PeopleCode 处理压缩文件

 PeopleSoft中对文件附件的处理都是单个文件处理的，虽然在8.52版本新增了MAddAttachment(URLDestination, DirAndFilePrefix, Prompts, &UserFileArray, &ActualSizeArray, &DetailedReturnCodeArrayName [, MaxSize [, PreserveCase[, UploadPageTitle[, AllowLargeChunks[, StopOnError]]]]]) Function 实现了一次上传多个附件的功能，但是在下载附件的时候，还是只能单个下载，

这样就给客户的操作带来的很多不便，这篇文章来说明一下如何在PeopleCode中调用Java类来实现对文件的打包

REM ** The file I want to compress;

 

Local string &fileNameToZip = "c:\temp\blah.txt";

 

 

REM ** The internal zip file's structure -- internal location of blah.txt;

 

Local string &zipInternalPath = "my/internal/zip/folder/structure";

 

 

Local JavaObject &zip = CreateJavaObject("java.util.zip.ZipOutputStream", CreateJavaObject("java.io.FileOutputStream", "c:\temp\compressed.zip", True));

 

 

Local JavaObject &file = CreateJavaObject("java.io.File", &fileNameToZip);

 

REM ** We will read &fileNameToZip into a buffer and write it out to &zip;

 

Local JavaObject &buf = CreateJavaArray("byte[]", 1024);

 

 

Local number &byteCount;

 

Local JavaObject &in = CreateJavaObject("java.io.FileInputStream", &fileNameToZip);

 

 

Local JavaObject &zipEntry = CreateJavaObject("java.util.zip.ZipEntry", &zipInternalPath | "/" | &file.getName());

 

 

REM ** Make sure zip entry retains original modified date;

 

&zipEntry.setTime(&file.lastModified());

 

 

&zip.putNextEntry(&zipEntry);

 

 

&byteCount = &in.read(&buf);

 

 

While &byteCount > 0

 

&zip.write(&buf, 0, &byteCount);

 

&byteCount = &in.read(&buf);

 

End-While;

 

 

&in.close();

 

&zip.flush();

 

&zip.close();
这样就是实现了对文件的打包，不过为了代码重用，我们可以将这段代码写成一个Function

1. Function AddFileToZip(&zipInternalPath, &fileNameToZip, &zip)
2. Local JavaObject &file = CreateJavaObject("java.io.File", &fileNameToZip);
3. REM ** We will read &fileNameToZip into a buffer and write it out to &zip;
4. Local JavaObject &buf = CreateJavaArray("byte[]", 1024);
5. Local number &byteCount;
6. Local JavaObject &in = CreateJavaObject("java.io.FileInputStream", &fileNameToZip);
7. Local JavaObject &zipEntry = CreateJavaObject("java.util.zip.ZipEntry", &zipInternalPath | "/" | &file.getName());
8. REM ** Make sure zip entry retains original modified date;
9. &zipEntry.setTime(&file.lastModified());
10. &zip.putNextEntry(&zipEntry);
11. &byteCount = &in.read(&buf);
12. While &byteCount > 0
13. &zip.write(&buf, 0, &byteCount);
14. &byteCount = &in.read(&buf);
15. End-While;
16. &in.close();
17. End-Function;

然后每次使用的时候，只需要调用这个Function就可以了。

1. Local JavaObject &zip = CreateJavaObject("java.util.zip.ZipOutputStream", CreateJavaObject("java.io.FileOutputStream", "c:\temp\compressed.zip", True));
2. AddFileToZip("folder1", "c:\temp\file1.txt", &zip);
3. AddFileToZip("folder1", "c:\temp\file2.txt", &zip);
4. AddFileToZip("folder2", "c:\temp\file1.txt", &zip);
5. AddFileToZip("folder2", "c:\temp\file2.txt", &zip);
6. &zip.flush();
7. &zip.close();