Java

独学書

Text	Date	Status
Spring解体新書（第２版）	2022/10/23	8章 MyBatis finished
Spring解体新書（バッチ編）	2022/05/07	6章バッチ実行 finished ->コード
サーブレット＆JSP入門	2022/10/07	finished ->コード
Java本格入門	2022/09/25	finished ->コード

環境

Machine	Env／FW	Last Updated
Windows Insider	Pleiades All in One Eclipse Standard Edition 2025-03 (Eclipse 4.35)	2025/03/21
	Apache Tomcat 10.1.39	2025/03/21
	H2 Database 2.2.232	2024/11/16
	Amazon Coretto 22.0.1	2024/05/04
	Jenkins LTS 2.479.2	2024/12/07

ノウハウ

Java Platform Support

VSCode拡張機能からインストール
インストールすると、JDKがインストール済みかチェック
インストールしていないので、エラーメッセージが出る
OKをクリックした後、右下にJDKのダウンロードを促す通知が出る！
「Downloade JDK and setup automatically」をクリックすると、「JDK Downloader」画面が表示される
「Download Oracle OpenJDK」を選択すると、バージョン等が表示される
問題なければ、「Install and start setup」をクリック
インストール結果が右下に通知され、完了したので、「Reload now」をクリックして、再読み込みを行う

VSCodeログ</summary>

  Initiating server activation
  Request to kill LSP server.
  Cannot kill: current process is None
  Launching Oracle Java SE Language Server with c:\JDK21\jdk-21.0.1 and userdir c:\Users\taish\AppData\Roaming\Code\User\workspaceStorage\908f8ce9467ce5b65f5bfff48f86aeab\Oracle.oracle-java
  LSP server launching: 14856
  LSP server user directory: c:\Users\taish\AppData\Roaming\Code\User\workspaceStorage\908f8ce9467ce5b65f5bfff48f86aeab\Oracle.oracle-java
  Code Name                                          Version                               State    
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  org.netbeans.libs.git                              1.56                                  Installed
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  org.netbeans.api.debugger                          1.77                                  Enabled  
  -------------------------------------------------- ------------------------------------- ---------
  Language Client: Starting
  WARNING: A terminally deprecated method in java.lang.System has been called
  WARNING: System::setSecurityManager has been called by org.netbeans.TopSecurityManager (file:/C:/Users/taish/.vscode/extensions/oracle.oracle-java-1.0.0/nbcode/platform/lib/boot.jar)
  WARNING: Please consider reporting this to the maintainers of org.netbeans.TopSecurityManager
  WARNING: System::setSecurityManager will be removed in a future release
  Language Client: Ready

</details>

Java言語

Java 21
- Unnamed Classes and Instance Main Methods
  - mainメソッドをシンプルに記述できるようになった。ただし、プレビュー機能であるため、コンパイルと実行には、–enable-previewオプションが必要
    javac --enable-preview -source 21 sample.java java --enable-preview sample
JSTLを利用する場合、ビルドバスにJARファイルの登録が必要
- Jakarta Standard Tag Library API
- Jakarta Standard Tag Library Implementation
JSTLを用いたjspで起こるエラーを解決したい
Java 9以降でJAXBを使用するには、外部JARが必要
【Java】カレントディレクトリの取得方法
String、Date、LocalDateの変換
Java List.add() UnsupportedOperationException
```
List<Employee> employeeList = Collections.emptyList();
```
クラス名を指定せず、リストを初期化すると、リストへ追加する際にそのオブジェクトが妥当が判断できず、サポートしていないという例外が発生する。やっぱり、リストは、クラス名を指定して、初期化しなきゃいけないってこと。
```
List<Employee> employeeList = new ArrayList<Employee>();
```
Servlet
- WebServeletアノテーションを指定する場合、web.xmlでのマッピングは不要。
  - itmediaの記事にある通り、JSR-315仕様に準じた対応となる模様。
    @WebServlet("/SampleServlet")
    <servlet-mapping> <servlet-name>SampleServlet</servlet-name> <url-pattern>/SampleServlet</url-pattern> </servlet-mapping>
JUnit
- TODO: assertEqualsでなくassertThatを使うべきケースの理解
JavaDoc
- @paramタグ

