Java

Write a javaBean file and use JExcelApi to dynamically generate an excel file. Here I will write a simple and schematic file. Complex, you may need to query the database or something. package com.jagie.test import java.io.  import jxl.

Java Server PageJSP) is becoming increasingly popular as a technology to build dynamic web pages. In this JSP tutorial, we will talk about the security programming of JSP instances. JSP is not the same as ASP, PHP, and working mechanism. Generally,

1. Difference between request. getParameter () and request. getAttribute () 1. request. getParameter () is achieved through the implementation of the container to obtain data transmitted through methods such as post and get, request. setAttribute ()

1. Structure of the demo table in the JSP Forum: Table Name: mybbslist Field data type description Automatic BBSID ID RootID Int root post ID, which is the root postRootID= ID FID Int parent post ID, the ID of the previous post, if it

Use the Jdbc-odbc bridge to connect, but this sacrifices the speed. If you use the Jdbc-odbc bridge, it is the same as connecting to access. You must first set a data source DNS and then use:◆ Class. forName ("sun. Jdbc. odbc. JdbcOdbcDriver ");◆

For beginners of JSP, jsp iis must have a big header! Although JK2 in Jakarta can be used to solve the problem, its configuration is rather cumbersome! Use ServletExec! For mainstream JSP servers, besides TOMCAT, JRUN and ServletExec, ServletExec is

JPPF is an open-source grid computing framework that can run multiple java applications simultaneously in a distributed execution environment. The JPPF framework uses a resource adapter compatible with the JCA 1.5 specifications to integrate with

The J2EE quick development framework Wabacus 3.4 has been released. With this framework, the developer's code volume can be reduced by more than 60%, and the development efficiency can be increased by more than five times. Major update list for

JID 1.3.0 is released, which restructured the code and relies on the newly released version of JActor 4.0. JID is a Map object for deserialization, update, and re-serialization. It takes only 4 milliseconds to complete 2.53 operations on an i5 10000

RethinkDB was first used as a MySQL storage engine specially optimized for SSD. It features full utilization of SSD. Currently, RethinkDB is separated from MySQL to become an independent storage. RethinkDB supports various underlying storage: SSD,

Assumerver Pages (JSP) and XML are two crucial components of Sun's J2EE. JSP is an effective tool for creating application server programs, and the customer can be a browser, a device, or other applications. You can use XML to describe the data and

I. Overview In Web applications, the generation of some reports may take a long time for the database to calculate. Some websites provide weather information, which requires access to a remote server for SOAP calls to obtain temperature information.

Method 1: cache data in the servlet init () method After the application server initializes the servlet instance and provides services for client requests, it will call the init () method of the servlet. In the lifecycle of a servlet, The init ()

This problem may be of the greatest concern to many Java developers, especially new users. Now I will simply list some simple but effective methods: Reading other people's posts on various technical forums, especially those posts with a high number

Background: 1. List the database query results in JSP 2. In a good J2EE mode, Data Access Object is usually implemented using DAO for database queries. JSP is only used to display Data. Solution 1: Use Value Object. encapsulate each record into a

To run the code in this article, you need a Tomcat or other Web server that supports JSP 1.1. When a Web page is sent with the MIME type of image/jpeg (or other image formats), your browser treats the returned result as an image and then displays

As a rising star, JSP plays a certain role in the Server programming environment and is closely related to its good support of a series of industry standards. Session is one of the infrastructure it provides. As a programmer, you can easily

Java Server Pages (JSP), which promotes rapid program development on the Server side, makes it a popular tool. Although the dull side still exists, JSP can provide a lot of things for Web programmers, especially with database input and output

JSP file operations are an important part of website programming. Asp has discussed a lot about file operations. Let's take a look at how JSP files are implemented. Compile file. After compiling the JavaBean file, place the class file in the

The programming power comes from solving the problem. What are the common JSP problems? The following are 16 common JSP problems to be presented in this article. In the process of JSP programming will encounter a variety of problems, then we will