文件操作

import java.io.File; import java.io.IOException; import java.util.Calendar; import java.util.Date; import java.util.List; import java.util.Random;  import org.apache.commons.io.FileUtils; import org.apache.struts2.ServletActionContext; /**  * 文件操作工具类  * @author deruiyu  *  */ public class FileUtil {  /**   * 构造函数   * @param savePathName 上传保存的文件夹名字   */  public FileUtil(String savePathName){   this.savePathName = savePathName;   String path = getUpPath();   upFiles = new File(path);        if (!upFiles.exists()) {         upFiles.mkdirs();        }   }    private boolean allowOver = false;    private boolean randomName = true;    public boolean isRandomName() {   return randomName;  }  public void setRandomName(boolean randomName) {   this.randomName = randomName;  }    public boolean isAllowOver() {   return allowOver;  }  public void setAllowOver(boolean allowOver) {   this.allowOver = allowOver;  }   private File upFiles;    public FileUtil(){}    private String savePathName;  /**   * 获取上传地址   * @return   */  private String getUpPath(){   return ServletActionContext.getServletContext().getRealPath("/"+savePathName);  }  /**   * 获取文件路径   * @param filePath   * @return   */  public static String getFilePath(String filePath){   return ServletActionContext.getServletContext().getRealPath("/"+filePath);  }  /**   * 文件删除   * @param filePath 文件相对路径   * @return   */  public static boolean delPathFile(String filePath){   filePath = getFilePath(filePath);   File file = new File(filePath);     if(file.exists()){    return file.delete();   }else{    return false;   }  }  /**   * 文件删除（以当前工具类参数路径为准，如果参数路径为空，则将文件名当做相对路径）   * @param fileName 文件名   * @return   */  public boolean delFile(String fileName){   if(savePathName!=null){    String filePath = getUpPath()+"/"+fileName;    File file = new File(filePath);     if(file.exists()){     return file.delete();    }else{     return false;    }   }else{    return delPathFile(fileName);   }  }    /**   * 上传文件   * @return   */  public String[] uploadFile(List<File> upload,List<String> uploadFileName){   String[] filePath = new String[upload.size()];   try {     String path = getUpPath();    File file = new File(path);         if (!file.exists()) {          file.mkdirs();         }         for (int i = 0; i < upload.size(); i++) {          String upname = uploadFileName.get(i);        if(isRandomName()){         upname = getUpName(upname);        }        File upFile = new File(file,upname);        if(isAllowOver()&&upFile.exists()&&!upFile.delete()){         continue;        }        FileUtils.copyFile(upload.get(i), upFile);          filePath[i] = savePathName+"/"+upname;       }        }catch (IOException e) {         e.printStackTrace();        }     return filePath;  }    /**   * 上传文件   * @return   */  public String uploadFileOne(File uploadFile,String uploadFileName){   String filePath = null;   try {     String path = getUpPath();    File file = new File(path);         if (!file.exists()) {          file.mkdirs();         }          if(isRandomName()){         uploadFileName = getUpName(uploadFileName);        }        File upFile = new File(file,uploadFileName);        if(isAllowOver()&&upFile.exists()&&!upFile.delete()){         return null;        }        FileUtils.copyFile(uploadFile, upFile);          filePath = savePathName+"/"+uploadFileName;      }catch (IOException e) {         e.printStackTrace();        }     return filePath;  }    /**   * 上传文件   * @throws IOException    */  public void uploadFile(File upload,String saveFileName) throws IOException{   FileUtils.copyFile(upload, new File(upFiles,saveFileName));       }       /**      * 随机生成上传名称      * @param name      * @return      */  public String getUpName(String name){   Calendar time=Calendar.getInstance();      Random r = new Random();      String upName=(r.nextInt(900)+100)+"_";      upName+= time.get(Calendar.YEAR)+""+(time.get(Calendar.MONTH)+1)+""+time.get(Calendar.DAY_OF_MONTH)        +""+time.get(Calendar.HOUR_OF_DAY)+""+time.get(Calendar.MINUTE)+""+time.get(Calendar.SECOND)+""+time.get(Calendar.MILLISECOND);      upName+="_"+(r.nextInt(90)+10);      upName+=name.substring(name.lastIndexOf('.'));      return upName;     }       /**      * 是否是允许上传类型      * @param name      * @return      */     public static boolean canupType(String name){      if(name.indexOf(".html")!=-1) return false;      if(name.indexOf(".js")!=-1) return false;      if(name.indexOf(".css")!=-1) return false;      if(name.indexOf(".jsp")!=-1) return false;      if(name.indexOf(".bat")!=-1) return false;      if(name.indexOf(".java")!=-1) return false;      if(name.indexOf(".class")!=-1) return false;      return true;     }  }