public static String toChinese(String strvalue) {

try {

if (strvalue == null) {

return "";

} else {

strvalue = new String(strvalue.getBytes("ISO8859_1"), "GBK");

return strvalue;

}

} catch (Exception e) {

return "";

}

}

public static String StringtoSql(String str) {

str = nullToString(str, "");

try {

str = str.trim().replace('\'', (char) 1);

} catch (Exception e) {

return "";

}

return str;

}

public static String SqltoString(String str) {

str = nullToString(str, "");

try {

str = str.replace( (char) 1, '\'').trim();

} catch (Exception e) {

return "";

}

return str;

}

public static String toUnicode(String strvalue) {

try {

if (strvalue == null) {

return null;

} else {

strvalue = new String(strvalue.getBytes("GBK"), "ISO8859_1");

return strvalue;

}

} catch (Exception e) {

return "";

}

}

public static boolean compareNowTime(String date) {

SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");

Date d = null;

try {

d = format.parse(date); //返回一个Date类的实例

} catch (ParseException ex) {

}

if (System.currentTimeMillis() - 259200000 < d.getTime()) {

return true;

}

return false;

}

public static boolean isID(String str) {

if (str != null && str.length() > 0) {

if (str.charAt(0) < 57 && str.charAt(0) > 48) {

return false;

}

for (int i = 0; i < str.length(); i++) {

if (str.charAt(i) < 65 && str.charAt(i) > 57 || str.charAt(i) > 90

&& str.charAt(i) < 97 && str.charAt(i) != 95 || str.charAt(i) > 122 ||

str.charAt(i) < 48) {

return false;

}

}

return true;

}

return false;

}

public static final String escapeHTMLTags(String input) {

if (input == null || input.length() == 0) {

return input;

}

StringBuffer buf = new StringBuffer(input.length());

char ch = ' ';

for (int i = 0; i < input.length(); i++) {

ch = input.charAt(i);

if (ch == '<') {

buf.append("&lt;");

} else if (ch == '>') {

buf.append("&gt;");

} else {

buf.append(ch);

}

}

String str=buf.toString();

str=str.replace(" ","&nbsp;");

str=str.replace("\r\n","<br>");

return str;

}

public static final String nullToString(String v, String toV) {

if (v == null) {

v = toV;

}

return v;

}

public static final String SqlToLink(String str) {

str = StringUtils.nullToString(str, "");

if ("".equals(str)) {

str = " LIKE '%' ";

} else {

str = (" LIKE '%" + str + "%' ");

}

return str;

}

public static final String SqlToLink(int i) {

String str = "";

try {

str = new Integer(i).toString();

} catch (Exception e) {}

if (i == -1) {

str = "";

}

return StringUtils.SqlToLink(str);

}