Programmer Think

1. Introduction Principle: User-defined jsp tags.When a jsp page with a custom tag is compiled into a servlet by the jsp engine, the tag tag is converted into an operation on an object of a tag processor class. Tag Library API: Defined in javax.servlet.jsp.tagext   2. Lifecycle of label processor class implementing SimpleTag interface 1) setJs ...

I've learned the basic usage of struts 2 before, and then I'll talk about the three access methods of struts 2.The first way: specify the method attributeThe second way: dynamic method invocation (exclamation mark mode, need to turn on the corresponding switch), the official network is not recommended to use.The third way: wildcard mode, recomm ...

Interceptor, as its name implies, is interception, not robbery!!! (Pictures are from the Internet. If you have copyright or moral problems, please notify the blogger to delete them. Thank you.)It's like a thief.Not This drop.Going back to the point, what exactly is the interceptor in struts 2? Let's Baidu··· Er, wrong, let ...

I. Submit information to appStore First step The second step The third step Finish Step 3 and remember to save The fourth step The fifth step First click SetUp of Contact Info The sixth step The seventh step Fill it out, save it, and go back to the previous page. The eighth step The ninth step The te ...

1. Create a dynamic web project 2. Importing the jar packages needed by Spring Mvc (you can find them online, there are many resources) The first two parts are not described in detail, but the second part is the formal code.~ First of all, there is a web.xml file, which belongs to the large configuration file. As long as you write login, you ca ...

Insecure "Check before Execution", code form as follows: if(Conditional satisfaction){ //Thread security issues are prone to occur here //doSomething }else{ //doOther } Read-modify-write Atomic operation: Using CAS technology, first read the value A from V and calculate the new value B according to A, then change the value o ...

Official introduction: Layer is still the representative work of Layui. It is not accidental that its audience is widespread. It is the persistence of more than five years, continuous improvement and maintenance, continuous construction and improvement of community services, which makes apes spread spontaneously and even become the most powerfu ...

Write an item today about a merchandise added to the shopping cart function, originally designed to store data after clicking a button, and pop up a div to inform the user that the addition was successful, the page does not jump, seemingly simple function, but stuck at the point of "no jump". I don't want t ...

https://www.cnblogs.com/vmax-tam/p/4145334.html Development steps of custom tags Step one Write a common java class that inherits the TagSupport class~ package com.vmaxtam.dotest; import javax.servlet.jsp.tagext.TagSupport; public class MyTagTest extends TagSupport { } Step two Rewrite the setPageContext method of the parent class to ...

1. First you can go to Ueditor on the official website to see detailed documentation, including how to install to Eclipse, related jar packages, and how to use Ueditor. This article mainly describes how to upload single pictures and use your own interface: Run tomcat, run in google browser (Test is my project name): http://lo ...