I'm working in a framework that makes extensive use of excel documents, but the only imports it's using to do so are listed below:
java.io.*;
java.util.*;
java.util.regex.*;
java.util.zip.*;
javax.xml.parsers.*;
javax.xml.transform.*;
javax.xml.transform.dom.*;
javax.xml.transform.stream.*;
org.w3c.dom.*;
Because my workplace may not allow me to get the apache poi jar, how would I even begin to assemble an excel document using the above libraries?
The framework I'm working in is PRPC 7.x - most of the code it uses is proprietary and either hidden or incredibly inconvenient to get to, so it's rough trying to follow the breadcrumbs and mimic existing functionality.
如果您不被允许使用 apache,您仍然可以看看他们是如何做到的并模仿该代码。
There are two kinds of Excel
files. The one is BIFF
(Binary Interchange File Format) saved as *.xls
files. The other is Office Open XML
, a ZIP
ed directory structure containing XML
files saved as *.xlsx
files. The latter you can assemble using the showed libraries.
You can simply create a simple *.xlsx
file using Excel
. Then open this *.xlsx
file using a ZIP
software. Now you can have a look at the directory structure of that ZIP
archive and at the content of the XML
files in it.
Now the challenge is to create the needed XML
files keeping the proper relationships between them and to pack them as an ZIP
archive using the proper directory structure and then naming that ZIP
archive *.xlsx
.
Belive me, it is a challenge ;-).
通过他们的OOTB activtiy MSOParseExcel activtiy ...在那里他们压缩excel文件->解压缩它然后解析数据。
There are 2 OOTB activities using which we can generate the XLS. - ExportToExcel in @baseclass - ViewExportToExcel in Rule-Obj-HTML.
One of this should help, let me know if you need any more info.
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