生成6位随机字符
private static String radomString(){
String result="";
for(int i=0;i<6;i++){
int intVal=(int)(Math.random()*26+97);
result=result+(char)intVal;
}
return result;
}
生成6位随机数字
private static int radomInt(){
Random random = new Random();
int x = random.nextInt(899999);
int x = x+100000;
return x;
}
