commonmethods.java

前一次上传错了

/**
 * @(#)CommonMethods.java         2003/03/18
 *
 * Copyright (c) 2000-2003 Wuhan Tianyu Information Industry,Inc.
 * All rights reserved.
 */
package mybean;

import java.util.*;
import java.io.*;
import java.nio.*;
import java.nio.ByteBuffer;
import sun.misc.BASE64Encoder;
import sun.misc.BASE64Decoder;

public class CommonMethods
{



	/**
	 * 从指定文件fileName中读取key的值，若不存在返回空串""
	 */
public static  String readIniFile(String fileName, String key)
        {
          try
          {
            FileInputStream fs = new FileInputStream(fileName);
            Properties config = new Properties();
            config.load(fs);
            fs.close();
            String ret =config.getProperty(key);
            if(ret == null)
              return "";
            return ret;
            }
            catch(Exception ex)
            {
              return "";
            }
          }

public static int writeIniFile(String fileName, String key, String value)
{
            try
            {
              File file = new File(fileName);
              if (file.exists() == false)
                throw(new Exception("File not found."));
              int dataLen =(int)file.length();
              byte[] fileData = new byte[dataLen];
              FileInputStream inputStream = new FileInputStream(file);
              inputStream.read(fileData);
              inputStream.close();
              String fileString = new String(fileData);
              key = "\r\n" + key;
              int offset;
              offset = fileString.indexOf(key + " ");
              if (offset == -1)
              {
                offset = fileString.indexOf(key + "=");
                if (offset == -1) throw(new Exception("Key not found."));
              }
              int endPos;
              endPos = fileString.indexOf("\r\n", offset + 1);
              if (endPos == -1) throw(new Exception("Key not found."));
              String line = key + " = " + value;
              fileString = fileString.substring(0, offset) + line + fileString.substring(endPos);
              fileData = fileString.getBytes();
              FileOutputStream outputStream = new FileOutputStream(file);
              outputStream.write(fileData, 0, fileData.length);
              outputStream.close();
              return 0;
            }
            catch(Exception ex)
            {
              return -1;
            }
          }


public static String getConfigString(String strKey)
{
            try
            {
            String strFileName = (String)(System.getProperties().get("user.dir"))+ File.separatorChar + "ypc.ini";
            return (readIniFile(strFileName, strKey));
          }
          catch (Exception ex)
          {
            return "";
          }
        }

public static boolean setConfigString(String strKey,String value)
{
          try
          {
          String strFileName = (String)(System.getProperties().get("user.dir"))+ File.separatorChar + "ypc.ini";
          if(writeIniFile(strFileName,strKey,value) == 0)
            return true;
          else
            return false;
        }
        catch(Exception e)
        {
        return false;
        }
      }

public static void debugMessage(String msg)
{
        System.out.print("["+Thread.currentThread().getName()+"]\t[运行]" +msg+ "\r\n");
}

public static void main(String[] arg)
{

}
}