我正在尝试将文本文件添加到现有jar中。
这是它应该如何运作的:
JarFile A:运行时,会在JarFile B中添加一个文本文件。
JarFile B:运行时,它会从JarFile A添加的textfiel中读取一些配置选项。
以下是JarFileA为添加文件而执行的代码:
public static void updateZipFile(File zipFile, String targetPackage, File[] files) throws IOException {
// get a temp file
File tempFile = createTempFile(zipFile.getName(), null);
// delete it, otherwise you cannot rename your existing zip to it.
tempFile.delete();
boolean renameOk = zipFile.renameTo(tempFile);
if (!renameOk) {
throw new RuntimeException("Could not rename the file " + zipFile.getAbsolutePath() + " to " + tempFile.getAbsolutePath());
}
byte[] buf = new byte[1024];
ZipInputStream zin = new ZipInputStream(new FileInputStream(tempFile));
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));
ZipEntry entry = zin.getNextEntry();
while (entry != null) {
String name = entry.getName();
boolean notInFiles = true;
for (File f : files) {
if (f.getName().equals(name)) {
notInFiles = false;
break;
}
}
if (notInFiles) {
// Add ZIP entry to output stream.
out.putNextEntry(new ZipEntry(name));
// Transfer bytes from the ZIP file to the output file
int len;
while ((len = zin.read(buf)) > 0) {
out.write(buf, 0, len);
}
}
entry = zin.getNextEntry();
}
// Close the streams
zin.close();
for (File file : files) {
InputStream in = new FileInputStream(file);
// Add ZIP entry to output stream.
out.putNextEntry(new ZipEntry(targetPackage + File.separator + file.getName()));
// Transfer bytes from the file to the ZIP file
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
// Complete the entry
out.closeEntry();
in.close();
}
// Complete the ZIP file
out.close();
tempFile.delete();
}
这一切在Mac OS X上运行正常,但在Windows中它不起作用。它复制文件,但JarFileB无法读取这个新创建的文件。也许罐子腐败了?
非常感谢任何帮助。
感谢。