Dodatkowy projekt z bazą H2

PC51-SpringDataH2/.gitignore

+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

PC51-SpringDataH2/.mvn/wrapper/maven-wrapper.properties

+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.4/apache-maven-3.9.4-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar

PC51-SpringDataH2/mvnw.cmd

+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.2.0
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set WRAPPER_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET WRAPPER_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET WRAPPER_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %WRAPPER_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%WRAPPER_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM If specified, validate the SHA-256 sum of the Maven wrapper jar file
+SET WRAPPER_SHA_256_SUM=""
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperSha256Sum" SET WRAPPER_SHA_256_SUM=%%B
+)
+IF NOT %WRAPPER_SHA_256_SUM%=="" (
+    powershell -Command "&{"^
+       "$hash = (Get-FileHash \"%WRAPPER_JAR%\" -Algorithm SHA256).Hash.ToLower();"^
+       "If('%WRAPPER_SHA_256_SUM%' -ne $hash){"^
+       "  Write-Output 'Error: Failed to validate Maven wrapper SHA-256, your Maven wrapper might be compromised.';"^
+       "  Write-Output 'Investigate or delete %WRAPPER_JAR% to attempt a clean download.';"^
+       "  Write-Output 'If you updated your Maven version, you need to update the specified wrapperSha256Sum property.';"^
+       "  exit 1;"^
+       "}"^
+       "}"
+    if ERRORLEVEL 1 goto error
+)
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% ^
+  %JVM_CONFIG_MAVEN_PROPS% ^
+  %MAVEN_OPTS% ^
+  %MAVEN_DEBUG_OPTS% ^
+  -classpath %WRAPPER_JAR% ^
+  "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+  %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
+
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
+
+cmd /C exit /B %ERROR_CODE%

PC51-SpringDataH2/pom.xml

+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>3.1.2</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.example</groupId>
+	<artifactId>PC51-SpringDataH2</artifactId>
+	<version>1.0</version>
+	<name>PC51-SpringDataH2</name>
+	<description>JPA - scenariusz &quot;Java first&quot;</description>
+	<properties>
+		<java.version>17</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-thymeleaf</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

PC51-SpringDataH2/src/main/java/com/example/demo/Pc51SpringDataH2Application.java

+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Pc51SpringDataH2Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Pc51SpringDataH2Application.class, args);
+    }
+
+}

PC51-SpringDataH2/src/main/java/com/example/demo/model/Customer.java

+package com.example.demo.model;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+
+@Entity
+public class Customer {
+
+  @Id
+  @GeneratedValue(strategy=GenerationType.AUTO)
+  private Long id;
+  private String firstName;
+  private String lastName;
+
+  protected Customer() {}
+
+  public Customer(String firstName, String lastName) {
+    this.firstName = firstName;
+    this.lastName = lastName;
+  }
+
+  @Override
+  public String toString() {
+    return String.format(
+        "Customer[id=%d, firstName='%s', lastName='%s']",
+        id, firstName, lastName);
+  }
+
+  public Long getId() {
+    return id;
+  }
+
+  public String getFirstName() {
+    return firstName;
+  }
+
+  public String getLastName() {
+    return lastName;
+  }
+}
\ No newline at end of file