Spring Framework

lombok 1.18.24
H2 DataBaseは、SQLを作成していることで操作する。データを直接操作することはない。アプリケーションを実行した後の結果は、コンソールで確認する。
```
localhost:8080/h2-console
```

graalVM

IntelliJ IDEAのプロジェクトにて、SDKをGraalVM CE 22.1.0を選択して実行。他のJDKより若干早い模様。

ログ</summary>

  C:\graalvm-ce-java17-22.1.0\bin\java.exe "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2022.1.2\lib\idea_rt.jar=63619:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2022.1.2\bin" -Dfile.encoding=UTF-8 -classpath D:\Repository\Weekend_Programming\kotlin\spring\BatchCsvExport\build\classes\kotlin\main;D:\Repository\Weekend_Programming\kotlin\spring\BatchCsvExport\build\resources\main;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-batch\2.7.0\a6d2ab8abfd4960727e97eb2dee20fb4897893a3\spring-boot-starter-batch-2.7.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-data-jdbc\2.7.0\1d97bc667c9cc549180ce12e05e2002aa5f05e00\spring-boot-starter-data-jdbc-2.7.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-data-jpa\2.7.0\773d8c4fbe92493655f4c7db3a2d95388b8f6eb8\spring-boot-starter-data-jpa-2.7.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.jetbrains.kotlin\kotlin-reflect\1.6.21\5dc3574d9b7bebfcb4ec6b10ada4aaa9e140bd0b\kotlin-reflect-1.6.21.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.jetbrains.kotlin\kotlin-stdlib-jdk8\1.6.21\eeb4d60d75e9ea9c11200d52974e522793b14fba\kotlin-stdlib-jdk8-1.6.21.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.mybatis.spring.boot\mybatis-spring-boot-starter\2.2.2\e4aff8ef9e02358f90b361acc938be3558f29285\mybatis-spring-boot-starter-2.2.2.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-jdbc\2.7.0\dd69f21efd63a2a16d631210b5656dc30348451b\spring-boot-starter-jdbc-2.7.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter\2.7.0\64fd3c21486dd20df9a62566599337dae2eb62cc\spring-boot-starter-2.7.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.batch\spring-batch-core\4.3.6\86b8b16e53ccd167ac27bf46bea1ebce4a3dd484\spring-batch-core-4.3.6.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.data\spring-data-jdbc\2.4.0\3448abf95a24a8190c064fc0a7190f3fc2e56d69\spring-data-jdbc-2.4.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-aop\2.7.0\49f204ec9672800932f8f7b344221251b1422da6\spring-boot-starter-aop-2.7.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\jakarta.transaction\jakarta.transaction-api\1.3.3\c4179d48720a1e87202115fbed6089bdc4195405\jakarta.transaction-api-1.3.3.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\jakarta.persistence\jakarta.persistence-api\2.2.3\8f6ea5daedc614f07a3654a455660145286f024e\jakarta.persistence-api-2.2.3.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.hibernate\hibernate-core\5.6.9.Final\8ec2c7b13de2fbcb19feddfb3a30932bb6a8228a\hibernate-core-5.6.9.Final.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.data\spring-data-jpa\2.7.0\f82986cdf2beda49b0bbb28a880ca644a1eb6c42\spring-data-jpa-2.7.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework\spring-aspects\5.3.20\161a2ccb1d68aed17922981909081bd6d1e46628\spring-aspects-5.3.20.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.jetbrains.kotlin\kotlin-stdlib\1.6.21\11ef67f1900634fd951bad28c53ec957fabbe5b8\kotlin-stdlib-1.6.21.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.jetbrains.kotlin\kotlin-stdlib-jdk7\1.6.21\568c1b78a8e17a4f35b31f0a74e2916095ed74c2\kotlin-stdlib-jdk7-1.6.21.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.mybatis.spring.boot\mybatis-spring-boot-autoconfigure\2.2.2\44d8e5740eb89fcdd3d4f7ce60693b87a5cdbd32\mybatis-spring-boot-autoconfigure-2.2.2.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.mybatis\mybatis\3.5.9\991a4095dbb95d929dfe0a18a69692fd4c614e\mybatis-3.5.9.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.mybatis\mybatis-spring\2.0.7\f10e399232df99280df56d39662c00ea33756112\mybatis-spring-2.0.7.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework\spring-jdbc\5.3.20\140414df1080754fcefe12921543c599e51dfbb2\spring-jdbc-5.3.20.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\com.zaxxer\HikariCP\4.0.3\107cbdf0db6780a065f895ae9d8fbf3bb0e1c21f\HikariCP-4.0.3.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-autoconfigure\2.7.0\483f9a66d0e8326583c5054038d0aa0a95045dc3\spring-boot-autoconfigure-2.7.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot\2.7.0\df8bd106d6c6a6494b787b71d23cef6d2dc73703\spring-boot-2.7.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-logging\2.7.0\5ff2a55d345ad824f39d55eaa32203865a92b30f\spring-boot-starter-logging-2.7.0.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\jakarta.annotation\jakarta.annotation-api\1.3.5\59eb84ee0d616332ff44aba065f3888cf002cd2d\jakarta.annotation-api-1.3.5.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.springframework\spring-core\5.3.20\4b88aa3c401ede3d6c8ac78ea0c646cf326ec24b\spring-core-5.3.20.jar;C:\Users\taish\.gradle\caches\modules-2\files-2.1\org.yaml\snakeyaml\1.30\8fde7fe2586328ac3c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com.example.demo.BatchCsvExportApplicationKt
  23:07:27.757 [Thread-0] DEBUG org.springframework.boot.devtools.restart.classloader.RestartClassLoader - Created RestartClassLoader org.springframework.boot.devtools.restart.classloader.RestartClassLoader@249f4db4

