import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Calendar; public class SendServer { private int num = ; public void process() { Calendar calendar = Calendar.getInstance();
String dir = calendar.get(Calendar.YEAR) + "" + getTimeString(calendar.get(Calendar.MONTH) + ""); String oldPath = "/img2" + dir;
String newPath = "/img5" + dir; try { while(true){
System.out.println("复制 " + oldPath + " 目录开始");
long t1 = System.currentTimeMillis(); num = ;
copyFolder(oldPath, newPath); long t2 = System.currentTimeMillis();
System.out.println("复制目录结束，用时：" + (t2-t1) + "ms,共复制：" + num + "文件");
} } catch (Exception ex) {
ex.printStackTrace();
}
} public void copyFolder(String oldPath, String newPath) { try {
File mFile = new File(newPath);
if(!mFile .exists()){
(new File(newPath)).mkdirs(); // 如果文件夹不存在 则建立新文件夹
}
File a = new File(oldPath);
String[] file = a.list();
File temp = null;
for (int i = ; i < file.length; i++) {
if (oldPath.endsWith(File.separator)) {
temp = new File(oldPath + file[i]);
} else {
temp = new File(oldPath + File.separator + file[i]);
} if (temp.isFile()) {
String fileName = newPath + "/" + (temp.getName()).toString();
File testFile = new File(fileName);
if (!testFile.exists()) {
FileInputStream input = new FileInputStream(temp);
FileOutputStream output = new FileOutputStream(fileName);
byte[] b = new byte[ * ];
int len;
while ((len = input.read(b)) != -) {
output.write(b, , len);
}
output.flush();
output.close();
input.close();
num++;
}
}
if (temp.isDirectory()) {// 如果是子文件夹
copyFolder(oldPath + "/" + file[i], newPath + "/" + file[i]);
}
}
} catch (Exception e) {
System.out.println("复制整个文件夹内容操作出错");
e.printStackTrace(); }
} private String getTimeString(String time){
if(time.length()<){
return "" + time;
}
else{
return time;
}
}
}
-----------------------2017/3/22---------------------------------------
获得文件夹下所有文件名
public static class TreeNode {
/**节点名称**/
private String text;
/**节点路径**/
private String fileName;
/**子节点**/
private List<TreeNode> children = new ArrayList<TreeNode>();
}
public static TreeNode readfile(TreeNode tn){
try {
File file = new File(tn.fileName);
tn.text = file.getName();
if (!file.isDirectory()) {
//System.out.println(file.getName());
} else if (file.isDirectory()) {
String[] filelist = file.list();
for (int i = 0; i < filelist.length; i++) {
File readfile = new File(tn.fileName + "\\" + filelist[i]);
TreeNode tn1 = new TreeNode();
tn1.text = readfile.getName();
tn1.fileName = tn.fileName + "\\" + filelist[i];
if (!readfile.isDirectory()) {
tn.children.add(tn1);
} else if (readfile.isDirectory()) {
tn.children.add(readfile(tn1));
}
}
}
} catch (Exception e) {
System.out.println("readfile() Exception:" + e.getMessage());
}
return tn;
}
public static void main(String[] args){
TreeNode tn = new TreeNode();
tn.fileName = "C:\\Users\\42955\\Desktop\\文件夹\\软件";
readfile(tn);
System.out.println(tn);
System.out.println(tn.text);
}