<?xml version="1.0"?>
<document url="installation.html">

  <properties>
    <author>Craig R. McClanahan</author>
    <author>Mike Schachter</author>
    <author>Ted Husted</author>
    <author>Martin Cooper</author>
    <author>Chris Assenza</author>
    <author>dIon Gillard</author>
    <author>Eric Wu</author>
    <author>John Rousseau</author>
    <author>John Ueltzhoeffer</author>
    <author>Mark Budai</author>
    <author>Paul Runyan</author>
    <author>Robert Hayden</author>
    <author>Stanley Santiago</author>
    <author>Wong Kok Kai</author>
    <author>Rob Leland</author>
    <author>John Berry</author>
    <title>The Struts Framework Project - Installation (1.1)</title>
  </properties>

  <body>
  <chapter name="6.2 Installation" href="installation">
  <section name="Prerequisite Software" href="Prerequisites">

  <p>The Struts binary distribution needs three other software packages installed to
  operate. You may already have these installed on your system. To build Struts from
  source you may need to acquire and install several others. The complete list is as
  follows:</p>

  <ul>
  <li><strong>Java Development Kit</strong> - You <strong>must</strong> download and install
      a Java2 (version 1.2 or later) Java Development Kit implementation for
      your operating system platform.
      A good starting point for locating Java Development Kit distributions is
      <a href="http://java.sun.com/j2se">http://java.sun.com/j2se</a>.
      To build Struts, Java 1.4.2 (the latest production JDK) is suggested. </li>

  <li><strong>Servlet Container</strong> - You <strong>must</strong> download and install a
      servlet container that is compatible with the Servlet API Specification,
      version 2.2 or later, and the JavaServer Pages (JSP) Specification,
      version 1.1 or later.  One popular choice is to download Apache's
      <a href="http://jakarta.apache.org/tomcat/">Tomcat</a>, but any compliant
      container should work well with Struts.</li>

  <li><strong>XML Parser</strong> - Struts <strong>requires</strong> the presence of an XML
      parser that is compatible with the Java API for XML Parsing (JAXP)
      specification, 1.1 or later. This is bundled with J2SE 1.4 and later.
      For earlier versions of Java, the easiest way to obtain JAXP is
      probably by downloading the Web Services Developers Kit
      (1.1 or later!). See the <a href="http://java.sun.com/xml/jaxp/faq.html#jaxp-ri-latest">
      Sun JAXP FAQ</a> for more information.)
      In Struts-based web applications, you may replace the reference
      implementation classes with any other JAXP compliant parser, such as
      <a href="http://xml.apache.org/xerces-j">Xerces</a>.  See detailed
      instructions related to the parser in the instructions for
      <a href="#Building">building</a> and <a href="#Installing">installing</a>
      Struts, below.</li>

  <li><strong>Ant Build System</strong> - If you are building Struts from the
      source distribution, you must download and install version 1.5.4 (or later)
      of the <a href="http://jakarta.apache.org/ant">Ant</a> build system.
      <ul>
      <li>Make sure that the "ant" and "ant.bat" scripts are executable, by
          adding the $ANT_HOME/bin directory to your PATH environment
          variable.</li>
      <li>
          Copy and review either the "build.properties.sample" or
          "build.properties.sample.lib" file as "build.properties".
          The latter is recommended if you are not active in Jakarta
          Commons development.
      </li>
      <li>
      <a href="http://maven.apache.org/">Maven</a> property files are also
      provided, but the Maven build is still experimental. New developers
      may find Maven easier to use, since it acquires the appropriate JARs
      automatically.
      </li>
      </ul>
      </li>

  <li><strong>Servlet API Classes</strong> - In order to compile Struts itself,
      or applications that use Struts, you will need a <code>servlet.jar</code>
      file containing the Servlet and JSP API classes.  Most servlet containers
      include this JAR file.  Otherwise, you can get the Servlet API classes
      distribution from
      <a href="http://jakarta.apache.org/builds/jakarta-servletapi">here</a>.
      </li>

