com.riversoft.weixin.common.util.URLEncoder Maven / Gradle / Ivy
package com.riversoft.weixin.common.util;
import java.io.UnsupportedEncodingException;
import java.util.Locale;
/**
* Created by exizhai on 10/5/2015.
*/
public class URLEncoder {
public static String encode(final String s) {
if (s == null) {
return "";
}
final StringBuilder sb = new StringBuilder();
try {
for (int i = 0; i < s.length(); i++) {
final char c = s.charAt(i);
if (((c >= 'A') && (c <= 'Z')) || ((c >= 'a') && (c <= 'z')) ||
((c >= '0') && (c <= '9')) ||
(c == '-') || (c == '.') || (c == '_') || (c == '~')) {
sb.append(c);
} else {
final byte[] bytes = ("" + c).getBytes("UTF-8");
for (byte b : bytes) {
sb.append('%');
int upper = (((int) b) >> 4) & 0xf;
sb.append(Integer.toHexString(upper).toUpperCase(Locale.US));
int lower = ((int) b) & 0xf;
sb.append(Integer.toHexString(lower).toUpperCase(Locale.US));
}
}
}
return sb.toString();
} catch (UnsupportedEncodingException uee) {
throw new RuntimeException("UTF-8 unsupported!?", uee);
}
}
}