优化这段代码能产生不同的单元格宽度：public void myGraphicsGeneration(String name,String cellsValue[][], String path) { // 字体大小 int fontTitileSize = 15; // 横线的行数 int totalrow = cellsValue.length+1; // 竖线的行数 int totalcol = 0; if (cellsValue[0] != null) { totalcol = cellsValue[0].length; } // 图片宽度 int imageWidth = 1024; // 行高 int rowheight = 40; // 图片高度 int imageHeight = totalrow*rowheight+50; // 起始高度 int startHeight = 10; // 起始宽度 int startWidth = 10; // 单元格宽度 int colwidth = (int)((imageWidth-20)/totalcol); BufferedImage image = new BufferedImage(imageWidth, imageHeight,BufferedImage.TYPE_INT_RGB); Graphics graphics = image.getGraphics(); graphics.setColor(Color.WHITE); graphics.fillRect(0,0, imageWidth, imageHeight); graphics.setColor(new Color(220,240,240)); //画横线 for(int j=0;j<totalrow; j++){ graphics.setColor(Color.black); graphics.drawLine(startWidth, startHeight + (j + 1) * rowheight, startWidth + colwidth * totalcol, startHeight + (j + 1) * rowheight); } //画竖线 for(int k=0;k<totalcol+1;k++){ graphics.setColor(Color.black); graphics.drawLine(startWidth + k * colwidth, startHeight + rowheight, startWidth + k * colwidth, startHeight + rowheight * totalrow); } //设置字体 Font font = new Font("微软雅黑",Font.BOLD,fontTitileSize); graphics.setFont(font); //写标题 String title = "【"+ name +"】"; graphics.drawString(title, startWidth, startHeight+rowheight-10); //写入内容 for(int n=0;n<cellsValue.length;n++){ for(int l=0;l<cellsValue[n].length;l++){ if (n == 0) { font = new Font("微软雅黑",Font.BOLD,fontTitileSize); graphics.setFont(font); }else if (n > 0 && l >0) { font = new Font("微软雅黑",Font.PLAIN,fontTitileSize); graphics.setFont(font); graphics.setColor(Color.RED); } else { font = new Font("微软雅黑",Font.PLAIN,fontTitileSize); graphics.setFont(font); graphics.setColor(Color.BLACK); } if(cellsValue[n][l]==null){ cellsValue[n][l] = ""; } graphics.drawString(cellsValue[n][l].toString(), startWidth + colwidth * l + 5, startHeight + rowheight * (n + 2) - 10); } } // 保存图片 createImage(image, path); }

设计一个能保存任意类对象到文件的方法，并按以下条件测试该方法。（上交程序代码和程序运行截图。）（1）文件保存路径：C:\temp\class21.txt；（2）分别创建下面两个类的对象，并将其保存的到class21.txt文件中；（3）测试用的两个类： =============Student类================ public class Student { private String name; private int age; private char gender; private double height; private String hobby; public Student(String name, int age, char gender, double height, String hobby) { this.name = name; this.age = age; this.gender = gender; this.height = height; this.hobby = hobby; } public Student() { } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public char getGender() { return gender; } public void setGender(char gender) { this.gender = gender; } public double getHeight() { return height; } public void setHeight(double height) { this.height = height; } public String getHobby() { return hobby; } public void setHobby(String hobby) { this.hobby = hobby; } } =============Teacher类================ public class Teacher { private String name; private double salary; public Teacher(String name, double salary) { this.name = name; this.salary = salary; } public Teacher() { } public String getName() { return name; } public void setName(String name) { this.name = name; } public double getSalary() { return salary; } public void setSalary(double salary) { this.salary = salary; } }

这里提供一个实现该功能的 Java 程序代码，可以通过类的序列化和反序列化来实现对象的保存和读取： java import java.io.*; public class ObjectFileUtils { private static final String FILE_PATH = "C:\\...

class Model { public: Model(std::shared_ptr<HardwareInterface> hardware,const std::string &model_name, std::string &deviceid,const std::string& modelinfo_path)； bool Init(); bool Unload(); std::shared_ptr<ModelInfo> GetModelInfo(){return model_info_;} std::shared_ptr<ModelOutput> Run(int chn,hal::MediaBufferPtr &mediabuf); void SyncModelInfo(); std::string GetModelName(){return model_name_;} };

