根据用户输入的名字随机推荐用户名

不是copy就能用的&＃xff0c;要理解逻辑

逻辑

1. 根据用户名字判断&＃xff0c;
   如果名字长度是0&＃xff0c;或者纯数字的名字&＃xff0c;或者包含手机号&＃xff0c;或者名字太长&＃xff0c;则使用词组&＃xff08;写死的&＃xff09;&＃xff0c;来作为组装前的 &＃61;&＃61;“原型” &＃61;&＃61;。
   否则使用用户名自己的名字作为原型进行拼接推荐
2. 如果长度小于6&＃xff0c;先用字母补齐至6&＃xff0c;再用10位数的数字做一个随机长度的数字&＃xff08;避免了数字长度大于10&＃xff0c;导致可能出现手机号&＃xff09;
3. 如果长度大于等于6&＃xff0c;则随机用字母&＃43;数字进行拼接。

前提&＃xff1a;(可自己设置好)
传进来的名字是合法的
假设用户名长度是6个字节-16个字节

注意
StringUtil.getCharLength(name)&＃xff0c;这个是查字符串的字节数的
isLocalExistName(recommendName)&＃xff0c;这个是查询数据库里是否有该名字的方法

scala版本

//假设这个是某某接口&＃64;RequestMapping(value &＃61; Array("/recommendUserName"), method &＃61; Array(RequestMethod.POST))&＃64;ResponseBodydef recommendUserName(req: HttpServletRequest,response: HttpServletResponse,&＃64;RequestParam(defaultValue &＃61; "", required &＃61; false, value &＃61; "userName") userName: String,&＃64;RequestParam(defaultValue &＃61; "", required &＃61; false, value &＃61; "mobile") mobile: String): JsonResult &＃61; {....val recommendName &＃61; userNameRecommendService.getRecommendUserName(userName)....
}


def getRecommendUserName(userName: String): JavaList[String] &＃61; {val name &＃61; getInitialName(userName) var recommendName:String &＃61; ""//获取名字长度val nameLen &＃61; StringUtil.getCharLength(name)if(nameLen<6){do{//先拿字母补齐至最短字符recommendName&＃61;name&＃43;getRandomStrABC(6-nameLen)recommendName&＃61;recommendName&＃43;getRandomStrNumber(10)}while(!isLocalExistName(recommendName)) //判断名字是否已经被注册}else{do{val a&＃61;new Random().nextInt(16-nameLen)val b&＃61;16-nameLen-a//利用字母和数字来合成recommendName&＃61;name&＃43;getRandomStrABC(a)&＃43;getRandomStrNumber(b)}while(!isLocalExistName(recommendName)) //判断名字是否已经被注册}
}


当小于6的时候的效果

当大于6的时候的效果

//随机获取小写字母的字符private def getRandomStrABC(count: Int): String &＃61; {var str &＃61; ""for (i <- 1 to count) {val c &＃61; &＃39;a&＃39; &＃43; (new Random()).nextInt(26)str &＃61; str &＃43; c.toChar}str}


//随机获取不同长度的数字字符private def getRandomStrNumber(count: Int): String &＃61; {var str &＃61; ""val c &＃61;new Random().nextInt(count)for(i<-1 to c){val x &＃61; (new Random()).nextInt(10)str &＃61; str &＃43; x}str}


//根据用户名在输入框中输入的名字&＃xff08;并不是当前变化着的用户名&＃xff09;&＃xff0c;随机生成用户名val namePreSet&＃61;Array("童姥","拖把","王子","旺财","旺仔","蚊子","乌龟","乌鸦","西瓜","咸菜","象牙","小白","小呆","小狗","小乖","小米","小七","小强","小熊","小猪","猩猩","熊猫","雪糕","雪郎","秧李","野兔","淫魔","油头","仔仔","战童","猪头","竹竿","竹子","叶子","糖糖","小蜜蜂","小燕子","小屁孩","大嘴","大虫","石头","稻草人","拼命郎")def getInitialName(userName:String): String &＃61;{//这个是获取字节数目val length &＃61; StringUtil.getCharLength(userName)val roleId&＃61;math.abs((new Random()).nextInt % (namePreSet.length))var name &＃61; ""//去掉数字后的名字&＃xff0c;如果长度为0&＃xff0c;则说明名字为纯数字val number &＃61; userName.replaceAll("\\d&＃43;","")//如果名字长度是0&＃xff0c;或者纯数字的名字&＃xff0c;或者包含手机号&＃xff0c;或者名字太长if(number.length&＃61;&＃61;0||isExistPhone(userName)||length>16||length&＃61;&＃61;0){//选择采用数组里的名字name &＃61; namePreSet.apply(preId)}else{name&＃61;userName}name}


//检验是否存在手机号private def isExistPhone(name:String): Boolean &＃61;{val pattern &＃61; new Regex("[1]([3-9])[0-9]{9}")val number&＃61;(pattern findAllIn name).mkString("") // 找出用户名中的手机号val p &＃61; Pattern.compile("^[1]([3-9])[0-9]{9}$")val m &＃61; p.matcher(number)if(m.matches()){return true}return false}