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Get Started 1 |
You need to know how simple J2EE web application structure is e.g. WEB-INF folder, context, web.xml before proceeding.
Struts2 is MVC2 architecture framework. There will be one main Struts dispatcher filter,
your application server will need to know about this filter i.e. entry is needed in web.xml.
Then Filter will need to pass request and response to application web actions (struts.xml).
Views shall have two states when it is loaded first time and second when user submits them.
Struts2 version used in this tutorial is: Struts2-Version: struts2-core-2.1.6.
BTW version can be found in MANIFEST.MF file in Struts.jar: Bundle-Version: 2.1.6.
Steps
| 1 |
Create Web application folders and add Struts2 and common jars |
| 2 |
Change application web.xml for Struts2 filter StrutsPrepareFilter, StrutsExecuteFilter |
| 3 |
Create struts.xml for global application actions
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| 4 |
Create login.xml for application action
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| 5 |
Create log4j.xml for logging
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| 6 |
Create DTO class or a value object (POJO) to pass your data |
| 7 |
Create application action class
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| 8 |
Create application jsps
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| 9 |
Run |
1A: Create web application folder structure
Note: Compiled classes shall go in classes folder
1B: Add following jars /WEB-INF/lib/
commons-beanutils-1.8.1.jar
commons-collections-3.2.1.jar
commons-dbcp.jar
commons-digester.jar
commons-fileupload-1.2.1.jar
commons-io-1.3.2.jar
commons-io-1.4.jar
commons-lang-2.4.jar
commons-logging.jar
commons-net-1.1.0.jar
commons-pool.jar
commons-validator.jar
freemarker-2.3.13.jar
jstl.jar
junit-3.8.1.jar
log4j-1.2.15.jar
ognl-2.6.11.jar
spring-test-2.5.6.jar
struts2-core-2.1.6.jar
xwork-2.1.2.jar
2: /WEB-INF/web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Struts2App</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<filter>
<filter-name>struts-prepare</filter-name>
<filter-class>
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter
</filter-class>
</filter>
<filter>
<filter-name>struts-execute</filter-name>
<filter-class>
org.apache.struts2.dispatcher.ng.filter.StrutsExecuteFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts-prepare</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>struts-execute</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
Note: org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter is Struts filter and
struts.xml will contain application action definitions.
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