这段代码定义了一个 C++ 类 Model。这个类有以下几个成员函数： - Model：构造函数，接收四个参数，分别是指向 HardwareInterface 类型对象的智能指针、模型名称、设备 ID 和模型信息路径。 - Init：初始化...

package zonghelianxi; public class GameTest { public static void main(String[] args) { Role r1=new Role("1",100); Role r2=new Role("2",100); while (true){ r1.attack(r2); r2.attack(r1); if (r2.getBlood()==0){ System.out.println(r1.getName()+"ko"+r2.getName()); }else if (r1.getBlood()==0){ System.out.println(r2.getName()+"ko"+r1.getName()); } } } } class Role { private String name; private int blood; public Role(){}; public Role(String name,int blood){ this.name=name; this.blood=blood; } public void setName(String name){ this.name=name; } public String getName(){ return name; } public void setBlood(int blood){ this.blood=blood; } public int getBlood(){ return blood; } public void attack(Role role){ Random r=new Random(); int hurt=r.nextInt(20)+1; int reblood=role.getBlood()-hurt; reblood=reblood<0 ? 0:reblood; role.setBlood(reblood); System.out.println(this.getName()+"1攻击"+role.getName()+"2造成"+hurt+"伤害"+role.getName()+"还有"+reblood+"血"); } } 请帮我修改循环

def relativePath = file2.absolutePath - folderPath2 def file1 = new File(folderPath1 + relativePath) if (!file1.exists()) { // 文件只在第二个文件夹中存在，输出该信息你想修改循环的目的是什么？请...

优化这个方法：private void saveFileBrowseRecord(LayoutElementParcelable file) { // 当前的目录 String currentPath = file.desc.substring(0, file.desc.lastIndexOf(File.separator)); String basePath = mSourceRootPath; if (mTransferType == U_FTP_TO_FAB_FTP) { basePath = mSourcePath; } XLog.tag(TAG).i("mCurrentPath:" + currentPath + " basePath:" + basePath); HybridFileParcelable hybridFileParcelable = new HybridFileParcelable(currentPath, basePath, file.desc, file.permissions, file.date, file.longSize, file.isDirectory, file.getMode(), ""); if (!TextUtils.isEmpty(file.title)) { hybridFileParcelable.setName(file.title); } Map<String, Object> map = new HashMap<>(); // 文件路径全名称 map.put("dirFullName", hybridFileParcelable.getRelativePath()); // 文件服务器id map.put("fileServerId", mStoreServerId); RequestBody body = HttpClient.getRequestBody(map); TransferApi api = HttpClient.api(TransferApi.class, false); if (api == null) { XLog.tag(TAG).i("save file browse record api is null"); return; } // recordType 记录类型：默认0-最近浏览，1-收藏 api.saveFileBrowseRecord(body, 1) .compose(HttpClient.observableIoToMain()) .as(HttpClient.bindLifecycle(this)) .subscribe(new HttpDefaultObserver<HttpResult<String>>() { @Override public void start() { } @Override public void success(HttpResult<String> result) { mCollects.put(file.desc, file.desc); } @Override public void fail(HttpError e) { showWhiteFailToast(e.getCode(), e.getMessage(), null); } @Override public void finish() { } }); }

首先，可以将以下代码段： HybridFileParcelable hybridFileParcelable = new HybridFileParcelable(currentPath, basePath, file.desc, file.permissions, file.date, file.longSize, file.isDirectory, ...

