注意：首先要在E盘创建qaz.txt文本文件。然后执行代码写入。

public static void main(String[] args) {
SecurityCodeUtils scu = new SecurityCodeUtils();
String content="";
for (int i = 0; i < 10000; i++) {
content= content+scu.createBatchNo()+(int)((Math.random()*9+1)*1000)+"\r\n";
}
try {
// String content = "测试使用字符串";
File file = new File("E:/qaz.txt");
if(file.exists()){
FileWriter fw = new FileWriter(file,false);
BufferedWriter bw = new BufferedWriter(fw);
bw.write(content);
bw.close(); fw.close();
System.out.println("test1 done!");
}

} catch (Exception e) {
// TODO: handle exception
}


}