PC51-SpringDataH2/src/main/java/com/example/demo/model/Ogloszenie.java

+package com.example.demo.model;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+
+@Entity
+public class Ogloszenie {
+    @Id
+    @GeneratedValue(strategy=GenerationType.AUTO)
+    private Long id;
+    private String tytul;
+    private BigDecimal cena;
+    private LocalDateTime dataWystawienia;
+    
+    public Ogloszenie() {
+        
+    }
+    
+    public Ogloszenie(Long id, String tytul, BigDecimal cena, LocalDateTime dataWystawienia) {
+        this.id = id;
+        this.tytul = tytul;
+        this.cena = cena;
+        this.dataWystawienia = dataWystawienia;
+    }
+
+    public Ogloszenie(String tytul, int cena) {
+        this(null, tytul, BigDecimal.valueOf(cena).setScale(2), LocalDateTime.now());
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getTytul() {
+        return tytul;
+    }
+
+    public void setTytul(String tytul) {
+        this.tytul = tytul;
+    }
+
+    public BigDecimal getCena() {
+        return cena;
+    }
+
+    public void setCena(BigDecimal cena) {
+        this.cena = cena;
+    }
+
+    public LocalDateTime getDataWystawienia() {
+        return dataWystawienia;
+    }
+
+    public void setDataWystawienia(LocalDateTime dataWystawienia) {
+        this.dataWystawienia = dataWystawienia;
+    }
+
+    @Override
+    public String toString() {
+        return "Ogloszenie [id=" + id + ", tytul=" + tytul + ", cena=" + cena + ", dataWystawienia=" + dataWystawienia + "]";
+    }    
+
+}

PC51-SpringDataH2/src/main/java/com/example/demo/model/OgloszenieMieszkaniowe.java

+package com.example.demo.model;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+import jakarta.persistence.Entity;
+
+@Entity
+public class OgloszenieMieszkaniowe extends Ogloszenie {
+    private String miasto;
+    private int pietro;
+    private double metraz;
+    private boolean winda;
+    
+    public OgloszenieMieszkaniowe() {
+        
+    }
+
+    public OgloszenieMieszkaniowe(Long id, String tytul, BigDecimal cena, LocalDateTime dataWystawienia, String miasto,
+            int pietro, double metraz, boolean winda) {
+        super(id, tytul, cena, dataWystawienia);
+        this.miasto = miasto;
+        this.pietro = pietro;
+        this.metraz = metraz;
+        this.winda = winda;
+    }
+
+    public OgloszenieMieszkaniowe(String tytul, int cena, String miasto,
+            int pietro, double metraz, boolean winda) {
+        super(tytul, cena);
+        this.miasto = miasto;
+        this.pietro = pietro;
+        this.metraz = metraz;
+        this.winda = winda;
+    }
+
+    public String getMiasto() {
+        return miasto;
+    }
+
+    public void setMiasto(String miasto) {
+        this.miasto = miasto;
+    }
+
+    public int getPietro() {
+        return pietro;
+    }
+
+    public void setPietro(int pietro) {
+        this.pietro = pietro;
+    }
+
+    public double getMetraz() {
+        return metraz;
+    }
+
+    public void setMetraz(double metraz) {
+        this.metraz = metraz;
+    }
+
+    public boolean isWinda() {
+        return winda;
+    }
+
+    public void setWinda(boolean winda) {
+        this.winda = winda;
+    }
+
+    @Override
+    public String toString() {
+        return "OgloszenieMieszkaniowe [id=" + getId() + ", tytul=" + getTytul() + ", cena=" + getCena()
+                + ", dataWystawienia=" + getDataWystawienia() + ", miasto=" + miasto + ", pietro=" + pietro
+                + ", metraz=" + metraz + ", winda=" + winda + "]";
+    }
+
+}

PC51-SpringDataH2/src/main/java/com/example/demo/model/OgloszenieSamochodowe.java