上传/下载文件 <form method="post" action="/file/upload" enctype="multipart/form-data"> <input type="file" name="file" id="fileInput"/> <input type="submit" value="上传" /> </form>
<form method="post" action="/file/download" > <input type="text" name="fileName" placeholder="请输入文件名" /> <input type="submit" value="下载" id="downloadBtn" /> </form> public class SFTPUtil { private static final String host = "10.60.0.160"; private static final int port = 22; private static final String username = "root"; private static final String password = "Z20"; private static Session session = null; public static void connect() throws Exception { } public static void upload(MultipartFile file, String path, String fileName) throws Exception { } public static boolean download(HttpServletResponse response, String path, String fileName) throws Exception { } @Controller @RequestMapping("/file") public class FileController { private static final String UPLOAD_PATH = "/data/sftp/adtuser1/upload/winbidding/"; private static final String DOWNLOAD_PATH = "/data/sftp/adtuser1/upload/winbidding/"; @PostMapping("/upload") @ResponseBody public ModelAndView upload(@RequestParam("file") MultipartFile file) { } @PostMapping("/download") public ModelAndView download(@RequestParam("fileName") String fileName, HttpServletResponse response) throws Exception { } 数据库有host port username password UPLOAD_PATH DOWNLOAD_PATH csmc字段，把上边写死的改成数据库查询，前台页面增加csmc字段下拉框，根据csmc字段把查出来的配置数据完成上传下载功能，用的mysql数据库，把代码改好写出来

public void download(@RequestParam("fileName") String fileName, @RequestParam("csmc") String csmc, HttpServletResponse response) throws Exception { // 从数据库中获取SFTP连接配置信息 String sql = ...

data class LocalAppBean( var name: String, var pkg: String = "", var path: File? = null, var icon: Drawable, var isSupport: Boolean )转换为java代码

这段Kotlin代码定义了一个数据类LocalAppBean，Java的等价代码如下： java public class LocalAppBean { private String name; private String pkg; private File path; private Drawable icon; private ...

想要封装一个 private Integer id; private Integer pid; private String name; private String path; private String redirect; private String component; private String icon; private String key; private List<MoudleDto> children;这个类的集合根据查出的菜单对象，要是其中菜单有父菜单的id就要封装带该父菜单的children集合里面，直到获取的菜单集合循环完毕，这段代码怎么写

你可以使用递归的方式来封装这个菜单对象及其子菜单的集合。以下是一个示例代码： java public class MoudleDto { private Integer id; private Integer pid; private String name; private String path; ...

为什么这串代码无法实现文件的去重： public static void main(String[] args) throws Exception{ System.setProperty("username","hadoop234"); Configuration conf = new Configuration(); conf.set("fs.default.name", "hdfs://localhost:9000"); FileSystem fs = FileSystem.get(conf); int len = args.length; if(fs.exists(new Path(args[len-1]))) { fs.delete(new Path(args[len-1]),true); } Job job = Job.getInstance(conf,"Merge and duolicate removal"); job.setJarByClass(quchong.class); job.setMapperClass(MyMapper.class); job.setReducerClass(MyReducer.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(Text.class); for(int i=0;i<len-1;++i) { FileInputFormat.addInputPath(job, new Path(args[i])); } FileOutputFormat.setOutputPath(job, new Path(args[len-1])); System.exit(job.waitForCompletion(true) ? 0 : 1); fs.close(); }

这段代码中并没有实现去重，因为在 MapReduce 任务中实现去重通常需要借助 Map 和 Reduce 的聚合功能。而这段代码只是设置了一个 Map 和 Reduce 的类，但并没有在类中实现去重逻辑。如果想要实现文件的去重，需要...

public class iTween : MonoBehaviour{ #region Variables //repository of all living iTweens: public static List<Hashtable> tweens = new List<Hashtable>(); //camera fade object: // private static GameObject cameraFade; //status members (made public for visual troubleshooting in the inspector): public string id, type, method; public iTween.EaseType easeType; public float time, delay; public LoopType loopType; public bool isRunning,isPaused; /* GFX47 MOD START / public string _name; / GFX47 MOD END */ //private members: private float runningTime, percentage; private float delayStarted; //probably not neccesary that this be protected but it shuts Unity's compiler up about this being "never used" private bool kinematic, isLocal, loop, reverse, wasPaused, physics; private Hashtable tweenArguments; private Space space; private delegate float EasingFunction(float start, float end, float Value); private delegate void ApplyTween(); private EasingFunction ease; private ApplyTween apply; private AudioSource audioSource; private Vector3[] vector3s; private Vector2[] vector2s; private Color[,] colors; private float[] floats; private Rect[] rects; private CRSpline path; private Vector3 preUpdate; private Vector3 postUpdate; private NamedValueColor namedcolorvalue; private float lastRealTime; // Added by PressPlay private bool useRealTime; // Added by PressPlay private Transform thisTransform;

