Update to Spring Boot 3.4

.gitignore

@@ -8,3 +8,5 @@
 .gradle
 build/
 out/
+
+.kotlin

build.gradle.kts

@@ -1,30 +1,30 @@
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-
-
 description = "Kotlin version of the Spring Petclinic application"
 group = "org.springframework.samples"
 // Align with Spring Version
-version = "3.3.0"
-
-java.sourceCompatibility = JavaVersion.VERSION_17
+version = "3.4.0"
 
 plugins {
     val kotlinVersion = "2.1.0"
-    id("org.springframework.boot") version "3.3.5"
+    id("org.springframework.boot") version "3.4.0"
     id("io.spring.dependency-management") version "1.1.6"
     id("com.google.cloud.tools.jib") version "3.4.4"
     kotlin("jvm") version kotlinVersion
     kotlin("plugin.spring") version kotlinVersion
 }
 
-// WebJars versions are also referenced in src/main/resources/templates/fragments/layout.html for resource URLs
 val boostrapVersion = "5.3.3"
 val fontAwesomeVersion = "4.7.0"
+val webjarsLocatorLiteVersion = "1.0.1"
+
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
+}
 
-tasks.withType<KotlinCompile> {
-    kotlinOptions {
-        jvmTarget = "17"
-        freeCompilerArgs = listOf("-Xjsr305=strict")
+kotlin {
+    compilerOptions {
+        freeCompilerArgs.addAll("-Xjsr305=strict")
     }
 }
 
@@ -59,9 +59,9 @@ dependencies {
 
     runtimeOnly("com.h2database:h2")
     runtimeOnly("com.mysql:mysql-connector-j")
+    runtimeOnly("org.webjars:webjars-locator-lite:${webjarsLocatorLiteVersion}")
 
     developmentOnly("org.springframework.boot:spring-boot-devtools")
-    implementation(kotlin("stdlib-jdk8"))
 }
 
 jib {

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.11-bin.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -15,6 +15,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 
 ##############################################################################
 #
@@ -55,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -83,10 +85,9 @@ done
 # This is normally unused
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
+' "$PWD" ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -133,26 +134,29 @@ location of your Java installation."
     fi
 else
     JAVACMD=java
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
+    fi
 fi
 
 # Increase the maximum file descriptors if we can.
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045 
+        # shellcheck disable=SC2039,SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045 
+        # shellcheck disable=SC2039,SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -197,11 +201,15 @@ if "$cygwin" || "$msys" ; then
     done
 fi
 
-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \

gradlew.bat

@@ -13,6 +13,8 @@
 @rem See the License for the specific language governing permissions and
 @rem limitations under the License.
 @rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
 
 @if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
@@ -43,11 +45,11 @@ set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute
 
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 
@@ -57,11 +59,11 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
 if exist "%JAVA_EXE%" goto execute
 
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 

src/main/resources/templates/fragments/layout.html

@@ -17,7 +17,7 @@
     <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
     <![endif]-->
 
-    <link th:href="@{/webjars/font-awesome/4.7.0/css/font-awesome.min.css}" rel="stylesheet">
+    <link th:href="@{/webjars/font-awesome/css/font-awesome.min.css}" rel="stylesheet">
     <link rel="stylesheet" th:href="@{/resources/css/petclinic.css}" />
 
 </head>
@@ -87,7 +87,7 @@
     </div>
 </div>
 
-<script th:src="@{/webjars/bootstrap/5.1.3/dist/js/bootstrap.bundle.min.js}"></script>
+<script th:src="@{/webjars/bootstrap/dist/js/bootstrap.bundle.min.js}"></script>
 
