Jakarta Servlet 5.0 初期化時の例外

JakartaServlet5

f:id:bau1537:20210925143925j:plain

  • Jakarta Servlet 5 のライフサイクル中における例外について
  • 例外の種類はぱっと見 ServletException と UnavailableException の2つがある
    • ServletException を継承しているのが UnavailableException
  ServletException
         ▲
         │
         │
         │
         │
UnavailableException
$ java -jar $JETTY_HOME/start.jar --version 
Jetty Server Classpath:
-----------------------
Version Information on 22 entries in the classpath.
Note: order presented here is how they would appear on the classpath.
      changes to the --module=name command line options will be reflected here.
 0:                    (dir) | ${jetty.base}/resources
 1:             2.0.0-alpha1 | ${jetty.home}/lib/logging/slf4j-api-2.0.0-alpha1.jar
 2:                   11.0.6 | ${jetty.home}/lib/logging/jetty-slf4j-impl-11.0.6.jar
 3:                    5.0.2 | ${jetty.home}/lib/jetty-jakarta-servlet-api-5.0.2.jar
 4:                   11.0.6 | ${jetty.home}/lib/jetty-http-11.0.6.jar
 5:                   11.0.6 | ${jetty.home}/lib/jetty-server-11.0.6.jar
 6:                   11.0.6 | ${jetty.home}/lib/jetty-xml-11.0.6.jar
 7:                   11.0.6 | ${jetty.home}/lib/jetty-util-11.0.6.jar
 8:                   11.0.6 | ${jetty.home}/lib/jetty-io-11.0.6.jar
 9:                   11.0.6 | ${jetty.home}/lib/jetty-jndi-11.0.6.jar
10:                   11.0.6 | ${jetty.home}/lib/jetty-security-11.0.6.jar
11:                   11.0.6 | ${jetty.home}/lib/jetty-servlet-11.0.6.jar
12:                   11.0.6 | ${jetty.home}/lib/jetty-webapp-11.0.6.jar
13:                   11.0.6 | ${jetty.home}/lib/jetty-plus-11.0.6.jar
14:                    2.0.0 | ${jetty.home}/lib/jakarta.transaction-api-2.0.0.jar
15:                   11.0.6 | ${jetty.home}/lib/jetty-annotations-11.0.6.jar
16:                      9.1 | ${jetty.home}/lib/annotations/asm-9.1.jar
17:                      9.1 | ${jetty.home}/lib/annotations/asm-analysis-9.1.jar
18:                      9.1 | ${jetty.home}/lib/annotations/asm-commons-9.1.jar
19:                      9.1 | ${jetty.home}/lib/annotations/asm-tree-9.1.jar
20:                    2.0.0 | ${jetty.home}/lib/annotations/jakarta.annotation-api-2.0.0.jar
21:                   11.0.6 | ${jetty.home}/lib/jetty-deploy-11.0.6.jar
  • プロジェクト構成
.
├── pom.xml
└── src
    └── main
        └── java
            └── org
                └── example
                    └── servlet
                        └── DemoServlet.java

6 directories, 2 files
  • pom
<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>servlet</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>Servlet Maven Webapp</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>jakarta.servlet</groupId>
            <artifactId>jakarta.servlet-api</artifactId>
            <version>5.0.0</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.2.2</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>
  • DemoServlet.java
    • ServletException をスローする
package org.example.servlet;

import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import java.io.IOException;
import java.io.PrintWriter;

@WebServlet(urlPatterns = "/")
public class DemoServlet extends HttpServlet {

    @Override
    public void init() throws ServletException {
        log("Servlet init");
        throw new ServletException("demo exception");
    }

    @Override
    public void destroy() {
        log("Servlet destroy");
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        log("Servlet handle get request");
        PrintWriter writer = resp.getWriter();
        writer.write("hello from Jakarta Servlet 5");
    }