  .   ____          _            __ _ _
  /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
  ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
  \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
  =========|_|==============|___/=/_/_/_/
  :: Spring Boot ::                (v2.7.0)

  2022-07-05 23:07:28.530  INFO 36608 --- [  restartedMain] c.e.demo.BatchCsvExportApplicationKt     : Starting BatchCsvExportApplicationKt using Java 17.0.3 on IdeaPad550-2022 with PID 36608 (D:\Repository\Weekend_Programming\kotlin\spring\BatchCsvExport\build\classes\kotlin\main started by taish in D:\Repository\Weekend_Programming\kotlin\spring\BatchCsvExport)
  2022-07-05 23:07:28.532 DEBUG 36608 --- [  restartedMain] c.e.demo.BatchCsvExportApplicationKt     : Running with Spring Boot v2.7.0, Spring v5.3.20
  2022-07-05 23:07:28.533  INFO 36608 --- [  restartedMain] c.e.demo.BatchCsvExportApplicationKt     : No active profile set, falling back to 1 default profile: "default"
  2022-07-05 23:07:28.639  INFO 36608 --- [  restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
  2022-07-05 23:07:29.887  INFO 36608 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
  2022-07-05 23:07:29.895  INFO 36608 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JDBC repositories in DEFAULT mode.
  2022-07-05 23:07:29.910  INFO 36608 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 11 ms. Found 0 JDBC repository interfaces.
  2022-07-05 23:07:29.928  INFO 36608 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
  2022-07-05 23:07:29.929  INFO 36608 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
  2022-07-05 23:07:29.937  INFO 36608 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 3 ms. Found 0 JPA repository interfaces.
  2022-07-05 23:07:30.023  WARN 36608 --- [  restartedMain] o.m.s.mapper.ClassPathMapperScanner      : No MyBatis mapper was found in '[com.example.demo]' package. Please check your configuration.
  2022-07-05 23:07:30.303  INFO 36608 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
  2022-07-05 23:07:30.600  INFO 36608 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
  2022-07-05 23:07:30.755  INFO 36608 --- [  restartedMain] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
  2022-07-05 23:07:30.826  INFO 36608 --- [  restartedMain] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 5.6.9.Final
  2022-07-05 23:07:31.069  INFO 36608 --- [  restartedMain] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
  2022-07-05 23:07:31.225  INFO 36608 --- [  restartedMain] org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQL10Dialect
  2022-07-05 23:07:31.630  INFO 36608 --- [  restartedMain] o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
  2022-07-05 23:07:31.630  INFO 36608 --- [  restartedMain] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
  2022-07-05 23:07:32.108  WARN 36608 --- [  restartedMain] o.s.b.a.batch.JpaBatchConfigurer         : JPA does not support custom isolation levels, so locks may not be taken when launching Jobs. To silence this warning, set 'spring.batch.jdbc.isolation-level-for-create' to 'default'.
  2022-07-05 23:07:32.113  INFO 36608 --- [  restartedMain] o.s.b.c.r.s.JobRepositoryFactoryBean     : No database type set, using meta data indicating: POSTGRES
  2022-07-05 23:07:32.221  INFO 36608 --- [  restartedMain] o.s.b.c.l.support.SimpleJobLauncher      : No TaskExecutor has been set, defaulting to synchronous executor.
  2022-07-05 23:07:32.436  INFO 36608 --- [  restartedMain] o.s.b.d.a.OptionalLiveReloadServer       : LiveReload server is running on port 35729
  2022-07-05 23:07:32.456  INFO 36608 --- [  restartedMain] c.e.demo.BatchCsvExportApplicationKt     : Started BatchCsvExportApplicationKt in 4.674 seconds (JVM running for 5.878)
  2022-07-05 23:07:32.458  INFO 36608 --- [  restartedMain] o.s.b.a.b.JobLauncherApplicationRunner   : Running default command line with: []
