🚀 feat(新增): Files复制和移动文件

service/src/test/java/cn/bunny/file/FileStreamTest.java

@@ -7,7 +7,7 @@ import java.nio.channels.FileChannel;
 import java.time.Duration;
 import java.time.LocalDateTime;
 
-public class FileTest {
+public class FileStreamTest {
     /**
      * * 读取和写入纯文本内容
      */
@@ -36,7 +36,7 @@ public class FileTest {
     }
 
     /**
-     * * 读取和写入流媒体内容
+     * * 读取和写入流媒体内容，使用自己的缓冲区
      */
     @Test
     void streamMediaTest() {
@@ -55,12 +55,12 @@ public class FileTest {
                 FileOutputStream writer = new FileOutputStream(targetPath)
         ) {
             // 创建缓冲区
-            byte[] buffer = new byte[1024 * 7];
+            byte[] buffer = new byte[1024 * 1024 * 10];
             int length;
 
             // 读取源文件并写入目标文件
             while ((length = reader.read(buffer)) > 0) writer.write(buffer, 0, length);
-
+            // reader.transferTo(writer);
         } catch (IOException exception) {
             System.out.println(exception.getMessage());
         }
@@ -68,7 +68,38 @@ public class FileTest {
         // 计算时间差
         LocalDateTime end = LocalDateTime.now();
         Duration duration = Duration.between(start, end);
-        System.out.println("复制耗时: " + duration.toMillis() + " 毫秒");// 复制耗时: 614 毫秒
+        System.out.println("复制耗时: " + duration.toMillis() + " 毫秒");// 复制耗时: 1298 毫秒
+    }
+
+    /**
+     * * 使用流的 transferTo
+     */
+    @Test
+    void streamMediaTransferToTest() {
+        // 开始复制时间
+        LocalDateTime start = LocalDateTime.now();
+
+        // 源文件路径
+        String sourcePath = "D:\\dir\\source\\video.ts";
+        // 目标文件路径
+        String targetPath = "D:\\dir\\target\\video.ts";
+
+        try (
+                // 创建FileInputStream来读取源文件
+                FileInputStream inputStream = new FileInputStream(sourcePath);
+                // 创建BufferedWriter来写入目标文件
+                FileOutputStream outputStream = new FileOutputStream(targetPath)
+        ) {
+            // 将当前输入流中所有字节传输到指定的输出流
+            inputStream.transferTo(outputStream);
+        } catch (IOException exception) {
+            System.out.println(exception.getMessage());
+        }
+
+        // 计算时间差
+        LocalDateTime end = LocalDateTime.now();
+        Duration duration = Duration.between(start, end);
+        System.out.println("复制耗时: " + duration.toMillis() + " 毫秒");// 复制耗时: 767 毫秒
     }
 
     /**
@@ -103,6 +134,6 @@ public class FileTest {
         // 计算时间差
         LocalDateTime end = LocalDateTime.now();
         Duration duration = Duration.between(start, end);
-        System.out.println("复制耗时: " + duration.toMillis() + " 毫秒");// 复制耗时: 325 毫秒
+        System.out.println("复制耗时: " + duration.toMillis() + " 毫秒");// 复制耗时: 772 毫秒
     }
 }

service/src/test/java/cn/bunny/file/FilesTest.java

@@ -0,0 +1,50 @@
+package cn.bunny.file;
+
+import lombok.SneakyThrows;
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.Duration;
+import java.time.LocalDateTime;
+
+public class FilesTest {
+    // 需要保证复制目录下文件不存在，否则会报错
+    @SneakyThrows
+    @Test
+    void copyFileTest() {
+        // 开始复制时间
+        LocalDateTime start = LocalDateTime.now();
+
+        // 源文件路径
+        Path sourcePath = Path.of("D:\\dir\\source\\video.ts");
+        // 目标文件路径
+        Path targetPath = Path.of("D:\\dir\\target\\video.ts");
+
+        Files.copy(sourcePath, targetPath);
+
+        // 计算时间差
+        LocalDateTime end = LocalDateTime.now();
+        Duration duration = Duration.between(start, end);
+        System.out.println("复制耗时: " + duration.toMillis() + " 毫秒");// 复制耗时: 522 毫秒
+    }
+
+    @SneakyThrows
+    @Test
+    void moveFileTest() {
+        // 开始复制时间
+        LocalDateTime start = LocalDateTime.now();
+
+        // 源文件路径
+        Path sourcePath = Path.of("D:\\dir\\source\\video.ts");
+        // 目标文件路径
+        Path targetPath = Path.of("D:\\dir\\target\\video.ts");
+
+        Files.move(sourcePath, targetPath);
+
+        // 计算时间差
+        LocalDateTime end = LocalDateTime.now();
+        Duration duration = Duration.between(start, end);
+        System.out.println("复制耗时: " + duration.toMillis() + " 毫秒");// 复制耗时: 0 毫秒
+    }
+}