文件处理工具类

﹏ヽ暗。殇╰゛Y 2022-10-22 09:23 206阅读 0赞

package com.hhh.framework.tools.utils;
    
    import java.io.*;
    import java.util.ArrayList;
    import java.util.List;
    
    public class FileHandleUtils {
    	
    	
    	/** D:/eclipse/workspace/data-sync-client/target/data-sync-client-0.0.1.jar!/BOOT-INF/classes!/file , conf
    	 *  -----> D:/eclipse/workspace/data-sync-client/target/conf
    	 *  
    	 * @param filePath
    	 * @param fileStr
    	 * @return
    	 */
    	public static String getRealPath(String filePath,String fileStr){
    		String newfilePath = filePath;
    		if(filePath.indexOf("!")!=-1){
    			String path = filePath.substring(0, filePath.indexOf("!"));
    			String paths[] = path.split("/");
    			String thisFileName = paths[paths.length-1];
    			newfilePath = filePath.substring(0,filePath.indexOf(thisFileName))+ fileStr;
    			if(newfilePath.contains("file:")){
    				newfilePath = newfilePath.replace("file:", "");
    			}
    		}
    		return newfilePath;
    	}
    	public static String findFile(String fileName, String fileStr) {
    		String filePath = FileHandleUtils.class.getResource("/" ).getPath()+ fileStr;
    		filePath = getRealPath(filePath,fileStr);
    		filePath  = filePath+File.separator+fileName;
    		return filePath;
    	}
    	
    	public static List<String> findFileByFolder(String startWith, String fileStr) {
    		List<String> pathList = new ArrayList<String>();
    		String filePath = FileHandleUtils.class.getResource("/" ).getPath()+ fileStr;
    		filePath = getRealPath(filePath,fileStr);
    		File parentFile = new File(filePath);
    		if (!parentFile.exists()) {
    			parentFile.mkdirs();
    			return pathList;
    		}
    		File file = new File(filePath);
    		if (file.exists()) {
    			File[] files = file.listFiles();
    			for (File file2 : files) {
    				if (file2.getName().startsWith(startWith)) {
    					pathList.add(file2.getPath());
    				} else {
    				}
    			}
    		}
    		return pathList;
    	}
    
    
    	/**
    	 * 将字符串写入文件
    	 * 
    	 * @param text
    	 * @param fileStr
    	 * @param isAppend
    	 * @throws IOException
    	 */
    	public static String writeFile(byte[] text, String filepath,String ofileName, boolean isAppend) throws IOException {
    		int num = 0 ;
    		
    		File file = null;
    		File parentFile =null;
    		String fileName = ofileName;
    		while(true){
    			if(num != 0 ){
    				int endIndex = ofileName.lastIndexOf(".");
    				fileName = ofileName.substring(0, endIndex)+"("+num+")"+ofileName.substring(endIndex);
    			}
    			file = new File(filepath+File.separator+fileName);
    			parentFile = file.getParentFile();
    			if (!parentFile.exists()) {
    				parentFile.mkdirs();
    			}
    			if (!file.exists()) {
    				file.createNewFile();
    				break;
    			}
    			num++;
    		}
    		
    		FileOutputStream f = new FileOutputStream(file, isAppend);
    		f.write(text);
    		f.close();
    		/** 内存优化 2018-1-19 **/
    		f = null;
    		file = null;
    		parentFile = null;
    		return fileName;
    	}
    	
    	/**
    	 * 绝对路径，读文件
    	 * 
    	 * @param fileStr
    	 * @return
    	 */
    	public static String readFileByFullPath(String fileStr) {
    		StringBuilder result = new StringBuilder();
    		try {
    			File file = new File(fileStr);
    			if(!file.exists()){
    				return "";
    			}
    			BufferedReader br = new BufferedReader(new FileReader(file));// 构造一个BufferedReader类来读取文件
    			String s = null;
    			while ((s = br.readLine()) != null) {// 使用readLine方法，一次读一行
    				result.append(System.lineSeparator() + s);
    			}
    			br.close();
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    		return result.toString();
    	}
    	/**
    	 * 绝对路径，读文件
    	 *
    	 * @param fileStr
    	 * @return
    	 */
    	public static String readFileByFullPathWithCharset(String fileStr,String charsetName) {
    		StringBuilder result = new StringBuilder();
    		try {
    			File file = new File(fileStr);
    			if(!file.exists()){
    				return "";
    			}
    			BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file),charsetName));// 构造一个BufferedReader类来读取文件
    			String s = null;
    			while ((s = br.readLine()) != null) {// 使用readLine方法，一次读一行
    				result.append(System.lineSeparator() + s);
    			}
    			br.close();
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    		return result.toString();
    	}
    }