Edzy_Java

////////////////////////////////////////////////////////////////////////////////////////////////////////////
//FilterBean.java
public class FilterBean{
?
?public FilterBean(){}??
?
?public /*static*/ String filter(String input)/////////////////////////進行HTML過濾??
?{????
??if(!hasSpecialChars(input)){???????
???return input;????
??}????
??StringBuffer filtered =new StringBuffer(input.length());????
??char c;????
??for(int i=0; i<=input.length()-1; i++){???????
???c=input.charAt(i);???????
???switch(c)???????
???{???????????
???case '<':filtered.append("&lt;"); break;???????????
???case '>':filtered.append("&gt;"); break;???????????
???//case '"':filtered.append("&uot;"); break;???????????
???//case '&':filtered.append("&amp;"); break;???????????
???case ' ':filtered.append("&nbsp;"); break;???????????
???case '\n':filtered.append("<br>"); break;???????????
???default: filtered.append(c);
???}?????
??}??????
??return (filtered.toString());???
?}??
?
?public static boolean hasSpecialChars(String input){????
??boolean flag=false;

??if((input!=null)&&(input.length()>0)){??????
???char c;??????
???for(int i=0; i<=input.length()-1; i++){????????
????c=input.charAt(i);????????
????switch(c)????????
????{??????????
????case '>': flag=true; break;??????????
????case '<': flag=true; break;??????????
????//case '"': flag=true; break;??????????
????//case '&': flag=true; break;??????????
????case ' ': flag=true; break;??????????
????case '\n': flag=true; break;????????
????}
???}????
??}????
??return flag;??
?}??
?
?public String trans(String chi)//統一字符??
?{??????
??String result = null;??????
??byte temp [];??????
??try{???????????
???temp=chi.getBytes("gb2312");???????????
???result = new String(temp);???????
??}???????
??catch(java.io.UnsupportedEncodingException e){????????????
???System.out.println (e.toString());???????
??}???????
??return result;??
?}??
?
?public String trans(Object chi)??
?{??????
??return trans(chi.toString());???
?}?
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////
//NullSolve.java
public class NullSolve {? //數據寫入數據庫之前，將未填寫的字段由字符串null改為空("")
?public String trim(String s){
??if(s==null||s.equalsIgnoreCase("null"))
???return null;
??else
???return s.trim();
?}
}