(struts2验证码)MyUtils.java

package gssw.oa.util.ww;

 

import java.util.Random;

 

public abstract class MyUtils {

 

public static String[] Hobbies={"游戏","看书","爬山","逛街"};

//获得验证码信息

public static  String getRandString(){

//Ascii: 0-9(48-57) A-Z(65-90) a-z(97-122)

Random random=new Random();

int n=random.nextInt(3);

switch (n%3) {

case 1:

n=random.nextInt(25)+65;

break;

case 2:

n=random.nextInt(25)+97;

break;

default:

n=random.nextInt(9)+48;

break;

}

char c=(char)n;

return new String(new char[]{c});

}

}