java代码实现C盘文件统计工具

 概述

工作电脑用了3年多了,100G的C盘也快吃不消了,每次打开看到C盘红了,总要用清理工具清理一下子.

不知道怎么最近清理工具清理了也没有什么效果,把temp下面的文件删除,没什么大作用.

总是有一种冲动要去处理掉,已经影响工作了.乘着星期天写个工具,分析一下C盘的文件,看看那些是最近才增加的,能不能手动删除掉.

版本介绍

• Maven-3.3.9

• JDK1.8 目录结构

com
 └─sedaier
     └─calcdir
         ├─service
         │  │  IDirSizeCalc.java
         │  │
         │  └─impl
         │         DirSizeCalcByForkJoinPoolImpl.java
         │
         ├─test
         │      Test.java
         │
         └─tool
                OutputFileUtils.java //日志输出工具类

源码

DirSizeCalcByForkJoinPoolImpl.java

package com.sedaier.calcdir.service.impl;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.ForkJoinTask;
import java.util.concurrent.RecursiveTask;

import com.sedaier.calcdir.service.IDirSizeCalc;
import com.sedaier.calcdir.tool.OutputFileUtils;

public class DirSizeCalcByForkJoinPoolImpl implements IDirSizeCalc {

@Override
public long getSize(final File file, final File log) {
ForkJoinPool forkJoinPool = new ForkJoinPool();
return forkJoinPool.invoke(new FileSizeFinder(file, log));
}

@SuppressWarnings("serial")
private static class FileSizeFinder extends RecursiveTask<Long> {
final File file;
final File log;

FileSizeFinder(final File theFile, final File theLog) {
file = theFile;
log = theLog;
}

@Override
public Long compute() {
long size = 0;
if (file.isFile()) {
size = file.length();
OutputFileUtils.write(log, file);
} else {
final File[] children = file.listFiles();
if (children != null) {
List<ForkJoinTask<Long>> tasks = new ArrayList<ForkJoinTask<Long>>();
for (final File child : children) {
if (child.isFile()) {
size += child.length();
OutputFileUtils.write(log, child);
} else {
tasks.add(new FileSizeFinder(child, log));
}
}
for (final ForkJoinTask<Long> task : invokeAll(tasks)) {
size += task.join();
}
}
}
return size;
}
}
}

IDirSizeCalc.java

package com.sedaier.calcdir.service;

import java.io.File;

public interface IDirSizeCalc {
long getSize(final File file, final File log);
}

Test.java

package com.sedaier.calcdir.test;

import java.io.File;

import com.sedaier.calcdir.service.IDirSizeCalc;
import com.sedaier.calcdir.service.impl.DirSizeCalcByForkJoinPoolImpl;
import com.sedaier.calcdir.tool.OutputFileUtils;

public class Test {
public static void main(final String[] args) {
String dirPath = "C:\\Windows";
String log = "C:\\Users\\Administrator\\Desktop\\log.log";
File file = new File(dirPath);
File logFile = new File(log);

calcDirSize(file, logFile, new DirSizeCalcByForkJoinPoolImpl());
OutputFileUtils.distory();
}

private static void calcDirSize(File file, File log, IDirSizeCalc dirSizeCalc) {
dirSizeCalc.getSize(file, log);
}
}

OutputFileUtils.java

package com.sedaier.calcdir.tool;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Calendar;

public class OutputFileUtils {

public static int time = 0;
//buffer刷信息时间
public static int overtime = 100;
//避免重复初始化
public static boolean flag = false;
public static FileWriter out = null;
public static BufferedWriter bw = null;
//昨天
public static long day;
//用于计算日期 -1 当前日期往前一天,-2 当前日期往前两天
public static int amount = -1;

static {
//初始化日期
Calendar instance = Calendar.getInstance();
instance.add(Calendar.DAY_OF_MONTH, amount);
day = instance.getTimeInMillis();
}

public static void write(final File log, File file) {

try {
if (!flag && !log.exists()) {
log.createNewFile();
flag = true;
}
if(out == null || bw == null) {
out = new FileWriter (log);
bw = new BufferedWriter(out);
}
long lastModified = file.lastModified();
if(lastModified > day) {
bw.write(String.format("％s===大小=％d===时间=％tF",file.getAbsolutePath(),file.length()/1000000,lastModified));
bw.newLine();
}
time++;
if(time > overtime) {
bw.flush();
time = 0 ;
}
} catch (IOException e) {
e.printStackTrace();
}
}

public static void distory() {
try {
bw.close();
out.close();
System.out.println("关闭成功!");
} catch (IOException e) {
e.printStackTrace();
}
}
}

源码下载地址

https://gitee.com/lanseyouyu/sediaer-calcdir.git

来源：https://blog.csdn.net/qq125281823/article/details/118651166