+package com.example.demo.model;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+import jakarta.persistence.Entity;
+
+@Entity
+public class OgloszenieSamochodowe extends Ogloszenie {
+    private String marka, model;
+    private Integer stanLicznika;
+    private Paliwo paliwo;
+    
+    public OgloszenieSamochodowe() {
+        
+    }
+
+    public OgloszenieSamochodowe(Long id, String tytul, BigDecimal cena, LocalDateTime dataWystawienia, String marka,
+            String model, Integer stanLicznika, Paliwo paliwo) {
+        super(id, tytul, cena, dataWystawienia);
+        this.marka = marka;
+        this.model = model;
+        this.stanLicznika = stanLicznika;
+        this.paliwo = paliwo;
+    }
+
+    public OgloszenieSamochodowe(int cena, String marka, String model, Integer stanLicznika, String paliwo) {
+        super(marka + " " + model, cena);
+        this.marka = marka;
+        this.model = model;
+        this.stanLicznika = stanLicznika;
+        this.paliwo = Paliwo.valueOf(paliwo);
+    }
+
+    public String getMarka() {
+        return marka;
+    }
+
+    public void setMarka(String marka) {
+        this.marka = marka;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public Integer getStanLicznika() {
+        return stanLicznika;
+    }
+
+    public void setStanLicznika(Integer stanLicznika) {
+        this.stanLicznika = stanLicznika;
+    }
+
+    public Paliwo getPaliwo() {
+        return paliwo;
+    }
+
+    public void setPaliwo(Paliwo paliwo) {
+        this.paliwo = paliwo;
+    }
+    
+    
+
+    @Override
+    public String toString() {
+        return "OgloszenieSamochodowe [id=" + getId() + ", tytul=" + getTytul() + ", cena=" + getCena()
+                + ", dataWystawienia=" + getDataWystawienia() + ", marka=" + marka + ", model=" + model
+                + ", stanLicznika=" + stanLicznika + ", paliwo=" + paliwo + "]";
+    }
+
+
+
+    public static enum Paliwo {
+        BENZYNA,
+        ON,
+        GAZ,
+        HYBRYDA,
+        ELEKTRYK,
+    }
+}

PC51-SpringDataH2/src/main/java/com/example/demo/repo/CustomerRepository.java

+package com.example.demo.repo;
+
+import java.util.List;
+
+import org.springframework.data.repository.CrudRepository;
+
+import com.example.demo.model.Customer;
+
+public interface CustomerRepository extends CrudRepository<Customer, Long> {
+
+  List<Customer> findByLastName(String lastName);
+
+  Customer findById(long id);
+}
\ No newline at end of file

PC51-SpringDataH2/src/main/java/com/example/demo/repo/DBService.java

+package com.example.demo.repo;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.example.demo.model.Customer;
+import com.example.demo.model.Ogloszenie;
+import com.example.demo.model.OgloszenieMieszkaniowe;
+import com.example.demo.model.OgloszenieSamochodowe;
+import com.example.demo.model.OgloszenieSamochodowe.Paliwo;
+
+@Service
+public class DBService {
+
+    @Autowired
+    private CustomerRepository customerRepository;
+
+    @Autowired
+    private OgloszeniaRepository ogloszeniaRepository;
+
+    public void initDatabase() {
+        customerRepository.save(new Customer("Jack", "Bauer"));
+        customerRepository.save(new Customer("Chloe", "O'Brian"));
+        customerRepository.save(new Customer("Kim", "Bauer"));
+        customerRepository.save(new Customer("David", "Palmer"));
+        customerRepository.save(new Customer("Michelle", "Dessler"));
+        
+        List<Ogloszenie> ogloszenia = List.of(
+                new Ogloszenie("Sprzedam rower", 500),
+                new Ogloszenie("Oddam biurko", 0),
+                new OgloszenieSamochodowe(25900, "Toyota", "Yaris", 150_000, "HYBRYDA"),
+                new OgloszenieSamochodowe(33300, "Volkswagen", "Passat", 290_000, "ON"),
+                new OgloszenieMieszkaniowe("Kawalerka w centrum", 790_000, "Warszawa", 5, 39.9, true)
+        );
+        
+        ogloszeniaRepository.saveAllAndFlush(ogloszenia);
+    }
+}

PC51-SpringDataH2/src/main/java/com/example/demo/repo/OgloszeniaRepository.java

+package com.example.demo.repo;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import com.example.demo.model.Ogloszenie;
+
+public interface OgloszeniaRepository extends JpaRepository<Ogloszenie, Long> {
+
+}
\ No newline at end of file

