[导入]java escape unescape

package opensns.util;
public class EscapeUnescape {

public static String escape(String src) {
   int i;
   char j;
   StringBuffer tmp = new StringBuffer();
   tmp.ensureCapacity(src.length() * 6);
   for (i = 0; i < src.length(); i++) {
    j = src.charAt(i);
    if (Character.isDigit(j) || Character.isLowerCase(j)
      || Character.is