  <li><strong>JDBC 2.0 Optional Package Classes</strong> - Struts supports
      an optional implementation of <code>javax.sql.DataSource</code>, so it
      requires the API classes to be compiled.  They can be downloaded from
      <a href="http://java.sun.com/products/jdbc/download.html">http://java.sun.com/products/jdbc/download.html</a>.</li>

  <li>
      <strong>Other Packages</strong> - Struts utilizes several
      packages from other open source projects, especially the <a href="http://jakarta.apache.org/commons/">Jakarta
      Commons Project</a>.
      These are the packages which must be available if you wish to
      build Struts from source:
      <ul>
      <li><a href="http://www.antlr.org/">ANTLR</a> (Version 2.7.2)</li>
      <li><a href="http://jakarta.apache.org/commons/beanutils/">Jakarta Commons Beanutils</a> (Version 1.7.0)</li>
      <li><a href="http://jakarta.apache.org/commons/digester/">Jakarta Commons Digester</a> (Version 1.6)</li>
      <li><a href="http://jakarta.apache.org/commons/fileupload/">Jakarta Commons FileUpload</a> (Version 1.0)</li>
      <li><a href="http://jakarta.apache.org/commons/logging/">Jakarta Commons Logging</a> (Version 1.0.4)</li>
      <li><a href="http://jakarta.apache.org/commons/validator/">Jakarta Commons Validator</a> (Version 1.1.4) </li>
      <li><a href="http://jakarta.apache.org/oro/">Jakarta ORO</a> (Version 2.0.7)</li>
      </ul>
      ANTLR is a <a href="http://antlr.org/license.html">public domain library</a>;
      all other libraries are distributed under the
      <a href="http://www.apache.org/licenses/">Apache Software License</a>.
      For your convenience, the requisite JARs are provided as a single
      download under the <code>lib</code> sub-directory with each release
      distribution.
      Please note that the minimum requirements may change between releases,
      and some JARs may need to be updated to use the latest Nightly Build.
  </li>

  <li><strong>Xalan XSLT Processor</strong> - If you are building Struts from
      the source distribution, you will need a version of Xalan to perform
      XSLT transformations. If you are using the JAXP/1.1 XML parser, you
      should use the version of <code>xalan.jar</code> shipped with it.
      Otherwise, download and install version 1.2 of Xalan from
      <a href="http://xml.apache.org/xalan">here</a>.
  </li>

  <li><strong>Unit tests</strong> - To verify your build against the JUnit and
      Cactus unit tests, three other packages must be available:
      <ul>
      <li><a href="http://jakarta.apache.org/cactus">Jakarta Cactus</a> (Version 1.4.1)</li>
      <li><a href="http://jakarta.apache.org/commons/lang/">Jakarta Commons Lang</a> (Version 2.0)</li>
      <li><a href="http://www.junit.org">JUnit</a> (Version 3.8.1)</li>
      </ul>
      </li>

  </ul>

  </section>

  <section name="Install A Struts Binary Distribution" href="Installing">

    <p>First, download a binary distribution of Struts by following the
    instructions <a href="../acquiring.html">here</a>.  Then, make sure
    you have downloaded and installed the
    <a href="#Prerequisites">prerequisite</a> software packages described
    above.</p>

    <p>Unpack the Struts binary distribution into a convenient directory.
    (If you <a href="#Building">build Struts from the source distribution</a>,
    the result of the build will already be an unpacked binary distribution
    for you). The distribution consists of the following contents:</p>

