java对字符串进行数据转换

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//对提交的字符串进行非法字符的过滤
public String CheckReplace(String s) {
	try {
		if ((s == null) || (s.equals("")))
			return "";

		StringBuffer stringbuffer = new StringBuffer();
		for (int i = 0; i < s.length(); i++) {
			char c = s.charAt(i);
			switch (c) {
			case '"':
				stringbuffer.append("&quot;");
				break;
			case '\'':
				stringbuffer.append("&#039;");
				break;
			case '|':
				stringbuffer.append("");
				break;
			case '&':
				stringbuffer.append("&amp;");
				break;
			case '<':
				stringbuffer.append("&lt;");
				break;
			case '>':
				stringbuffer.append("&gt;");
				break;
			default:
				stringbuffer.append(c);
			}
		}

		return stringbuffer.toString().trim();
	} catch (Exception e) {
	}
	return "";
}

public String CheckDate(String[] s1, String[] s2) {
	boolean OK = true;
	StringBuffer sb = new StringBuffer();
	try {
		for (int i = 0; i < s1.length; i++) {
			if ((s1[i] == null) || (s1[i].equals("")) || (s1[i].equals(" "))) {
				sb.append("<li> [ " + s2[i] + " ] 不能为空!");
				OK = false;
			}
		}
		if (OK)
			return "Yes";
		return sb.toString().trim();
	} catch (Exception e) {
	}
	return "操作失败！";
}

public String getStrCN(String s) {
	return s;
}

public int StrToInt(String s) {
	try {
		return Integer.parseInt(CheckReplace(s));
	} catch (Exception e) {
	}
	return 0;
}

public boolean StringToBoolean(String s) {
	if ((s != null) && (s.equals("Yes")))
		return true;
	return false;
}