srcPath(源地址) ? ?desPath(目標地址)

1、普通拷貝（地址的形式）

public static void testOnCopyFile(String srcPath,String desPath){

File srcFile = new File(srcPath);

File desFile = new File(desPath);

try {

InputStream is = new FileInputStream(srcFile);

OutputStream os = new FileOutputStream(desFile);

byte[] data = new byte[1024];

int len = 0;

while((len = is.read(data))!= -1){

os.write(data, 0, len);

}

os.flush();

os.close();

is.close();

} catch (Exception e) {

System.out.println("讀取失敗");

}

}

2嬉橙、以文件形式拷貝

//通過文件形式拷貝

public static void testOnCopyFile(File src,File des) throws IOException{

????????????????if(! src.isFile()){

????????????????????????????????System.out.println("只能上傳文件");

????????????????????????????????throw new IOException("只能上傳文件");

????????????????}

????????????????//如果目標文件是一個已經(jīng)存在的文件夾

????????????????if(des.isDirectory()){

????????????????????????????????System.out.println("只能拷貝文件");

????????????????????????????????throw new IOException("不能建立同名的文件夾");

????????????????}

????????????????try {

????????????????????????????????InputStream is = new FileInputStream(src);

????????????????????????????????OutputStream os = new FileOutputStream(des);

????????????????????????????????byte[] data = new byte[1024];

????????????????????????????????int len = 0;

????????????????????????????????while((len = is.read(data))!= -1){

????????????????????????????????????????????????os.write(data, 0, len);

????????????????????????????????????}

????????????????????????????????os.flush();

????????????????????????????????os.close();

????????????????????????????????is.close();

????????????????} catch (Exception e) {

????????????????????System.out.println("讀取失敗");

????????????}

}

3零如、測試文件

@Test

public void test1(){

????????????????String srcPath = "D:/KFO/parent/1122.txt";

????????????????String desPath = "D:/KFO/parent/test1/2233445566.txt";

????????????????testOnCopyFile(srcPath, desPath);

}

@Test

public void test2() throws IOException{

????????????????File srcFile = new File("D:/KFO/parent/1122.txt");

????????????????File desFile = new File("D:/KFO/parent/test1/22334455.txt");

????????????????testOnCopyFile(srcFile, desFile);

}