    <ul>
    <li><strong>lib/*.jar</strong> - The struts.jar contains the Java classes
        distributed by the Struts project. The other JAR files contain packages
        from other projects that are imported by Struts. When you launch
        a Struts-based application, these JARs need to be available to your
        application, usually by copying them to the application's
        <code>WEB-INF/lib</code> directory. <br />
        <em>WARNING</em> - If you are going to be hosting multiple Struts
        based applications on the same servlet container, you will be tempted
        to place the <code>struts.jar</code> file into the shared repository
        supported by your container.  Be advised that this may cause
        ClassNotFoundException problems unless <em>all</em> of
        your application classes are stored in the shared repository.</li>
    <li><strong>lib/*.tld</strong> - These are the "tag library
        descriptor" files that describe the custom tags in the various Struts
        tag libraries. The tld file for any Struts taglibs that you use should
        be copied into the <code>WEB-INF</code> directory of your web
        application. (Applications under Servlet 2.3 containers can omit this
        step if the <a href="configuration.html#dd_config_taglib_23">standard uri</a>
        is referenced.)</li>
    <li><strong>webapps/struts-blank.war</strong> - This is a simple "web
        application archive" file containing a basic starting point for
        building your own Struts-based applications.</li>
    <li><strong>webapps/struts-documentation.war</strong> - This is a
        "web application archive" file containing all of the Struts
        documentation found on the
        <a href="http://struts.apache.org/">Struts web site</a>
        (including these pages).  You can install this web application
        on any servlet container compatible with Servlet API 2.2 or later.</li>
    <li><strong>webapps/struts-examples.war</strong> - This "modular"
        applications combines several usefule demonstrations:
        <ul><li>Exercise-Taglib - This application module contains test pages for
        the various custom tags distributed with Struts.  It is primarily of use to
        developers who are enhancing the Struts custom tag libraries, but may also
        be useful as simple examples of the usage of various Struts tags.</li>
    <li><strong>Upload</strong> - This application module
        is a quick example of uploading files using the Struts framework.
    </li>
    <li><strong>Validator</strong> - This application module
        is an example of using the validator framework, using both the
        server-side and optional client-side validation.
    </li></ul></li>
    <li><strong>webapps/struts-mailreader.war</strong> - This is an example
        web application that uses a large percentage of Struts features.
        You can install this web application on any servlet container
        compatible with the Servlet 2.2 (or later) and JSP 1.1 (or later)
        specifications.  If an XML parser is not made available to web
        applications by your container, you will need to add one to the
        WEB-INF/lib directory of this web application.</li>
    <li><strong>webapps/tiles-documentation.war</strong> - This web
        application documents how to use tiles, and was developed using tiles.</li>
    </ul>

    <p>To use Struts in your own application, you will need to follow
    these steps:</p>
    <ul>
    <li>Copy the <code>lib/*.jar</code> files from the Struts
        distribution into the <code>WEB-INF/lib</code> directory of your
        web application.</li>
    <li>Copy the <code>lib/*.tld</code> files for any Struts taglibs you use
        from the Struts distribution into the <code>WEB-INF</code> directory
        of your web application.</li>
    <li>Modify the <code>WEB-INF/web.xml</code> file for your web application
        to include a <code>&lt;servlet&gt;</code> element to define the
        controller servlet, and a <code>&lt;servlet-mapping&gt;</code> element
        to establish which request URIs are mapped to this servlet. Use the
        <code>WEB-INF/web.xml</code> file from the Struts example application
        for a detailed example of the required syntax.</li>
    <li>Modify the <code>WEB-INF/web.xml</code> file of your web application
        to include the following tag library declarations (Servlet 2.3 can omit
        this step if the <a href="configuration.html#dd_config_taglib_23">standard uri</a>
        is referenced):</li>
    </ul>

<pre>&lt;taglib&gt;
  &lt;taglib-uri&gt;/WEB-INF/struts-bean.tld&lt;/taglib-uri&gt;
  &lt;taglib-location&gt;/WEB-INF/struts-bean.tld&lt;/taglib-location&gt;
&lt;/taglib&gt;

&lt;taglib&gt;
  &lt;taglib-uri&gt;/WEB-INF/struts-html.tld&lt;/taglib-uri&gt;
  &lt;taglib-location&gt;/WEB-INF/struts-html.tld&lt;/taglib-location&gt;
&lt;/taglib&gt;

