java随机生成字符串(字符随机生成类 生成随机字符组合)
java随机生成字符串(字符随机生成类 生成随机字符组合)
发布时间:2016-12-28 来源:查字典编辑
摘要:复制代码代码如下:packagecom.phyl.password;importjava.util.ArrayList;importjava...

复制代码 代码如下:

package com.phyl.password;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Random;

/**

* 字符随机生成类

* @author ASUS

*

*/

public class PassWord {

/**

* 密码类型枚举

* @author ASUS

*/

public static enum TYPE {

/**

* 字符型

*/

LETTER,

/**

* 大写字符型

*/

CAPITAL,

/**

* 数字型

*/

NUMBER,

/**

* 符号型

*/

SIGN,

/**

* 大+小字符 型

*/

LETTER_CAPITAL,

/**

* 小字符+数字 型

*/

LETTER_NUMBER,

/**

* 大+小字符+数字 型

*/

LETTER_CAPITAL_NUMBER,

/**

* 大+小字符+数字+符号 型

*/

LETTER_CAPITAL_NUMBER_SIGN

}

private static String[] lowercase = {

"a","b","c","d","e","f","g","h","i","j","k",

"l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"};

private static String[] capital = {

"A","B","C","D","E","F","G","H","I","J","K",

"L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"};

private static String[]number = {

"1","2","3","4","5","6","7","8","9","0"};

private static String[] sign = {

"~","!","@","#","$","%","^","&","*","(",")","_","+","`","-","=",

"{","}","|",":",""","<",">","?",

"[","]","",";","'",",",".","/"};

/**

* 静态随机数

*/

private static Random random = new Random();

public static void main(String[] args) {

System.out.println(PassWord.getRandom(24, PassWord.TYPE.CAPITAL));

}

/**

* 获取随机组合码

* @param num 位数

* @param type 类型

* @type

* <br>字符型 LETTER,

* <br>大写字符型 CAPITAL,

* <br>数字型 NUMBER,

* <br>符号型 SIGN,

* <br>大+小字符型 LETTER_CAPITAL,

* <br>小字符+数字 型 LETTER_NUMBER,

* <br>大+小字符+数字 型 LETTER_CAPITAL_NUMBER,

* <br>大+小字符+数字+符号 型 LETTER_CAPITAL_NUMBER_SIGN

*/

public static String getRandom(int num,TYPE type){

ArrayList<String> temp = new ArrayList<String>();

StringBuffer code = new StringBuffer();

if(type == TYPE.LETTER){

temp.addAll(Arrays.asList(lowercase));

}else if(type == TYPE.CAPITAL){

temp.addAll(Arrays.asList(capital));

}else if(type == TYPE.NUMBER){

temp.addAll(Arrays.asList(number));

}else if(type == TYPE.SIGN){

temp.addAll(Arrays.asList(sign));

}else if(type == TYPE.LETTER_CAPITAL){

temp.addAll(Arrays.asList(lowercase));

temp.addAll(Arrays.asList(capital));

}else if(type == TYPE.LETTER_NUMBER){

temp.addAll(Arrays.asList(lowercase));

temp.addAll(Arrays.asList(number));

}else if(type == TYPE.LETTER_CAPITAL_NUMBER){

temp.addAll(Arrays.asList(lowercase));

temp.addAll(Arrays.asList(capital));

temp.addAll(Arrays.asList(number));

}else if(type == TYPE.LETTER_CAPITAL_NUMBER_SIGN){

temp.addAll(Arrays.asList(lowercase));

temp.addAll(Arrays.asList(capital));

temp.addAll(Arrays.asList(number));

temp.addAll(Arrays.asList(sign));

}

for (int i = 0; i < num; i++) {

code.append(temp.get(random.nextInt(temp.size())));

}

return code.toString();

}

}

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