import java.io.ByteArrayOutputStream;
import sun.misc.BASE64Decoder;
public class UrlUtils {
public final static String urlEncode(String s) {
try {
return notEmpty(s) ? java.net.URLEncoder.encode(s, "utf-8") : null;
} catch (Exception e) {
return null;
}
}
public static String urlDecode(String s) {
try {
return notEmpty(s) ? java.net.URLDecoder.decode(s, "utf-8") : null;
} catch (Exception e) {
return null;
}
}
public static Boolean notEmpty(String s) {
return s==null||s.trim().length()<1 ? false : true;
}
// 将 s 进行 BASE64 编码
public static String getBASE64(String s) {
if (s == null)
return null;
return (new sun.misc.BASE64Encoder()).encode(s.getBytes());
}
// 将 BASE64 编码的字符串 s 进行解码
public static String getFromBASE64(String s) {
if (s == null)
return null;
BASE64Decoder decoder = new BASE64Decoder();
try {
byte[] b = decoder.decodeBuffer(s);
return new String(b);
} catch (Exception e) {
return null;
}
}
private static String hexString = "0123456789ABCDEF";
public static String encode(String str) {
// 根据默认编码获取字节数组
byte[] bytes = str.getBytes();
StringBuilder sb = new StringBuilder(bytes.length * 2);
// 将字节数组中每个字节拆解成2位16进制整数
for (int i = 0; i < bytes.length; i++) {
sb.append(hexString.charAt((bytes[i] & 0xf0) >> 4));
sb.append(hexString.charAt((bytes[i] & 0x0f) >> 0));
}
return sb.toString();
}
public static String decode(String bytes) {
ByteArrayOutputStream baos = new ByteArrayOutputStream(
bytes.length() / 2);
// 将每2位16进制整数组装成一个字节
for (int i = 0; i < bytes.length(); i += 2)
baos.write((hexString.indexOf(bytes.charAt(i)) << 4 | hexString
.indexOf(bytes.charAt(i + 1))));
return new String(baos.toByteArray());
}
public static void main(String[] args) throws Exception {
String stest = "http://localhost:8026/loginServlet.do?username='张三'&userpass='123'";
System.out.println(urlEncode(stest));
System.out.println(urlDecode(stest));
System.out.println(UrlUtils.encode("中"));
System.out.println(UrlUtils.decode("D6D0"));
}
}