 </body>
 

src/test/jmeter/petclinic_test_plan.jmx

@@ -135,7 +135,7 @@
           <stringProp name="HTTPSampler.response_timeout"></stringProp>
           <stringProp name="HTTPSampler.protocol"></stringProp>
           <stringProp name="HTTPSampler.contentEncoding"></stringProp>
-          <stringProp name="HTTPSampler.path">${CONTEXT_WEB}/webjars/bootstrap/5.1.3/dist/js/bootstrap.bundle.min.js</stringProp>
+          <stringProp name="HTTPSampler.path">${CONTEXT_WEB}/webjars/bootstrap/dist/js/bootstrap.bundle.min.js</stringProp>
           <stringProp name="HTTPSampler.method">GET</stringProp>
           <boolProp name="HTTPSampler.follow_redirects">true</boolProp>
           <boolProp name="HTTPSampler.auto_redirects">false</boolProp>

src/test/kotlin/org/springframework/samples/petclinic/owner/OwnerControllerTest.kt

@@ -7,11 +7,10 @@ import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.extension.ExtendWith
 import org.mockito.BDDMockito.given
-import org.mockito.BDDMockito.verify
 import org.mockito.Mockito
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
-import org.springframework.boot.test.mock.mockito.MockBean
+import org.springframework.test.context.bean.override.mockito.MockitoBean
 import org.springframework.test.context.junit.jupiter.SpringExtension
 import org.springframework.test.web.servlet.MockMvc
 import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get
@@ -35,10 +34,10 @@ class OwnerControllerTest {
     @Autowired
     lateinit private var mockMvc: MockMvc
 
-    @MockBean
+    @MockitoBean
     private lateinit var owners: OwnerRepository
 
-    @MockBean
+    @MockitoBean
     private lateinit var visits: VisitRepository
 
     private lateinit var george: Owner

src/test/kotlin/org/springframework/samples/petclinic/owner/PetControllerTest.kt

@@ -8,7 +8,7 @@ import org.junit.jupiter.api.extension.ExtendWith
 import org.mockito.BDDMockito.given
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
-import org.springframework.boot.test.mock.mockito.MockBean
+import org.springframework.test.context.bean.override.mockito.MockitoBean
 import org.springframework.context.annotation.ComponentScan
 import org.springframework.context.annotation.FilterType
 import org.springframework.test.context.junit.jupiter.SpringExtension
@@ -32,10 +32,10 @@ class PetControllerTest {
     @Autowired
     lateinit private var mockMvc: MockMvc
 
-    @MockBean
+    @MockitoBean
     private lateinit var pets: PetRepository
 
-    @MockBean
+    @MockitoBean
     private lateinit var owners: OwnerRepository
 
     @BeforeEach

src/test/kotlin/org/springframework/samples/petclinic/owner/VisitControllerTest.kt

@@ -6,7 +6,7 @@ import org.junit.jupiter.api.extension.ExtendWith
 import org.mockito.BDDMockito.given
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
-import org.springframework.boot.test.mock.mockito.MockBean
+import org.springframework.test.context.bean.override.mockito.MockitoBean
 import org.springframework.samples.petclinic.visit.VisitRepository
 import org.springframework.test.context.junit.jupiter.SpringExtension
 import org.springframework.test.web.servlet.MockMvc
@@ -26,10 +26,10 @@ class VisitControllerTest {
     @Autowired
     lateinit private var mockMvc: MockMvc
 
-    @MockBean
+    @MockitoBean
     private lateinit var visits: VisitRepository
 
-    @MockBean
+    @MockitoBean
     private lateinit var pets: PetRepository
 
     @BeforeEach

src/test/kotlin/org/springframework/samples/petclinic/vet/VetControllerTest.kt

@@ -7,7 +7,7 @@ import org.junit.jupiter.api.extension.ExtendWith
 import org.mockito.BDDMockito.given
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
-import org.springframework.boot.test.mock.mockito.MockBean
+import org.springframework.test.context.bean.override.mockito.MockitoBean
 import org.springframework.http.MediaType
 import org.springframework.test.context.junit.jupiter.SpringExtension
 import org.springframework.test.web.servlet.MockMvc
@@ -24,7 +24,7 @@ class VetControllerTest {
     @Autowired
     lateinit private var mockMvc: MockMvc
 
-    @MockBean
+    @MockitoBean
     private lateinit var vets: VetRepository
 
     @BeforeEach