package com.core;

public class ChStr {
	public static String toChinese(String strvalue) {
		try {
			if (strvalue == null) {										//當變量strvalue為null時
				strvalue="";											//將變量strvalue賦值為空
			} else {
				strvalue = new String(strvalue.getBytes("ISO8859_1"), "GBK");	//將字符串轉換為GBK編碼
				strvalue = strvalue.trim();								//去除字符串的首尾空格
			}
		} catch (Exception e) {
			strvalue="";												//將變量strvalue賦值為空
		}
		return strvalue;												//返回轉換后的輸入變量strvalue
	}

	// 處理字符串中的空值
	public static final String nullToString(String v, String toV) {
	    if (v == null || "".equals(v)) {			//當輸入變量v為空時
	        v = toV;						//將輸入變量v賦值為輸入變量toV
	    }
	    return v;							//返回轉換后的輸入變量v
	}
	//過濾危險字符
	public static final String filterStr(String str){
		str=str.replaceAll(";","");
		str=str.replaceAll("&","&");
		str=str.replaceAll("<","&lt;");
		str=str.replaceAll(">","&gt;");
		str=str.replaceAll("'","");
		str=str.replaceAll("--"," ");
		str=str.replaceAll("/","");
		str=str.replaceAll("%","");
		return str;
	}
}