我正在研究一种将压缩文件解压缩并返回包含所有解压缩文件的新文件/目录的方法。目标是然后获取该目录并从中提取一个 excel 文档,然后将其转换为我构建的 Workbook 类(完全单元测试并且工作正常)。问题是我收到以下异常:
java.util.zip.ZipException: error in opening zip file
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:215)
at java.util.zip.ZipFile.<init>(ZipFile.java:145)
at java.util.zip.ZipFile.<init>(ZipFile.java:159)
at com.atd.core.datamigrator.BulkImageUpload.createWorkbook(BulkImageUpload.java:54)
at com.atd.core.datamigrator.BulkImageUpload.importImages(BulkImageUpload.java:38)
at com.atd.core.datamigrator.BulkImageUpload.main(BulkImageUpload.java:236)
这是我的代码
private Workbook createWorkbook(File file) {
File unZipedFile = unZip(file);
File[] files = unZipedFile.listFiles();
Workbook wBook = null;
for (int i = 0; i < files.length; i++) {
if (files[i].getName().contains(".xls")) {
try {
File f = files[i];
ZipFile zip = new ZipFile(f);
wBook = new Workbook(zip);
} catch (IOException e) {
e.printStackTrace();
}
break;
}
}
return wBook;
}
private File unZip(File input) {
File output = new File("unzippedFile");
OutputStream out = null;
try {
ZipFile zipFile = new ZipFile(input);
Enumeration<? extends ZipEntry> entries = zipFile.entries();
while (entries.hasMoreElements()) {
ZipEntry entry = entries.nextElement();
File entryDestination = new File(output, entry.getName());
entryDestination.getParentFile().mkdirs();
InputStream in = zipFile.getInputStream(entry);
ZipInputStream zis = new ZipInputStream(in);
out = new FileOutputStream(entryDestination);
out.write(zis.read());
out.flush();
out.close();
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return output;
}
我知道这是 unzip 方法的问题,因为当我使用 File f = new File("some path") 而不是使用解压缩文件时,它可以正常工作。
此外,文件 I/O 从来都不是我的强项,所以要友善 :)