  2022-07-05 23:07:32.589  INFO 36608 --- [  restartedMain] o.s.b.c.l.support.SimpleJobLauncher      : Job: [SimpleJob: [name=ExportJpaPagingJob]] launched with the following parameters: [{run.id=5}]
  2022-07-05 23:07:32.626  INFO 36608 --- [  restartedMain] o.s.batch.core.job.SimpleStepHandler     : Executing step: [ExportJpaPagingStep]
  2022-07-05 23:07:32.665 DEBUG 36608 --- [  restartedMain] c.e.d.config.SampleProperty$Companion    : outputPath = D:/work\employee.csv
  2022-07-05 23:07:32.757 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@45fe467f
  2022-07-05 23:07:32.759 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@20c16cd0
  2022-07-05 23:07:32.760 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@922abf
  2022-07-05 23:07:32.760 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@191b0e83
  2022-07-05 23:07:32.760 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@16168e5e
  2022-07-05 23:07:32.762 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@5a30da8c
  2022-07-05 23:07:32.762 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@4b302854
  2022-07-05 23:07:32.762 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@601aa9d1
  2022-07-05 23:07:32.762 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@2fb4ea61
  2022-07-05 23:07:32.763 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@730ca1a1
  2022-07-05 23:07:32.794 DEBUG 36608 --- [  restartedMain] c.e.d.listener.WriteListener$Companion   : AfterWrite: count=10
  2022-07-05 23:07:32.802 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@307b530b
  2022-07-05 23:07:32.802 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@1df45622
  2022-07-05 23:07:32.802 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@d39f553
  2022-07-05 23:07:32.802 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@eab2196
  2022-07-05 23:07:32.802 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@6422c843
  2022-07-05 23:07:32.804 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@2193036d
  2022-07-05 23:07:32.805 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@71dd8b2b
  2022-07-05 23:07:32.805 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@771cd5d7
  2022-07-05 23:07:32.805 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@16e21af6
  2022-07-05 23:07:32.805 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@2f53fb2c
  2022-07-05 23:07:32.807 DEBUG 36608 --- [  restartedMain] c.e.d.listener.WriteListener$Companion   : AfterWrite: count=10
  2022-07-05 23:07:32.813 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@2e0896e
  2022-07-05 23:07:32.814 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@6678cf39
  2022-07-05 23:07:32.814 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@3f0a5ddc
  2022-07-05 23:07:32.814 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@201435c3
  2022-07-05 23:07:32.814 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@26b97356
  2022-07-05 23:07:32.817 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@42b4c39b
  2022-07-05 23:07:32.817 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@20075a00
  2022-07-05 23:07:32.817 DEBUG 36608 --- [  restartedMain] c.e.d.listener.ReadListener$Companion    : AfterRead: com.example.demo.domain.model.Employee@1f06ca2b
  2022-07-05 23:07:32.818 DEBUG 36608 --- [  restartedMain] c.e.d.listener.WriteListener$Companion   : AfterWrite: count=8
  2022-07-05 23:07:32.823  INFO 36608 --- [  restartedMain] o.s.batch.core.step.AbstractStep         : Step: [ExportJpaPagingStep] executed in 197ms
  2022-07-05 23:07:32.857  INFO 36608 --- [  restartedMain] o.s.b.c.l.support.SimpleJobLauncher      : Job: [SimpleJob: [name=ExportJpaPagingJob]] completed with the following parameters: [{run.id=5}] and the following status: [COMPLETED] in 244ms
  2022-07-05 23:07:32.869  INFO 36608 --- [ionShutdownHook] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
  2022-07-05 23:07:32.874  INFO 36608 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
  2022-07-05 23:07:32.881  INFO 36608 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.

