使用RabbitMQ死信实现延迟消息

package com.book.rabbitmq.utils; import java.nio.charset.Charset; import java.util.Random; import java.util.regex.Matcher; import java.util.regex.Pattern; import com.alibaba.fastjson.JSON; import com.google.common.base.Charsets; /** * * @author victor * @desc　字符串工具类 */ public final class StringUtils { public static final String EMPTY = ""; private static final Pattern REG_CHINESE_CHARS = Pattern.compile("[\\u4e00-\\u9fa5·]+"); private static final Pattern REG_VALIDATE_IDCARD = Pattern.compile("(\\d{14}[0-9a-zA-Z])|(\\d{17}[0-9a-zA-Z])"); private static final Pattern REG_VALIDATE_MOBILE = Pattern.compile("^(13[0-9]|15[012356789]|18[0-9]|14[57]|17[0-9])[0-9]{8}$"); private static final Pattern REG_VALIDATE_ZIPCODE = Pattern.compile("[1-9]\\d{5}(?!\\d)"); private static final Pattern REG_VALIDATE_SKU_CODE = Pattern.compile("[0-9]*"); private static final Pattern REG_VALIDATE_DOUBLE_CODE = Pattern.compile("^[1-9]\\d*\\.\\d*|0\\.\\d*[1-9]\\d*|0?\\.0+|0$"); /** * 判断是否为null 或者 "" * @param str 需要判断的字符串 * @return */ public static boolean isNullOrEmpty(String str){ if(str == null) { return true; } if(str.trim().length() == 0){ return true; } return false; } /** * 判断是否为空白字符串 "" * @param str * @return */ public static boolean isBlank(String str){ return org.apache.commons.lang.StringUtils.isBlank(str); } /** * 判断是否为json格式 * @param str 需要校验的字符串 * @return */ public static boolean isJson(String str){ try { JSON.parseObject(str); } catch (Exception e) { return false; } return true; } /** * * @param length * @return * @desc 生成随机字符串 包含字符数字 */ public static String generateCharAndNumrRamdom (int length){ StringBuffer buffer = new StringBuffer(); Random random = new Random(); for (int i = 0; i < length; i++) { String charOrNum = random.nextInt(2) % 2 == 0 ? "char" : "num"; if ("char".equalsIgnoreCase(charOrNum)) { int choice = random.nextInt(2) % 2 == 0 ? 65 : 97; buffer.append((char) (choice + random.nextInt(26))); } else if ("num".equalsIgnoreCase(charOrNum)) { buffer.append(String.valueOf(random.nextInt(10))); } } return buffer.toString(); } /** * 首字母大写 * @param str 字符串 * @return */ public static String toUpperFirstChar(String str) { char[] chars = str.toCharArray(); chars[0] = Character.toUpperCase(chars[0]); return new String(chars); } /** * 首字母小写 * @param str * @return */ public static String toLowerFirstChar(String str) { char[] chars = str.toCharArray(); chars[0] = Character.toLowerCase(chars[0]); return new String(chars); } /** * 是否为汉字串 * * @param str 字符串 * @return bool */ public static boolean isChineseChars(String str) { if (isNullOrEmpty(str)) { return false; } return REG_CHINESE_CHARS.matcher(str).matches(); } /** * 判断是否为身份证 * @param str 字符串 * @return */ public static boolean isIdcardNo(String str) { if (isNullOrEmpty(str)) return false; return REG_VALIDATE_IDCARD.matcher(str).matches(); } /** * 判断是否为手机号码 * @param str * @return */ public static boolean isMobileNo(String str) { if (isNullOrEmpty(str)) return false; return REG_VALIDATE_MOBILE.matcher(str).matches(); } /** * 判断是否为邮编 * @param str * @return */ public static boolean isZipCode(String str) { if (isNullOrEmpty(str)) return false; return REG_VALIDATE_ZIPCODE.matcher(str).matches(); } /** * 转换为UF-8编码 * @param source 源字符串 * @param charsetIn 源编码格式 * @return */ public static String toUTF8(String source, Charset charsetIn) { return new String(source.getBytes(charsetIn), Charsets.UTF_8); } /** * 是否为数字 * @param str 源字符串 * @return */ public static boolean isNumber(String str) { if (isNullOrEmpty(str)) { return false; } return REG_VALIDATE_SKU_CODE.matcher(str).matches(); } /** * 是否为dubbo * @param str 源字符串 * @return */ public static boolean isDouble(String str){ if (isNullOrEmpty(str)) { return false; } return REG_VALIDATE_DOUBLE_CODE.matcher(str).matches(); } /** * 是否为数字 * @param str * @return */ public static boolean isAllNumber(String str) { return isNumber(str) || isDouble(str); } /** * 替换空格为指定字符 * @param str * @param separator * @return */ public static String replaceSpace(String str,String separator){ String regEx = "[' ']+"; // 一个或多个空格 Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(str); return m.replaceAll(separator).trim(); } /** * 判断是否为中文 根据Unicode编码判断 * @param strName * @return */ public static boolean isChinese(String strName) { char[] ch = strName.toCharArray(); for (int i = 0; i < ch.length; i++) { char c = ch[i]; if (!isChinese(c)) { return false; } } return true; } public static boolean isChinese(char c) { Character.UnicodeBlock ub = Character.UnicodeBlock.of(c); if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B) { return true; } return false; } /** * 判断是否包含中文 * @param strName * @return */ public static boolean isHaveChinese(String strName) { char[] ch = strName.toCharArray(); for (int i = 0; i < ch.length; i++) { char c = ch[i]; if (isChinese(c)) { return true; } } return false; } /** * * @param obj 对象 * @return * @desc 判断对象是否为空 */ public static boolean isNullOrEmpty(Object obj){ if(obj == null ){ return true; } return isNullOrEmpty(obj.toString()); } }