Tomcat 系統架構與設計模式，第 1 部分: 工作原理圖 1.Tomcat 的總體結構
public synchronized void start() throwsLifecycleException {
………
if( !initialized ) {
try {
init();
} catch( Exception ex ) {
throw newLifecycleException("Error initializaing ", ex);
}
}
………
lifecycle.fireLifecycleEvent(BEFORE_START_EVENT, null);
setAvailable(false);
setConfigured(false);
boolean ok = true;
File configBase = getConfigBase();
if (configBase != null) {
if (getConfigFile() == null) {
File file = new File(configBase, getDefaultConfigFile());
setConfigFile(file.getPath());
try {
File appBaseFile = new File(getAppBase());
if (!appBaseFile.isAbsolute()){
appBaseFile = newFile(engineBase(), getAppBase());
}
String appBase =appBaseFile.getCanonicalPath();
String basePath =
(newFile(getBasePath())).getCanonicalPath();
if(!basePath.startsWith(appBase)) {
Server server =ServerFactory.getServer();
((StandardServer)server).storeContext(this);
}
} catch (Exception e) {
log.warn("Error storingconfig file", e);
}
} else {
try {
String canConfigFile = (newFile(getConfigFile())).getCanonicalPath();
if (!canConfigFile.startsWith(configBase.getCanonicalPath())) {
File file = newFile(configBase, getDefaultConfigFile());
if (copy(newFile(canConfigFile), file)) {
setConfigFile(file.getPath());
}
}
} catch (Exception e) {
log.warn("Error settingconfig file", e);
}
}
}
………
Container children[] = findChildren();
for (int i = 0; i < children.length; i++) {
if (children[i] instanceof Lifecycle)
((Lifecycle) children[i]).start();
}
if(pipeline instanceof Lifecycle)
((Lifecycle) pipeline).start();
………
}