这段代码是用C#编写的 iTween 类。iTween 是一款 Unity3D 的插件，用于实现...总的来说，这段代码是 iTween 插件的核心代码，用于实现对象的动画效果，并提供了丰富的参数和选项，可以灵活地实现各种不同的动画效果。

import java.util.HashMap; import java.util.Map; public class TreePathFinder { private Map<String, Node> nodeMap; public TreePathFinder() { nodeMap = new HashMap<>(); } public void addNode(Node node) { nodeMap.put(node.getId(), node); } public String findPath(String nodeId) { Node node = nodeMap.get(nodeId); if (node == null) { return null; } StringBuilder path = new StringBuilder(node.getName()); while (node.getParentId() != null) { Node curNode = new Node(node.getId(), node.getName(), node.getParentId()); node = nodeMap.get(node.getParentId()); node.setChildNode(curNode); if (node != null) { path.insert(0, node.getName() + " > "); } } return node.toString(); } public static void main(String[] args) { TreePathFinder pathFinder = new TreePathFinder(); // 构建树状结构的示例数据 Node node1 = new Node("1", "Root", null); Node node2 = new Node("2", "Node 2", "1"); Node node3 = new Node("3", "Node 3", "1"); Node node4 = new Node("4", "Node 4", "1"); Node node5 = new Node("5", "Node 5", "2"); Node node6 = new Node("6", "Node 6", "2"); Node node7 = new Node("7", "Node 7", "3"); Node node8 = new Node("8", "Node 8", "4"); pathFinder.addNode(node1); pathFinder.addNode(node2); pathFinder.addNode(node3); pathFinder.addNode(node4); pathFinder.addNode(node5); pathFinder.addNode(node6); pathFinder.addNode(node7); pathFinder.addNode(node8); // 获取节点在树上的路径 String path = pathFinder.findPath("5"); System.out.println("Path: " + path); } } 这段代码怎么优化，我现在无法把输入的节点也放在返回的最里层

这段代码可以优化的地方有： 1. 在 findPath 方法中，可以使用 StringBuilder 的 reverse() 方法来避免在后面再次反转路径字符串。 2. 在 while 循环中，可以将节点的创建和添加操作移动到循环之前，避免...

#include "RuntimeAssetCache/Public/RuntimeAssetCache.h"#include "AssetData.h"void GetAssetPropertyFromAnotherProject(){ FString ProjectName = TEXT("bbb"); // 资产所在的项目名称 FString AssetPath = TEXT("/Game/cc"); // 资产的路径 // 获取资产数据 TArray<FAssetData> AssetDataArray; FAssetRegistryModule& AssetRegistryModule = FModuleManager::LoadModuleChecked<FAssetRegistryModule>("AssetRegistry"); FARFilter Filter; Filter.PackagePaths.Add(FName(FString::Printf(TEXT("/%s"), ProjectName))); Filter.bRecursivePaths = true; Filter.ClassNames.Add(UObject::StaticClass()->GetFName()); Filter.PackageNames.Add(FName(AssetPath)); AssetRegistryModule.Get().GetAssets(Filter, AssetDataArray); if (AssetDataArray.Num() > 0) { const FAssetData& AssetData = AssetDataArray[0]; // 获取资产路径 FString AssetPackagePath = FString::Printf(TEXT("%s.%s"), AssetData.PackageName.ToString(), AssetData.ObjectPath.ToString()); // 加载资产 UObject Asset = FRuntimeAssetCache::Get().LoadAssetFromPath(AssetPackagePath, true); if (Asset) { FString AssetName = Asset->GetName(); // 获取资产属性 // ... } }} 这段代码需要引入什么build 文件

这段代码需要引入以下模块的.build.cs文件： PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "AssetRegistry", "RuntimeAssetCache" }); 这个代码使用了Unreal ...

