error handling

Js Forms are a very common way to interact with a Web site. JSP makes form processing easier. The standard way to work with a form in a JSP is to define a "bean". This "Bean" is not a full Java bean. You just define a class so that it has an area

1. Sample Problem:log of failures Problem example: Fault logging When an insert fails, I want to be able to record it in a log file. The example of the problem we used to show the error handling is common. I want to get the wrong record. When the

A pro*c Program Overview: 1. What is the PRO*C program In Oracle database management and system, there are three ways to access the database; (1) With Sql*plus, it has SQL commands to access the database with interactive applications; (2) using the

server| stored procedure stored procedure return result There are three ways to return results from a stored procedure: 1. Return result set This is the most common way for a client application to return results. The result set is produced by

Javascript| Tips 1. oncontextmenu= "Window.event.returnvalue=false" will completely screen the right mouse buttonno available for table 2. deselect, prevent copying 3. onpaste= "return false" is not allowed to paste 4. oncopy= ' return false; '

I believe you often see comparison of some PHP applications, said with Isset () to replace strlen (), isset faster than strlen execution speed. Example: if (Isset ($user)) { Do some thing } The reason is that isset is a language structure, and

asp.net|datagrid| Pagination | sorting 　　 The DataGrid is an important control in asp.net, and often we make the DataGrid paginated and sortable, sometimes with the option to be added. These are the methods that are often needed, but they are

web| Data | database I. Introduction Spring is a lightweight application framework. In many cases, spring can be a good substitute for the traditional services provided by Java EE application servers. Spring is both comprehensive and modular. Based

web| Program 　　 The porting of your existing struts application to the stripes framework simplifies web development, and the porting process is easier than you might think. 　　 first, the introductionPorting an existing Java Web application to a

The beginning of the review is 080. Read a few predecessors of the post, only to know that 081 and 080 are very different. The following are two additional sections, for El and Jstl. Chapter 7. Building JSP Pages Using the Expression Language (EL)

Problem Description: A basic information table, with more than 30 tables in the system, there is a foreign key relationship, when the basic data to delete, you need to determine whether has been used, if used to change the flag, if not used to

javascript| objects From the first published article, until now to publish a second article, I do not think, I will not send out. These days have been looking for JavaScript all the objects of the properties and methods, there is no way, had to

ado| Data | database | database connection have been learning the ADO database connection these days, feeling more complex, so while learning, while using, while doing some notes, some of the following things I summarized some of the ADO database

VBScript A VBScript language overview We all hope that the Web pages made are exquisite, beautiful, lively and powerful, and can be achieved with VBScript language. VBScript is a simplified version of Microsoft Visual Basic. VBScript was designed

Program | beginners Many friends think ASP is not very studious, I think actually have a certain programming foundation, plus a little bit of skill, getting started is not difficult (but to do well is not very easy, a lot of relevant knowledge-what

Errors | error handling using PHP error handling One of the common errors on the Web is an invalid link. Once an invalid link appears from another site, you will rearrange your 's site. People will save their favorite sites in a book, and if they

Program you may already be a veteran of PHP and write a lot of great code. But is it a bit of a struggle if you want to add them to your current project now? Your friend wants to use your code as a module in his project, but you find that you are

Ado The Javadoc tools can help generate good API documentation, but most Java API documentation is bad. Because it's part of the source code, the API's documentation responsibility ultimately falls to the engineer. In this article, Brian criticizes

J2ee|xml Currently, the Java 2 Platform Enterprise Edition (Java EE) architecture is highly respected in the vendor market and the developer community. As a tool, Extensible Markup Language (XML) simplifies data exchange, interprocess messaging, and

Quick Start Toad Use Quick Start Directory A A summary of Toad function Two System Requirements Three Installation Guide Four Quick Start 1. Introduction to the usage of Schema browser 2. Introduction to the use of SQL editor 3. Introduction to