我有一个将富文本内容从一个文档复制到另一个文档的MIME的解决方案。见http://per.lausten.dk/blog/2012/12/xpages-dynamically-updating-rich-text-content-in-a-ckeditor.html。我在应用程序中使用它作为用户将内容模板插入新文档并使内容在CKEditor中即时显示的方式。将富文本和图像从一个文档复制到另一个文档的MIME
问题在于复制中不包含内嵌图像 - 只是对临时存储图像的引用。这意味着图像仅对当前会话中的当前用户可见。所以不是很有用。
如何包含图像？
更新2013年10月4日： 我仍在寻找解决方案。
我终于找到了它的工作。它更简单，甚至没有涉及MIME。诀窍是修改工作HTML图像标签包括base64编码的图像，使得SRC标签可以使用此格式（用GIF作为例子所示）：
src="data:image/gif;base64,<base64 encoded image>"
我已经有代码必要从富文本字段中获取HTML（请参阅我的问题中已提到的my blog post）。所以我需要的是用正确的src格式（包括base64编码图像）替换图像src标签。
以下代码获取HTML和通过每个包括图像的前进，并修改SRC标记：
String html = this.document.getValue(fieldName).toString();
if (null != html) {
final List<FileRowData> fileRowDataList = document.getEmbeddedImagesList(fieldName);
if (null != fileRowDataList) {
final Matcher matcher = imgRegExp.matcher(html);
while (matcher.find()) {
String src = matcher.group();
final String srcToken = "src=\"";
final int x = src.indexOf(srcToken);
final int y = src.indexOf("\"", x + srcToken.length());
final String srcText = src.substring(x + srcToken.length(), y);
for (FileRowData fileRowData : fileRowDataList) {
final String srcImage = fileRowData.getHref();
final String cidImage = ((AttachmentValueHolder) fileRowData).getCID();
final String typeImage = ((AttachmentValueHolder) fileRowData).getType();
final String persistentName = ((AttachmentValueHolder) fileRowData).getPersistentName();
// Add base 64 image inline (src="data:image/gif;base64,<name>")
if (srcText.endsWith(srcImage)) {
final String newSrc = src.replace(srcText, "data:" + typeImage + ";base64," + getBase64(persistentName));
html = html.replace(src, newSrc);
}
}
}
}
}
下面是BASE64编码图像的getBase64（）方法：
private String getBase64(final String fileName) {
String returnText = "";
try {
BASE64Encoder base64Enc = new BASE64Encoder();
ByteArrayOutputStream output = new ByteArrayOutputStream();
base64Enc.encode(this.getEmbeddedImageStream(fileName), output);
returnText = output.toString();
} catch (NotesException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return returnText;
}
部分代码来自emailBean by Tony McGuckin。
确实很酷。我使用内联图片激励了你吗？将正则表达式与Jericho解析器的性能和/或可维护性进行比较会有什么意思 – stwissel 2013-10-12 06:38:53
你能得到一个处理由DominoDocument.AttachmentValueHolder内嵌图片，请参阅http://public.dhe.ibm.com/software/dw/lotus/Domino-Designer/JavaDocs/XPagesExtAPI/8.5.2/com/ibm/xsp/model/domino/wrapped/DominoDocument.AttachmentValueHolder.html
我的博客上讲述里面Notes文档的附件，请参阅http://www.domino-weblog.nl/weblogs/Domino_Blog.nsf/dx/xpages-tip-get-easily-access-to-your-attachments-in-java.htm
我刚刚发现了Tony McGuckin的emailBean中的getBodyHTML方法，地址为http://openntf.org/XSnippets.nsf/snippet.xsp?id=emailbean-send-dominodocument-html-emails-cw-embedded-images-attachments-定制的HeaderFooter。它看起来很有趣。它也使用AttachmentValueHolder – 2013-02-27 20:24:21
可怕的黑客（你需要理清认证服务器名）
的SSJS（获得从视图源）
var unid = curRow.getUniversalID();
var body = getComponent("body1");
var magic = new demo.HTMLMagic();
magic.doMagic(database, unid, body);
Java的
package demo;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import net.htmlparser.jericho.Attribute;
import net.htmlparser.jericho.Attributes;
import net.htmlparser.jericho.HTMLElementName;
import net.htmlparser.jericho.OutputDocument;
import net.htmlparser.jericho.Source;
import net.htmlparser.jericho.StartTag;
import lotus.domino.Database;
import lotus.domino.NotesException;
import com.ibm.misc.BASE64Encoder;
import com.ibm.xsp.component.xp.XspInputRichText;
import com.ibm.xsp.http.IMimeMultipart;
import com.ibm.xsp.model.domino.wrapped.DominoRichTextItem;