public void saveTheGameToFile(){ File file=new File(path); Scanner sc=new Scanner(System.in); System.out.println("Please name the save file:"); String filename = sc.nextLine(); try{ FileOutputStream fileOut=new FileOutputStream(filename+".ser"); ObjectOutputStream objectOut=new ObjectOutputStream(fileOut); objectOut.writeObject(new SaveData(GameInterface.getLetterSpace(),Player.createArrayOfPlayers())); System.out.println("Successfully saved to file "+filename); }catch (IOException e){ System.out.println("Failed to save to file "+ filename); System.out.println("Sorry! Something went wrong: "+ e.getMessage()); } } //A method to load the game from the file. public void loadGameFromFile(String fileName){ String filename=fileName;//存档的文件名 try{ FileInputStream fileIn=new FileInputStream(filename); ObjectInputStream ObjectIn=new ObjectInputStream(fileIn); SaveData saveData=(SaveData)ObjectIn.readObject(); ObjectIn.close(); fileIn.close(); System.out.println("Load from file "+ filename); GameInterface.printGameBoard(GameInterface.initialGameboard()); }catch(FileNotFoundException e){ System.out.println(filename+" is not found."); }catch (IOException| ClassNotFoundException e){ System.out.println(filename +" is failed to load from file."); } } public void showSaveList(){ File dir=new File("."); File[]files=dir.listFiles(new FilenameFilter() { public boolean accept(File dir,String name) { return name.toLowerCase().endsWith(".txt"); } }); System.out.println("----------------------Save List----------------------"); for(File file: files){ System.out.println("-"+file.getName().replace(".txt","")); } }这三个方法是Java控制台棋盘游戏存档使用的，请帮我在菜单类调用这三个方法，实现在菜单可以玩存档的游戏，你可以写一段代码吗

当然可以，这里是示例代码： //在菜单类中调用saveTheGameToFile()方法 public void saveGame(){ Game game = new Game(); game.saveTheGameToFile(); } //在菜单类中调用loadGameFromFile()方法 public void ...

package wc; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.mapreduce.lib.input.FileInputFormat; import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; public class WordCountMain { public static void main(String[] args) throws Exception{ // TODO Auto-generated method stub Configuration conf = new Configuration(); conf.set("fs.default.name","hdfs://localhost:9000"); String[] otherArgs = new String[]{"input","output"}; /* 直接设置输入参数 */ if (otherArgs.length != 2) { System.err.println("Usage: wordcount <in><out>"); System.exit(2); } Job job = Job.getInstance(conf,"Merge and duplicate removal"); job.setJarByClass(WordCountMapper.class); job.setMapperClass(WordCountMapper.class); job.setCombinerClass(WordCountReduce.class); job.setReducerClass(WordCountReduce.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(Text.class); FileInputFormat.addInputPath(job, new Path(otherArgs[0])); FileOutputFormat.setOutputPath(job, new Path(otherArgs[1])); System.exit(job.waitForCompletion(true) ? 0 : 1); } } package wc; import java.io.IOException; import org.apache.hadoop.mapreduce.Mapper; import org.apache.hadoop.io.Text; public class WordCountMapper extends Mapper<Text, Text, Text, Text>{ private static Text text = new Text(); public void map(Object key, Text value, Context context) throws IOException,InterruptedException{ text = value; context.write(text, new Text("")); } } package wc; import java.io.IOException; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Reducer; public class WordCountReduce extends Reducer<Text, Text, Text, Text> { public void reduce(Text key, Iterable<Text> values, Context context ) throws IOException,InterruptedException{ context.write(key, new Text("")); } } 执行该代码时，所需要选的执行文件夹和输出文件夹是在hdfs目录上的文件夹还是本地目录的文件夹？

在您提供的代码中，使用了 Hadoop MapReduce 框架对输入文件进行词频统计，并将结果输出到指定的输出路径。因此，执行该代码时，需要选择 HDFS 上的输入文件夹和输出文件夹。具体来说，在 main 函数中，通过以下...

