMap urlMap) {
ArrayList urlList = new ArrayList();
NodeList filtered = nodes.extractAllNodesThatMatch(new TagNameFilter("IMG"), true);
for (int i = 0; i < filtered.size(); i++) {
Tag tag = (Tag) filtered.elementAt(i);
String src = tag.getAttribute("src");
// Handle external css file's url
if (src != null && src.length() > 0) {
String innerURL = src;
String absoluteURL = makeAbsoluteURL(strWeb, innerURL);
if (absoluteURL != null && !urlMap.containsKey(absoluteURL)) {
urlMap.put(absoluteURL, innerURL);
ArrayList urlInfo = new ArrayList();
urlInfo.add(innerURL);
urlInfo.add(absoluteURL);
urlList.add(urlInfo);
}
tag.setAttribute("src", absoluteURL);
}
}
return urlList;
}
/**
*<br>方法说明：相对路径转绝对路径
*<br>输入参数：strWeb 网页地址; innerURL 相对路径链接
*<br>返回类型：绝对路径链接
*/
public static String makeAbsoluteURL(URL strWeb, String innerURL) {
// TODO Auto-generated method stub
//去除后缀
int pos = innerURL.indexOf("?");
if (pos != -1) {
innerURL = innerURL.substring(0, pos);
}
if (innerURL != null
&& innerURL.toLowerCase().indexOf("http") == 0) {
System.out.println(innerURL);
return innerURL;
}
URL linkUri = null;
try {
linkUri = new URL(strWeb, innerURL);
} catch (MalformedURLException e) {
//TODO Auto-generated catch block
e.printStackTrace();
return null;
}
String absURL = linkUri.toString();
absURL = JHtmlClear.replace(absURL, "../", "");
absURL = JHtmlClear.replace(absURL, "./", "");
System.out.println(absURL);
return absURL;
}
/**
*<br>方法说明：创建mht文件
*<br>输入参数：content 网页文本内容; urlScriptList 脚本链接集合; urlImageList 图片链接集合
*<br>返回类型：
*/
private void createMhtArchive(String content, ArrayList urlScriptList, ArrayList urlImageList) throws Exception {
//Instantiate a Multipart object
MimeMultipart mp = new MimeMultipart("related");
Properties props = new Properties();
props.put("mail.smtp.host", smtp);
Session session = Session.getDefaultInstance(props, null);
MimeMessage msg = new MimeMessage(session);
// set mailer
msg.setHeader("X-Mailer", "Code Manager .SWT");
// set from
if (from != null) {
msg.setFrom(new InternetAddress(from));
}
// set subject
if (subject != null) {
msg.setSubject(subject);
}
// to
if (to != null) {
InternetAddress[] toAddresses = getInetAddresses(to);
msg.setRecipients(Message.RecipientType.TO, toAddresses);
}
// cc
if (cc != null) {
InternetAddress[] ccAddresses = getInetAddresses(cc);
msg.setRecipients(Message.RecipientType.CC, ccAddresses);
}
// bcc
if (bcc != null) {
InternetAddress[] bccAddresses = getInetAddresses(bcc);
msg.setRecipients(Message.RecipientType.BCC, bccAddresses);
}
//设置网页正文
MimeBodyPart bp = new MimeBodyPart();
bp.setText(content, strEncoding);
bp.addHeader("Content-Type", "text/html;charset=" + strEncoding);
bp.addHeader("Content-Location", strWeb.toString());
mp.addBodyPart(bp);
int urlCount = urlScriptList.size();
for (int i = 0; i < urlCount; i++) {
bp = new MimeBodyPart();
ArrayList urlInfo = (ArrayList) urlScriptList.get(i);
// String url = urlInfo.get(0).toString();
String absoluteURL = urlInfo.get(1).toString();
bp
.addHeader("Content-Location",
javax.mail.internet.MimeUtility
.encodeWord(java.net.URLDecoder
.decode(absoluteURL, strEncoding)));
DataSource source = new AttachmentDataSource(absoluteURL, "text");
bp.setDataHandler(new DataHandler(source));
mp.addBodyPart(bp);
}
urlCount = urlImageList.size();
for (int i = 0; i < urlCount; i++) {
bp = new MimeBodyPart();
ArrayList urlInfo = (ArrayList) urlImageList.get(i);
// String url = urlInfo.get(0).toString();
String absoluteURL = urlInfo.get(1).toString();
bp
.addHeader("Content-Location",
javax.mail.internet.MimeUtility
.encodeWord(java.net.URLDecoder
.decode(absoluteURL, strEncoding)));
DataSource source = new AttachmentDataSource(absoluteURL, "image");
bp.setDataHandler(new DataHandler(source));
mp.addBodyPart(bp);
}
msg.setContent(mp);
// write the mime multi part message to a file
msg.writeTo(new FileOutputStream(strFileName));
}
/**
*<br>方法说明：mht转html
*<br>输入参数：strMht mht文件路径; strHtml html文件路径
*<br>返回类型：
*/
public static void mht2html(String strMht, String strHtml) {
try {
//TODO readEmlFile
InputStream fis = new FileInputStream(strMht);
