通过MIME将多个文件附加到Lotus Domino中的文档 [英] Attaching multiple files through MIMEs to a document in Lotus Domino

问题描述

在我们的企业应用程序中，我们需要将文件附加到文档中.我们在字节数组中具有文件名和文件内容.我找到了一种使用MIME将文件附加到文档的解决方案:

In our enterprise application we need to attach files to a document. We have the filename and the content of the file in a byte array. I found a solution to attach a file to a document with MIMEs:

    final MIMEEntity body = document.createMIMEEntity(fileName);
    final MIMEHeader bodyHeader = body.createHeader("Content-Disposition");

    final boolean isHeaderValSet = bodyHeader.setHeaderVal("attachment; filename=\"" + fileName + "\"");
    if (!isHeaderValSet) {
        throw new ComponentException("Could not set MIME header value.");
    }

    body.setContentFromBytes(fileContentOutput, mimeType, MIMEEntity.ENC_IDENTITY_BINARY);
    final boolean saveSuccessful = document.save();
    if (!saveSuccessful) {
        throw new Exception("Cannot attach file " + fileName + "to document: " + documentUniversalId);
    }

此方法似乎适用于文件，但是当我尝试上传另一个文件时，出现以下异常:

This method seems to work for a file, but when I try to upload another one I get the following exception:

NotesException:项目主体已经存在

NotesException: Item body already exists

当您只有文件名和字节数组中的内容时，是否可以将多个文件附加到文档?

Is there a way to attach multiple files to a document, when you only have the name of the file and the contents in a byte array?

推荐答案

在创建称为"body"的父" MIMEEntity的第一行.然后在一个循环中，为要包括的所有文件创建子MIMEentities:

Keep the first line where you create the "parent" MIMEEntity called body. Then in a loop, create child MIMEentities for all the files you wish to include:

final MIMEEntity child = body.CreateChildEntity;
child.setHeaderVal("attachment; filename=\"" + fileName + "\"");
child.createHeader("Content-Disposition");
child.setContentFromBytes(fileContentOutput, mimeType, MIMEEntity.ENC_IDENTITY_BINARY);

CreateChildEntity

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