UUID生成唯一激活码

                // 使用UUID生成激活码
				UUID uuid = UUID.randomUUID();
				String activeCode = uuid.toString().replace("-", "");

	                // 注册成功,则发送邮件,让用户激活
					String emailMsg = "<p>恭喜您注册成功,请点击下面的连接进行激活账户</p>" + 
					"<p><a href='http://localhost:8099/IGeekShop/active?activeCode="
							+ activeCode + "'>" + 
					"http://localhost:8099/IGeekShop/user?method=acitve&activeCode=" + 
                     activeCode + "</a></p>";

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转载自blog.csdn.net/qq_15204179/article/details/82594048