PC51-SpringDataH2/src/main/java/com/example/demo/rest/RCustomers.java

+package com.example.demo.rest;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.example.demo.model.Customer;
+import com.example.demo.repo.CustomerRepository;
+
+@RestController
+@RequestMapping(path="/rest/customers", produces="application/json")
+public class RCustomers {
+    @Autowired
+    private CustomerRepository customerRepository;
+    
+    @GetMapping
+    public Iterable<Customer> readAll() {
+        return customerRepository.findAll();
+    }
+    
+    @GetMapping("/{id}")
+    public Customer readOne(@PathVariable("id") long id) {
+        return customerRepository.findById(id);
+    }
+}

PC51-SpringDataH2/src/main/java/com/example/demo/rest/ROgloszenia.java

+package com.example.demo.rest;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.server.ResponseStatusException;
+
+import com.example.demo.model.Ogloszenie;
+import com.example.demo.repo.OgloszeniaRepository;
+
+@RestController
+@RequestMapping(path="/rest/ogloszenia", produces="application/json")
+public class ROgloszenia {
+    @Autowired
+    private OgloszeniaRepository ogloszeniaRepository;
+    
+    @GetMapping
+    public Iterable<Ogloszenie> readAll() {
+        return ogloszeniaRepository.findAll();
+    }
+    
+    @GetMapping("/{id}")
+    public Ogloszenie readOne(@PathVariable("id") long id) {
+        return ogloszeniaRepository.findById(id)
+                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND));
+    }
+}

PC51-SpringDataH2/src/main/java/com/example/demo/web/RootController.java

+package com.example.demo.web;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import com.example.demo.repo.DBService;
+
+@Controller
+public class RootController {
+    @Autowired
+    private DBService dbService;
+    
+    @RequestMapping("/")
+    public String root() {
+        return "index.html";
+    }
+    
+    @RequestMapping("/init")
+    public String initDatabase() {
+        dbService.initDatabase();
+        return "redirect:/";
+    }
+    
+
+}

PC51-SpringDataH2/src/main/resources/application.properties

+spring.datasource.url=jdbc:h2:mem:test
+spring.h2.console.enabled=true
+spring.h2.console.path=/h2

PC51-SpringDataH2/src/main/resources/static/styl.css

+body {
+	background-color: #FFFFCC;
+	font-family: 'Arial', sans-serif;
+}
+
+h1 {
+	color: green;
+	text-align: center;
+}
+
+form {
+	margin: 30px auto;
+	padding: 20px;
+	width: 800px;
+	border: 4px solid blue;
+	background-color: #AAEEFF;
+}
+
+.wynik {
+	background-color: #FFFFFF;
+	border: 3px solid green;
+	margin: 20px auto;
+	width: 800px;
+	padding: 10px;
+	color: green;
+}
+
+.error {
+	background-color: #FFFFFF;
+	border: 6px double red;
+	margin: 20px auto;
+	padding: 10px;
+	width: 800px;
+	color: red;
+	font-weight: bold;
+}

PC51-SpringDataH2/src/main/resources/templates/index.html

+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8">
+    <title>Spis treści</title>
+    <link rel="stylesheet" type="text/css" th:href="@{/styl.css}" href="../static/styl.css">
+</head>
+<body>
+<h1>Zabawy w H2</h1>
+
+<form id="init-form" th:action="@{/init}">
+	<button>Wgraj dane</button>
+</form>
+
+<form id="h2-console" th:action="@{/h2}" target="_blank">
+	<button>Konsola H2</button>
+</form>
+
+<h2>Zapytania REST-owe</h2>
+<ul>
+	<li><a th:href="@{/rest/customers}">/rest/customers</a></li>
+	<li><a th:href="@{/rest/customers/1}">/rest/customers/1</a></li>
+	<li><a th:href="@{/rest/ogloszenia}">/rest/ogloszenia</a></li>
+	<li><a th:href="@{/rest/ogloszenia/1}">/rest/ogloszenia/1</a></li>
+</ul>
+
+</body>
+</html>

PC51-SpringDataH2/src/test/java/com/example/demo/Pc51SpringDataH2ApplicationTests.java

+package com.example.demo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class Pc51SpringDataH2ApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}