Java实现复制并修改部分文件后缀名
2018-03-08 本文已影响0人
ShenHehe
public class Test {
public static String DIR = "e:\\Test\\java";//需要复制的源文件地址
public static String DESTDIR = "e:\\Test\\aaa";//拷贝后存放的地址
public static void main(String[] args) throws Exception {
System.out.println("开始");
traverseFolder(DIR);
System.out.println("结束");
}
public static void copy(InputStream in, OutputStream out) throws Exception {
byte[] buf = new byte[1024];
int len = 0;
/*读取文件内容并写入文件字节流中*/
while((len = in.read(buf))!=-1) {
out.write(buf, 0, len);
}
}
public static void traverseFolder(String path) throws Exception {
File file = new File(path);
if (file.exists()) {
File[] files = file.listFiles();
if (files.length == 0) {
System.out.println(file.getAbsolutePath() + " 空文件夹!");
return;
} else {
for (File file2 : files) {
if (file2.isDirectory()) {
//如果是文件夹创建文件夹
File str = new File(file2.getAbsolutePath().toString().replace(DIR, DESTDIR));
str.mkdir();
//递归查找该文件夹里面的文件
traverseFolder(file2.getAbsolutePath());
}else {
FileInputStream fis = new FileInputStream(file2);
//修改后缀名(java改txt)
String destFileName = file2.getName().replaceAll("\\.java$", "\\.txt");
FileOutputStream fos = new FileOutputStream(new File(file2.getParent().toString().replace(DIR, DESTDIR), destFileName));
//复制写入
copy(fis, fos);
fis.close();
fos.close();
}
}
}
} else {
System.out.println("文件不存在!");
}
}
}
