📄 pja-install.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"><html><head><title>Jive Forums 3 - PJA documentation</title> <style type="text/css"> BODY, TD, P, UL, OL, LI, .header, .subheader { font-family : arial,helvetica,sans-serif; font-size : 90%; } TT, CODE, PRE { font-size : 9pt; color : #009900; font-weight : bold; } .header { font-size : 110%; font-weight : bold; } .subheader { font-weight : bold; } </style></head><body><span class="header">Jive Forums 3 - PJA Documentation</span><hr size="0"><p>In UNIX, Java requires the use of the display to create images. This is alimitation of the Java AWT libraries that is fixed in the new JDK 1.4 release.Until then there are two possible solutions for applications such asJive Forums, which run in a Java application server. It is possible to set the<tt>DISPLAY</tt> environment variable and have a writeable display that Java canuse. However, this is not a good solution for most servers as it createssecurity problems and is an ungainly solution at best. The solution we recommendis the use of a toolkit such as PJA (Pure Java AWT).</p><p>Before you attempt to install PJA, please run the Server-Side Graphics Capabilitytest on the Report Configuration page of the Jive Forums Admin tool. This testwill determine if you need to install PJA.</p><span class="subheader">General Java Setup</span><p>To use PJA, you'll first need to download the latest release from<a href="http://www.eteks.com/pja/en/" target="_new">http://www.eteks.com/pja/en/</a>.For purposes of this example installation, we'll assume you have Java installedin <tt>/opt/java</tt> and an application serverinstalled in <tt>/opt/<appServer></tt>.</p><ol> <li>Extract the <tt>pja_2.4.zip</tt> file. <li>Locate the pja.jar file in the newly created directory <tt>pja_2.4/lib</tt> <li>Copy pja.jar to a usable location (we'll use <tt>/opt/<appServer>/lib</tt> for this example)</ol><p>To add the <tt>pja.jar</tt> file to your "bootclasspath" directoryyou will need to set three Java system properties that will allow yourapplication server's Java instance to find and use PJA properly. If you wishto set these options on the command line as arguments to the java executable,it would look like the following (ignore the backslashes, they are there torepresent that the newline is irrelevant):</p><pre>java -Xbootclasspath/a:/opt/<appServer>/lib/pja.jar \ -Dawt.toolkit=com.eteks.awt.PJAToolkit \ -Djava.awt.fonts=/opt/java/jre/lib/fonts \ -Djava.awt.graphicsenv=com.eteks.java2d.PJAGraphicsEnvironment</pre><span class="subheader">Specific Application Server Setup</span><p><i>Resin</i></p><ul> For this example, we'll assume you have Resin installed at <tt>/opt/resin</tt>. With Resin, the application server is started using a command line program. The arguments above can be added to our command line, however resin requires you to prepend each argument with a "-J" that specifies that the argument should be passed to Java directly. An example Resin command line could look like this: <pre> /opt/resin/bin/httpd.sh start -J-Xbootclasspath/a:/opt/resin/lib/pja.jar \ -J-Dawt.toolkit=com.eteks.awt.PJAToolkit \ -J-Djava.awt.fonts=/opt/java/jre/lib/fonts \ -J-Djava.awt.graphicsenv=com.eteks.java2d.PJAGraphicsEnvironment </pre></ul><p><i>Tomcat 4.x</i></p><ul> In Tomcat 4, setup is easy to do. In the <tt>tomcat4.conf</tt> file, simply add a line that looks like this (it is assumed Tomcat is installed at <tt>/opt/tomcat4</tt>): <p> <pre> CATALINA_OPTS="$JAVA_HOME/bin/java -Xbootclasspath/a:/opt/tomcat4/lib/pja.jar \ -Dawt.toolkit=com.eteks.awt.PJAToolkit \ -Djava.awt.fonts=/opt/java/jre/lib/fonts \ -Djava.awt.graphicsenv=com.eteks.java2d.PJAGraphicsEnvironment" </pre></ul><p>Under other application servers these setting can be made from GUI configurationtools. In JRun, for instance, you are given a web based administration page.Under the "Java Settings" section you are allowed to add Java arguments.That is where you'd want to put the arguments described above.</p><p>If you've followed all the documentation above and have problems, pleasepost a support question in the<a href="http://www.jivesoftware.com/jive/" target="_new">Jive Software Support Forums</a>.</p></body></html>⌨️ 快捷键说明
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