2019-05-31

Java实现复制文件夹中的文件内容到另一个文件夹中

public static void main(String[] args) throws Exception {

//递归遍历D:/companyFile/TestToExcel1/diesel/shry1文件夹下的文件

test("D:/companyFile/TestToExcel1/diesel/shry1");

}

private static void test(String fileDir) throws Exception {

List fileList = new ArrayList();

File file = new File(fileDir);

// 获取目录下的所有文件或文件夹

File[] files = file.listFiles();

if (files == null) {

return;

}

// 遍历，目录下的所有文件

for (File f : files) {

if (f.isFile()) {

fileList.add(f);

} else if (f.isDirectory()) {

System.out.println(f.getAbsolutePath());

test(f.getAbsolutePath());

}

}

for (File f1 : fileList) {

FileInputStream fis = new FileInputStream(f1);

//将复制的文件输出到E:/copyFile1文件夹

FileOutputStream fos = new FileOutputStream(new File("E:/copyFile1",f1.getName()));

copy(fis, fos); 

        fis.close(); 

        fos.close(); 

}

}

public static void copy(InputStream in, OutputStream out) throws Exception { 

        byte[] buf = new byte[1024]; 

        int len = 0; 

        while((len = in.read(buf))!=-1) { 

            out.write(buf, 0, len); 

        } 

    }