From a2b6956497e23f03dcfa7c0a4d925224092bce6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=A7=A6=E8=8B=B1=E6=9D=B0?= <327782001@qq.com>
Date: Mon, 23 Oct 2023 00:24:41 +0800
Subject: [PATCH] =?UTF-8?q?fix:=E4=BF=AE=E6=94=B9=E5=88=86=E7=BB=84?=
 =?UTF-8?q?=E5=92=8C=E6=97=B6=E9=97=B4?=
MIME-Version: 1.0
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---
 .../utils/FileContainsUtil.java               | 24 +++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/kwan/springbootkwan/utils/FileContainsUtil.java b/src/main/java/com/kwan/springbootkwan/utils/FileContainsUtil.java
index 763c4bc..c577ff3 100644
--- a/src/main/java/com/kwan/springbootkwan/utils/FileContainsUtil.java
+++ b/src/main/java/com/kwan/springbootkwan/utils/FileContainsUtil.java
@@ -9,8 +9,10 @@ import lombok.extern.slf4j.Slf4j;
 
 import java.io.File;
 import java.io.IOException;
+import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Date;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -55,6 +57,7 @@ public class FileContainsUtil {
 
     public static void main(String[] args) throws Exception {
         StopWatch stopWatch = new StopWatch();
+        currentTime("开始时间");
         stopWatch.start("删除未用到的图片");
         //不存在的图片集合
         final List<String> isNotExist = new ArrayList<>();
@@ -70,6 +73,7 @@ public class FileContainsUtil {
         log.info("耗时统计信息:{}", JSON.toJSONString(stopWatch.getTaskInfo()));
         log.info("耗时秒数:{}", JSON.toJSONString(stopWatch.getTotalTimeSeconds()));
         log.info("耗时分钟数:{}", JSON.toJSONString(stopWatch.getTotalTimeSeconds() / 60));
+        currentTime("结束时间");
     }
 
     /**
@@ -81,7 +85,7 @@ public class FileContainsUtil {
     private static void moreThread(List<List<String>> groupedPicNames, List<String> isNotExist) {
         // 创建并启动4个线程来处理每个组的任务
         List<Thread> threads = new ArrayList<>();
-        for (int i = 0; i < 8; i++) {
+        for (int i = 0; i < 6; i++) {
             final List<String> group = groupedPicNames.get(i);
             Thread thread = new Thread(() -> {
                 // 在这里执行处理图片组的任务
@@ -128,12 +132,13 @@ public class FileContainsUtil {
 
     /**
      * 数据分组
+     * 经过测试6组和8组的时间基本一致,线程数并不是越大越好
      *
      * @param picNames
      * @return
      */
     private static List<List<String>> dataGroup(List<String> picNames) {
-        int groupSize = picNames.size() / 8; // 计算每组的大小
+        int groupSize = picNames.size() / 6; // 计算每组的大小
         List<List<String>> groupedPicNames =
                 picNames.stream()
                         .collect(Collectors.groupingBy(e -> picNames.indexOf(e) / groupSize))
@@ -231,4 +236,19 @@ public class FileContainsUtil {
             System.err.printf("无法删除的路径 %s%n%s", picPath, e);
         }
     }
+
+    /**
+     * 打印当前时间
+     *
+     * @param str
+     */
+    public static void currentTime(String str) {
+        // 获取当前时间
+        Date currentTime = new Date();
+        // 创建一个格式化器以将时间转换为所需的格式
+        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        // 使用格式化器将时间转换为字符串并打印
+        String formattedTime = dateFormat.format(currentTime);
+        System.out.println(str + "：" + formattedTime);
+    }
 }
\ No newline at end of file
-- 
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