Page History

...

Start up your Servlet container and in a web browser go to http://localhost:8080/Basic_Struts2_Ant/index.jsp^{Image Removed}. You should see the following:

...

Setup a log4j.xml configuration in the src folder. You can copy the one from the example application, which contains the following

Code Block

	xml	xml
title	log4j.xml
	xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration PUBLIC "-//log4j/log4j Configuration//EN" "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
    
    <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
       <layout class="org.apache.log4j.PatternLayout"> 
          <param name="ConversionPattern" value="%d %-5p %c.%M:%L - %m%n"/> 
       </layout> 
    </appender>
 
    <!-- specify the logging level for loggers from other libraries -->
    <logger name="com.opensymphony">
    	<level value="DEBUG" />
    </logger>

    <logger name="org.apache.struts2">
    	 <level value="DEBUG" />
    </logger>
  
   <!-- for all other loggers log only debug and above log messages -->
     <root>
        <priority value="INFO"/> 
        <appender-ref ref="STDOUT" /> 
     </root> 
    
</log4j:configuration>

...

To enable the Struts 2 framework to work with your web application you need to add a Servlet filter class and filter mapping to web.xml. Below is the filter and filter-mapping nodes you should add to web.xml.

xml

Code Block

	xml
title	web.xml Servlet Filter
	xml

<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>/*</url-pattern>
</filter-mapping>

...

Struts 2 can use either an XML configuration file or annotations (or both) to specify the relationship between a URL, a Java class, and a view page (such as index.jsp). For our basic Struts 2 application, we'll use a minimal xml configuration. Note the file name is struts.xml and it should be in the src folder (struts.xml must be on the web application's root class path).

Code Block

	xml	xml
title	struts.xml
	xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

	<constant name="struts.devMode" value="true" />

	<package name="basicstruts2" extends="struts-default">

		<action name="index">
			<result>/index.jsp</result>
		</action>

	</package>

</struts>

...

Open a web browser and go to http://localhost:8080/Basic_Struts2_Ant/index.action^{Image Removed} (note that's index.action not index.jsp at the end of the URL). You should see the same web page as when going to http://localhost:8080/Basic_Struts2_Ant/index.jsp^{Image Removed}. View the log messages written to the console and you should find several that discuss index.action and index.jsp:

Code Block

	java	java
title	Struts 2 Log Messages
	java

com.opensymphony.xwork2.DefaultActionProxy.debug:57 - Creating an DefaultActionProxy for namespace / and action name index
...
org.apache.struts2.dispatcher.ServletDispatcherResult.debug:57 - Forwarding to location /index.jsp

...

Child pages

Versions Compared

Old Version 9

New Version 10

Key