utilbean.java

用jsp与sql编写的notebook。

package book;
import java.util.*;
import book.MD5; //MD5加密算法的包

public class UtilBean
{
 //字符串中文问题
 public String getStr(String s)
 {
    try
    {
       byte[] a = s.getBytes("ISO-8859-1");
       return new String(a, "gb2312");
    }
    catch(Exception exception)
    {
       return s;
    }
 }
 //MD5加密字符串
  public String makeHacker(String s){
	MD5 m = new MD5();
	return m.getMD5ofStr(s);
  }	
  //字符串替换函数
  public String replace(String strSource,String strFrom,String strTo){
	String strDest = "";
	int intFromLen = strFrom.length();
	int intPos;

	while((intPos=strSource.indexOf(strFrom))!=-1){
	strDest = strDest + strSource.substring(0,intPos);
	strDest = strDest + strTo;
	strSource = strSource.substring(intPos+intFromLen);
	}
	strDest = strDest + strSource;
	return strDest;
  }	
  //去处Html标记
  public String Tags(String input)
  {
  if (input==null||input.length()==0)
  {
	return input;
  }
  StringBuffer buf=new StringBuffer(input.length()+6);
  char ch=' ';
  for (int i=0;i<input.length() ;i++ )
  {
	ch=input.charAt(i);
	switch (ch)
	{
	case '>':buf.append("&gt;");break;
	case '<':buf.append("&lt;");break;
	case '\n':buf.append("<br>");break;
	case ' ':buf.append("&nbsp;");break;
	case '\'':buf.append("''");break;
	default :buf.append(ch);break;
	}
  }
  return buf.toString();
  }
 }