jsp 目錄 檔案操作

jsp教程 目錄 檔案操作

file file1 = new file ("c:tempmynote.txt"); // in windows
file file2 = new file ("/tmp/mynote.txt"); // in linux/unix

檢測檔案路徑

import java.io.file;
public class mainclass {
  public static void main(string[] a) {
    file myfile = new file("c:" + file.separator + "jdk1.5.0" +

file.separator, "file.java");
    system.out.println(myfile.getname());
    system.out.println(myfile.getpath());
  }
}

擷取遠程圖片

import java.io.file;
import java.net.uri;

public class mainclass {
  public static void main(string[] a) throws exception {

    file remotefile = new file(new uri("file:///index.htm"));
  }
}

上級目錄

 

import java.io.file;
public class mainclass {
  public static void main(string[] a) {
    file myfile = new file("c:" + file.separator + "jdk1.5.0" +

file.separator, "file.java");
    system.out.println(myfile.getparent());
    system.out.println(myfile);
  }
}

判斷是否為目錄

import java.io.file;
public class mainclass {
  public static void main(string[] a) {
    file myfile = new file("c:" + file.separator + "jdk1.5.0" +

file.separator, "file.java");
    system.out.println(myfile.isdirectory());
  }
}

是否為檔案

import java.io.file;
public class mainclass {
  public static void main(string[] a) {
    file myfile = new file("c:" + file.separator + "jdk1.5.0" +

file.separator, "file.java");
    system.out.println(myfile.isfile());
  }
}