本の教材を使って、Eclipse Javaサーブレットの勉強を始めたものです。
教材の内容に従って、サーブレットを作成はしたのですが、作成したサーブレットのURLを入力しても、「404 NotFound」となってしまいます。
URLがおかしいのか、サーブレットの作成位置がおかしいのか、その他どこがおかしいかがいろいろ試してもわからない状況でして、、
もしよろしければ誰か教えていただけないでしょうか。
大変申し訳ないのですが、よろしくお願いします!
Java Servlet (SampleServlet.java) package jp.tuyano.eclipsebook; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Servlet implementation class SampleServlet */ // WebServletアノテーション(このクラスがサーブレットであることを示す) @WebServlet("/sample") public class SampleServlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public SampleServlet() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); out.println("<html><body>"); out.println("<h1>サーブレットの世界へようこそ!</h1>"); out.println("</body></html>"); //response.getWriter().append("Served at: ").append(request.getContextPath()); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub //doGet(request, response); super.doPost(request, response); } }
フォルダ構成
SampleWebProj
ーーーsrc
ーーーmainーーーjavaーーーjavajp.tuyano.eclipsebookのパッケージを作成、中にSampleServlet.java
ーーーwebappーーーMETA-INF
ーーーwebappーーーWEB-INF
ーーーwebappーーーanswer.jsp
ーーーwebappーーーquestion.jsp
※フォルダ「Servers」のなかの「server.xml」は一番下部分のpathの点のみ編集しています。
※webappの内容のanswer.jspなどは「http://localhost:8080/jsp/answer.jsp」と入力したら内容が表示されるようになっています。
server.xml
1server.xml 2 3 4<?xml version="1.0" encoding="UTF-8"?> 5<!-- 6 Licensed to the Apache Software Foundation (ASF) under one or more 7 contributor license agreements. See the NOTICE file distributed with 8 this work for additional information regarding copyright ownership. 9 The ASF licenses this file to You under the Apache License, Version 2.0 10 (the "License"); you may not use this file except in compliance with 11 the License. You may obtain a copy of the License at 12 13 http://www.apache.org/licenses/LICENSE-2.0 14 15 Unless required by applicable law or agreed to in writing, software 16 distributed under the License is distributed on an "AS IS" BASIS, 17 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 See the License for the specific language governing permissions and 19 limitations under the License. 20--><!-- Note: A "Server" is not itself a "Container", so you may not 21 define subcomponents such as "Valves" at this level. 22 Documentation at /docs/config/server.html 23 --><Server port="8005" shutdown="SHUTDOWN"> 24 <Listener className="org.apache.catalina.startup.VersionLoggerListener"/> 25 <!-- Security listener. Documentation at /docs/config/listeners.html 26 <Listener className="org.apache.catalina.security.SecurityListener" /> 27 --> 28 <!--APR library loader. Documentation at /docs/apr.html --> 29 <Listener SSLEngine="on" className="org.apache.catalina.core.AprLifecycleListener"/> 30 <!-- Prevent memory leaks due to use of particular java/javax APIs--> 31 <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/> 32 <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/> 33 <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener"/> 34 35 <!-- Global JNDI resources 36 Documentation at /docs/jndi-resources-howto.html 37 --> 38 <GlobalNamingResources> 39 <!-- Editable user database that can also be used by 40 UserDatabaseRealm to authenticate users 41 --> 42 <Resource auth="Container" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" name="UserDatabase" pathname="conf/tomcat-users.xml" type="org.apache.catalina.UserDatabase"/> 43 </GlobalNamingResources> 44 45 <!-- A "Service" is a collection of one or more "Connectors" that share 46 a single "Container" Note: A "Service" is not itself a "Container", 47 so you may not define subcomponents such as "Valves" at this level. 48 Documentation at /docs/config/service.html 49 --> 50 <Service name="Catalina"> 51 52 <!--The connectors can use a shared executor, you can define one or more named thread pools--> 53 <!