package com.test.util; import java.util.HashMap; import java.util.Map; public class FileStringUtil { public Map<String, String> getFileDetails(String fileString){ Map<String, String> detailMap = new HashMap<>(); String[] splitStr = fileString.split("\\|"); for (int i = 0; i < splitStr.length; i++) { detailMap.put("fileDetail"+i, splitStr[i]); } return detailMap; } }
4. com.test.util.FileUtil.java
package com.test.util; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.Writer; import java.util.ArrayList; import java.util.List; import org.apache.catalina.authenticator.SavedRequest; public class FileUtil { private final String SEP = File.separator; int count = 0; public static String [] getFileName(String path){ File file = new File(path); String [] fileName = file.list(); return fileName; } public boolean isFileExist(String path) { try { File file = new File(path); return file.exists(); } catch (Exception ex) { ex.printStackTrace(); } return false; } public boolean mkDir(String path) { File dir = new File(path); boolean res = dir.mkdirs(); return res; } public List<String> readTxtFile(String filePath) { List<String> resultList = new ArrayList<>(); try { String encoding = "UTF-8"; File file = new File(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) { if(lineTxt.length() < 2){ continue; }else { resultList.add(lineTxt); } } 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 resultList; } public List<String> readTxtFileByPath(String filePath,String Path) { String savePath = "c:\\"+Path; List<String> resultList = new ArrayList<>(); try { String encoding = "UTF-8"; File file = new File(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; int lineNumber = 0; while ((lineTxt = bufferedReader.readLine()) != null) { lineNumber++; System.out.println("lineNumber "+lineNumber); if(lineTxt.length() < 2){ continue; }else { String lastRead = lineTxt.substring(lineTxt.lastIndexOf("|")+1,lineTxt.length()); String fristRead = lineTxt.substring(0,lineTxt.indexOf("|")); if(lastRead.toUpperCase().equals(savePath.toUpperCase())){ File savePathFile = new File(savePath); File[] files = savePathFile.listFiles(); if(files.length == 0){//當文件夾所有文件不存在時 lineTxt = ""; System.out.println("none file of "+savePath); }else { boolean fileDelete = true; for (int i = 0; i < files.length; i++) { System.out.println("files" + files[i].getName()); System.out.println("fristRead"+fristRead); if(fristRead.equals(files[i].getName())){ //當文件列表中存在一則記錄文件名與列表文件名匹配時,證明文件沒有被刪除 fileDelete = false; } } if (fileDelete) { //文件是否被刪除，是：刪除該條記錄；否：記錄應當存留 deleteLineText(lineNumber); }else { resultList.add(lineTxt); } } } } } 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 resultList; } public void deleteLineText(int lineNum){ // BufferedReader br; try { // br = new BufferedReader(new FileReader("c:/a.txt ")); BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("c:\\a.txt"),"UTF-8")); StringBuffer sb=new StringBuffer(4096); String temp=null; int line=0; while((temp=br.readLine())!=null){ line++; if(line==lineNum) continue; sb.append(temp).append("\r\n"); // sb.append(new String(temp.getBytes("Unicode"), "UTF-8")).append( "\r\n "); } br.close(); OutputStreamWriter write = new OutputStreamWriter(new FileOutputStream("c:/a.txt "),"UTF-8"); BufferedWriter writer=new BufferedWriter(write); // BufferedWriter bw=new BufferedWriter(new FileWriter( "c:/a.txt ")); writer.write(sb.toString()); writer.close(); } catch (FileNotFoundException e) { System.out.println(e.toString()); e.printStackTrace(); } catch (IOException e) { System.out.println(e.toString()); e.printStackTrace(); } } public void writeTxtFile(File file, String fileContent) { try { OutputStreamWriter write = new OutputStreamWriter(new FileOutputStream(file),"UTF-8"); BufferedWriter writer=new BufferedWriter(write); writer.write(fileContent); writer.close(); } catch (Exception e) { e.printStackTrace(); } } public int[] getAllFileSize(String[] filePath){ int[] fileSizeArray = new int[filePath.length]; for (int i = 0; i < filePath.length; i++) { if(!isFileExist("c:\\"+filePath[i])){ mkDir("c:\\"+filePath[i]); } File file = new File("c:\\"+filePath[i]); File[] files = file.listFiles(); fileSizeArray[i] = files.length; } return fileSizeArray; } public String deleteFile(){ String result = ""; if(count == 0){ System.out.println("0"); result = "0"; }else { System.out.println("deleteFile"); result = "deleteFile"; } count++; return result; } public void appendMethod(String content) { try { File file = new File("C:\\a.txt"); if (!file.exists()){ file.createNewFile(); writeTxtFile(file,content); }else { Writer out = new BufferedWriter( new OutputStreamWriter(new FileOutputStream("C:\\a.txt",true),"UTF-8")); out.write("\r\n"+content); out.close(); } } catch (IOException e) { e.printStackTrace(); } } public static boolean copyFile(String fromFile, String toFile) { try { InputStream fosfrom = new FileInputStream(fromFile); OutputStream fosto = new FileOutputStream(toFile); byte bt[] = new byte[4096]; int c; while ((c = fosfrom.read(bt)) > 0) { fosto.write(bt, 0, c); } fosfrom.close(); fosto.close(); bt = null; return true; } catch (Exception ex) { ex.printStackTrace(); return false; } } }
web.xml配置