java File操作

/** * 创建文件夹目录 * @param pathName 文件夹路径 */ public Boolean CreateFloder (String pathName) { File myFolder = new File(pathName); try { if (!myFolder.exists()) { myFolder.mkdirs(); //mkdir()只能创建一级目录，mkdirs()可以创建多级目录 } return true; } catch (Exception e) { System.out.println("创建文件夹目录操作失败！"); e.printStackTrace(); return false; } } /** * 删除目录 * @param pathName */ public Boolean DelFolder (String pathName) { File delFolderPath = new File(pathName); try { delFolderPath.delete(); //则此目录必须为空才能删除 return true; } catch (Exception e) { System.out.println("删除文件夹目录操作失败！"); e.printStackTrace(); return false; } } /** * 创建文件 * @param pathName 路径+文件名 * @param content 要写入文件的内容 */ public Boolean CreateFile (String pathName,String content) { File myFilePath = new File(pathName); try { if (!myFilePath.exists()) { myFilePath.createNewFile(); } FileWriter resultFile = new FileWriter(myFilePath); PrintWriter myFile = new PrintWriter(resultFile); myFile.println(content); //myFile.write(content); resultFile.close(); return true; } catch (Exception e) { System.out.println("创建文件操作失败"); e.printStackTrace(); return false; } } /** * 删除文件 * @param pathName 路径+文件名 */ public Boolean DelFile (String pathName) { File myDelFile = new File(pathName); try { myDelFile.delete(); return true; } catch (Exception e) { System.out.println("删除文件操作失败"); e.printStackTrace(); return false; } } /** * 删除该目录下的所有文件夹 * @param pathName * @return */ public Boolean DelFileFromFolder (String pathName) { File delFile = new File(pathName); try { File[] files = delFile.listFiles(); for (File file : files) { if (file.isDirectory()){ file.delete(); } } return true; } catch (Exception e) { System.out.println("删除文件目录操作失败！"); e.printStackTrace(); return false; } }

/**
	 * 读取文件内容
	 * @param fileName
	 * @return
	 */
	public String ReadFile (File fileName) {
		try {
			FileReader fr = new FileReader(fileName);
			BufferedReader br = new BufferedReader(fr);
			String content = new String();
			String str = br.readLine();
			while (str != null) {
				System.out.println(str);
				content += str;
				str = br.readLine();
			}
			br.close();
			fr.close();
			return content;
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			return new String();
		} catch (IOException e) {
			e.printStackTrace();
			return new String();
		}
	}
	
	/**
	 * 写文件（删除原来的内容在写入）
	 * @param fileName
	 * @param content
	 * @return
	 */
	public Boolean WriteFile (File fileName,String content) {
		try {
			FileWriter fw = new FileWriter(fileName);
			fw.write(content);
			fw.flush();
			fw.close();
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}