把360卸载了从网上找个最新的下载安装
为了安全最好还是重新安装下电脑系统息源于:华中红客安全网里面有更专业的详细电脑技术内容
JavaSE 1.7提供了相关的API,去监视文件或者文件夹的变动,主要的API都在java.nio.file下面,其大概流程如下:
package org.xdemo.superutil.j2se.filewatch
import static java.nio.file.LinkOption.NOFOLLOW_LINKS
import java.io.File
import java.io.IOException
import java.nio.file.FileSystems
import java.nio.file.FileVisitResult
import java.nio.file.Files
import java.nio.file.Path
import java.nio.file.Paths
import java.nio.file.SimpleFileVisitor
import java.nio.file.StandardWatchEventKinds
import java.nio.file.WatchEvent
import java.nio.file.WatchEvent.Kind
import java.nio.file.WatchKey
import java.nio.file.WatchService
import java.nio.file.attribute.BasicFileAttributes
import java.util.HashMap
import java.util.Map
/**
* 文件夹监控
*
* @author Goofy <a href="http://www.xdemo.org/">http://www.xdemo.org/</a>
* @Date 2015年7月3日 上午9:21:33
*/
public class WatchDir {
private final WatchService watcher
private final Map<WatchKey, Path> keys
private final boolean subDir
/**
* 构造方法
*
* @param file
* 文件目录,不可以是文件
* @param subDir
* @throws Exception
*/
public WatchDir(File file, boolean subDir, FileActionCallback callback) throws Exception {
if (!file.isDirectory())
throw new Exception(file.getAbsolutePath() + "is not a directory!")
this.watcher = FileSystems.getDefault().newWatchService()
this.keys = new HashMap<WatchKey, Path>()
this.subDir = subDir
Path dir = Paths.get(file.getAbsolutePath())
if (subDir) {
registerAll(dir)
} else {
register(dir)
}
processEvents(callback)
}
@SuppressWarnings("unchecked")
static <T> WatchEvent<T> cast(WatchEvent<?> event) {
return (WatchEvent<T>) event
}
/**
* 观察指定的目录
*
* @param dir
* @throws IOException
*/
private void register(Path dir) throws IOException {
WatchKey key = dir.register(watcher, StandardWatchEventKinds.ENTRY_CREATE, StandardWatchEventKinds.ENTRY_DELETE, StandardWatchEventKinds.ENTRY_MODIFY)
keys.put(key, dir)
}
/**
* 观察指定的目录,并且包括子目录
*/
private void registerAll(final Path start) throws IOException {
Files.walkFileTree(start, new SimpleFileVisitor<Path>() {
@Override
public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
register(dir)
return FileVisitResult.CONTINUE
}
})
}
/**
* 发生文件变化的回调函数
*/
@SuppressWarnings("rawtypes")
void processEvents(FileActionCallback callback) {
for () {
WatchKey key
try {
key = watcher.take()
} catch (InterruptedException x) {
return
}
Path dir = keys.get(key)
if (dir == null) {
System.err.println(" *** 作未识别")
continue
}
for (WatchEvent<?> event : key.pollEvents()) {
Kind kind = event.kind()
// 事件可能丢失或遗弃
if (kind == StandardWatchEventKinds.OVERFLOW) {
continue
}
// 目录内的变化可能是文件或者目录
WatchEvent<Path> ev = cast(event)
Path name = ev.context()
Path child = dir.resolve(name)
File file = child.toFile()
if (kind.name().equals(FileAction.DELETE.getValue())) {
callback.delete(file)
} else if (kind.name().equals(FileAction.CREATE.getValue())) {
callback.create(file)
} else if (kind.name().equals(FileAction.MODIFY.getValue())) {
callback.modify(file)
} else {
continue
}
// if directory is created, and watching recursively, then
// register it and its sub-directories
if (subDir && (kind == StandardWatchEventKinds.ENTRY_CREATE)) {
try {
if (Files.isDirectory(child, NOFOLLOW_LINKS)) {
registerAll(child)
}
} catch (IOException x) {
// ignore to keep sample readbale
}
}
}
boolean valid = key.reset()
if (!valid) {
// 移除不可访问的目录
// 因为有可能目录被移除,就会无法访问
keys.remove(key)
// 如果待监控的目录都不存在了,就中断执行
if (keys.isEmpty()) {
break
}
}
}
}
}
建议不要用FindNextChangeNotification,因为确实不清楚如何获得改变了的文件名,API的话可以使用ReadDirectoryChangesW来完成这个任务(当然还有一个也很好的API SHChangeNotifyRegister)。驱动层的监视更为好,不过这里我就不谈了。char *strDir = "k:/temp/Other"
HANDLE hDirectory
hDirectory = CreateFile( strDir, GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL
)
const unsigned int dwListBaseLength = sizeof( FILE_NOTIFY_INFORMATION ) + MAX_PATH
char buffer[ dwListBaseLength ] = { 0 }
FILE_NOTIFY_INFORMATION *pNotify = (FILE_NOTIFY_INFORMATION *) buffer
DWORD BytesReturned = 0
ReadDirectoryChangesW( hDirectory, pNotify, sizeof(buffer),
true, FILE_NOTIFY_CHANGE_FILE_NAME, &BytesReturned, NULL, NULL )
ShowMessage( WideCharToString( pNotify->FileName ) )
我是用bcb写的,你将她转为delphi就行了。
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