-- 54 <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" 55 maxThreads="150" minSpareThreads="4"/> 56 --> 57 58 59 <!-- A "Connector" represents an endpoint by which requests are received 60 and responses are returned. Documentation at : 61 Java HTTP Connector: /docs/config/http.html (blocking & non-blocking) 62 Java AJP Connector: /docs/config/ajp.html 63 APR (HTTP/AJP) Connector: /docs/apr.html 64 Define a non-SSL/TLS HTTP/1.1 Connector on port 8080 65 --> 66 <Connector connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/> 67 <!-- A "Connector" using the shared thread pool--> 68 <!-- 69 <Connector executor="tomcatThreadPool" 70 port="8080" protocol="HTTP/1.1" 71 connectionTimeout="20000" 72 redirectPort="8443" /> 73 --> 74 <!-- Define a SSL/TLS HTTP/1.1 Connector on port 8443 75 This connector uses the NIO implementation that requires the JSSE 76 style configuration. When using the APR/native implementation, the 77 OpenSSL style configuration is required as described in the APR/native 78 documentation --> 79 <!-- 80 <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol" 81 maxThreads="150" SSLEnabled="true" scheme="https" secure="true" 82 clientAuth="false" sslProtocol="TLS" /> 83 --> 84 85 <!-- Define an AJP 1.3 Connector on port 8009 --> 86 <Connector port="8009" protocol="AJP/1.3" redirectPort="8443"/> 87 88 89 <!-- An Engine represents the entry point (within Catalina) that processes 90 every request. The Engine implementation for Tomcat stand alone 91 analyzes the HTTP headers included with the request, and passes them 92 on to the appropriate Host (virtual host). 93 Documentation at /docs/config/engine.html --> 94 95 <!-- You should set jvmRoute to support load-balancing via AJP ie : 96 <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> 97 --> 98 <Engine defaultHost="localhost" name="Catalina"> 99 100 <!--For clustering, please take a look at documentation at: 101 /docs/cluster-howto.html (simple how to) 102 /docs/config/cluster.html (reference documentation) --> 103 <!-- 104 <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> 105 --> 106 107 <!-- Use the LockOutRealm to prevent attempts to guess user passwords 108 via a brute-force attack --> 109 <Realm className="org.apache.catalina.realm.LockOutRealm"> 110 <!-- This Realm uses the UserDatabase configured in the global JNDI 111 resources under the key "UserDatabase". Any edits 112 that are performed against this UserDatabase are immediately 113 available for use by the Realm. --> 114 <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> 115 </Realm> 116 117 <Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true"> 118 119 <!-- SingleSignOn valve, share authentication between web applications 120 Documentation at: /docs/config/valve.html --> 121 <!-- 122 <Valve className="org.apache.catalina.authenticator.SingleSignOn" /> 123 --> 124 125 <!-- Access log processes all example. 126 Documentation at: /docs/config/valve.html 127 Note: The pattern used is equivalent to using pattern="common" --> 128 <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" pattern="%h %l %u %t "%r" %s %b" prefix="localhost_access_log" suffix=".txt"/> 129 130<!-- この行のpath="/jsp"のみ編集済み--> 131 <Context docBase="SampleWebProj" path="/jsp" reloadable="false" source="org.eclipse.jst.jee.server:SampleWebProj"/></Host> 132 </Engine> 133 </Service> 134</Server>
試したURL
http://localhost:8080/SampleServlet
http://localhost:8080/SampleServlet/sample
http://localhost:8080/jsp/SampleServlet/
http://localhost:8080/jsp/SampleServlet/sample
http://localhost:8080/jsp/jp/tuyano/eclipsebook/SampleServlet/
http://localhost:8080/jsp/jp/tuyano/eclipsebook/SampleServlet/sample
使用環境について
Eclipse IDE 2020_12
Tomcat v8.0 サーバー
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