如何使用 java 从 .nsf(lotus notes) 文件中获取所有附件

Question

后续步骤：

把我的莲花笔记的背面作为sample.nsf

然后尝试从sample.nsf中读取附件

代码 sn-p：

Database db = session.getDatabase("","C:\\Projects\\NotesToJava\\sample.nsf");
DocumentCollection dc = db.getAllDocuments();
Document doc = dc.getFirstDocument();

while (doc != null) {
    RichTextItem body = (RichTextItem) doc.getFirstItem("Body");

    if (body.getEmbeddedObject("Request.xlsx") != null)
         System.out.println("Found BPM_Dev_Access_Request.xlsx in " + doc.getItemValueString("Subject"));

    doc = dc.getNextDocument();
}

Answer 1

无需使用evaluate，在 Lotus Designer 帮助中查找extractFile

来自 Lotus 帮助：

import lotus.domino.*;
import java.util.Vector;
import java.util.Enumeration;
public class JavaAgent extends AgentBase {
  public void NotesMain() {
    try {
      Session session = getSession();
      AgentContext agentContext = session.getAgentContext();
      // (Your code goes here) 
      Database db = agentContext.getCurrentDatabase();
      DocumentCollection dc = db.getAllDocuments();
      Document doc = dc.getFirstDocument();
      boolean saveFlag = false;
      while (doc != null) {
        RichTextItem body = 
        (RichTextItem)doc.getFirstItem("Body");
        System.out.println(doc.getItemValueString("Subject"));
        Vector v = body.getEmbeddedObjects();
        Enumeration e = v.elements();
        while (e.hasMoreElements()) {
          EmbeddedObject eo = (EmbeddedObject)e.nextElement();
          if (eo.getType() == EmbeddedObject.EMBED_ATTACHMENT) {
            eo.extractFile("c:\\extracts\\" + eo.getSource());
            eo.remove();
            saveFlag = true;
            }
        }
        if (saveFlag) {
          doc.save(true, true);
          saveFlag = false;
          }
        doc = dc.getNextDocument();
      }
    } catch(NotesException e) {
      System.out.println(e.id + " " + e.text);
      e.printStackTrace();
    }
  }
}

Answer 2

您需要从每个文档中获取附件，而不是 EmbeddedObjects。像这样的：

import java.util.Iterator;

import lotus.domino.*;

public final class DocAttachmentParser implements Iterator {

private Session s;
private Document doc;
private Double count ;
private Iterator attIterator = null;
public  Double getCount() {
    return count;
}
public  DocAttachmentParser(Session s, Document doc) throws NotesException {
        this.s  = s;
        this.doc = doc;
        if (s!=null && doc !=null){
            this.count = (Double) s.evaluate("@Attachments", doc).elementAt(0);
            if (count.intValue() > 0){
                attIterator = s.evaluate("@AttachmentNames", doc).iterator();
                }
        }

}
    public boolean hasNext() {
        return count.intValue() > 0 ? attIterator.hasNext(): false;
    }

    public Object next() {
        return count.intValue() > 0 ? attIterator.next(): null;
    }
    private String nextAttName(){
        return count.intValue() > 0 ? attIterator.next().toString(): null;
    }

    public void remove() {
        if (count.intValue() > 0) attIterator.remove();
    }

    public String getAll(){

        StringBuilder sb = new StringBuilder();
        if (count.intValue()>0){

            while (hasNext()) {
                sb.append(nextAttName());
            }
        }

        return sb.toString();
    }

}

Answer 3

为了从笔记文档中获取所有附件，然后我编写了这个方法（我的课程的一部分）。 此方法获取文档并从 Notes 文档中提取附件（富文本字段）。此类还可以帮助您了解考虑示例：在两个文档中，如果有相同的附件，则仅提取一个。

在这里你只需要设置“filePath”，你必须提取你的附件。

public boolean export(Document doc ) throws NotesException { 

if (doc.hasEmbedded()) {
        Vector<Item> allItems;
        allItems = doc.getItems();
        HashSet<String> attNames = new HashSet<String>();

        for (int i = 0; i < allItems.size(); i++) {
            Item item = allItems.get(i);
            if (item.getType() == Item.RICHTEXT) {
                RichTextItem riItem = (RichTextItem) item;
                Vector emb = riItem.getEmbeddedObjects();
                String[] doublette = new String[emb.size()];
                Set<String> atts = new HashSet<String>();
                for (int j = 0; j < emb.size(); j++) {
                    EmbeddedObject embObj = (EmbeddedObject) emb.get(j);
                    if (!attNames.contains(embObj.getName())) {
                        attNames.add(embObj.getName());
                        StringBuffer test = new StringBuffer(
                                embObj.getSource());
                        test.append('-');
                        test.append(embObj.getName());
                        test.append('-');
                        test.append(embObj.getFileSize());
                        String attDesc = test.toString();
                        if (atts.contains(attDesc)) {
                            doublette[j] = attDesc;
                        } else {
                            doublette[j] = "";
                            atts.add(attDesc);
                        }

                    } 

                }

                for (int j = 0; j < emb.size(); j++) {
                    try {
                        EmbeddedObject embObj = (EmbeddedObject) emb.get(j);
                        String itemName = riItem.getName();
                        bOk = extractFile(embObj, itemName);
                        embObj.recycle();
                    } catch (NotesException e) {
                        bOk = false;
                        if (!"".equals(doublette[j])) {
                            bOk = true;
                            System.out.println(" duplicated attachment:")
                            log.append(doublette[j]);

                        }
                    }
                }
            }
        }



    }
   return bOk;
}

  private boolean extractFile(EmbeddedObject embObj, String itemName)
        throws NotesException {
    boolean bOk = true;
    if (embObj.getType() == EmbeddedObject.EMBED_ATTACHMENT) {

            String fileName = embObj.getName();      
                    String filePath = this.filesPath + fileName;
                    // Check if file already exists, then delete
                if (FileUtils.killFile(filePath, false, true, true)) {
                        embObj.extractFile(filePath);
                    } else {
                        bOk = false;
                        System.out.println(", error in kill: " + filePath);
                    }           
    }
    return bOk;
}

Answer 4

使用 Java 从 Lotus Notes 获取所有附件的简单方法。

Document doc = dc.getFirstDocument();
for(var att :session.evaluate("@AttachmentNames", doc)){
    if (att == null || att.toString().isEmpty()) {
          continue;
   }
   EmbeddedObject eb = doc.getAttachment(att.toString());
   System.out.println(eb.getName());
   System.out.println(eb.getFileSize());
   eb.extractFile("a.txt");// give file name what u  want
}