filetool.java

JAVA开发的邮件系统

package net.meybo.util;

import java.io.*;
import java.util.*;

/**
 * 主要是对文件的基本操作
 * <p>Title: </p>
 * <p>Description: file类操作</p>
 * <p>Copyright: Copyright (c) 2006</p>
 * <p>Company: 脉博软件</p>
 * @author 阚吉彬
 * @version 1.0
 */
public class FileTool {
  public FileTool() {
  }

  /**
   * 读文件
   * @param fileName:文件名，可以带路径
   * @return
   */
  public static String read(String fileName) {
     File file=new File(fileName);
     FileInputStream in=null;
     String fileContent="";
     try{
       int size=(int)file.length();
       in=new FileInputStream(file);
       byte[] b=new byte[size];
       in.read(b);

       fileContent=new String(new String(b,"GB2312").getBytes("GB2312"));
//       System.out.println("file"+fileContent);
     }catch(Exception e){
       fileContent = "";
       e.printStackTrace();
     } finally {
       if(in != null){
        try {
          in.close();
        }
        catch (IOException ex) {
        }
       }
     }

    return fileContent;
  }

  /**
   * 写文件
   * @param fileName:文件各，可以带路径
   * @param value:文件内容
   */
  public static void writeFile(String fileName, String value){
    FileOutputStream outfile = null;
    OutputStreamWriter out=null;  
    try{
      outfile = new FileOutputStream(fileName);
      out=new OutputStreamWriter(outfile);
      out.write(value);
    }catch(Exception e){
      e.printStackTrace();
    }finally {
      try {
        if(out != null){
          out.close();
        }
      } catch (IOException ex1) {
      }
      if(outfile != null){
        try {
          outfile.close();
        }
        catch (IOException ex) {
        }
      }
    }

  }

  /**
   * 生成配置文件
   * @param cfgHT:新的配置文件内容
   */
  public static void writeConfig(Hashtable cfgHT){
    StringBuffer fileContentSB = new StringBuffer();
    Enumeration cfgEN = cfgHT.keys();
    while (cfgEN.hasMoreElements()) {
      String key = (String)cfgEN.nextElement();
      fileContentSB.append(key+"="+cfgHT.get(key)+"\r\n");
    }

    writeFile("xmlconfig.ini", fileContentSB.toString());
  }

  /**
   * 记录日志
   * @param content:日志内容
   */
  public static void writeLog(String content){

    StringBuffer tmpSB = new StringBuffer();
    tmpSB.append(read("log/log.txt"));//读取原来
    tmpSB.append("\r\n"+content);

    writeFile("log/log.txt", tmpSB.toString());
  }
  public static boolean MoveFile(String SourcePath, String targetPath) {
		boolean MoveFile = false;
		String sPath, tPath;
		sPath = SourcePath.trim();
		tPath = targetPath.trim();
		java.io.File f = new java.io.File(sPath);
		try {
			if (f.exists()) {
				java.io.File file = new java.io.File(tPath);
				MoveFile = f.renameTo(file);
			}
		} catch (Exception ex) {
			ex.printStackTrace();
		}
		return MoveFile;
	}
public static boolean delDir(String dirPath)
{
	File f=new File(dirPath);
	if(f.exists())
	{
		if(f.isDirectory())
		{
			String[] dirs=f.list();
			if(dirs!=null){
			for(int i=0;i<dirs.length;i++)
			{
				File f1=new File(dirPath+"/"+dirs[i]);			
				if(f1.isDirectory()) delDir(f1.getAbsolutePath());
				else 
				{
					f1.delete();					
				}
			}			
			}
		}
		f.delete();
		return true;		
	}
	else 
		return false;
	
}
  public static void main(String[] args) {
//    FileTool untitled11 = new FileTool();
//    Hashtable cfgHT = new Hashtable();
//    cfgHT.put("aaa", "12345");
//    cfgHT.put("vvv", "3r464");
//    writeConfig(cfgHT);
//    FileTool.read("xmlconfig.ini");
//    FileTool.writeFile("xmlconfig.ini","");
  }

}