[Java][Liferay] 解决Liferay ext项目deploy的问题

Liferay ext project在install war包之后需要重启服务器，重启服务器中会执行ExtHotDeployListener中的逻辑，这里有一个坑，如果是第二次以后install ext war包，会发现新修改的文件不起作用，原因如下

ExtHotDeployListener.java



    protected void doInvokeDeploy(HotDeployEvent hotDeployEvent)

        throws Exception {

        ServletContext servletContext = hotDeployEvent.getServletContext();

        String servletContextName = servletContext.getServletContextName();

        if (_log.isDebugEnabled()) {

            _log.debug("Invoking deploy for " + servletContextName);

        }

        String xml = HttpUtil.URLtoString(

            servletContext.getResource(

                "/WEB-INF/ext-" + servletContextName + ".xml"));

        if (xml == null) {

            return;

        }

        if (_log.isInfoEnabled()) {

            _log.info(

                "Registering extension environment for " + servletContextName);

        }

        /*

        * Ext 项目在重启tomcat的时候会checkd liferay-portal/tomcat-xxx/webapps/ROOT/WEB-INF/ext-project-***-ext.xml是否存在

        * 如果存在，就不执行后面的逻辑，也就不会执行installExt(***)，那么也不会重新拷贝替换的文件

        *

        */

        if (ExtRegistry.isRegistered(servletContextName)) {

            if (_log.isInfoEnabled()) {

                _log.info(

                    "Extension environment for " + servletContextName +

                        " has been applied.");

            }

            return;

        }

        Map<String, Set<String>> conflicts = ExtRegistry.getConflicts(

            servletContext);

        if (!conflicts.isEmpty()) {

            StringBundler sb = new StringBundler();

            sb.append(

                "Extension environment for " + servletContextName +

                    " cannot be applied because of detected conflicts:");

            for (Map.Entry<String, Set<String>> entry : conflicts.entrySet()) {

                String conflictServletContextName = entry.getKey();

                Set<String> conflictFiles = entry.getValue();

                sb.append("\n\t");

                sb.append(conflictServletContextName);

                sb.append(":");

                for (String conflictFile : conflictFiles) {

                    sb.append("\n\t\t");

                    sb.append(conflictFile);

                }

            }

            _log.error(sb.toString());

            return;

        }

        installExt(servletContext, hotDeployEvent.getContextClassLoader());

        FileAvailabilityUtil.reset();

        if (_log.isInfoEnabled()) {

            _log.info(

                "Extension environment for " + servletContextName +

                    " has been applied. You must reboot the server and " +

                        "redeploy all other plugins.");

        }

    }

xxx-ext.xml格式如下



<ext-info>

	<servlet-context-name>hsf-plugins-shared-ext</servlet-context-name>

	<files>

		<file>xxxx-ext.xml</file>

		<file>ext-impl/classes/com/liferay/portal/action/xxx.class</file>

                ....

		<file>ext-web/docroot/html/js/xxx.js</file>

		<file>web.xml</file>

	</files>

</ext-info>

解决方案

1>. 去除掉doInvokeDeploy中这段逻辑，不管是否包含ext-project-***-ext.xml都执行install



if (ExtRegistry.isRegistered(servletContextName)) {

    if (_log.isInfoEnabled()) {

        _log.info(

            "Extension environment for " + servletContextName +

                " has been applied.");

    }

    return;

}

2>. 在第二次install ext project war包之后需要删除liferay-portal/tomcat-xxx/webapps/ROOT/WEB-INF/ext-project-***-ext.xml，然后重启tomcat

巴特西

[Java][Liferay] 解决Liferay ext项目deploy的问题

xxx-ext.xml格式如下

解决方案

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