Java拷贝文件到对应的路径

Posted 2020-07-20 jimw

最近发现公司部署项目上去的时候仅需要针对个别的class文件或者其他个别的文件进行覆盖就行。每次都觉得手动找路径而且又要找文件很麻烦。所以写了一个copy文件的代码出来。 代码如下

package com.controller;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

public class CopyFile {

	private static File fils;
	// 允许复制的文件类型
	public static String[] filterFile = { ".js", ".jsp", ".class", ".java",
			".xml", ".properties", ".sql" };
	private static long total = 0l;
	// private static Pattern pattern =
	// Pattern.compile("[A-z][:]/[A-z]*/OMC[0-9A-z]{0,}");
	private static List<String> l = new ArrayList<String>();;
	// 0 将Java 替换为class
	// 1 位url
	// 2 识别号 为0的时候。是添加classes 下的配置文件
	// 3 对应的路径
	static String[] string = new String[4];
	// 创建指派的路径
	private final static String clPth = "WebRoot\\WEB-INF\\classes";
	private final static String clPth2 = "WebRoot\\WEB-INF\\";

	public static void main(String[] args) throws Exception {
		// 读取文本信息
		List<String> k = readTxtFile("d:\\test2.txt");
		for (String string : k) {
			// System.out.println(string);
			if ("".equals(string) || string == null) {
				throw new IOException("请确认文件是否存在");
			}
			String[] p = getFile(string, 0);
			String classPath = "";
			for (int i = l.size(); i > 0; i--) {
				classPath += l.get(i - 1) + "\\";
			}
			String classp = "";
			// 背拷贝的数据 指定时间数据
			String df = new SimpleDateFormat("YYYYMMdd").format(new Date());
			File des = null;
			if ("".equals(classPath)) {
				// string [2] 为0的时候。是添加classes 下的配置文件
				if (p[2].equals("0")) {
					classp = p[1] + clPth2 + "\\classes";
					des = new File("D:\\java\\" + df + "\\" + clPth2
							+ "\\classes");
				} else {
					classp = p[1];
					des = new File("D:\\java\\" + df + "\\" + p[3]);
				}

			} else {
				classp = p[1] + clPth + "\\" + classPath;
				des = new File("D:\\java\\" + df + "\\" + clPth + "\\"
						+ classPath);
			}
			/*
			 * System.out.println("clPth:" + clPth);
			 * System.out.println("classPath:" + classPath);
			 * System.out.println("classp:" + classp);
			 */
			// 需要拷贝的数据
			File src = new File(classp.replace("\\", "\\\\"));
			// filterFile=new String []{p[0]};
			new CopyFile().copyFolder(src, des, filterFile, p[0]);
			// 重置
			l = new ArrayList<String>();
			;
		}
	}

	/**
	 * 读取文本数据
	 * **/
	public static List<String> readTxtFile(String filePath) {
		List<String> l = new ArrayList<String>();
		try {
			String encoding = "UTF-8";
			File file = new File(filePath);
			// System.out.println(filePath);
			if (file.isFile() && file.exists()) { // 判断文件是否存在
				InputStreamReader read = new InputStreamReader(
						new FileInputStream(file), encoding);// 考虑到编码格式
				BufferedReader bufferedReader = new BufferedReader(read);
				String lineTxt = null;
				while ((lineTxt = bufferedReader.readLine()) != null) {
					// System.out.println(lineTxt.replace("\\", "\\\\"));
					l.add(lineTxt.replace("\\", "\\\\"));
				}
				read.close();
			} else {
				System.out.println("找不到指定的文件");
			}
		} catch (Exception e) {
			System.out.println("读取文件内容出错");
			e.printStackTrace();
		}
		return l;
	}

