feat(新增): 🚀 学习文件和文件夹复制Files.walk

demo1/src/main/java/cn/bunny/Demo10.java

@@ -7,8 +7,45 @@ import java.util.concurrent.atomic.AtomicInteger;
 
 public class Demo10 {
     public static void main(String[] args) throws IOException {
+        String source = "D:\\BaiduNetdiskDownload\\web项目\\大屏模板\\【1849】";
+        String target = "D:\\BaiduNetdiskDownload\\web项目\\大屏模板\\【1849】 aaaa";
+        Files.walk(Paths.get(source)).forEach(path -> {
+            try {
+                String targetName = path.toString().replace(source, target);
+                // 是目录 就创建
+                if (Files.isDirectory(path)) {
+                    Files.createDirectories(Paths.get(targetName));
+                }
+                // 是普通文件就复制
+                else if (Files.isRegularFile(path)) {
+                    Files.copy(path, Paths.get(targetName));
+                }
+            } catch (Exception exception) {
+                exception.printStackTrace();
+            }
+        });
+    }
+    // 删除文件
+    private static void m3() throws IOException {
+        // 删除目录不允许，因为里面有文件，所以不可以删除，先将文件删除之后再删除文件夹
+        Files.walkFileTree(Paths.get("D:\\BaiduNetdiskDownload\\web项目\\大屏模板\\【1849】 - 副本"), new SimpleFileVisitor<>(){
+            // 先删除文件
+            @Override
+            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
+                Files.delete(file);
+                return super.visitFile(file, attrs);
+            }
+            // 再删除文件夹
+            public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
+                Files.delete(dir);
+                return super.postVisitDirectory(dir, exc);
+            }
+        });
+    }
+
+    // 查看当前文件
+    private static void m2() throws IOException {
         AtomicInteger atomicInteger = new AtomicInteger();
-        m1();
         Files.walkFileTree(Paths.get("D:\\BaiduNetdiskDownload\\web项目\\大屏模板"), new SimpleFileVisitor<>(){
             /**
              * Invoked for a file in a directory.
@@ -16,8 +53,6 @@ public class Demo10 {
              * <p> Unless overridden, this method returns {@link FileVisitResult#CONTINUE
              * CONTINUE}.
              *
-             * @param file
-             * @param attrs
              */
             @Override
             public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
@@ -32,6 +67,7 @@ public class Demo10 {
         System.out.println("===>" + atomicInteger);
     }
 
+    // 文件相关操作
     private static void m1() throws IOException {
         AtomicInteger dirCount = new AtomicInteger();
         AtomicInteger fileCount = new AtomicInteger();
@@ -44,8 +80,6 @@ public class Demo10 {
              * <p> Unless overridden, this method returns {@link FileVisitResult#CONTINUE
              * CONTINUE}.
              *
-             * @param dir
-             * @param attrs
              */
             @Override
             public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
@@ -60,8 +94,6 @@ public class Demo10 {
              * <p> Unless overridden, this method returns {@link FileVisitResult#CONTINUE
              * CONTINUE}.
              *
-             * @param file
-             * @param attrs
              */
             @Override
             public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {