com.aliyuncs.utils.ParameterHelper Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package com.aliyuncs.utils;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.SimpleTimeZone;
import java.util.UUID;
public class ParameterHelper {
private final static String TIME_ZONE = "GMT";
private final static String FORMAT_ISO8601 = "yyyy-MM-dd'T'HH:mm:ss'Z'";
private final static String FORMAT_RFC2616 = "EEE, dd MMM yyyy HH:mm:ss zzz";
public ParameterHelper() {
}
public static String getUniqueNonce() {
UUID uuid = UUID.randomUUID();
return uuid.toString();
}
public static String getISO8601Time(Date date) {
Date nowDate = date;
if (null == date){
nowDate = new Date();
}
SimpleDateFormat df = new SimpleDateFormat(FORMAT_ISO8601);
df.setTimeZone(new SimpleTimeZone(0, TIME_ZONE));
return df.format(nowDate);
}
public static String getRFC2616Date(Date date) {
Date nowDate = date;
if (null == date){
nowDate = new Date();
}
SimpleDateFormat df = new SimpleDateFormat(FORMAT_RFC2616, Locale.ENGLISH);
df.setTimeZone(new SimpleTimeZone(0, TIME_ZONE));
return df.format(nowDate);
}
public static Date parse(String strDate) throws ParseException {
if (null == strDate || "".equals(strDate)){
return null;
}
try {
return parseISO8601(strDate);
} catch (ParseException exp) {
return parseRFC2616(strDate);
}
}
public static Date parseISO8601(String strDate) throws ParseException {
if (null == strDate || "".equals(strDate)){
return null;
}
SimpleDateFormat df = new SimpleDateFormat(FORMAT_ISO8601);
df.setTimeZone(new SimpleTimeZone(0, TIME_ZONE));
return df.parse(strDate);
}
public static Date parseRFC2616(String strDate) throws ParseException {
if (null == strDate || "".equals(strDate) || strDate.length() != FORMAT_RFC2616.length()){
return null;
}
SimpleDateFormat df = new SimpleDateFormat(FORMAT_RFC2616, Locale.ENGLISH);
df.setTimeZone(new SimpleTimeZone(0, TIME_ZONE));
return df.parse(strDate);
}
public static String md5Sum(byte[] buff){
try {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] messageDigest = md.digest(buff);
return Base64Helper.encode(messageDigest);
} catch (Exception e) {
}
return null;
}
}