在使用java进行开发时常常会用到文件和目录的增删复制等方法。我写了一个小工具类。和大家分享，希望大家指正：
package com.wangpeng.utill; import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.InputStream;
import java.io.PrintWriter; /**
* @author wangpeng
*
*/
public class ToolOfFile { /**
* 创建目录
*
* @param folderPath
* 目录目录
* @throws Exception
*/
public static void newFolder(String folderPath) throws Exception {
try {
java.io.File myFolder = new java.io.File(folderPath);
if (!myFolder.exists()) {
myFolder.mkdir();
}
} catch (Exception e) {
throw e;
}
} /**
* 创建文件
*
* @param filePath
* 文件路径
* @throws Exception
*/
public static void newFile(String filePath) throws Exception {
try {
File myFile = new File(filePath);
if (!myFile.exists()) {
myFile.createNewFile();
}
} catch (Exception e) {
throw e;
}
} /**
* 创建文件，并写入内容
*
* @param filePath
* 文件路径
* @param fileContent
* 被写入的文件内容
* @throws Exception
*/
public static void newFile(String filePath, String fileContent)
throws Exception {
// 用来写入字符文件的便捷类
FileWriter fileWriter = null;
// 向文本输出流打印对象的格式化表示形式,使用指定文件创建不具有自己主动行刷新的新
PrintWriter printWriter = null;
try {
File myFile = new File(filePath);
if (!myFile.exists()) {
myFile.createNewFile();
} fileWriter = new FileWriter(myFile);
printWriter = new PrintWriter(fileWriter); printWriter.print(fileContent);
printWriter.flush();
} catch (Exception e) {
throw e;
} finally {
if (printWriter != null) {
printWriter.close();
}
if (fileWriter != null) {
fileWriter.close();
}
}
} /**
* 复制文件
*
* @param oldPath
* 被拷贝的文件
* @param newPath
* 复制到的文件
* @throws Exception
*/
public static void copyFile(String oldPath, String newPath)
throws Exception {
InputStream inStream = null;
FileOutputStream outStream = null;
try {
int byteread = 0;
File oldfile = new File(oldPath);
// 文件存在时
if (oldfile.exists()) {
inStream = new FileInputStream(oldfile);
outStream = new FileOutputStream(newPath); byte[] buffer = new byte[1444];
while ((byteread = inStream.read(buffer)) != -1) {
outStream.write(buffer, 0, byteread);
}
outStream.flush();
}
} catch (Exception e) {
throw e;
} finally {
if (outStream != null) {
outStream.close();
}
if (inStream != null) {
inStream.close();
}
}
} /**
* 复制文件
* @param inStream 被拷贝的文件的输入流
* @param newPath 被复制到的目标
* @throws Exception
*/
public static void copyFile(InputStream inStream, String newPath)
throws Exception {
FileOutputStream outStream = null;
try {
int byteread = 0;
outStream = new FileOutputStream(newPath);
byte[] buffer = new byte[1444];
while ((byteread = inStream.read(buffer)) != -1) {
outStream.write(buffer, 0, byteread);
}
outStream.flush();
} catch (Exception e) {
throw e;
} finally {
if (outStream != null) {
outStream.close();
}
if (inStream != null) {
inStream.close();
}
}
} /**
* 复制目录
*
* @param oldPath
* 被复制的目录路径
* @param newPath
* 被复制到的目录路径
* @throws Exception
*/
public static void copyFolder(String oldPath, String newPath)
throws Exception {
try {
(new File(newPath)).mkdirs(); // 假设目录不存在 则建立新目录
File a = new File(oldPath);
String[] file = a.list();
File tempIn = null;
for (int i = 0; i < file.length; i++) {
if (oldPath.endsWith(File.separator)) {
tempIn = new File(oldPath + file[i]);
} else {
tempIn = new File(oldPath + File.separator + file[i]);
} if (tempIn.isFile()) {
copyFile(tempIn.getAbsolutePath(),
newPath + "/" + (tempIn.getName()).toString());
} else if (tempIn.isDirectory()) {// 假设是子目录
copyFolder(oldPath + "/" + file[i], newPath + "/" + file[i]);
}
}
} catch (Exception e) {
throw e;
}
} /**
* 删除文件
*
* @param filePathAndName
*/
public static void delFileX(String filePathAndName) {
File myDelFile = new File(filePathAndName);
myDelFile.delete();
} /**
* 删除目录
*
* @param path
*/
public static void delForder(String path) {
File delDir = new File(path);
if (!delDir.exists()) {
return;
}
if (!delDir.isDirectory()) {
return;
}
String[] tempList = delDir.list();
File temp = null;
for (int i = 0; i < tempList.length; i++) {
if (path.endsWith(File.separator)) {
temp = new File(path + tempList[i]);
} else {
temp = new File(path + File.separator + tempList[i]);
} if (temp.isFile()) {
temp.delete();
} else if (temp.isDirectory()) {
// 删除完里面全部内容
delForder(path + "/" + tempList[i]);
}
}
delDir.delete();
} public static void main(String[] args) {
String oldPath = "F:/test/aaa/";
String newPath = "F:/test/bbb/"; try {
// ToolOfFile.newFolder("F:/test/hello/");
// ToolOfFile.newFile("F:/test/hello/world.txt","我爱你，the world！ ");
ToolOfFile.copyFolder(oldPath, newPath);
// ToolOfFile.delForder("F:/test/hello");
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("OK");
}
}