Apache Common-IO 使用

Apache Common-IO 是什么?

　　Apache File 工具类，能够方便的操作 File

运行环境

　　jdk 1.7

　　commons-io 2.6

测试代码

 package com.m.basic;

 import org.apache.commons.io.FileUtils;
 import org.junit.Test;

 import java.io.File;
 import java.io.IOException;
 import java.net.URL;

 public class FileUtilTest {

     String path = "D:/malin/xxx/file.txt";

     @Test
     public void makeFileTest() throws IOException {
         final File file = new File("D:/malin/sss/");
         FileUtils.forceMkdir(file);
     }

     @Test
     public void forceMkdirParentTest() throws IOException {
         File file = new File(path);
         FileUtils.forceMkdirParent(file);
         if (!file.createNewFile()) {
             String message = "Unable to create File " + path;
             throw new IOException(message);
         } else {
             System.out.println("create success");
         }
     }

     @Test
     public void writingFileTest() throws IOException {
         File file = new File(path);
         for (int i = 0; i < 3; i++)
             FileUtils.writeStringToFile(file, "Hello World" + System.getProperty("line.separator"), "UTF-8", true);
     }

     @Test
     public void readingFIleTest() throws IOException {
         File file = new File(path);
         String content = FileUtils.readFileToString(file, "utf-8");
         System.out.println(content);
     }

     @Test
     public void copyingFileTest() throws IOException {
         File srcFile = new File(path);
         File destFile = new File("D:/malin/sss/file.txt");
         FileUtils.copyFile(srcFile, destFile);
     }

     @Test
     public void deletingFileTest() throws IOException {
         FileUtils.deleteDirectory(new File(path).getParentFile());
     }

     @Test
     public void convertingTest() throws IOException {
         FileUtils.copyURLToFile(new URL("http://www.baidu.com"), new File(path));
     }
 }

参考

http://commons.apache.org/proper/commons-io/description.html