weblogic下通過ajax解析不了xml文件（通過IE可能是可以打開的），這是因為xmlhttp.responseXML.documentElement返回空造成的，
這個問題原因分兩種情況：

1.動態生成文件需要通過respnse.setContentType("text/xml;charset=UTF-8")來顯示的聲明文檔類型;
2.靜態xml，這需要在web.xml中加入下面的聲明
 <mime-mapping>
 <extension>xml</extension>
 <mime-type>text/xml</mime-type>
 </mime-mapping> 
這時再次訪問時weblgoic就給加上contentType了。 
注意此時如果以前訪問過一次這個靜態的xml，ie會緩存，所以一般設置完后ajax還是不能解析，這時
需要清除ie緩存，然后再試一次就ok了:)。

對于直接通過在ie下打開文件，比如word（xml也是一樣的），默認weblogic訪問xxx.doc時返回如下的響應，沒有contentType

HTTP/1.1 200 OK
Date: Thu, 25 Oct 2007 07:22:26 GMT
Content-Length: 10752
Last-Modified: Thu, 25 Oct 2007 07:20:04 GMT
Accept-Ranges: bytes

所以也需要在web.xml加入mime-type才行
 <mime-mapping>
 <extension>doc</extension>
 <mime-type>application/msword</mime-type>
 </mime-mapping>
這時weblogic的響應信息：
200 OK
Date: Thu, 25 Oct 2007 07:28:38 GMT
Content-Length: 10752
Content-Type: application/msword
Last-Modified: Thu, 25 Oct 2007 07:20:04 GMT
Accept-Ranges: bytes

這樣可以通過提示用戶打開還是保存，而不是一堆亂碼了。

對于下載的需求，可以在servlet設置response的header
response.setHeader("Content-Disposition","attachment;filename=xxx.xxx");
關于Content-Disposition的說明：http://www.ietf.org/rfc/rfc2183.txt

界面可以通過<a href="download?file=xxx">下載</a>實現

     摘要: sybase jdbc 問題  閱讀全文

     摘要: sybase 基本語法,存儲過程,觸發器  閱讀全文

以前挺麻煩的，現在非常簡單，使用swt3.2就ok了：）

Q: How do I make SWT use the Windows XP themes?

A: In order for an application to use Windows XP themes, there must be a manifest file located in the same place as the executable that launches the application. Here is a sample manifest file to download.

The name of the manifest file must match the name of the executable. In the case of eclipse, the executable is javaw.exe and the manifest file must have the name javaw.exe.manifest. The manifest file must be in the jre\bin folder for the VM you use to launch Eclipse. Note: the eclipse.exe executable does not launch Eclipse; eclipse.exe displays a splash screen and then invokes the Java VM.

Note: As of SWT 3.2, the manifest file is no longer needed.

Oracle Bfile的處理
oracleBfile是oracle的一個lob類型，但實際存儲文件時是存儲在磁盤上的，需要自己存儲
需要在oracle上創建一個目錄的引用
create or replace directory attach_dir as 'c:/oracle/tmp'

插入bfile時
insert into table values (bfilename('ATTACH_DIR','file.ext'));

注意目錄名必須大寫，oracle在創建目錄時內部都給轉換成大寫的了
也可以在創建目錄時
create or replace directory "attach_dir" as 'c:/oracle/tmp'
加上雙引號這樣就可以用小寫的了（或大小寫混合）。

BFILE Datatype
The BFILE datatype enables access to binary file LOBs that are stored in file
systems outside the Oracle database. A BFILE column or attribute stores a BFILE
locator, which serves as a pointer to a binary file on the server’s file system. The
locator maintains the directory alias and the filename.
You can change the filename and path of a BFILE without affecting the base table
by using the BFILENAME function.
Binary file LOBs do not participate in transactions and are not recoverable. Rather,
the underlying operating system provides file integrity and durability. The
maximum file size supported is 4 gigabytes.
The database administrator must ensure that the file exists and that Oracle
processes have operating system read permissions on the file.
The BFILE datatype enables read-only support of large binary files. You cannot
modify or replicate such a file. Oracle provides APIs to access file data. The primary
interfaces that you use to access file data are the DBMS_LOB package and the OCI.
See Also:
n Oracle9i Supplied PL/SQL Packages and Types Reference and Oracle
Call Interface Programmer’s Guide for more information about
these interfaces and LOBs
n the modify_col_properties clause of ALTER TABLE on
page 11-2 and TO_LOB on page 6-178 for more information on
converting LONG columns to LOB columns
See Also: BFILENAME on page 6-23 for more information on this
built-in SQL function
See Also:
n Oracle9i Application Developer’s Guide - Large Objects (LOBs) and
Oracle Call Interface Programmer’s Guide for more information
about LOBs.
n CREATE DIRECTORY on page 13-49

一些牛人的blog

http://blog.csdn.net/calvinxiu 肖樺，江南白衣
http://blog.csdn.net/james999 胡長城
http://blog.csdn.net/yulimin/ 俞黎敏
http://robbin.javaeye.com/ 范凱
http://blog.csdn.net/wangyonggang/ 王詠剛
http://gigix.thoughtworkers.org/ 熊杰
http://blog.csdn.net/jiangtao/ 蔣濤
http://blog.csdn.net/myan/ 孟巖
http://blog.csdn.net/aimingoo/ 周愛民
http://blog.csdn.net/xiaosun 孫向暉--豆豆他爹
http://spaces.msn.com/members/zbw25/ 莊表偉

     摘要: 工作流-變量與表單的一些想法

變量-業務系統與工作流關聯的紐帶
表單-利用變量提供基本的接收用戶交互的功能（本質上就是給用戶提供一個變量的一個修改方式）
  閱讀全文

     摘要: 用bsh做條件判斷  閱讀全文

這階段在研究工作流模型，以前弄過WFMC，感覺XPDL定義的很羅唆，不如直接用戶數據建表來的快，只不過它是標準而已。

看了一下OSworkflow這個開源的工作流，自己定義的xml流程模型，比較容易理解，但是更能不完善，尤其很多的查詢功能都沒有，還需要自己實現很多東西。

最簡單的看來還是自己建些表，簡化引擎的功能。