我正在尝试解压缩一些zip文件，它的大小约为65兆。下面的代码段：
此方法实际上将文件解压缩：
public synchronized void execute(Path zipFile) {
final ProcessBuilder builder = new ProcessBuilder("/bin/unzip",zipFile.toAbsolutePath().toString(), "-d", dir.toAbsolutePath().toString());
FutureTask task = new FutureTask(new Callable() {
@Override public Integer call() {
try {
System.out.println("started and waiting");
int status = builder.start().waitFor();
System.out.println("status: " + status);
return status;
} catch (InterruptedException e) {
} catch (IOException e) {
}
return 0;
}
});
List> tasks = new ArrayList>();
tasks.add(task);
System.out.println("task added");
ExecutorService executor = Executors.newCachedThreadPool();
for (FutureTask t : tasks) {
executor.submit(t);
System.out.println("submitted");
}
executor.shutdown();
System.out.println("shutdown");
}
那个执行者/未来的东西只是为了确保我正确地做。在类Finder中调用此方法，该类在目录中查找zip文件并尝试将其解压缩。它基于此代码/javase/tutorial/essential/io/walk.html
具体来说：
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
if (find(file)) {
synchronized(Finder.class) {
executor.execute(file);
}
}
return CONTINUE;
}
现在的问题。真的很有趣。每当我通过此代码提取某些内容时，该zip文件实际上就会被解压缩，但是只有某些目录会被解压缩，而其他目录则不会。例如，我有一个目录为temp
foo和bar的zip文件，但解压缩后仅存在temp和foo目录，并且未提取bar。
输出是：
task added
submitted
started and waiting
shutdown
为什么没有“状态=某物”输出？
我不明白为什么会这样。当我手动解压缩时，它会正确解压缩。
//编辑
这成功了
@Override
public synchronized void execute(String file, String dest) {
ProcessBuilder pb = new ProcessBuilder("/bin/unzip","-qq", file, "-d", dest);
pb.redirectErrorStream(true);
try {
Process p = pb.start();
InputStream is = p.getInputStream();
InputStreamReader r = new InputStreamReader(is);
BufferedReader in = new BufferedReader(r);
String line;
while ((line = in.readLine()) != null) {
// because of the -qq option, it does actually write out nothing
System.out.println(line);
}
} catch (IOException ex) {
System.err.println(ex.getMessage());
}
}
