嵌入式tomcat经典示例

嵌入式tomcat经典示例
（由网友--开源狂人提供）

package org.demo.common;

import org.hzy.demo.core.TomcatServer;
public class WebStart {
	public static void main(String[] args) throws Exception {
		/*
		 *  Server server = new Server();
		 * SelectChannelConnector connector = new SelectChannelConnector();
		 * connector.setAcceptQueueSize(8); connector.setPort(80);
		 * server.setConnectors(new Connector[] { connector }); Context context =
		 * new WebAppContext("./WebRoot", "/"); server.addHandler(context);
		 * server.start(); server.join();
		 */
		 new TomcatServer().start();
	}

package org.hzy.demo.core;

import org.apache.catalina.Context;
import org.apache.catalina.Engine;
import org.apache.catalina.Host;
import org.apache.catalina.connector.Connector;
import org.apache.catalina.startup.Embedded;


public abstract class  BaseWebServerEmbed{
	private static final int DEFAULT_PORT = 80;
	private Embedded tomcat;

	protected BaseWebServerEmbed() {
		initEmbedded();
		initShutdownHook();
	}

	protected abstract String[] getContextsAbsolutePath();

	protected abstract String[] getContextsMappingPath();

	protected abstract String getTomcatPath();

	protected int getPort() {
		return DEFAULT_PORT;
	}

	public void start() {
		try {
			long startTime = System.currentTimeMillis();
			tomcat.start();
			System.err.println("Embedded Tomcat started in "
					+ (System.currentTimeMillis() - startTime) + " ms.");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private void initEmbedded() {
		tomcat = new Embedded();
		tomcat.setCatalinaBase(getTomcatPath());

		Host host = tomcat.createHost("127.0.0.1", tomcat.getCatalinaHome()
				+ "/webapps");
		String[] contexts = getContextsMappingPath();
		String[] contextsPath = getContextsAbsolutePath();
		Context context = null;

		for (int i = 0; i < contexts.length; ++i) {
			context = tomcat.createContext(contexts[i], contextsPath[i]);
			host.addChild(context);
		}

		Engine engine = tomcat.createEngine();
		engine.setName("WEB_SERVER");
		engine.addChild(host);
		engine.setDefaultHost(host.getName());

		tomcat.addEngine(engine);
		// 只能本机访问
		//Connector connector = tomcat.createConnector("127.0.0.1", getPort(),false);
		// 可从其它机器访问
		Connector connector = tomcat.createConnector((java.net.InetAddress) null, getPort(), false);
		connector.setURIEncoding("UTF-8");
		tomcat.addConnector(connector);
	}

	private void initShutdownHook() {
		Runtime.getRuntime().addShutdownHook(new Thread() {
			public void run() {
				stopTomcat();
			}
		});
	}

	private void stopTomcat() {
		try {
			tomcat.stop();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}

package org.hzy.demo.core;



public class TomcatServer extends BaseWebServerEmbed {

	protected String[] getContextsAbsolutePath() {
		return new String[] { getSingleContextAbsolutePath() };
	}

	private String getSingleContextAbsolutePath() {
		String path = System.getProperty("user.dir") + "/WebRoot";
		return path;
	}

	protected String[] getContextsMappingPath() {
		return new String[] { "/" };
	}

	protected String getTomcatPath() {
		try {
			return System.getProperty("user.dir") + "/webserver";
		} catch (Exception e) {
			return "/D:\\tomcat-embed";
		}
	}

}