<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[just for skill]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/iteye_19068</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; iteye_19068]]></copyright><item><title><![CDATA[sftp取文件夹内所有内容]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/82488046</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/82488046</guid><author>iteye_19068</author><pubDate>Wed, 17 Apr 2013 17:55:07 +0800</pubDate><description><![CDATA[get -r 文件夹/

取文件夹内的所有文件及递归取子文件夹内容。]]></description><category></category></item><item><title><![CDATA[JVM Xmx 能够设置的最大值]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/82486376</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/82486376</guid><author>iteye_19068</author><pubDate>Tue, 09 Apr 2013 10:01:30 +0800</pubDate><description><![CDATA[可以设置的最大JVM内存和JVM版本以及操作系统版本有关，一般Windows下1200-1500M左右，Linux下最大能到2600M； 
具体可以使用命令 java -XmxXXXXM -version 来进行测试（如：java -Xmx1024M -version），然后逐渐的增大XXXX的值，如果执行正常就表示指定的内存大小可用，否则会打印错误信息。 

测试32位win、java 1...]]></description><category></category></item><item><title><![CDATA[about RCP]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/82102449</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/82102449</guid><author>iteye_19068</author><pubDate>Thu, 04 Aug 2011 15:30:39 +0800</pubDate><description><![CDATA[[url]http://www.vogella.de/articles/EclipseRCP/article.html[/url]

[b][Basic Concept][/b]
Eclipse RCP allows developers to use the Eclipse platform to create flexible and extensible desktop applica...]]></description><category></category></item><item><title><![CDATA[启动em和isqlplus的后台服务端]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/82036890</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/82036890</guid><author>iteye_19068</author><pubDate>Wed, 23 Mar 2011 15:48:53 +0800</pubDate><description><![CDATA[将 %oracle_home%\bin 加入 %path%

1、启动EM

emctl start dbconsole

2、启动isqlplus

isqlplusctl start 
]]></description><category></category></item><item><title><![CDATA[（转） purge的用法]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/82036336</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/82036336</guid><author>iteye_19068</author><pubDate>Tue, 22 Mar 2011 11:47:40 +0800</pubDate><description><![CDATA[本文来自优快云博客，转载请标明出处：http://blog.youkuaiyun.com/xueshenzhou/archive/2010/04/04/5449590.aspx

Oracle 10g提供的flashback drop 新特性 

为了加快用户错误操作的恢复，Oracle10g提供了flashback drop的功能。
而在以前的版本中，除了不完全恢复，通常没有一个好的解决办法。...]]></description><category></category></item><item><title><![CDATA[Automatic Shared Memory Management(ASMM)]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/82034677</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/82034677</guid><author>iteye_19068</author><pubDate>Thu, 17 Mar 2011 17:09:13 +0800</pubDate><description><![CDATA[1.base:
  1) In Oracle 10g, you need to specify only the SGA_TARGET parameter, which specifies the total size of the SGA. Individual components of the SGA are automatically allocated by the database ...]]></description><category></category></item><item><title><![CDATA[将CSV导入Oracle数据库中的办法]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/82034292</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/82034292</guid><author>iteye_19068</author><pubDate>Wed, 16 Mar 2011 19:42:46 +0800</pubDate><description><![CDATA[在Plsql Developer中 export to csv 很方便，但是没有相应的逆向的import功能， 譬如某次对查询出来的结果export to csv做了保存，之后如果需要将该csv文件再导入数据库，对这部分查询数据再做处理，会不太方便。

大约有40w数据。数据格式为：

&quot;R1_1&quot;,&quot;R1_2&quot;,&quot;R4_1&quot;,&quot;R4_2&quot;,&quot;R12&quot;,&quot;H1&quot;,&quot;RDM]]></description><category></category></item><item><title><![CDATA[只对表中的某些值建立索引]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/82033649</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/82033649</guid><author>iteye_19068</author><pubDate>Tue, 15 Mar 2011 10:26:30 +0800</pubDate><description><![CDATA[建表

create table z 
(id number primary key,
 processed_flag varchar2(1),
 payload varchar2(20)
)

processed_flag 只有两种值 'Y' or 'N'

只需要对该列的'N'值建索引

create index t_idx on z( decode(processed...]]></description><category></category></item><item><title><![CDATA[connect by clause]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/82033645</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/82033645</guid><author>iteye_19068</author><pubDate>Tue, 15 Mar 2011 10:17:29 +0800</pubDate><description><![CDATA[在某次汇总时需要得到0-100岁的某个数据集，作为left join语句的左侧，简单的做法是 


select '0岁' age from dual union all select '1岁' age from dual union all ... 


得到所有想要的数据集 用connect by子句能简化这一步骤 


select level||'岁' r from du...]]></description><category></category></item><item><title><![CDATA[Postgresql 中查询表格列名和类型的sql语句]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81719445</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81719445</guid><author>iteye_19068</author><pubDate>Fri, 08 May 2009 17:12:01 +0800</pubDate><description><![CDATA[SELECT a.attname as col_name,a.atttypid as col_type FROM  pg_catalog.pg_attribute a WHERE a.attnum &amp;gt; 0 AND NOT a.attisdropped AND a.attrelid = ( SELECT c.oid FROM pg_catalog.pg_class c LEFT JOIN pg...]]></description><category></category></item><item><title><![CDATA[Apache与Tomcat]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81689804</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81689804</guid><author>iteye_19068</author><pubDate>Fri, 13 Mar 2009 19:06:53 +0800</pubDate><description><![CDATA[今天开会上Boss有提到关于Apache，对这个服务器从没有接触过，google了一些资料。
 