Session mailSession = Session.getDefaultInstance(System.getProperties(), null);
MimeMessage msg = new MimeMessage(mailSession, fis);
Object content = msg.getContent();
if (content instanceof Multipart) {
MimeMultipart mp = (MimeMultipart)content;
MimeBodyPart bp1 = (MimeBodyPart)mp.getBodyPart(0);
String strEncodng = getEncoding(bp1);
String strText = getHtmlText(bp1, strEncodng);
if (strText == null)
return;
File parent = null;
if (mp.getCount() > 1) {
parent = new File(new File(strHtml).getAbsolutePath() + ".files");
parent.mkdirs();
if (!parent.exists())
return;
}
for (int i = 1; i < mp.getCount(); ++i) {
MimeBodyPart bp = (MimeBodyPart)mp.getBodyPart(i);
String strUrl = getResourcesUrl(bp);
if (strUrl == null)
continue;
DataHandler dataHandler = bp.getDataHandler();
MimePartDataSource source = (MimePartDataSource)dataHandler.getDataSource();
File resources = new File(parent.getAbsolutePath() + File.separator + getName(strUrl, i));
if (saveResourcesFile(resources, bp.getInputStream()))
strText = JHtmlClear.replace(strText, strUrl, resources.getAbsolutePath());
}
saveHtml(strText, strHtml);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
*<br>方法说明：得到资源文件的name
*<br>输入参数：strName 资源文件链接, ID 资源文件的序号
*<br>返回类型：资源文件的本地临时文件名
*/
public static String getName(String strName, int ID) {
char separator = '/';
System.out.println(strName);
System.out.println(separator);
if( strName.lastIndexOf(separator) >= 0)
return format(strName.substring(strName.lastIndexOf(separator) + 1));
return "temp" + ID;
}
/**
*<br>方法说明：得到网页编码
*<br>输入参数：bp MimeBodyPart类型的网页内容
*<br>返回类型：MimeBodyPart里的网页内容的编码
*/
private static String getEncoding(MimeBodyPart bp) {
if (bp != null) {
try {
Enumeration list = bp.getAllHeaders();
while (list.hasMoreElements()) {
javax.mail.Header head = (javax.mail.Header)list.nextElement();
if (head.getName().compareTo("Content-Type") == 0) {
String strType = head.getValue();
int pos = strType.indexOf("charset=");
if (pos != -1) {
String strEncoding = strType.substring(pos + 8, strType.length());
if (strEncoding.toLowerCase().compareTo("gb2312") == 0) {
strEncoding = "gbk";
}
return strEncoding;
}
}
}
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return null;
}
/**
*<br>方法说明：得到资源文件url
*<br>输入参数：bp MimeBodyPart类型的网页内容
*<br>返回类型：资源文件url
*/
private static String getResourcesUrl(MimeBodyPart bp) {
if (bp != null) {
try {
Enumeration list = bp.getAllHeaders();
while (list.hasMoreElements()) {
javax.mail.Header head = (javax.mail.Header)list.nextElement();
if (head.getName().compareTo("Content-Location") == 0) {
return head.getValue();
}
}
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return null;
}
/**
*<br>方法说明：格式化文件名
*<br>输入参数：strName 文件名
*<br>返回类型：经过处理的符合命名规则的文件名
*/
private static String format(String strName) {
if (strName == null)
return null;
strName = strName.replaceAll(" ", " ");
String strText = "///:*?/"<>|^___FCKpd___0quot;;
for (int i = 0; i < strName.length(); ++i) {
String ch = String.valueOf(strName.charAt(i));
if (strText.indexOf(ch) != -1) {
strName = strName.replace(strName.charAt(i), '-');
}
}
return strName;
}
/**
*<br>方法说明：保存资源文件
*<br>输入参数：resources 要创建的资源文件; inputStream 要输入文件中的流
*<br>返回类型：boolean
*/
private static boolean saveResourcesFile(File resources, InputStream inputStream) {
if (resources == null || inputStream == null) {
return false;
}
BufferedInputStream in = null;
FileOutputStream fio = null;
BufferedOutputStream osw = null;
try {
in = new BufferedInputStream(inputStream);
fio = new FileOutputStream(resources);
osw = new BufferedOutputStream(new DataOutputStream(fio));
int b;
byte[] a = new byte[1024];
boolean isEmpty = true;
while ((b = in.read(a)) != -1) {
isEmpty = false;
osw.write(a, 0, b);
osw.flush();
}
osw.close();
fio.close();
in.close();
inputStream.close();
if (isEmpty)
resources.delete();
return true;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("解析mht失败");
return false;
} finally{
try {
if (osw != null)
osw.close();
if (fio != null)
fio.close();
if (in != null)
in.close();
if (inputStream != null)
inputStream.close();
} catch (Exception e) {
e.printStackTrace();
System.out.println("解析mht失败");
return false;
}
}
}
/**
