Learning to use dispatchaction

Dispatchaction is inherited from the action class. It is an abstract class that encapsulates some basic methods to solve the problem of using an action to process multiple operations. This is the biggest purpose of dispatchaction, it can help us use

Start writing articles

I have been working for almost two months. I have learned a lot of things, and a lot of knowledge is too late for the system to digest and absorb. I found some information on the Internet for temporary use of the project and completed the task with

Redo and undo

Basic knowledge popularization: Redo logRedo log. The default value isIb_logfile0,Ib_logfile1, UNDO logUNDO log, in the shared tablespace, Redo log: each time a transaction is committed, the change operation is recorded in the redo log first.

Example of a trigger

Create or replace trigger "usremhr". trg_sq_rule_insertBefore insert on sq_rule_baseFor each row DeclareTemp_rule_id varchar2 (10 );Temp_rul_theme_id varchar2 (10 );Begin BeginTemp_rule_id: =: New. rule_id;Temp_rul_theme_id: =: New.

Use barcode4j to generate a barcode

Use barcode4j to generate a barcode Root decorator: this is a layer of abstraction that Confluence doesn't need. It will be removed eventually.--> Barcode4j Barcode4j is a flexible Generator for barcodes written in Java. It's free, available

Chinese characters in zabbix Chinese characters are garbled or in boxes.

Zabbix-1.8.13 After adding a graph, some Chinese characters in the graph are boxes. The reason is obviously the font. Method: View zabbix information. The font file is stored in the web directory zabbix/fonts/dejavusans. TTF. Therefore,

Zabbix email alert

Zabbix implements email Alarm Through sendmail Http://bbs.linuxtone.org/thread-9401-1-1.html The Installation Process of Sendmail is skipped here. If you have any friends, you can search for related articles on Google. My zabbix environment: OS:

Use ibatis to call the stored procedure and return the value

Write sqlmap as follows: {? = Call sf_generate_occur_should.sf_feeitem_in_out (?,?,?,?,?)} This is called in Java: Public String generateshoulddatafrommanlist (string XH, string ZY, string XY, string rxnf, string autocode) { map

About no_data_found and % notfound

About no_data_found and % notfound Generally, beginners do not know enough about the usage of the reserved words no_data_found and % notfound in Oracle, mainly because they are similar in the sense. In fact, their usage is different. The following

Difference between SQL truncate, delete and drop

Similarities: 1. truncate, delete without WHERE clause, and drop all Delete table data.   2. Drop and truncate are all DDL statements (Data Definition Language), which are automatically submitted after execution.   Differences: 1. truncate and

Configure the Struts-based Web development environment in eclipse3.0.x

1. EclipseDownload URL: http://www.eclipse.org/As soon as I entered the article, I was a little confused. Thanks to more than N versions, I found a stable version, and I went down to 3. 0. 1 2. TomcatDownload URL:

Force refresh local DNS Cache records

During reprinting, you must use hyperlinks to indicate the original source and author information of the article and this copyright statement.Link: http://www.dbasky.net/archives/2011/02/-dns.htmlTo improve the DNS resolution record, Many operating

Picocontainer-One Minute Description

From: http://www.picocontainer.org/One+minute+description One Minute Description1 minute description   Authors: Paul hammant, asak hellesoy, Jon tirsenWhat is picocontainer? What is a micro container? Picocontainer is a

Merge, cut, and convert rmvb Films

1. Merge rmvb Films Objective: To facilitate continuous viewing, You need to merge and merge the films into A and B sets. Software: Helix producer plus 9 Download: http://www.shooter.com.cn /? Softid = helixp & Site = 1 SN: 212-08976-3639 Method: A

Description of to_date () Date Format Parameters

Description of date format parameters:D. day of the weekThe name of day, which is filled with spaces to 9 characters.Day of DD monthThe day of the year in DDDShort Name of Dy dayWeek of the Year of the iw iso StandardFour-digit year of the iyyy ISO

Ibatis SQL maps

I had to learn about jpetstore yesterday, so I checked the document on the ibatis official website today. It is indeed worth learning and applying SQL maps. ------ Ibatis can be said to be very easy to use. You only need to understand JavaBeans, XML,

Summary of recent work

In a twinkling of an eye, one winter has passed, and the summer has almost passed. After arriving at Company X, I haven't been writing anything on my blog for a long time. Obviously, I feel that my work is much more intense than that of my company,

Example of a function

Create or replace function "fetchname" (v_cdno varchar2,V_type varchar2, v_pmodid varchar2)Return varchar2IsV_name varchar2 (50 );Begin V_name: = '';If v_type = 'application' thenSelect ap_appname into v_name from application where ap_appid = v_cdno;

J2EE 2nd course notes-Servlet

This lesson has some basic servlet knowledge! 1. Access the servlet locally (take the Tomcat server as an example ): Http: // locatlhost: 8080/servlet/Name of your Servlet In this way, you can directly access this servlet! 2. When using jcreator for

Convert the numeric string RMB into a uppercase string RMB

/* * Creation date: 2005-3-8 * * To change the template of the generated file in todo, go * Window-preferences-Java-code style-Code Template */ Package com. test; /*** @ Author Administrator** To change the template of the type comment generated by

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