Kim-'s-Blog.Object-Everything.I'm POJO.

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http://hashkiller.com/   
还可以
MD5反编译

在CXF Client 调用是总是出现这个错误。
我用的是JDK6.0
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
变成了
com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl
加一句
System.setProperty("javax.xml.parsers.DocumentBuilderFactory", "com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl");
不会出现这个错误
但会
java.lang.NoSuchMethodError: javax.xml.parsers.DocumentBuilderFactory.getSchema()Ljavax/xml/validation/Schema;
连方法都变了 晕哦

在往Spring2.0项目中添加XFire时（Myeclipse）出现如下错误
Document root element "beans", must match DOCTYPE root "null".
原因：XFire Core lib 中有Spring1.2.6 与Spring 2 冲突！

可以这样写：
execution(* com.foo..*.*(..)) and !execution(* com.foo.bar..*.*(..)).

every method in com.foo but not in com.foo.bar.

封装有它的好处，使用封装可以掩盖细节，（如Spring.JSF.Hibernate.Spring还会留好多回调接口），对于封装我的看法是：要做到 想进就进，想出就出，随心所欲。提升自己的境界。（最近在做一个框架有感）

要回武汉了，告别深圳中...
最近很忙的，以后有时间一定常来看看

When a method is idempotent, in short, you are guaranteeing that regardless of when or how often it's used, no "side effects" will occur.

對每一個相同的query string
不管你執行多少次
所得到的結果要一樣

doPost()

This method does not need to be either safe or idempotent. Operations requested through POST can have side effects for which the user can be held accountable, for example, updating stored data or buying items online.

     摘要: Dos命令有必要再复习下...
Ant 有可能用到。
------------------------------------------------------------------------------
第1、最常用的命令
　　cd　　　　　改变当前目录　　　　　　　sys 　　制作DOS系统盘

　　copy　　　　拷贝文件　　　　　　　　　del 　　删除文件

　　deltree　 　删除目录树　　　　　　　　dir 　　列文件名

　　diskcopy　　制磁盘　　　　　　　　　　edit　　文本编辑

　　format 　　 格式化磁盘　　　　　　　　md　　　建立子目录

　　mem 　　　　查看内存状况　　　　　　　type　　显示文件内容

　　rd　　　　　删除目录　　　　　　　　　ren 　　改变文件名 ..........
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Distributed Computing: an abstract concept. Very general.

Cluster: tightly-coupled distributed computing. A Cluster is usually inside the same room, using same computers, same OSs, connected using dedicated clustering software.

Grid: loosely-coupled distributed computing. A Grid is usally dispersed anywhere far-away from each other, and you do not know what computers, what OS on each node, you only know they communicate via HTTP(s)/XML in a black-box style. More flexible.

Parallel Computing: very tightly-coupled distributed computing, like a few CPUs inside a PC. Parallelism was a dream in 1980-1990 but that concept failed, because many things cannot be split into parallel tasks. The overhead to write parallel algorithm is tramendous. People no longer use this term much these years.

P2P: an extremely loosely-coupled distributed computing. Since the name was ruined by Napster, people try to avoid using this term in their serious projects.

In particular, for Cluster vs. Grid, I have some further comparison:

Cluster: PCs inside a same locked room; Grid: distributed, not in same room.

Cluster: ususally same OS, same machines; Grid: very different unknown platforms;

Cluster: tightly-coupled system; Grid: loosely-coupled system.

Cluster: bound together by TCP/IP on LAN; Grid: connected by HTTP/XML on WAN.

Cluster: like teamwork; Grid: like collaboration

Hibernate
Ibatis

出现N+1  Select时，可以通过外连接，或写Procedure解决。