  プロセスは終了コード 0 で終了しました

</details>

Pleiades

pleiades 2025-03
- Tomcat 10.1.39
Pleiades 2024-03
Pleiades 2022-06およびTomcat 10.0.20での対応
- サーブレット等の作成は、[新規]-[その他]から行う。
バージョン移行
1. 新しいバージョンをダウンロードする
2. 旧バージョンのフォルダを削除する
3. ダウンロードしたファイルを展開する
  - Windowsでは、ZIPファイルの名前ではなく、短い名前のフォルダ配下に展開する。
4. eclipseを起動する。
5. 以前使用していたワークスペースを選択した場合、「古いバージョンで作成されました。続行して、古いバージョンと互換性がない可能性があるワークスペースを更新しますか？」と確認されるので、「続行」を選択して継続する。
6. 「-clean開始中」と出ているので待つ。
7. ワークスペースが表示される。
Windows Defender除外チェック
Windows Defenderのチェック対象から除外するよう設定する
エンコード設定
- 日本語を入出力する際、実行構成の設定を行う。
  - 共通タブのエンコードにて、その他を選択し、ドロップダウンリストから”MS932”を選択する。
Tomcat 実行構成
- ランタイム環境
  - インストール可能な最新バージョンをインストールして設定する
- サーバー
  - 設定したランタイム環境でサーバーを作成する
- 起動時のメッセージが日本語のため、エンコードを「システム・エンコーディングを使用」を選択する。

Jenkins

Jenkinsのセットアップ（LTS 2.479.2）
- アンロック
- プラグインのセットアップ
- admin/admin
Jenkinsのセットアップ（LTS 2.401.3）
- 非推奨のサービス起動でセットアップ
- admin/admin
ポート番号変更
- インストール時に変更する場合
- jenkins.xmlで変更する場合
```
<arguments>-Xrs 省略 --httpPort=8082 省略</arguments>
```
JUnitはじめ、プラグインの確認（Java本格入門 13章）
- ビルド実行を確認するも、サンプルが良くないらしく、エラーになってしまう。環境としてはできているので、OKとする。

Tomcat

WindowsでインストールしたTomcatの起動ポートを変更する
- ポート番号変更(${TOMCAT_HOME}/conf/server.xml)
```
<Connector port="8081" protocol="HTTP/1.1"
      connectionTimeout="20000"
      redirectPort="8443" />
```
LifecycleExceptionで起動できない
- Eclipseで起動する場合、関連する動的Webプロジェクトはすべてオープンしていないと発生するので、注意。

H2 Database

環境変数H2DRIVERSまたはCLASSPATHにH2*.jarを登録する。
データベースは、”H2 Console”で作成する。ただし、Embeddedモードでしか作成できない。

Web App Sample

H2 Database コンソールを起動する
```
C:\Program Files (x86)\H2\bin\h2.bat
```

データベース（~docoTsubu）に、mutter テーブルを作成

CREATE TABLE MUTTER (
  ID INT PRIMARY KEY AUTO_INCREMENT,
  NAME VARCHAR(100) NOT NULL,
  TEXT VARCHAR(255) NOT NULL
);

サンプルデータを追加する

INSERT INTO MUTTER (NAME, TEXT) VALUES ('湊', '今日は休みだ');
INSERT INTO MUTTER (NAME, TEXT) VALUES ('綾部', 'いいな～');