添加商户交易号生成方法

src/main/java/com/jpsoft/epay/modules/common/utils/StringUtils.java

@@ -0,0 +1,145 @@
+package com.jpsoft.epay.modules.common.utils;
+
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.text.MessageFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+import java.util.Random;
+import java.util.UUID;
+
+/**
+ * 字符串工具类，继承lang3字符串工具类
+ * @author L.com
+ */
+public final class StringUtils extends org.apache.commons.lang3.StringUtils {
+
+	public static String encode(String str){
+		String encode=null;
+		try {
+			encode = URLEncoder.encode(str, "UTF-8");
+		} catch (UnsupportedEncodingException e) {
+			e.printStackTrace();
+		}
+		return encode;
+	}
+	
+	/**
+	 * 获取UUID，去掉`-`的
+	 * @return {String}
+	 * 
+	 */
+	public static String generateStr () {
+		return UUID.randomUUID().toString().replace("-", "");
+	}
+
+	
+	/**
+	 * 要求外部订单号必须唯一。
+	 * @return {String}
+	 */
+	public  static String getOutTradeNo() {
+		SimpleDateFormat format = new SimpleDateFormat("MMddHHmmss", Locale.getDefault());
+		Date date = new Date();
+		String key = format.format(date);
+		key = key + System.currentTimeMillis();
+		key = key.substring(0, 15);
+		return key;
+	}
+
+	/**
+	 * 字符串格式化
+	 * 
+	 * use: format("my name is {0}, and i like {1}!", "L.cm", "java")
+	 * 
+	 * int long use {0,number,#}
+	 * 
+	 * @param s 
+	 * @param args
+	 * @return {String}转换后的字符串
+	 */
+	public static String format(String s, Object... args) {
+		return MessageFormat.format(s, args);
+	}
+	
+	/**
+	 * 替换某个字符
+	 * @param str
+	 * @param regex
+	 * @param args
+	 * @return {String}
+	 */
+	public static String replace(String str,String regex,String... args){
+		int length = args.length;
+		for (int i = 0; i < length; i++) {
+			str=str.replaceFirst(regex, args[i]);
+		}
+		return str;
+	}
+
+	/**
+	 * 清理字符串，清理出某些不可见字符
+	 * @param txt
+	 * @return {String}
+	 */
+	public static String cleanChars(String txt) {
+		return txt.replaceAll("[ 　	`·•�
\\f\\t\\v]", "");
+	}
+
+	/**
+	 *  随机字符串
+	 */
+	private static final String INT_TEMP = "0123456789";
+	private static final String STR_TEMP = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+	private static final String ALL_TEMP = INT_TEMP + STR_TEMP;
+
+	private static final Random RANDOM = new Random();
+
+	/**
+	 * 生成的随机数类型
+	 */
+	public enum RandomType {
+		/**
+		 * 整数
+		 */
+		INT,
+		/**
+		 * 字符串
+		 */
+		STRING,
+		/**
+		 * 所有类型
+		 */
+		ALL
+	}
+
+	/**
+	 * 随机数生成
+	 * @param count
+	 * @return {String}
+	 */
+	public static String random(int count, RandomType randomType) {
+		if (count == 0) {
+			return "";
+		}
+		if (count < 0) {
+			throw new IllegalArgumentException("Requested random string length " + count + " is less than 0.");
+		}
+		char[] buffer = new char[count];
+		for (int i = 0; i < count; i++) {
+			if (randomType.equals(RandomType.INT)) {
+				buffer[i] = INT_TEMP.charAt(RANDOM.nextInt(INT_TEMP.length()));
+			} else if (randomType.equals(RandomType.STRING)) {
+				buffer[i] = STR_TEMP.charAt(RANDOM.nextInt(STR_TEMP.length()));
+			}else {
+				buffer[i] = ALL_TEMP.charAt(RANDOM.nextInt(ALL_TEMP.length()));
+			}
+		}
+		return new String(buffer);
+	}
+	
+	public static void main(String[] args) {
+		System.out.println(random(32, RandomType.ALL));
+	}
+}