Replace attachment when uploading a new attachment

问题

I have a simple form and body field. when user upload an attachment I want to remove any attachment already in the body field of the document. how can I do this in my save button.

I have tried to set the properites on the fileUpload control to always change the filename to tha same name but this does not replace the file, instead it adds a new file and add a new sequential number to it

<xp:fileUpload id="fileUpload1" value="#{userdoc.Body}" filename="profile"     seUploadname="false"></xp:fileUpload>

I have also tried to loop all embedded attachments in body field before before save, and all attachments are then removed, but my new attachment is not added.

回答1:

A little late, but in case anyone gets here just as I did through Google...

There's also another option: a NotesXSPDocument.getAttachmentList("rtitem") returns a list of attachments in the document. Each entry is of type DominoDocument.AttachmentValueHolder which has a getState() property that returns if a file was already in the document or just added. To remove the file that was already in the document you could add this SSJS code to a save button (assuming "files" is the name of the richtext item holding the files):

var attList = docFile.getAttachmentList("files");

for(var i=0; i<attList.size(); i++) {
  var att = attList.get(i);

  if (att.getState()==0) {      //STATE_INDOCUMENT: this is the 'old' file: remove it
    docFile.removeAttachment("files", att.getName() );
  } else if (att.getState()==1) {       //STATE_ADDED: this is the new file
           //leave it           
  } 
}

回答2:

This can be done by removing all attachments first (use the removeAllAttachments function from NotesXSPDocument object) and then attach the uploaded file manually to the richtext item.

This SSJS code has to be added to beforeRenderResponse-event of your XPage / Custom Control:

var con = facesContext.getExternalContext();
var request:com.sun.faces.context.MyHttpServletRequestWrapper = con.getRequest();
var map:java.util.Map = request.getParameterMap();
var fileDataName = getClientId('fileUpload1') ;
var fileData:com.ibm.xsp.http.UploadedFile = map.get( fileDataName );
if( fileData == null ){
    return;
}

var tempFile:java.io.File = fileData.getServerFile();
var correctedFile = new java.io.File( tempFile.getParentFile().getAbsolutePath() + 
    java.io.File.separator + fileData.getClientFileName() ); 

var success = tempFile.renameTo(correctedFile);
try{
    document1.removeAllAttachments("Body");
}catch(e){}

var rtFiles:NotesRichTextItem = null;
if(!(document1.getDocument().hasItem("Body"))){
    rtFiles = document1.getDocument().createRichTextItem("Body")
}else{
    rtFiles = document1.getDocument().getFirstItem("Body");
} 
rtFiles.embedObject(lotus.domino.local.EmbeddedObject.EMBED_ATTACHMENT, "",
    correctedFile.getAbsolutePath(), null); 
correctedFile.renameTo(tempFile);

document1.save();

The richtext item where the files are stored is "Body", the name of the datasource is "document1". The Fileupload control is "fileUpload1".

There are two limitations:

You cannot use this with a save button, you have to use a normal button / link which makes a full refresh (see what Serdar Basegmez wrote above)
You have to refresh the page after a upload once again, otherwise you will not see the uploaded file in a file download conrol (maybe a partial refresh to this control may work).

EDIT:

Sorry, my fault: You can use this code above in a submit button that saves the document. Then you don't have to refresh the page manually!

来源：https://stackoverflow.com/questions/9925666/replace-attachment-when-uploading-a-new-attachment

标签

file-upload

save

xpages

xsp