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1、http://livevalidation.com/download下载livevalidation_standalone.js
2、目录结构：
WebRoot
javascript
livevalidation_standalone.js
registerform_validation.js
styles
validation.css
user
regist.jsp
3、jsp页面
<html ...
select * from tb_eleclog where uname='jimmy' order by time DESC limit 0, 1
等价于
select * from tb_eleclog where uname='jimmy' order by time DESC limit 1
另转载Select Top在七种数据库中的使用方法（http://www.52lamp.com.cn/detail/981.html）
1. Oracle数据库 SELECT * FROM TABLE1 WHERE ROWNUM<=N
2. Infomix数据库 ...
public class CmdLineArgsTest {
private static void usage() {
System.out.println("CmdLineArgsTest [-h <env directory>]");
System.out.println(" [-i <inventory file>] [-v <vendors file>]");
System.exit(-1);
}
/* 命令行参数解析 * ...