java工具类mht转html格式文件



package top.fqq.utils;import javax.activation.DataHandler;import javax.mail.MessagingException;import javax.mail.Multipart;import javax.mail.Session;import javax.mail.internet.MimeBodyPart;import javax.mail.internet.MimeMessage;import javax.mail.internet.MimeMultipart;import javax.mail.internet.MimePartDataSource;import java.io.*;import java.util.Enumeration;/** * mht转html格式文件 * * @修改人 FQQ(www.first.top) * @版本号 1.0.0 @修改日期： 2016年11月02日 上午10:48:20 * @see [相关类/方法] * @since [产品/模块版本] */public class Mht2HtmlUtil {    public static void main(String[] args) {        Mht2HtmlUtil.mht2html("d:\\51job_111.mht", "d:\\test2222222222.htm");    }    /**     * 将 mht文件转换成 html文件     *     * @param s_SrcMht     * @param s_DescHtml     */    public static void mht2html(String s_SrcMht, String s_DescHtml) {        try {            InputStream fis = new FileInputStream(s_SrcMht);            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);                // 获取mht文件内容代码的编码                String strEncodng = getEncoding(bp1);                // 获取mht文件的内容                String strText = getHtmlText(bp1, strEncodng);                if (strText == null)                    return;                // 创建以mht文件名称的文件夹，主要用来保存资源文件。                File parent = null;                if (mp.getCount() > 1) {                   // parent = new File(new File(s_DescHtml).getAbsolutePath() + ".files");                    parent = new File(new File(s_DescHtml).getAbsolutePath());                    parent.mkdirs();                    if (!parent.exists()) { // 创建文件夹失败的话则退出                        return;                    }                }                // FOR中代码 主要是保存资源文件及替换路径                for (int i = 1; i < mp.getCount(); ++i) {                    MimeBodyPart bp = (MimeBodyPart) mp.getBodyPart(i);                    // 获取资源文件的路径                    // 例（获取： http://xxx.com/abc.jpg）                    String strUrl = getResourcesUrl(bp);                    if (strUrl == null || strUrl.length() == 0)                        continue;                    DataHandler dataHandler = bp.getDataHandler();                    MimePartDataSource source = (MimePartDataSource) dataHandler                            .getDataSource();                    // 获取资源文件的绝对路径                    String FilePath = parent.getAbsolutePath() + File.separator                            + getName(strUrl, i);                    File resources = new File(FilePath);                    // 保存资源文件                    if (SaveResourcesFile(resources, bp.getInputStream())) {                        // 将远程地址替换为本地地址 如图片、JS、CSS样式等等                        strText = strText.replace(strUrl,                                resources.getAbsolutePath());                    }                }                // 最后保存HTML文件                SaveHtml(strText, s_DescHtml, strEncodng);            }        } catch (Exception e) {            e.printStackTrace();        }    }    /**     * 获取mht文件内容中资源文件的名称     *     * @param strName     * @param ID     * @return     */    public static String getName(String strName, int ID) {        char separator1 = '/';        char separator2 = '\\';        // 将换行替换        strName = strName.replaceAll("\r\n", "");        // 获取文件名称        if (strName.lastIndexOf(separator1) >= 0) {            return strName.substring(strName.lastIndexOf(separator1) + 1);        }        if (strName.lastIndexOf(separator2) >= 0) {            return strName.substring(strName.lastIndexOf(separator2) + 1);        }        return "";    }    /**     * 将提取出来的html内容写入保存的路径中。     *     * @param s_HtmlTxt     * @param s_HtmlPath     * @param s_Encode     */    public static boolean SaveHtml(String s_HtmlTxt, String s_HtmlPath,                                   String s_Encode) {        try {            Writer out = null;            out = new OutputStreamWriter(                    new FileOutputStream(s_HtmlPath, false), s_Encode);            out.write(s_HtmlTxt);            out.close();        } catch (Exception e) {            return false;        }        return true;    }    /**     * 保存网页中的JS、图片、CSS样式等资源文件     *     * @param SrcFile     *            源文件     * @param inputStream     *            输入流     * @return     */    private static boolean SaveResourcesFile(File SrcFile,                                             InputStream inputStream) {        if (SrcFile == null || inputStream == null) {            return false;        }        BufferedInputStream in = null;        FileOutputStream fio = null;        BufferedOutputStream osw = null;        try {            in = new BufferedInputStream(inputStream);            fio = new FileOutputStream(SrcFile);            osw = new BufferedOutputStream(new DataOutputStream(fio));            int index = 0;            byte[] a = new byte[1024];            while ((index = in.read(a)) != -1) {                osw.write(a, 0, index);            }            osw.flush();            return true;        } catch (Exception e) {            e.printStackTrace();            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();                return false;            }        }    }    /**     * 获取mht文件里资源文件的URL路径     *     * @param bp     * @return     */    private static String getResourcesUrl(MimeBodyPart bp) {        if (bp == null) {            return 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();                }            }            return null;        } catch (MessagingException e) {            return null;        }    }    /**     * 获取mht文件中的内容代码     *     * @param bp     * @param strEncoding     *            该mht文件的编码     * @return     */    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) {                System.out.println(strLine);                strHtml.append(strLine + "\r\n");            }            br.close();            r.close();            textStream.close();            return strHtml.toString();        } catch (Exception e) {            e.printStackTrace();        } finally {            try {                if (br != null)                    br.close();                if (buff != null)                    buff.close();                if (textStream != null)                    textStream.close();            } catch (Exception e) {            }        }        return null;    }    /**     * 获取mht网页文件中内容代码的编码     *     * @param bp     * @return     */    private static String getEncoding(MimeBodyPart bp) {        if (bp == null) {            return null;        }        try {            Enumeration list = bp.getAllHeaders();            while (list.hasMoreElements()) {                javax.mail.Header head = (javax.mail.Header) list.nextElement();                if (head.getName().equalsIgnoreCase("Content-Type")) {                    String strType = head.getValue();                    int pos = strType.indexOf("charset=");                    if (pos >= 0) {                        String strEncoding = strType.substring(pos + 8,                                strType.length());                        if (strEncoding.startsWith("\"")                                || strEncoding.startsWith("\'")) {                            strEncoding = strEncoding.substring(1,                                    strEncoding.length());                        }                        if (strEncoding.endsWith("\"")                                || strEncoding.endsWith("\'")) {                            strEncoding = strEncoding.substring(0,                                    strEncoding.length() - 1);                        }                        if (strEncoding.toLowerCase().compareTo("gb2312") == 0) {                            strEncoding = "gbk";                        }                        return strEncoding;                    }                }            }        } catch (MessagingException e) {            e.printStackTrace();        }        return null;    }}