Apache的特点是简单、速度快、性能稳定，并可做代理服务器来使用。本来它只用于小型或试验Internet网络，后来逐步扩充到各种Unix系统
中，尤其对Linux的支持相当完美。Apache有多种产品，可以支持SSL技术，支持多个虚拟主机。Apache是以进程为基础的结构，进程要比线程
消耗更多的系...]]></description><category></category></item><item><title><![CDATA[有关JSON]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81689469</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81689469</guid><author>iteye_19068</author><pubDate>Thu, 12 Mar 2009 15:12:51 +0800</pubDate><description><![CDATA[JSON全称JavaScript Object Notation，JavaScript对象符号，最初是JavaScript语言的数据交换格式，因为其数据表达简便，发展为跨语言的数据交换格式。
JavaScript中的JSON主要有两种语法
1. 用JSON创建对象
 
格式为 
object = {property:value,property:value...}
 
如
var person =...]]></description><category></category></item><item><title><![CDATA[property标签的escape属性]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81689464</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81689464</guid><author>iteye_19068</author><pubDate>Thu, 12 Mar 2009 14:49:59 +0800</pubDate><description><![CDATA[ 
官网中property标签的描述
 
Used to get the property of a value
, which will default to the top of
the stack if none is specified.
 
参数有三个default,escape,value，其中escape较难理解，官方解释为'Whether to escape HTML'
 
用例子...]]></description><category></category></item><item><title><![CDATA[有关DOM]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81689023</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81689023</guid><author>iteye_19068</author><pubDate>Wed, 11 Mar 2009 10:26:59 +0800</pubDate><description><![CDATA[DOM是Document Object Model的缩写，它有如下特点
1. DOM是HTML的对象模型
2. 它是HTML的编程API
3. 它是独立平台和语言的
4. 符合W3C标准
 
 

 
DOM实际上是DHTML中的概念，而DHTML不是一门技术，也不是一门语言，而是描述HTML, JavaScript, DOM, 和CSS的一个集合，这些技术集成在一起能够表达实现一个动态的网页。...]]></description><category></category></item><item><title><![CDATA[OGNL for Sturts2]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81688868</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81688868</guid><author>iteye_19068</author><pubDate>Tue, 10 Mar 2009 17:21:40 +0800</pubDate><description><![CDATA[OGNL是Object-Graph(图) Navigation(导航)
Language的缩写，它是一种功能强大的表达式语言（Expression
Language，简称为EL），通过它简单一致的表达式语法，可以存取对象的任意属性，调用对象的方法，遍历整个对象的结构图，实现字段类型转化等功
能。它使用相同的表达式去存取对象的属性。...]]></description><category></category></item><item><title><![CDATA[struts2的拦截器]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81688105</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81688105</guid><author>iteye_19068</author><pubDate>Fri, 06 Mar 2009 15:44:18 +0800</pubDate><description><![CDATA[1. 拦截器是符合DRY原则的。

DRY原则是“Don't Repeat Yourself”的缩写。意思是说，在一个设计里，对于任何东西，都应该有且只有一个表示，其它的地方都应该引用这一处。这样需要改动的时候，只需调整这一处，所有的地方就都变更过来了。

struts2的拦截器是动态配置的（struts-default.xml,struts.xml），具有可插拔性，提供了很好的代码复用，

2....]]></description><category></category></item><item><title><![CDATA[掌握jsp内部对象的十二道问题]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81687860</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81687860</guid><author>iteye_19068</author><pubDate>Thu, 05 Mar 2009 15:55:08 +0800</pubDate><description><![CDATA[转自： http://www.blogjava.net/xieruby/articles/41349.html

 

				1.out
				
对象发生错误时会抛出什么异常？

				JspWriter
				
类的常用方法有哪些？
		

				2. 

				为什么要使用JSP
内置对象，应用内置对象有什么好处？

		

				3.JSP

				
有那些内置对象，并简述他...]]></description><category></category></item><item><title><![CDATA[struts2学习笔记(2)]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81687859</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81687859</guid><author>iteye_19068</author><pubDate>Thu, 05 Mar 2009 15:52:52 +0800</pubDate><description><![CDATA[1. Struts2的Action与Servlet API解耦，但是提供了访问Servlet API的方式，因为只有通过这些API才能够访问到JSP的内部对象，譬如访问到session的内容。 Struts2可以通过ActionContext类来访问Servlet API，jsp内部对象和Servlet API 的内容参照http://blog.youkuaiyun.com/freedom0203/archi...]]></description><category></category></item><item><title><![CDATA[struts2学习笔记(1)]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81687571</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81687571</guid><author>iteye_19068</author><pubDate>Wed, 04 Mar 2009 15:27:03 +0800</pubDate><description><![CDATA[1. struts2来源于WebWork而不是struts1，因为struts1有两个缺点，1是struts1只支持jsp作为表现层技术，2是与serverlet api的严重耦合，控制器代码依赖于struts1的api，属于侵入式设计（系统需要重构时，代码很难复用）。
 
2. struts2使用WebWork的设计核心，使用拦截器来处理用户的请求，以用户的业务逻辑控制器为目标，创建一个控制器代...]]></description><category></category></item><item><title><![CDATA[URL组成部分解析]]></title><link>https://blog.youkuaiyun.com/iteye_19068/article/details/81687464</link><guid>https://blog.youkuaiyun.com/iteye_19068/article/details/81687464</guid><author>iteye_19068</author><pubDate>Wed, 04 Mar 2009 10:06:17 +0800</pubDate><description><![CDATA[原文地址 ： http://www.qf123.com/article/web/search-engine-optimization/200902/15-1679.html
 
让我们来解剖一个 URL 的所有部分。我将告诉你，在 Google 通常所涉及的分别指 URl 的哪些不同部分 。这是一个有效的 URL，并包含很多元素：
http://video.google.co.uk:80/vide...]]></description><category></category></item></channel></rss>