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