複製代碼代碼如下:
package com.pzq.io;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.StringReader;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.io.FileUtils;
/**
* 文件操作工具類
* @version 1.0 2013/07/16
*
*/
public class FileUtil {
/**
* 複製檔案或目錄,複製前後檔案完全一樣。
* @param resFilePath 來源檔案路徑
* @param distFolder 目標資料夾
* @IOException 當操作發生例外狀況時拋出
*/
public static void copyFile(String resFilePath, String distFolder)
throws IOException {
File resFile = new File(resFilePath);
File distFile = new File(distFolder);
if (resFile.isDirectory()) { // 目錄時
FileUtils.copyDirectoryToDirectory(resFile, distFile);
} else if (resFile.isFile()) { // 檔案時
// FileUtils.copyFileToDirectory(resFile, distFile, true);
FileUtils.copyFileToDirectory(resFile, distFile);
}
}
/**
* 刪除一個檔案或目錄
* @param targetPath 檔案或目錄路徑
* @IOException 當操作發生例外狀況時拋出
*/
public static void deleteFile(String targetPath) throws IOException {
File targetFile = new File(targetPath);
if (targetFile.isDirectory()) {
FileUtils.deleteDirectory(targetFile);
} else if (targetFile.isFile()) {
targetFile.delete();
}
}
/**
* 將字串寫入指定檔案(當指定的父路徑中資料夾不存在時，會最大限度去創建，以保證保存成功！)
*
* @param res 原字串
* @param filePath 檔案路徑
* @return 成功標記
* @throws IOException
*/
public static boolean string2File(String res, String filePath) throws IOException {
boolean flag = true;
BufferedReader bufferedReader = null;
BufferedWriter bufferedWriter = null;
try {
File distFile = new File(filePath);
if (!distFile.getParentFile().exists()) {// 不存在時創建
distFile.getParentFile().mkdirs();
}
bufferedReader = new BufferedReader(new StringReader(res));
bufferedWriter = new BufferedWriter(new FileWriter(distFile));
char buf[] = new char[1024]; // 字元緩衝區
int len;
while ((len = bufferedReader.read(buf)) != -1) {
bufferedWriter.write(buf, 0, len);
}
bufferedWriter.flush();
bufferedReader.close();
bufferedWriter.close();
} catch (IOException e) {
flag = false;
throw e;
}
return flag;
}
/**
* 取得指定文件內容
*
* @param res 原字串
* @param filePath 檔案路徑
* @return 成功標記
* @throws IOException
*/
public static List<String> getContentFromFile(String filePath) throws IOException {
List<String> lists = null;
try {
if(!(new File(filePath).exists())){
return new ArrayList<String>();
}
lists = FileUtils.readLines(new File(filePath), Charset.defaultCharset());
} catch (IOException e) {
throw e;
}
return lists;
}
/**
* 給指定檔追加內容
* @param filePath
* @param contents
*/
public static void addContent(String filePath, List<String> contents) throws IOException {
try {
FileUtils.writeLines(new File(filePath),contents);
} catch (IOException e) {
throw e;
}
}
}