The main tags in struts-config.xml are:
<data-sources/>
<form-beans/>
<global-forwards/>
<global-exceptions/>
<action-mappings/>
<controller/>
<message-resources/>
<plug-in/>
The basic example code of struts-config.xml as given below with all tags.
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.0//EN"
"http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd">
<struts-config>
<!-- ========== DataSource properties ============ -->
<data-sources>
<data-source type="org.apache.tomcat.dbcp.dbcp.BasicDataSource">
<set-property property="driverClassName" value="com.mysql.jdbc.Driver" />
<set-property property="url" value="jdbc:mysql://localhost:3306/strutsdatabase?autoReconnect=true" />
<set-property property="username" value="root" />
<set-property property="password" value="root" />
<set-property property="maxActive" value="10" />
<set-property property="maxWait" value="5000" />
<set-property property="defaultAutoCommit" value="false" />
<set-property property="defaultReadOnly" value="false" />
<set-property property="validationQuery" value="SELECT COUNT(*) FROM test" />
</data-source>
</data-sources>
<!-- ========== Form Bean Definitions ============ -->
<form-beans>
<form-bean name="login" type="test.struts.LoginForm" />
</form-beans>
<!-- ========== Global Forward Definitions ========= -->
<global-forwards>
<forward name="logoff" path="/logoff.do"/>
<forward name="logon" path="/logon.jsp"/>
<forward name="success" path="/mainMenu.jsp"/>
</global-forwards>
<!-- ========== Global Exception Definitions ======== -->
<global-exceptions>
<exception
key="error.io.key"
type="java.io.IOException"
path="/error.jsp" />
</global-exceptions>
<!-- ========== Action Mapping Definitions ======== -->
<action path="/editSubscription"
type="org.apache.struts.webapp.example.EditSubscriptionAction"
attribute="subscriptionForm"
scope="request"
validate="false">
<forward name="failure" path="/mainMenu.jsp"/>
<forward name="success" path="/subscription.jsp"/>
</action>
<!-- ========== Controller ============ -->
<controller
processorClass="org.apache.struts.action.RequestProcessor"
contentType="text/html"/>;
<!-- ========== Message Resources ============ -->
<message-resources parameter="MyWebAppResources" null="false" />
<!-- ========== PlugIns ============ -->
<plug-in className="org.apache.struts.tiles.TilesPlugin">
<set-property property="definitions-config" value="/WEB-INF/tiles-defs.xml"/>
</plug-in>
</struts-config>