Home > Developer > Java

Introduction to the Java Framework article---struts

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

First understand the relationship between struts and MVC in the traditional MVC pattern, all requests are given to the servlet before the servlet calls JavaBean and the results are presented to the JSP. Structure diagram below struts is an open source project for the Jakarta Project team in the Apache fund, primarily the MVC design pattern, with its own controller (Actionservlet) in struts, also provides a variety of commonly used page tag library to reduce the JSP page scriptlet code, struts in fact belongs to the traditional technology developed a new application mode, its operation is still the nature of JSP, Servlet, JavaBean and other technology applications, The architecture diagram for struts is as follows. The relationship between MVC and the various components of struts after understanding the above we began to learn to configure the Struts development environment struts belongs to a set of separate development packages, so first from the Apache Jakart project (http://jakarta.apache.org/ Download the latest Struts Development Kit (http://struts.apache.org/), I'm using the Struts 2.1 development package, (Struts-2.1.8.1-all.jar) will all of the LIB directories in the Struts development package * . jar packages are copied to the%tomcat_home%\lib directory, or you can import the struts package directly using the MyEclipse tool, which is the package directory and then configure the Web. xml file 
<?XML version= "1.0" encoding= "UTF-8"?><Web-appXmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"xmlns= "Http://java.sun.com/xml/ns/javaee"Xmlns:web= "Http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"xsi:schemalocation= "Http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"version= "3.0">  <Display-name>Struts1</Display-name>  <Filter>    <Filter-name>Struts2</Filter-name>    <Filter-class>Org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</Filter-class>  </Filter>  <filter-mapping>    <Filter-name>Struts2</Filter-name>    <Url-pattern>*.action</Url-pattern>  </filter-mapping></Web-app>

Configure the contents of the Struts-config.xml file below for specific explanations

Development of the first Struts program

Web. XML above

Struts-config.xml

<?XML version= "1.0" encoding= "UTF-8"?><!DOCTYPE struts Public "-//apache software foundation//dtd struts Configuration 2.1//en" "http://struts.apache.org/ Dtds/struts-2.1.dtd "><Struts><constantname= "Struts.devmode"value= "true" />         <!--specify that each request arrives and reload the resource file -        <constantname= "Struts.i18n.reload"value= "true"/>        <!--specify that the automatic reload after each configuration file change -         <constantname= "Struts.configuration.xml.reload"value= "true"/>        <!--To Configure the theme to simple -        <constantname= "Struts.ui.theme"value= "simple"/>         < Packagename= "Struts"extends= "Struts-default"namespace="/">         <Actionname= "Login"class= "Com.oumyye.action.LoginAction">             <resultname= "Success">/success.jsp</result>         </Action>         </ Package></Struts>

Loginaction.java

 Packagecom.oumyye.action;Importjavax.servlet.http.HttpServletRequest;ImportOrg.apache.struts2.ServletActionContext;ImportCom.opensymphony.xwork2.ActionSupport;/** *  * @authoreven my yes * action*/ Public classLoginactionextendsActionsupport {/**     *      */HttpServletRequest Request=servletactioncontext.getrequest (); Private Static Final LongSerialversionuid = 1L; @Override PublicString Execute ()throwsException {String name=request.getparameter ("user_name");//Get user_nameRequest.setattribute ("name", name);//Set Value        returnSUCCESS; }}

JSP interface

index.jsp

<!DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en"><HTML>   <Body>    <formAction= "Login.action">Name:<inputtype= "text"name= "user_name">        <inputtype= "Submit"value= "Jump">    </form>  </Body></HTML>

success.jsp

<%@ Page Language="Java"Import="java.util.*"pageencoding="Utf-8"%><%StringPath=Request.getcontextpath ();StringBasePath=Request.getscheme ()+"://"+Request.getservername ()+":"+Request.getserverport ()+Path+"/";%><!DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en"><HTML>  <Head>    <Basehref= "<%=basePath%>">        <title>My JSP ' index.jsp ' starting page</title>  </Head>  <%    Stringname=(String) Request.getattribute ("name"); %>  <Body>Welcome<%=name%>Jump Success!! </Body></HTML>

How Struts Works

Struts is a concrete implementation of the MVC design pattern; The core class in struts is Actionform, Action, which needs to be configured in the Struts-config.xml file.

Introduction to the Java Framework article---struts

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
introduction to oops in java concise introduction to data structures using java introduction to java programming 11th edition pdf introduction to neural networks with java introduction to java programming 10th edition solutions teach kids java playful introduction to programming introduction to object oriented programming with java answers
Related Article
Analysis of Java Concurrency Aqs principle (I.)

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More