}
  • 起動すると以下のログが出力される
  • リクエストを投げても 404 が返ってくるようになる
  • ログを見る限り destroy メソッドも呼び出されていない
2021-09-26 13:25:31.678:INFO :oejshC.servlet_1_0_SNAPSHOT:qtp1175259735-26: org.example.servlet.DemoServlet: Servlet init
2021-09-26 13:25:31.678:WARN :oejshC.servlet_1_0_SNAPSHOT:qtp1175259735-26: unavailable
jakarta.servlet.ServletException: demo exception
    at org.example.servlet.DemoServlet.init(DemoServlet.java:18)
    at jakarta.servlet.GenericServlet.init(GenericServlet.java:178)
    at org.eclipse.jetty.servlet.ServletHolder$Wrapper.init(ServletHolder.java:1305)
    at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:633)
    at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:486)
    at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:731)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:503)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:580)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1571)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1370)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:463)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1544)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1292)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:192)
    at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:51)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.Server.handle(Server.java:562)
    at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:406)
    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:663)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:398)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:319)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
    at org.eclipse.jetty.io.SocketChannelEndPoint$1.run(SocketChannelEndPoint.java:101)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:894)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1038)
    at java.base/java.lang.Thread.run(Thread.java:831)
2021-09-26 13:25:31.679:WARN :oejs.HttpChannel:qtp1175259735-26: /servlet-1.0-SNAPSHOT/
jakarta.servlet.ServletException: demo exception
    at org.example.servlet.DemoServlet.init(DemoServlet.java:18)
    at jakarta.servlet.GenericServlet.init(GenericServlet.java:178)
    at org.eclipse.jetty.servlet.ServletHolder$Wrapper.init(ServletHolder.java:1305)
    at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:633)
    at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:486)
    at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:731)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:503)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:580)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1571)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1370)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:463)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1544)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1292)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:192)
    at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:51)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.Server.handle(Server.java:562)
    at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:406)
    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:663)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:398)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:319)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
    at org.eclipse.jetty.io.SocketChannelEndPoint$1.run(SocketChannelEndPoint.java:101)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:894)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1038)
    at java.base/java.lang.Thread.run(Thread.java:831)
  • 次に UnavailableException をスローしてみる
package org.example.servlet;

import jakarta.servlet.ServletException;
import jakarta.servlet.UnavailableException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import java.io.IOException;
import java.io.PrintWriter;

@WebServlet(urlPatterns = "/")
public class DemoServlet extends HttpServlet {

    @Override
    public void init() throws ServletException {
        log("Servlet init");
        throw new UnavailableException("demo exception");
    }

    @Override
    public void destroy() {
        log("Servlet destroy");
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        log("Servlet handle get request");
        PrintWriter writer = resp.getWriter();
        writer.write("hello from Jakarta Servlet 5");
    }

}
  • デプロイすると以下のログが出てくる
  • ServletException と異なり、スタックトレースが出てきていない
    • この違いは以外だった。ログだけ見ると、サーブレットの起動に成功しているように見える。
  • アクセスすると404が出力される
2021-09-26 13:29:16.228:INFO :oejshC.servlet_1_0_SNAPSHOT:qtp1175259735-25: org.example.servlet.DemoServlet: Servlet init
  • 次に秒数を指定して UnavailableException をスローしてみる
package org.example.servlet;

import jakarta.servlet.ServletException;
import jakarta.servlet.UnavailableException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import java.io.IOException;
import java.io.PrintWriter;

@WebServlet(urlPatterns = "/")
public class DemoServlet extends HttpServlet {

    @Override
    public void init() throws ServletException {
        log("Servlet init");
        throw new UnavailableException("demo exception", 10);
    }

    @Override
    public void destroy() {
        log("Servlet destroy");
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        log("Servlet handle get request");
        PrintWriter writer = resp.getWriter();
        writer.write("hello from Jakarta Servlet 5");
    }