*<br>方法说明：得到mht文件的标题
*<br>输入参数：mhtFilename mht文件名
*<br>返回类型：mht文件的标题
*/
public static String getTitle(String mhtFilename) {
try {
//TODO readEmlFile
InputStream fis = new FileInputStream(mhtFilename);
Session mailSession = Session.getDefaultInstance(System.getProperties(), null);
MimeMessage msg = new MimeMessage(mailSession, fis);
Object content = msg.getContent();
if (content instanceof Multipart) {
MimeMultipart mp = (MimeMultipart)content;
MimeBodyPart bp1 = (MimeBodyPart)mp.getBodyPart(0);
String strEncodng = getEncoding(bp1);
String strText = getHtmlText(bp1, strEncodng);
if (strText == null)
return null;
strText = strText.toLowerCase();
int pos1 = strText.indexOf("<title>");
int pos2 = strText.indexOf("</title>");
if (pos1 != -1 && pos2!= -1 && pos2 > pos1) {
return strText.substring(pos1 + 7, pos2).trim();
}
}
return null;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
/**
*<br>方法说明：得到html文本
*<br>输入参数：bp MimeBodyPart类型的网页内容; strEncoding 内容编码
*<br>返回类型：html文本
*/
private static String getHtmlText(MimeBodyPart bp, String strEncoding) {
InputStream textStream = null;
BufferedInputStream buff = null;
BufferedReader br = null;
Reader r = null;
try {
textStream = bp.getInputStream();
buff = new BufferedInputStream(textStream);
r = new InputStreamReader(buff, strEncoding);
br = new BufferedReader(r);
StringBuffer strHtml = new StringBuffer("");
String strLine = null;
while ((strLine = br.readLine()) != null) {
strHtml.append(strLine + "/r/n");
}
br.close();
r.close();
textStream.close();
return strHtml.toString();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally{
try{
if (br != null)
br.close();
if (buff != null)
buff.close();
if (textStream != null)
textStream.close();
}catch(Exception e){
System.out.println("解析mht失败");
}
}
return null;
}
/**
*<br>方法说明：保存html文件
*<br>输入参数：strText html内容; strHtml html文件名
*<br>返回类型：
*/
private static void saveHtml(String strText, String strHtml) {
try {
FileWriter fw = new FileWriter(strHtml);
fw.write(strText);
fw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("解析mht失败");
}
}
private InternetAddress[] getInetAddresses(String emails) throws Exception {
ArrayList list = new ArrayList();
StringTokenizer tok = new StringTokenizer(emails, ",");
while (tok.hasMoreTokens()) {
list.add(tok.nextToken());
}
int count = list.size();
InternetAddress[] addresses = new InternetAddress[count];
for (int i = 0; i < count; i++) {
addresses[i] = new InternetAddress(list.get(i).toString());
}
return addresses;
}
class AttachmentDataSource implements DataSource {
private MimetypesFileTypeMap map = new MimetypesFileTypeMap();
private String strUrl;
private String strType;
private byte[] dataSize = null;
/**
* This is some content type maps.
*/
private Map normalMap = new HashMap();
{
// Initiate normal mime type map
// Images
normalMap.put("image", "image/jpeg");
normalMap.put("text", "text/plain");
}
public AttachmentDataSource(String strUrl, String strType) {
this.strType = strType;
this.strUrl = strUrl;
strUrl = strUrl.trim();
strUrl = strUrl.replaceAll(" ", "%20");
dataSize = JQuery.downBinaryFile(strUrl, null);
}
/**
* Returns the content type.
*/
public String getContentType() {
return getMimeType(getName());
}
public String getName() {
char separator = File.separatorChar;
if( strUrl.lastIndexOf(separator) >= 0 )
return strUrl.substring(strUrl.lastIndexOf(separator) + 1);
return strUrl;
}
private String getMimeType(String fileName) {
String type = (String)normalMap.get(strType);
if (type == null) {
try {
type = map.getContentType(fileName);
} catch (Exception e) {
// TODO: handle exception
}
System.out.println(type);
// Fix the null exception
if (type == null) {
type = "application/octet-stream";
}
}
return type;
}
public InputStream getInputStream() throws IOException {
// TODO Auto-generated method stub
if (dataSize == null)
dataSize = new byte[0];
return new ByteArrayInputStream(dataSize);
}
public OutputStream getOutputStream() throws IOException {
// TODO Auto-generated method stub
return new java.io.ByteArrayOutputStream();
}
}
}
这篇关于使用java将网页保存为mht格式的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
