jetty 9 嵌入式开发示例

jetty 9 嵌入应用程序后，小型的web应用直接打成一个单独的jar包，就可以直接运行，非常适合做Demo演示或云端集群部署。

主要代码：

JettyServer的封装类

 package yjmyzz.jetty.demo.server;

 import org.eclipse.jetty.server.*;
 import org.eclipse.jetty.server.handler.HandlerCollection;
 import org.eclipse.jetty.server.handler.RequestLogHandler;
 import org.eclipse.jetty.server.handler.gzip.GzipHandler;
 import org.eclipse.jetty.util.thread.QueuedThreadPool;
 import org.eclipse.jetty.util.thread.ThreadPool;
 import org.eclipse.jetty.webapp.WebAppContext;
 import org.slf4j.LoggerFactory;

 import java.io.File;

 public class JettyWebServer {

     private static org.slf4j.Logger logger = LoggerFactory.getLogger(JettyWebServer.class);

     private Server server;
     private int port;
     private String host;
     private String tempDir;
     private String logDir;
     private String webDir;
     private String contextPath;

     public JettyWebServer(int port, String host, String tempDir, String webDir, String logDir, String contextPath) {

         logger.info("port:{},host:{},tempDir:{},webDir:{},logDir:{},contextPath:{}", port, host, tempDir, webDir, logDir, contextPath);

         this.port = port;
         this.host = host;
         this.tempDir = tempDir;
         this.webDir = webDir;
         this.contextPath = contextPath;
         this.logDir = logDir;
     }

     public void start() throws Exception {
         server = new Server(createThreadPool());
         server.addConnector(createConnector());
         server.setHandler(createHandlers());
         server.setStopAtShutdown(true);
         server.start();
     }

     public void join() throws InterruptedException {
         server.join();
     }

     private ThreadPool createThreadPool() {
         QueuedThreadPool threadPool = new QueuedThreadPool();
         threadPool.setMinThreads(10);
         threadPool.setMaxThreads(100);
         return threadPool;
     }

     private NetworkConnector createConnector() {
         ServerConnector connector = new ServerConnector(server);
         connector.setPort(port);
         connector.setHost(host);
         return connector;
     }

     private HandlerCollection createHandlers() {
         WebAppContext context = new WebAppContext();
         context.setContextPath(contextPath);
         context.setWar(webDir);
         context.setTempDirectory(new File(tempDir));

         RequestLogHandler logHandler = new RequestLogHandler();
         logHandler.setRequestLog(createRequestLog());
         GzipHandler gzipHandler = new GzipHandler();
         HandlerCollection handlerCollection = new HandlerCollection();
         handlerCollection.setHandlers(new Handler[]{context, logHandler, gzipHandler});
         return handlerCollection;
     }

     private RequestLog createRequestLog() {
         //记录访问日志的处理
         NCSARequestLog requestLog = new NCSARequestLog();
         requestLog.setFilename(logDir + "/yyyy-mm-dd.log");
         requestLog.setRetainDays(90);
         requestLog.setExtended(false);
         requestLog.setAppend(true);
         //requestLog.setLogTimeZone("GMT");
         requestLog.setLogTimeZone("Asia/Shanghai");
         requestLog.setLogDateFormat("yyyy-MM-dd HH:mm:ss SSS");
         requestLog.setLogLatency(true);
         return requestLog;
     }

 }

启动代码示例：

 package yjmyzz.jetty.demo.main;

 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.util.StringUtils;
 import yjmyzz.jetty.demo.server.JettyWebServer;
 import yjmyzz.jetty.demo.util.FileUtil;
 import yjmyzz.jetty.demo.util.JarUtils;

 import java.util.HashMap;
 import java.util.Map;

 public class JettyApp {

     private static final String PORT = "port";
     private static final String WEB_DIR = "web";
     private static final String LOG_DIR = "log";
     private static final String TEMP_DIR = "temp";
     private static final String CONTEXT_PATH = "context";
     private static final String HOST = "host";
     private static final Map<String, String> param = new HashMap<>();
     private static Logger logger = LoggerFactory.getLogger(JettyWebServer.class);

     public static void main(String... anArgs) throws Exception {

         if (anArgs.length == 0) {
             param.put(PORT, "8080");
             param.put(WEB_DIR, "web");
             param.put(LOG_DIR, "logs");
             param.put(TEMP_DIR, "temp");
             param.put(CONTEXT_PATH, "/demo");
             param.put(HOST, "localhost");
         }

         for (String arg : anArgs) {
             System.out.println(arg);
             if (!StringUtils.isEmpty(arg) && arg.contains("=")) {
                 String[] t = arg.trim().split("=");
                 param.put(t[0], t[1]);
             }
         }

         initParam();

         unzipSelf();

         new JettyApp().start();
     }

     private static void initParam() {

         String logDir = FileUtil.currentWorkDir + param.get(LOG_DIR);
         String tempDir = FileUtil.currentWorkDir + param.get(TEMP_DIR);
         String webDir = FileUtil.currentWorkDir + param.get(WEB_DIR);

         logger.debug(logDir);
         logger.debug(tempDir);
         logger.debug(webDir);

         String temp = "x.x";//占位
         FileUtil.createDirs(logDir + "/" + temp);
         FileUtil.createDirs(tempDir + "/" + temp);
         FileUtil.createDirs(webDir + "/" + temp);

         param.put(LOG_DIR, logDir);
         param.put(TEMP_DIR, tempDir);
         param.put(WEB_DIR, webDir);
     }

     private JettyWebServer server;

     public JettyApp() {
         server = new JettyWebServer(
                 Integer.parseInt(param.get(PORT).toString()),
                 param.get(HOST),
                 param.get(TEMP_DIR),
                 param.get(WEB_DIR),
                 param.get(LOG_DIR),
                 param.get(CONTEXT_PATH));
     }

     public void start() throws Exception {
         server.start();
         server.join();
     }

     private static void unzipSelf() {
         //将jar自身解压

         String selfPath = FileUtil.getJarExecPath(JettyApp.class);
         if (selfPath.endsWith(".jar")) {
             // 运行环境
             try {
                 logger.info("正在将\n" + selfPath + "\n解压至\n" + param.get(WEB_DIR));
                 JarUtils.unJar(selfPath, param.get(WEB_DIR));
             } catch (Exception e) {
                 logger.error("解压web内容失败!", e);
             }
         } else {
             // IDE环境
             param.put(WEB_DIR, selfPath);
         }
         logger.info(selfPath);
     }
 }

我在github上开源了一个jetty9 + spring mvc4 + velocity2的示例项目，地址：https://github.com/yjmyzz/jetty-embed-demo