&lt;taglib&gt;
  &lt;taglib-uri&gt;/WEB-INF/struts-logic.tld&lt;/taglib-uri&gt;
  &lt;taglib-location&gt;/WEB-INF/struts-logic.tld&lt;/taglib-location&gt;
&lt;/taglib&gt;
</pre>

    <ul>
    <li>Create a file <code>WEB-INF/struts-config.xml</code> that defines the
        action mappings and other characteristics of your specific application.
        You can use the <code>struts-config.xml</code> file from the Struts
        example application for a detailed example of the required syntax.</li>
    <li>At the top of each JSP page that will use the Struts custom tags,
        add line(s) declaring the Struts custom tag libraries used on
        this particular page, like this:</li>
    </ul>

<pre>&lt;%@ taglib uri="/tags/struts-bean" prefix="bean" %&gt;
&lt;%@ taglib uri="/tags/struts-html" prefix="html" %&gt;
&lt;%@ taglib uri="/tags/struts-logic" prefix="logic" %&gt;
</pre>

    <ul>
    <li>When compiling the Java classes that comprise your application, be sure
        to include the JAR files (copied earlier) on the
        CLASSPATH that is submitted to the compiler.</li>
    </ul>
</section> <section name="Installing Struts With Your Servlet Container" href="Containers">

<p>For most containers, you need only to: </p>
<ul>
  <li>Copy the WAR files in your Struts <code>/webapp</code> directory to your
    containers <code>webapps</code> directory. </li>
  <li>In some cases, you may need to restart your container if it is running.</li>
</ul>

<h4>Running Struts Applications Under A Security Manager</h4>

<p>Many application servers execute web applications under the control of a
Java security manager, with restricted permissions on what classes in the web
application can do.  If you utilize form beans with mapped properties, you may
encounter security exceptions unless you add the following permission to the
set of permissions granted to your Struts application's codebase:</p>
<pre>
  permission java.lang.RuntimePermission "accessDeclaredMembers";
</pre>

<p>Consult the documentation on your application server for more information
about how to configure additional security manager permissions.</p>

<h4>Installing Struts on Various Containers</h4>
<ul>
  <li>Bluestone Universal Business Server 7.2 - <a href="installation-ubs72.html">Additional
    steps required.</a></li>
  <li>Borland Application Server 4.5 -No additional
    steps required.</li>
  <li>iPlanet Application Server - Service Pack 2 is recommended. Note that the database
  object in the Struts-Example application is not compatible with this container.</li>
  <li>iPlanet Web Server - <a href="installation-ip.html">Additional steps required.</a></li>
  <li>iPortal Application Server - <a href="installation-ipas.html">Additional steps required.</a></li>
  <li>Jetty - <a href="installation-jetty.html">Additional steps required.</a></li>
  <li>JRun - <a href="installation-jr30.html">Additional steps required.</a></li>
  <li>Novell ExteNd Application Server 4.0+ -
      <a href="installation-novell.html">Additional steps required.</a></li>
  <li>Orion Application Server - <a href="installation-oas.html">Additional steps
    required.</a></li>
  <li>Resin 1.2+ "standalone" - No additional steps required.</li>
  <li>RexIP - No additional steps required.</li>
  <li>SilverStream 3.7.1 and later - <a href="installation-sas.html">Additional steps required.</a></li>
  <li>Tomcat 3.1 and prior - Not recommended. Use Tomcat 3.2.1 or later.</li>
  <li>Tomcat 3.2.1 with Apache - <a href="installation-tc.html">Additional steps
    required.</a></li>
  <li>Tomcat 3.2.1+ "standalone" - No additional steps required.</li>
  <li>Tomcat 4.0 - No additional steps required.</li>
  <li>Trifork Enterprise Application Server 3.3.x - No additional steps required.</li>
  <li>Weblogic 5.1 sp8 - <a href="installation-wls5.html">Additional steps required.</a></li>
  <li>WebLogic 6.0+ - No additional steps required.</li>
  <li>WebSphere - <a href="installation-was352.html">Additional steps required.</a></li>
  <li>WebSphere - <a href="installation-was352-x.html">Steps for the Example Application.</a></li></ul>
</section>