private void initView(){ permission(); ivAdd.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { openCarema(); } }); int oid = getIntent().getIntExtra("oid", 1); imgFile = new File(path); btn_add.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { String name = et_name.getText().toString(); String suit = et_zhengzhuang.getText().toString(); String effect = et_effect.getText().toString(); String notice = et_notice.getText().toString(); String use_info = et_num.getText().toString(); //把图片先转化成bitmap格式 BitmapDrawable drawable = (BitmapDrawable) ivAdd.getDrawable(); Bitmap bitmap = drawable.getBitmap(); //二进制数组输出流 ByteArrayOutputStream byStream = new ByteArrayOutputStream(); //将图片压缩成质量为100的PNG格式图片 bitmap.compress(Bitmap.CompressFormat.JPEG, 50, byStream); //把输出流转换为二进制数组 byte[] byteArray = byStream.toByteArray(); String base64 = Base64.encodeToString(byteArray, Base64.URL_SAFE); HashMap<String, Object> map = new HashMap<>(); // map.put("img",byteArray); map.put("img",base64); map.put("name",name); map.put("suit",suit); map.put("oid",oid); map.put("effect",effect); map.put("notice",notice); map.put("useInfo",use_info); RequestBody requestBody = getRequestBody(map); add(requestBody); } }); }

这是一个 Android 中的 ...这个方法中包含了一个拍照功能的调用 openCarema()，以及一个将图片转化成 base64 格式的操作。最后，这个方法使用 Retrofit 发送一个 HTTP POST 请求，将上传的图片和其他信息提交给服务器。

using System; using System.Collections.Generic; using System.ComponentModel; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; namespace HDSProject.Control { ///
/// CustomFont.xaml 的交互逻辑 ///
public partial class CustomFont : ItemsControl { public CustomFont() { InitializeComponent(); } private string title2 = "测试字体间距zjis"; public string Title2 { get { return title2; } set { title2 = value; OnPropertyChanged("Title2"); } } public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(string propertyName) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } } } }外部改变Title2的值得话绑定处这样写：ItemsSource="{Binding Path=Title2, RelativeSource={RelativeSource Mode=Self}}"没有改变是什么原因

可能有以下几个原因： 1. 没有正确设置 DataContext，确保绑定的对象和数据源是同一个。 2. 没有实现 INotifyPropertyChanged 接口，导致绑定无法更新数据源。 3. 绑定的路径不正确，应该根据实际的数据源调整...

public class MarketShareDriver { public static void main(String[] args) throws Exception { Configuration conf = new Configuration(); Job job = Job.getInstance(conf); job.setJarByClass(MarketShareDriver.class); job.setMapperClass(MarketShareMapper.class); job.setReducerClass(MarketShareReducer.class); job.setMapOutputKeyClass(Text.class); job.setMapOutputValueClass(Text.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(Text.class); Path inPath = new Path("data/phone.txt"); FileInputFormat.setInputPaths(job,inPath); Path outPath = new Path("data/PhoneMarketShare"); FileSystem fs = outPath.getFileSystem(conf); if (fs.exists(outPath)){ fs.delete(outPath,true); } FileOutputFormat.setOutputPath(job,outPath); boolean b = job.waitForCompletion(true); System.exit(b ? 0 : 1); } } 这段代码怎么修改才能把数据也存到MySQL中

public static void main(String[] args) throws Exception { Configuration conf = new Configuration(); Job job = Job.getInstance(conf); job.setJarByClass(MarketShareDriver.class); job.setMapperClass...

public class CleanUtil { public static void deleleFilesOfDir(String dirPathName, int retainHours) { File dir = new File(dirPathName); File[] listFile = dir.listFiles(); if (listFile == null) { return; } long now = System.currentTimeMillis(); for (File file : listFile) { deleteFile(now, retainHours, file); } } private static void deleteFile(long now, int retainHours, File file) { try { BasicFileAttributes basicAttr = Files.readAttributes(file.toPath(), BasicFileAttributes.class); long fileTime = basicAttr.lastAccessTime().toMillis(); deleteOverDueFile(retainHours, file, now, fileTime); } catch (IOException | RuntimeException e) { log.warn("failed to read file attributes: {}", file.getAbsolutePath(), e); } } private static void deleteOverDueFile(int retainHours, File file, long now, long fileTime) { if (isOverDue(retainHours, now, fileTime)) { boolean isDeleted = FileUtils.deleteQuietly(file); if (!isDeleted) { log.warn("file deleted faild: {}", file.getAbsolutePath()); } } } uT

这段代码是一个 Java 工具类，用来删除指定目录下一定时间内未被访问的文件。其中，deleleFilesOfDir 方法会遍历指定目录下的所有文件，调用 deleteFile 方法删除每一个文件；deleteFile 方法会读取文件属性，判断...

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