public class HTMLMagic {
private HttpClient httpClient = null;
private HttpHost httpHost = null;
//TODO: that needs to be resolved smarter
private static final String HOSTNAME = "localhost";
public void doMagic(final Database database, final String unid, final XspInputRichText body) throws NotesException,
ClientProtocolException, IOException {
final String docURL = "http://" + HOSTNAME + "/__" + database.getReplicaID() + ".nsf/0/" + unid + "/Body?OpenField";
final String fixedHTML = this.fixHTML(docURL);
IMimeMultipart result = DominoRichTextItem.convertToMime("-- copied text--<br />" + fixedHTML);
body.setValue(result);
}
private String fixHTML(final String rawHTMLstring) throws ClientProtocolException, IOException {
HttpHost target = this.getHttpHost();
HttpClient client = this.getHttpClient();
HttpGet get = new HttpGet(rawHTMLstring);
HttpResponse response = client.execute(target, get);
InputStream data = response.getEntity().getContent();
Source rawHTML = new Source(data);
OutputDocument outputDocument = new OutputDocument(rawHTML);
StringBuilder sb = new StringBuilder();
String tagName = HTMLElementName.IMG;
String attName = "src";
List<StartTag> links = rawHTML.getAllStartTags(tagName);
for (StartTag onelink : links) {
String href = onelink.getAttributeValue(attName);
if (href != null) {
String replace = this.urltoData(href);
if (replace != null) {
sb.setLength(0);
sb.append("<");
sb.append(tagName);
sb.append(" ");
sb.append(attName);
sb.append("=\"");
sb.append(replace);
sb.append("\"");
Attributes atts = onelink.getAttributes();
if (!atts.isEmpty()) {
for (int i = 0; i < atts.size(); i++) {
Attribute att = atts.get(i);
if (!att.getName().equals(attName)) {
sb.append(" ");
sb.append(att.getName());
sb.append("=\"");
sb.append(att.getValue());
sb.append("\" ");
}
}
}
sb.append(">");
outputDocument.replace(onelink, sb.toString());
}
}
}
return outputDocument.toString();
}
private HttpClient getHttpClient() {
if (this.httpClient == null) {
// general setup
SchemeRegistry supportedSchemes = new SchemeRegistry();
// Register the "http" protocol scheme, it is required
// by the default operator to look up socket factories.
supportedSchemes.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
// prepare parameters
HttpParams params = new BasicHttpParams();
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(params, "UTF-8");
HttpProtocolParams.setUseExpectContinue(params, true);
ClientConnectionManager connMgr = new ThreadSafeClientConnManager(params, supportedSchemes);
this.httpClient = new DefaultHttpClient(connMgr, params);
}
return this.httpClient;
}
private HttpHost getHttpHost() {
if (this.httpHost == null) {
this.httpHost = new HttpHost(HOSTNAME, 80, "http");
}
return this.httpHost;
}
private String urltoData(final String href) throws ClientProtocolException, IOException {
StringBuilder sb = new StringBuilder();
sb.append("data:image/");
sb.append(href.substring(href.lastIndexOf("FieldElemFormat=") + 1));
sb.append(";base64,");
// Here go the Image data
HttpHost target = this.getHttpHost();
HttpClient client = this.getHttpClient();
HttpGet get = new HttpGet(href);
HttpResponse response = client.execute(target, get);
InputStream data = response.getEntity().getContent();
BASE64Encoder encoder = new BASE64Encoder();
OutputStream output = new ByteArrayOutputStream();
encoder.encode(data, output);
sb.append(output.toString());
output.close();
return sb.toString();
}
}
会好奇，如果你的作品。 Notes客户端无法显示内联HTML图像
需要一些MIME魔术。我尝试为你做点什么。 – stwissel 2013-10-07 09:18:25