利用List Map Set集合編寫一個簡單桌面整理，內含完整原始碼分享
阿新 • • 發佈：2019-01-26
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獲取桌面資料夾所有檔案，把檔案包裝成自己寫的filemod類，拆分出檔案字尾。按照字尾把檔案分類後copy到對應的資料夾中，如果copy成功則將桌面檔案刪除處理。暫未實現桌面資料夾內的檔案遍歷。
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File 介面
public interface file { //get and setter public String getFileName(); public String getFilePath(); public String getFileSuffix(); public long getFileSize(); public void setFileName(String fname); public void setFilePath(String filePath); public void setFileSize(int size); public void setFileSuffix(String suffix); }
實現類 FileMod
import java.io.File; public class FileMod implements file{ private String fileName = null; private String filePath=null; private longfileSize=-1; private String fileSuffix=null; private File f=null; private boolean fisnull=true; private String toPath=""; public FileMod(File f){ this.f=f; this.fisnull=false; } public FileMod(){ } public String getFileName() { if(!fisnull){ returnf.getName(); }else{ return this.fileName; } } public String getFilePath() { if(!fisnull){ return f.getAbsolutePath(); }else{ return this.filePath; } } public String getFileSuffix() { if(!fisnull){ String name=f.getName(); int dindex= name.lastIndexOf("."); return name.substring(dindex+1,name.length()); }else{ return this.getFileSuffix(); } } public long getFileSize() { if(!fisnull){ if(!f.isDirectory()){ return f.length(); }else{ return this.fileSize; } } return this.fileSize; } public void setFileName(String fname) { if(!fisnull){ }else{ } } public void setFilePath(String filePath) { if(!fisnull){ }else{ } } public void setFileSize(int size) { if(!fisnull){ }else{ } } public void setFileSuffix(String suffix) { if(!fisnull){ }else{ } } public void setToPath(String toPath){ this.toPath=toPath; } public String getToPath(){ return this.toPath; } public File getFile(){ return f; } public boolean deleteFile(){ if(!f.isDirectory()&& f.exists()){ f.delete(); return true; }else if(!f.exists()){ System.out.println("Error:指定檔案不存在--"+f.getAbsolutePath()); return false; }else{ System.out.println("Error:暫不提供資料夾刪除操作。"); return false; } } }
FileUtil類
import java.io.*; import java.util.*; public class FileUtil { private File desktop; private String[] dirlist; private FileMod[] fmarr; private Set keySet; private Map<String,List<FileMod>>fileMods; public FileUtil(String desktoppath){ this.desktop=new File(desktoppath); if(this.desktop.isDirectory()){ this.dirlist=this.desktop.list(); } } /** * 輸出當前目錄所有的檔案 * */ public void printDir(){ System.out.println("當前路徑下存在的檔案或目錄有"); for (int i=0;i<this.dirlist.length;i++){ System.out.println(this.dirlist[i]); } } //檢索當前目錄下所有的檔案字尾 public void findAllSuffix(){ File[] farr=this.desktop.listFiles(); System.out.println("11111"+farr[2].getPath()); if(farr.length>0){ fmarr=new FileMod[farr.length]; for(int i=0;i<farr.length;i++){ if((farr[i].getName().lastIndexOf(".")!=-1)){ fmarr[i]=new FileMod(farr[i]); //System.out.println(fmarr[i].getFileSuffix()); } } } } //將目錄中所有檔案按照型別分類 public void Fileclassify(){ if(fmarr.length>0){ fileMods=new HashMap<String, List<FileMod>>(); List<String> list=new ArrayList<String>(); for(int i=0;i<fmarr.length;i++){ if(fmarr[i]!=null){ list.add(fmarr[i].getFileSuffix()); }else{ //System.out.println("空座標："+i); } } list=this.removeDuplicte(list); Iterator<String> iterable= list.iterator(); while (iterable.hasNext()){ List<FileMod> filemodList=new ArrayList<FileMod>(); fileMods.put(iterable.next(),filemodList); } for (int i=0;i<fmarr.length;i++){ if (fmarr[i]!=null){ List<FileMod> filist=fileMods.get(fmarr[i].getFileSuffix()); filist.add(fmarr[i]); } } }else{ fileMods=null; } } //按照字尾名將當前所有檔案分類 public void printAllFile(){ keySet=fileMods.keySet(); Iterator it= keySet.iterator(); while (it.hasNext()){ String key=it.next().toString(); System.out.println("<<<<<<<<<<<<<<當前檔案型別："+key); List ls= fileMods.get(key); for(int i=0;i<ls.size();i++){ System.out.println(((FileMod)ls.get(i)).getFileName()); } System.out.println(); } } public void copyFileMods(String homepath) throws IOException { File homedir=new File(homepath); File dir; if(!homedir.exists()){ homedir.mkdir(); } Iterator it=keySet.iterator(); while(it.hasNext()){ String key=(String) it.next(); dir=new File(homepath+key+"\\"); if(!dir.exists()){ dir.mkdir(); } List li=fileMods.get(key); Iterator listit= li.iterator(); for(int i=0;i<li.size();i++){ while (listit.hasNext()){ FileMod fm=(FileMod) listit.next(); this.setToPathOnFileMod(dir.getAbsolutePath()+"\\"+fm.getFileName(),fm); System.out.println("當前filemod to path："+fm.getToPath()); boolean copyisok=this.copyFile(fm.getFile(),new File(fm.getToPath())); if(copyisok){ fm.deleteFile(); } } } } } public boolean copyFile(File fromFile,File toFile) throws IOException { FileInputStream ins=null; FileOutputStream out=null; try{ ins = new FileInputStream(fromFile); out = new FileOutputStream(toFile); byte[] b = new byte[1024]; int n=0; while((n=ins.read(b))!=-1){ out.write(b, 0, n); } ins.close(); out.close(); return true; }catch(Exception e){ e.printStackTrace(); if(ins!=null){ ins.close(); } if(out!=null){ out.close(); } return false; } } public void setToPathOnFileMod(String toPath,FileMod fileMod){ fileMod.setToPath(toPath); } public List<String> removeDuplicte(List<String> list){ HashSet<String> set=new HashSet<String>(list); list.clear(); list.addAll(set); return list; } public static void main(String[] Args) throws IOException { while(true){ System.out.println("請輸入您的桌面路徑"); BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String descktopPath; descktopPath = br.readLine(); if("exit".equals(descktopPath)){ break; } File desktop=new File(descktopPath); if(desktop.exists()&&desktop.isDirectory()){ System.out.println("<<<<<<<<開始整理"); FileUtil fu=new FileUtil(descktopPath); fu.printDir(); fu.findAllSuffix(); fu.Fileclassify(); fu.printAllFile(); try { fu.copyFileMods("D:\\home\\"); }catch (Exception e){ System.out.println("檔案轉換時出現了異常"+e.getMessage()); } }else{ System.out.println("輸入路徑有誤請重新輸入"); } } } }
執行結果：