	// 讀文檔
	private static String[] getFile(String path, int flag) {
		fils = new File(path);
		// System.out.println("path:"+path);
		if (fils.isFile()) {
			// System.out.println("fils:"+fils.getName());
			string[0] = fils.getName().replace("java", "class");
		} else {
			// 文件夹名字
			if (!"src".equals(fils.getName())) {
				l.add(fils.getName());
			}

			if ("".equals(fils.getName())) {
				l.add("classes");
			}
		}
		if (fils.getParent().lastIndexOf("src") != -1) {
			path = fils.getParent();
			if ((path.lastIndexOf("src") + 3) != path.length()) {
				return getFile(path, 0);
			} else if ((path.lastIndexOf("src")) <= path.length()) {
				return getFile(path, 1);
			}
		}
		if (flag == 1) {
			// D:\springmvc
			string[1] = path.substring(0, path.lastIndexOf("src")).replace(
					"src", "");
			string[2] = "0";
		} else {

			System.out.println(path);
			if (path.lastIndexOf("src") > -1) {
				string[1] = path.substring(0, path.lastIndexOf("src"));
			} else {

				// /D:\\springmvc01\\WebRoot\\WEB-INF\\index.jsp
				string[1] = path.replace(string[0], "");
			}
			string[2] = "";
			string[3] = path.substring(path.indexOf("WebRoot"),
					path.indexOf(string[0]));
		}

		return string;
		/*
		 * for (int i = 0; i < fils.listFiles().length; i++) { for (File file :
		 * fils.listFiles()) { //如果不是目录，直接添加 if (!file.isDirectory()) {
		 * System.out.println(file.getAbsolutePath()); } else {
		 * System.out.println(fils.getAbsolutePath()); //对于目录文件，递归调用
		 * getFile(file.getAbsolutePath()); } } }
		 */
	}

	/**
	 * 
	 * @param folder
	 * @param filterFile
	 * @param fileName
	 * @throws Exception
	 */
	public void copyFolder(File srcFolder, File destFolder,
			String[] filterFile, String fname) throws Exception {
		File[] files = srcFolder.listFiles();
		// System.out.println(destFolder);
		// 先删除 創建目錄
		destFolder.mkdirs();

		for (File file : files) {
			// System.out.println("file.getName():"+file.getName());

			if (file.isFile()) {
				if (file.getName().equals(fname)) {
					String pathname = destFolder + File.separator
							+ file.getName();
					for (String suff : filterFile) {
						if (pathname.endsWith(suff)) {
							File dest = new File(pathname);
							File destPar = dest.getParentFile();
							destPar.mkdirs();
							if (!dest.exists()) {
								dest.createNewFile();
							}
							// D:\springmvc\WebRoot\WEB-INF\index.jsp
							// D:\java\20160603\WebRoot\index.jsp
							// 为了防止重命名并且不在同一个路径下COPY
							if (file.getParent()
									.substring(file.getParent().length() - 4,
											file.getParent().length() - 1)
									.equals(dest.getParent().substring(
											dest.getParent().length() - 4,
											dest.getParent().length() - 1))) {
								if (file.length() == 0) {
									throw new IOException("文件不允许为空"
											+ "，需要处理的文件为：" + file.getParent()
											+ "\\" + file.getName());
								}
								copyFile(file, dest);
							}

						}
					}
				}
			} else {
				copyFolder(file, destFolder, filterFile, fname);
			}
		}
	}

	/***
	 * copy file
	 * 
	 * @param src
	 * @param dest
	 * @throws IOException
	 */
	private void copyFile(File src, File dest) throws Exception {
		BufferedInputStream reader = null;
		BufferedOutputStream writer = null;

		try {
			reader = new BufferedInputStream(new FileInputStream(src));
			writer = new BufferedOutputStream(new FileOutputStream(dest));
			byte[] buff = new byte[reader.available()];
			while ((reader.read(buff)) != -1) {
				writer.write(buff);
			}
			total += 1;
		} catch (Exception e) {
			throw e;
		} finally {
			writer.flush();
			writer.close();
			reader.close();
			// 记录
			String temp = "\ncopy:\n" + src + "\tsize:" + src.length()
					+ "\nto:\n" + dest + "\tsize:" + dest.length()
					+ "\n complate\n totoal:" + total;
			System.out.println(temp);
		}
	}
}