}
  • 起動するとログはこう
  • 起動して10秒間は 503 が返されるが、10秒くらいたった後だと 200 が返されリクエストが処理されるようになる
    • 一行目と二行目のログの時間をみてもらえれば約10秒間差があるのがわかる
  • スタックトレースはログに出てこない
021-09-26 13:33:19.598:INFO :oejshC.servlet_1_0_SNAPSHOT:qtp293907205-25: org.example.servlet.DemoServlet: Servlet init
2021-09-26 13:33:30.067:INFO :oejshC.servlet_1_0_SNAPSHOT:qtp293907205-25: org.example.servlet.DemoServlet: Servlet handle get request
  • 最後に RuntimeException をスローしてみる
package org.example.servlet;

import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import java.io.IOException;
import java.io.PrintWriter;

@WebServlet(urlPatterns = "/")
public class DemoServlet extends HttpServlet {

    @Override
    public void init() {
        log("Servlet init");
        throw new RuntimeException("demo exception");
    }

    @Override
    public void destroy() {
        log("Servlet destroy");
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        log("Servlet handle get request");
        PrintWriter writer = resp.getWriter();
        writer.write("hello from Jakarta Servlet 5");
    }

}
  • ログはこう
  • リクエストを投げると 404 が返ってくる
  • これまでと同様 destroy メソッドは呼ばれない
2021-09-26 13:38:34.255:INFO :oejshC.servlet_1_0_SNAPSHOT:qtp293907205-25: org.example.servlet.DemoServlet: Servlet init
2021-09-26 13:38:34.255:WARN :oejshC.servlet_1_0_SNAPSHOT:qtp293907205-25: unavailable
java.lang.RuntimeException: demo exception
    at org.example.servlet.DemoServlet.init(DemoServlet.java:17)
    at jakarta.servlet.GenericServlet.init(GenericServlet.java:178)
    at org.eclipse.jetty.servlet.ServletHolder$Wrapper.init(ServletHolder.java:1305)
    at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:633)
    at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:486)
    at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:731)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:503)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:580)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1571)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1370)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:463)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1544)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1292)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:192)
    at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:51)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.Server.handle(Server.java:562)
    at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:406)
    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:663)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:398)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:319)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
    at org.eclipse.jetty.io.SocketChannelEndPoint$1.run(SocketChannelEndPoint.java:101)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:894)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1038)
    at java.base/java.lang.Thread.run(Thread.java:831)
2021-09-26 13:38:34.257:WARN :oejs.HttpChannel:qtp293907205-25: /servlet-1.0-SNAPSHOT/
jakarta.servlet.ServletException: org.example.servlet.DemoServlet==org.example.servlet.DemoServlet@3134ca0b{jsp=null,order=-1,inst=true,async=false,src=ANNOTATION:org.example.servlet.DemoServlet,STARTED}
    at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:651)
    at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:486)
    at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:731)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:503)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:580)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1571)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1370)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:463)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1544)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1292)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:192)
    at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:51)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.Server.handle(Server.java:562)
    at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:406)
    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:663)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:398)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:319)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
    at org.eclipse.jetty.io.SocketChannelEndPoint$1.run(SocketChannelEndPoint.java:101)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:894)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1038)
    at java.base/java.lang.Thread.run(Thread.java:831)
Caused by: 
java.lang.RuntimeException: demo exception
    at org.example.servlet.DemoServlet.init(DemoServlet.java:17)
    at jakarta.servlet.GenericServlet.init(GenericServlet.java:178)
    at org.eclipse.jetty.servlet.ServletHolder$Wrapper.init(ServletHolder.java:1305)
    at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:633)
    at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:486)
    at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:731)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:503)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:580)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1571)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1370)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:463)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1544)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1292)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:192)
    at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:51)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.Server.handle(Server.java:562)
    at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:406)
    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:663)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:398)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:319)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
    at org.eclipse.jetty.io.SocketChannelEndPoint$1.run(SocketChannelEndPoint.java:101)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:894)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1038)
    at java.base/java.lang.Thread.run(Thread.java:831)

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