java实现读取、删除文件夹下的文件

java实现读取、删除文件夹下的文件

package test.com;
 
import java.io.file;
import java.io.filenotfoundexception;
import java.io.ioexception;
 
public class readfile {
  public readfile() {
  }
  /**
   * 读取某个文件夹下的所有文件
   */
  public static boolean readfile(string filepath) throws filenotfoundexception, ioexception {
      try {
 
          file file = new file(filepath);
          if (!file.isdirectory()) {
//              system.out.println("文件");
//              system.out.println("path=" + file.getpath());
//              system.out.println("absolutepath=" + file.getabsolutepath());
              system.out.println(file.getname());
 
          } else if (file.isdirectory()) {
              string[] filelist = file.list();
              for (int i = 0; i < filelist.length; i++) {
                  file readfile = new file(filepath + "\\" + filelist[i]);
                  if (!readfile.isdirectory()) {
//                      system.out.println("path=" + readfile.getpath());
//                      system.out.println("absolutepath="
//                              + readfile.getabsolutepath());
                      system.out.println(readfile.getname());
 
                  } else if (readfile.isdirectory()) {
                      readfile(filepath + "\\" + filelist[i]);
                  }
              }
 
          }
 
      } catch (filenotfoundexception e) {
          system.out.println("readfile()  exception:" + e.getmessage());
      }
      return true;
  }
 
  /**
   * 删除某个文件夹下的所有文件夹和文件
   */
   
   
  /*public static boolean deletefile(string delpath)
          throws filenotfoundexception, ioexception {
      try {
 
          file file = new file(delpath);
          if (!file.isdirectory()) {
              system.out.println("1");
              file.delete();
          } else if (file.isdirectory()) {
              system.out.println("2");
              string[] filelist = file.list();
              for (int i = 0; i < filelist.length; i++) {
                  file delfile = new file(delpath + "\\" + filelist[i]);
                  if (!delfile.isdirectory()) {
                      system.out.println("path=" + delfile.getpath());
                      system.out.println("absolutepath="
                              + delfile.getabsolutepath());
                      system.out.println("name=" + delfile.getname());
                      delfile.delete();
                      system.out.println("删除文件成功");
                  } else if (delfile.isdirectory()) {
                      deletefile(delpath + "\\" + filelist[i]);
                  }
              }
              file.delete();
 
          }
 
      } catch (filenotfoundexception e) {
          system.out.println("deletefile()  exception:" + e.getmessage());
      }
      return true;
  }*/
   
  public static void main(string[] args) {
      try {
          readfile("c:\\users\\sw\\desktop\\skj_h25補正\\004_rcag\\003_skj");
          // deletefile("d:/file");
      } catch (filenotfoundexception ex) {
      } catch (ioexception ex) {
      }
      system.out.println("ok");
  }
 
}

方法二：

package otherstudy;

import java.io.file;
import java.io.filenotfoundexception;
import java.io.ioexception;

/**
 * @classname: testreadfile
 * @createtime: aug 1, 2014 11:42:44 am
 * @author: mayi
 * @description: 读取和删除文件夹下的所有文件
 *
 */
public class testreadfile {
	/**
	 * 获取工程的webroot的绝对路径
	 * @return
	 */
	string getprojectpath(){
		//得到形如"/d:/${workspace}/${projectname}/webroot/web-inf/classes/"的 路径
    string path=this.getclass().getresource("/").getpath();
    //从路径字符串中取出工程路径
    path=path.substring(1, path.indexof("web-inf/classes"));
    system.out.println("工程路径："+path);
    return path;
	}
	/**
	 * @param args
	 */
	public static void main(string[] args) {
		testreadfile trf=new testreadfile();
		string xmlpath = trf.getprojectpath()+ "testdocs";
		try {
			readallfile(xmlpath);
		} catch (filenotfoundexception e) {
			e.printstacktrace();
		} catch (ioexception e) {
			e.printstacktrace();
		}
	}
	/**
	 * 读取指定路径文件夹下的所有文件
	 * @param filepath
	 * @return
	 * @throws filenotfoundexception
	 * @throws ioexception
	 */
	public static boolean readallfile(string filepath)
			throws filenotfoundexception, ioexception {
		try {
			file file = new file(filepath);
			if (!file.isdirectory()) {
				system.out.println("\n文件信息：");
				system.out.println("\t相对路径=" + file.getpath());
				system.out.println("\t绝对路径=" + file.getabsolutepath());
				system.out.println("\t文件全名=" + file.getname());

			} else if (file.isdirectory()) {
				system.out.println("\n文件夹内文件列表信息：");
				file[] filelist = file.listfiles();
				for (int i = 0; i < filelist.length; i++) {
					file readfile = filelist[i];
					if (!readfile.isdirectory()) {
						system.out.println("\n\t相对路径=" + readfile.getpath());
						system.out.println("\t绝对路径=" + readfile.getabsolutepath());
						system.out.println("\t文件全名=" + readfile.getname());
					} else if (readfile.isdirectory()) {
						readallfile(filelist[i].getpath());
					}
				}
			}
		} catch (filenotfoundexception e) {
			system.out.println("readfile()  exception:" + e.getmessage());
		}
		return true;
	}

	/**
	 * 删除某个文件夹下的所有文件夹和文件
	 * @param delpath
	 * @return
	 * @throws filenotfoundexception
	 * @throws ioexception
	 */
	public static boolean deletefile(string delpath)
			throws filenotfoundexception, ioexception {
		try {
			file file = new file(delpath);
			if (!file.isdirectory()) {
				system.out.println("1");
				file.delete();
			} else if (file.isdirectory()) {
				system.out.println("2");
				file[] filelist = file.listfiles();
				for (int i = 0; i < filelist.length; i++) {
					file delfile = filelist[i];
					if (!delfile.isdirectory()) {
						system.out.println("相对路径=" + delfile.getpath());
						system.out.println("绝对路径=" + delfile.getabsolutepath());
						system.out.println("文件全名=" + delfile.getname());
						delfile.delete();
						system.out.println("删除文件成功");
					} else if (delfile.isdirectory()) {
						deletefile(filelist[i].getpath());
					}
				}
				file.delete();
			}
		} catch (filenotfoundexception e) {
			system.out.println("deletefile()  exception:" + e.getmessage());
		}
		return true;
	}
}

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