/**
* Copyright (c) 2011-2017, James Zhan 詹波 (jfinal@126.com).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.jfinal.server;
import java.io.File;
import java.io.IOException;
import java.net.DatagramSocket;
import java.net.ServerSocket;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.SessionManager;
import org.eclipse.jetty.server.nio.SelectChannelConnector;
import org.eclipse.jetty.server.session.HashSessionManager;
import org.eclipse.jetty.server.session.SessionHandler;
import org.eclipse.jetty.webapp.WebAppContext;
import com.jfinal.core.Const;
import com.jfinal.kit.FileKit;
import com.jfinal.kit.LogKit;
import com.jfinal.kit.PathKit;
import com.jfinal.kit.StrKit;
/**
* IDEA 专用于在 IDEA 之下用 main 方法启动，原启动方式在 IDEA 下会报异常
* 注意：用此方法启动对热加载支持不完全，只支持方法内部修改的热加载，不支持添加、删除方法
* 不支持添加类文件热加载，建议开发者在 IDEA 下使用 jrebel 或者 maven 下的 jetty
* 插件支持列为完全的热加载
*/
public class JettyServerForIDEA implements IServer {
private String webAppDir;
private int port;
private String context;
// private int scanIntervalSeconds;
private boolean running = false;
private Server server;
private WebAppContext webApp;
public JettyServerForIDEA(String webAppDir, int port, String context) {
if (webAppDir == null) {
throw new IllegalStateException("Invalid webAppDir of web server: " + webAppDir);
}
if (port < 0 || port > 65535) {
throw new IllegalArgumentException("Invalid port of web server: " + port);
}
if (StrKit.isBlank(context)) {
throw new IllegalStateException("Invalid context of web server: " + context);
}
this.webAppDir = webAppDir;
this.port = port;
this.context = context;
// this.scanIntervalSeconds = scanIntervalSeconds;
}
public void start() {
if (!running) {
try {
running = true;
doStart();
} catch (Exception e) {
System.err.println(e.getMessage());
LogKit.error(e.getMessage(), e);
}
}
}
public void stop() {
if (running) {
try {server.stop();} catch (Exception e) {LogKit.error(e.getMessage(), e);}
running = false;
}
}
private void doStart() {
if (!available(port)) {
throw new IllegalStateException("port: " + port + " already in use!");
}
deleteSessionData();
System.out.println("Starting JFinal " + Const.JFINAL_VERSION);
server = new Server();
SelectChannelConnector connector = new SelectChannelConnector();
connector.setPort(port);
server.addConnector(connector);
webApp = new WebAppContext();
webApp.setThrowUnavailableOnStartupException(true); // 在启动过程中允许抛出异常终止启动并退出 JVM
webApp.setContextPath(context);
webApp.setResourceBase(webAppDir); // webApp.setWar(webAppDir);
webApp.setInitParameter("org.eclipse.jetty.servlet.Default.dirAllowed", "false");
webApp.setInitParameter("org.eclipse.jetty.servlet.Default.useFileMappedBuffer", "false"); // webApp.setInitParams(Collections.singletonMap("org.mortbay.jetty.servlet.Default.useFileMappedBuffer", "false"));
persistSession(webApp);
server.setHandler(webApp);
// changeClassLoader(webApp);
// configureScanner
// if (scanIntervalSeconds > 0) {
// Scanner scanner = new Scanner(PathKit.getRootClassPath(), scanIntervalSeconds) {
// public void onChange() {
// try {
// System.err.println("\nLoading changes ......");
// webApp.stop();
// JFinalClassLoader loader = new JFinalClassLoader(webApp, getClassPath());
// webApp.setClassLoader(loader);
// webApp.start();
// System.err.println("Loading complete.");
// } catch (Exception e) {
// System.err.println("Error reconfiguring/restarting webapp after change in watched files");
// LogKit.error(e.getMessage(), e);
// }
// }
// };
// System.out.println("Starting scanner at interval of " + scanIntervalSeconds + " seconds.");
// scanner.start();
// }
try {
System.out.println("Starting web server on port: " + port);
server.start();
System.out.println("Starting Complete. Welcome To The JFinal World :)");
server.join();
} catch (Exception e) {
LogKit.error(e.getMessage(), e);
System.exit(100);
}
return;
}
// private void changeClassLoader(WebAppContext webApp) {
// try {
// String classPath = getClassPath();
// JFinalClassLoader jfcl = new JFinalClassLoader(webApp, classPath);
// // jfcl.addClassPath(classPath);
// webApp.setClassLoader(jfcl);
// } catch (IOException e) {
// LogKit.error(e.getMessage(), e);
// }
// }
// private String getClassPath() {
// return System.getProperty("java.class.path");
// }
private void deleteSessionData() {
try {
FileKit.delete(new File(getStoreDir()));
}
catch (Exception e) {
LogKit.logNothing(e);
}
}
private String getStoreDir() {
String storeDir = PathKit.getWebRootPath() + "/../../session_data" + context;
if ("\\".equals(File.separator)) {
storeDir = storeDir.replaceAll("/", "\\\\");
}
return storeDir;
}
private void persistSession(WebAppContext webApp) {
String storeDir = getStoreDir();
SessionManager sm = webApp.getSessionHandler().getSessionManager();
if (sm instanceof HashSessionManager) {
((HashSessionManager)sm).setStoreDirectory(new File(storeDir));
return ;
}
HashSessionManager hsm = new HashSessionManager();
hsm.setStoreDirectory(new File(storeDir));
SessionHandler sh = new SessionHandler();
sh.setSessionManager(hsm);
webApp.setSessionHandler(sh);
}
private static boolean available(int port) {
if (port <= 0) {
throw new IllegalArgumentException("Invalid start port: " + port);
}
ServerSocket ss = null;
DatagramSocket ds = null;
try {
ss = new ServerSocket(port);
ss.setReuseAddress(true);
ds = new DatagramSocket(port);
ds.setReuseAddress(true);
return true;
} catch (IOException e) {
LogKit.logNothing(e);
} finally {
if (ds != null) {
ds.close();
}
if (ss != null) {
try {
ss.close();
} catch (IOException e) {
// should not be thrown, just detect port available.
LogKit.logNothing(e);
}
}
}
return false;
}
}