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com.anysoft.webloader.DefaultWebXMLLoader Maven / Gradle / Ivy
package com.anysoft.webloader;
import java.util.EnumSet;
import javax.servlet.DispatcherType;
import javax.servlet.FilterRegistration;
import javax.servlet.ServletContext;
import javax.servlet.ServletRegistration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import com.anysoft.util.Properties;
import com.anysoft.util.PropertiesConstants;
import com.anysoft.util.XmlElementProperties;
import com.anysoft.util.XmlTools;
/**
* 缺省的WebXMLLoader
*
* @author duanyy
*
* @since 1.6.0.0
*
* @version 1.6.0.6 [20141116 duanyy] dispatcher = getDispatcher(_dispatcher);
String urlPattern = ((Element)_n).getAttribute("url-pattern");
if (urlPattern != null && urlPattern.length() > 0){
//url-pattern
filter.addMappingForUrlPatterns(dispatcher, true, urlPattern);
logger.info("Add filter mapping:" + urlPattern);
}else{
String servletName = ((Element)_n).getAttribute("servlet-name");
if (servletName != null && servletName.length() > 0){
//servlet-name
filter.addMappingForServletNames(dispatcher, true, servletName);
logger.info("Add filter mapping:" + servletName);
}
}
}
}
}
logger.info("Succeeded in adding servlet:" + filterName + "/" + filterClazz);
}catch (Exception ex){
logger.error("Failed to add servlet:" + filterName + "/" + filterClazz);
}
}
}
private static EnumSet getDispatcher(String _dispatcher) {
EnumSet result = null;
if (_dispatcher != null && _dispatcher.length() > 0){
result = EnumSet.noneOf(DispatcherType.class);
String [] _dispatchers = _dispatcher.split("[:]");
if (_dispatchers != null && _dispatchers.length > 0){
for (int i = 0 ;i < _dispatchers.length ; i ++){
String _e = _dispatchers[i];
if (_e == null || _e.length() <= 0){
continue;
}
try {
DispatcherType dt = DispatcherType.valueOf(_e.toUpperCase());
if (dt != null){
result.add(dt);
}
}catch (Exception ex){
logger.error("Can not parse the dispatcher type : " + _e);
}
}
}
if (result.isEmpty()){
result.add(DispatcherType.REQUEST);
}
}else{
result = EnumSet.of(DispatcherType.REQUEST);
}
return result;
}
/**
* 装入servlet，可依次装入多个，路径为/servlet
*
* @param settings
* @param root
* @param sc
*/
protected void loadServlets(Properties settings,Element root, ServletContext sc) {
NodeList _servlets = XmlTools.getNodeListByPath(root, "servlet");
if (_servlets != null && _servlets.getLength() > 0){
for (int i = 0 ; i < _servlets.getLength() ; i ++){
Node n = _servlets.item(i);
if (n.getNodeType() != Node.ELEMENT_NODE){
continue;
}
loadServlet(settings,(Element)n,sc);
}
}
}
/**
* 将指定节点的内容作为servlet装入
* @param settings
* @param n
* @param sc
*/
protected void loadServlet(Properties settings,Element n, ServletContext sc) {
Properties p = new XmlElementProperties(n,settings);
String servletName = PropertiesConstants.getString(p,"servlet-name","",true);
String servletClazz = PropertiesConstants.getString(p,"servlet-class","",true);
if (servletName != null && servletName.length() > 0 && servletClazz != null && servletClazz.length() > 0){
try {
logger.info("Servlet is found:" + servletName + "/" + servletClazz);
ServletRegistration.Dynamic servlet = sc.addServlet(servletName, servletClazz);
//loadOnStartup
servlet.setLoadOnStartup(PropertiesConstants.getInt(p, "load-on-startup",1));
//async-supported
servlet.setAsyncSupported(PropertiesConstants.getBoolean(p, "async-supported", false));
//init-parameters
{
NodeList _params = XmlTools.getNodeListByPath(n, "init-param");
if (_params != null && _params.getLength() > 0){
for (int i = 0 ; i < _params.getLength() ; i ++){
Node _n = _params.item(i);
if (n.getNodeType() != Node.ELEMENT_NODE){
continue;
}
Element _e = (Element)_n;
String name = _e.getAttribute("param-name");
String value = _e.getAttribute("param-value");
if (name != null && value != null && name.length() > 0 && value.length() > 0){
String _value = settings.transform(value);
logger.info("Add servlet parameter:" + name + "=" + _value);
servlet.setInitParameter(name, _value);
}
}
}
}
//mappings
{
NodeList _mappings = XmlTools.getNodeListByPath(n, "servlet-mapping");
if (_mappings != null && _mappings.getLength() > 0){
for (int i = 0 ;i < _mappings.getLength() ; i ++){
Node _n = _mappings.item(i);
if (_n.getNodeType() != Node.ELEMENT_NODE){
continue;
}
String mapping = ((Element)_n).getAttribute("url-pattern");
if (mapping != null && mapping.length() > 0){
String _mapping = p.transform(mapping);
servlet.addMapping(_mapping);
logger.info("add servlet mapping:" + _mapping);
}
}
}
}
logger.info("Succeeded in adding servlet:" + servletName + "/" + servletClazz);
}catch (Exception ex){
logger.error("Failed to add servlet:" + servletName + "/" + servletClazz);
}
}
}
}