<section name="Building Struts From Source" href="Building">

    <p>First, download a source distribution of Struts by following the
    instructions <a href="../acquiring.html">here</a>.  Then, make sure
    you have downloaded and installed <strong>all</strong> of the
    <a href="#Prerequisites">prerequisite</a> software packages described
    above.</p>

    <p>To build Struts, you will need to customize the build process to the
    details of your development environment as follows:</p>
    <ul>
    <li>The Struts source distribution uses a file named
        <code>build.properties</code> (in the top-level directory of the
        distribution) to identify the location of external components
        that Struts depends on.</li>
    <li>There is no <code>build.properties</code> file included with the
        source distribution.  However, there is an example file named
        <code>build.properties.example</code> that you can copy to
        <code>build.properties</code> and then customize.</li>
    <li>The properties you must configure in <code>build.properties</code> are:
        <ul>
        <li><strong>catalina.home</strong> - Pathname to the directory of your
            binary distribution of Tomcat 4.0 (required only if you wish to
            use the <code>deploy.catalina</code> target).</li>
        <li><strong>commons-beanutils.jar</strong> - Pathname of the BeanUtils
            package JAR file from the Jakarta Commons project.</li>
        <li><strong>commons-collections.jar</strong> - Pathname of the
            Collections package JAR file from the Jakarta Commons project.</li>
        <li><strong>commons-digester.jar</strong> - Pathname of the
            Digester package JAR file from the Jakarta Commons project.</li>
        <li><strong>commons-fileupload.jar</strong> - Pathname of the
            Fileupload package JAR file from the Jakarta Commons project.</li>
        <li><strong>commons-lang.jar</strong> - Pathname of the
            Lang package JAR file from the Jakarta Commons project.</li>
        <li><strong>commons-logging.jar</strong> - Pathname of the
            Logging package JAR file from the Jakarta Commons project.</li>
        <li><strong>commons-validator.jar</strong> - Pathname of the
            Validator package JAR file from the Jakarta Commons project.</li>
        <li><strong>servletapi.home</strong> - Pathname to the directory of
            your binary distribution of the Servlet API classes.</li>
        <li><strong>tomcat.home</strong> - Pathname to the directory of your
            binary distribution of Tomcat 3.2 (required only if you wish to
            use the <code>deploy.tomcat</code> target).</li>
        <li><strong>xerces.home</strong> - Pathname to the directory of your
            binary distribution of the Xerces parser, version 1.2 or 1.3
            (required only if you wish to use the <code>deploy.catalina</code>
            target).</li>
        </ul></li>


   <li>If you are a Struts developer with write access to the CVS repository,
        be sure that you do <strong>NOT</strong> check in a copy of the
        <code>build.properties</code> file, since it will be different for
        each individual developer.</li>
    </ul>

    <p>To build a "distribution" version of Struts, first change your current
    directory to the directory in which you have unpacked the Struts
    source distribution, and (if necessary) create or customize the
    <code>build.properties</code> file as described above.  Then, type:</p>
<pre>
        ant dist
</pre>

    <p>This command will create a binary distribution of Struts, in a
    directory named <code>dist</code> (relative to where you
    are compiling from).  This directory contains an exact replica of the
    files included in a binary distribution of Struts, as described
    in the <a href="#Installing">preceding section</a>.</p>

    <p>IMPORTANT NOTE: The <code>struts.jar</code>, as well as the JAR files
    from the Jakarta Commons project, must be in your classpath when
    compiling Struts. The <code>build.xml</code> provided does this
    automatically.  If you use your development machine to test Struts
    application locally, be sure that the <code>struts.jar</code> is
    <strong>NOT</strong> on your classpath when your container is running.
    </p>

  </section>

<section>
    <p class="right">
    Next: <a href="../faqs/index.html">FAQs and HowTos</a>
    </p>
</section>

  </chapter>
</body>
</document>
