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fix watchService

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This commit is contained in:
Looly 2019-10-05 21:24:57 +08:00
parent 52fb6267a5
commit 5d99de9b89
2 changed files with 63 additions and 30 deletions
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70
hutool-core/src/main/java/cn/hutool/core/io/watch/WatchMonitor.java
View File

@ -1,30 +1,5 @@
package cn.hutool.core.io.watch;
import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.io.Serializable;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.file.AccessDeniedException;
import java.nio.file.ClosedWatchServiceException;
import java.nio.file.FileSystems;
import java.nio.file.FileVisitOption;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.LinkOption;
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.WatchKey;
import java.nio.file.WatchService;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
import cn.hutool.core.io.FileUtil;
import cn.hutool.core.io.IORuntimeException;
import cn.hutool.core.io.IoUtil;
@ -33,6 +8,18 @@ import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.core.util.URLUtil;
import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.io.Serializable;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.file.*;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
/**
* 路径监听器
*
@ -97,6 +84,10 @@ public class WatchMonitor extends Thread implements Closeable, Serializable {
* 监听事件列表
*/
private WatchEvent.Kind<?>[] events;
/**
* 监听选项，例如监听频率等
*/
private WatchEvent.Modifier[] modifiers;
/**
* 监听是否已经关闭
@ -450,6 +441,22 @@ public class WatchMonitor extends Thread implements Closeable, Serializable {
return this;
}
/**
* 设置监听选项，例如监听频率等，可设置项包括：<p>
*
* <pre>
* 1、com.sun.nio.file.StandardWatchEventKinds
* 2、com.sun.nio.file.SensitivityWatchEventModifier
* </pre>
*
* @param modifiers 监听选项，例如监听频率等
* @return this
*/
public WatchMonitor setModifiers(WatchEvent.Modifier[] modifiers) {
this.modifiers = modifiers;
return this;
}
/**
* 关闭监听
*/
@ -466,7 +473,7 @@ public class WatchMonitor extends Thread implements Closeable, Serializable {
*
* @param watcher {@link Watcher}
*/
private void doTakeAndWatch(Watcher watcher){
private void doTakeAndWatch(Watcher watcher) {
WatchKey wk;
try {
wk = watchService.take();
@ -513,9 +520,18 @@ public class WatchMonitor extends Thread implements Closeable, Serializable {
* @param maxDepth 递归下层目录的最大深度
*/
private void registerPath(Path path, int maxDepth) {
final WatchEvent.Kind<?>[] kinds = ArrayUtil.defaultIfEmpty(this.events, EVENTS_ALL);
try {
final WatchKey key = path.register(this.watchService, ArrayUtil.defaultIfEmpty(this.events, EVENTS_ALL));
final WatchKey key;
if (ArrayUtil.isEmpty(this.modifiers)) {
key = path.register(this.watchService, kinds);
} else {
key = path.register(this.watchService, kinds, this.modifiers);
}
watchKeyPathMap.put(key, path);
// 递归注册下一层层级的目录
if (maxDepth > 1) {
//遍历所有子目录并加入监听
Files.walkFileTree(path, EnumSet.noneOf(FileVisitOption.class), maxDepth, new SimpleFileVisitor<Path>() {

23
hutool-core/src/main/java/cn/hutool/core/io/watch/WatchUtil.java
View File

@ -1,12 +1,12 @@
package cn.hutool.core.io.watch;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URL;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.WatchEvent;
import java.nio.file.*;
import cn.hutool.core.io.IORuntimeException;
import cn.hutool.core.util.URLUtil;
/**
@ -377,4 +377,21 @@ public class WatchUtil {
watchMonitor.setWatcher(watcher);
return watchMonitor;
}
/**
* 注册Watchable对象到WatchService服务
*
* @param watchable 可注册对象
* @param watcher WatchService对象
* @param events 监听事件
* @return {@link WatchKey}
* @since 4.6.9
*/
public static WatchKey register(Watchable watchable, WatchService watcher, WatchEvent.Kind<?>... events){
try {
return watchable.register(watcher, events);
} catch (IOException e) {
throw new IORuntimeException(e);
}
}
}