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75 lines
3.1 KiB
75 lines
3.1 KiB
package org.airsonic.player.spring;
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import org.airsonic.player.service.SettingsService;
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import org.airsonic.player.spring.webxmldomain.ServletDef;
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import org.airsonic.player.spring.webxmldomain.ServletMappingDef;
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import org.airsonic.player.spring.webxmldomain.WebApp;
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import org.apache.commons.io.IOUtils;
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import org.apache.cxf.jaxb.JAXBDataBinding;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.boot.web.servlet.ServletContextInitializer;
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import org.springframework.stereotype.Component;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletRegistration;
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import javax.xml.bind.JAXBContext;
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import javax.xml.bind.JAXBException;
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import javax.xml.bind.Unmarshaller;
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import java.io.InputStream;
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import java.io.SequenceInputStream;
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import java.nio.charset.Charset;
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@Component
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public class RegisterPrecompiledJSPInitializer implements ServletContextInitializer {
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private static final Logger LOG = LoggerFactory.getLogger(RegisterPrecompiledJSPInitializer.class);
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@Override
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public void onStartup(ServletContext servletContext) {
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if (SettingsService.isDevelopmentMode()) {
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LOG.debug("Not registering precompiled jsps");
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} else {
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LOG.debug("Registering precompiled jsps");
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registerPrecompiledJSPs(servletContext);
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}
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}
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private static void registerPrecompiledJSPs(ServletContext servletContext) {
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WebApp webApp = parseXmlFragment();
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for (ServletDef def : webApp.getServletDefs()) {
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LOG.trace("Registering precompiled JSP: {} -> {}", def.getName(), def.getSclass());
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ServletRegistration.Dynamic reg = servletContext.addServlet(def.getName(), def.getSclass());
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// Need to set loadOnStartup somewhere between 0 and 128. 0 is highest priority. 99 should be fine
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reg.setLoadOnStartup(99);
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}
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for (ServletMappingDef mapping : webApp.getServletMappingDefs()) {
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LOG.trace("Mapping servlet: {} -> {}", mapping.getName(), mapping.getUrlPattern());
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servletContext.getServletRegistration(mapping.getName()).addMapping(mapping.getUrlPattern());
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}
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}
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private static WebApp parseXmlFragment() {
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InputStream precompiledJspWebXml = RegisterPrecompiledJSPInitializer.class.getResourceAsStream("/precompiled-jsp-web.xml");
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InputStream webXmlIS = new SequenceInputStream(
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new SequenceInputStream(
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IOUtils.toInputStream("<web-app>", Charset.defaultCharset()),
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precompiledJspWebXml),
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IOUtils.toInputStream("</web-app>", Charset.defaultCharset()));
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try {
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JAXBContext jaxbContext = new JAXBDataBinding(WebApp.class).getContext();
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Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
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WebApp webapp = (WebApp) unmarshaller.unmarshal(webXmlIS);
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try {
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webXmlIS.close();
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} catch (java.io.IOException ignored) {}
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return webapp;
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} catch (JAXBException e) {
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throw new RuntimeException("Could not parse precompiled-jsp-web.xml", e);
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}
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}
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}
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