I am trying to get to see a Swagger page, using Spring Boot 3, Java 17, Open Api 3.
I must do something wrong, but what? Is there something that is not compatible?
On http://localhost:8080/v3/api-docs/ or http://localhost:8080/swagger-ui I getWhitelabel Error Page.
I am migrating from Spring Boot 2.5, but to be sure that I didn't forget to delete something resulting in this error, I copied a tutorial from here https://www.techgeeknext.com/spring-boot/spring-boot-swagger3-example (I wrote it in the end of this post).
Although it runs, in the console are the errors:
ERROR Class 'org.springframework.core.io.support.PathMatchingResourcePatternResolver' could not be processed by org.zeroturnaround.javarebel.integration.spring.core.cbp.PathMatchingResourcePatternResolverCBP@jdk.internal.loader.ClassLoaders$AppClassLoader@7a46a697: org.zeroturnaround.bundled.javassist.NotFoundException: retrieveMatchingFiles(..) is not found in org.springframework.core.io.support.PathMatchingResourcePatternResolver
at org.zeroturnaround.bundled.javassist.CtClassType.getDeclaredMethod(SourceFile:1356)
at org.zeroturnaround.javarebel.integration.spring.core.cbp.PathMatchingResourcePatternResolverCBP.registerScannedDirs(PathMatchingResourcePatternResolverCBP.java:255)
at org.zeroturnaround.javarebel.integration.spring.core.cbp.PathMatchingResourcePatternResolverCBP.process(PathMatchingResourcePatternResolverCBP.java:41)
at org.zeroturnaround.javarebel.integration.support.JavassistClassBytecodeProcessor.process(SourceFile:137)
at org.zeroturnaround.javarebel.integration.support.CacheAwareJavassistClassBytecodeProcessor.process(SourceFile:34)
at org.zeroturnaround.javarebel.integration.support.JavassistClassBytecodeProcessor.process(SourceFile:83)
at com.zeroturnaround.javarebel.yg.a(SourceFile:413)
at com.zeroturnaround.javarebel.yg.a(SourceFile:340)
at com.zeroturnaround.javarebel.SDKIntegrationImpl.runBytecodeProcessors(SourceFile:44)
at com.zeroturnaround.javarebel.vk.transform(SourceFile:140)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:43009)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at org.springframework.core.io.support.ResourceArrayPropertyEditor.<init>(ResourceArrayPropertyEditor.java:77)
at org.springframework.beans.PropertyEditorRegistrySupport.createDefaultEditors(PropertyEditorRegistrySupport.java:218)
at org.springframework.beans.PropertyEditorRegistrySupport.getDefaultEditor(PropertyEditorRegistrySupport.java:193)
at org.springframework.boot.context.properties.bind.BindConverter$TypeConverterConverter.matches(BindConverter.java:209)
at org.springframework.core.convert.support.GenericConversionService$ConvertersForPair.getConverter(GenericConversionService.java:663)
at org.springframework.core.convert.support.GenericConversionService$Converters.getRegisteredConverter(GenericConversionService.java:560)
at org.springframework.core.convert.support.GenericConversionService$Converters.find(GenericConversionService.java:544)
at org.springframework.core.convert.support.GenericConversionService.getConverter(GenericConversionService.java:261)
at org.springframework.core.convert.support.GenericConversionService.canConvert(GenericConversionService.java:146)
at org.springframework.boot.context.properties.bind.BindConverter$TypeConverterConversionService.canConvert(BindConverter.java:167)
at org.springframework.boot.context.properties.bind.BindConverter.convert(BindConverter.java:108)
at org.springframework.boot.context.properties.bind.BindConverter.convert(BindConverter.java:100)
at org.springframework.boot.context.properties.bind.BindConverter.convert(BindConverter.java:92)
at org.springframework.boot.context.properties.bind.Binder.bindProperty(Binder.java:459)
at org.springframework.boot.context.properties.bind.Binder.bindObject(Binder.java:403)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:343)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:332)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:262)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:223)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:210)
at org.springframework.boot.context.config.AnsiOutputApplicationListener.onApplicationEvent(AnsiOutputApplicationListener.java:43)
at org.springframework.boot.context.config.AnsiOutputApplicationListener.onApplicationEvent(AnsiOutputApplicationListener.java:37)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
at org.springframework.boot.context.event.EventPublishingRunListener.multicastInitialEvent(EventPublishingRunListener.java:136)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:81)
at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:64)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:118)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:112)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:63)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:352)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1291)
at com.example.demo.DemoApplication.main(DemoApplication.java:14)
ERROR Class 'org.springframework.web.servlet.handler.AbstractDetectingUrlHandlerMapping' could not be processed by org.zeroturnaround.javarebel.integration.spring.cbp.AbstractDetectingUrlHandlerMappingCBP@jdk.internal.loader.ClassLoaders$AppClassLoader@7a46a697: org.zeroturnaround.bundled.javassist.CannotCompileException: [source error] no such class: HttpServletRequest
at org.zeroturnaround.bundled.javassist.CtNewMethod.make(SourceFile:84)
at org.zeroturnaround.bundled.javassist.CtNewMethod.make(SourceFile:50)
at org.zeroturnaround.javarebel.integration.spring.cbp.AbstractDetectingUrlHandlerMappingCBP.process(AbstractDetectingUrlHandlerMappingCBP.java:31)
at org.zeroturnaround.javarebel.integration.support.JavassistClassBytecodeProcessor.process(SourceFile:137)
at org.zeroturnaround.javarebel.integration.support.CacheAwareJavassistClassBytecodeProcessor.process(SourceFile:34)
at org.zeroturnaround.javarebel.integration.support.JavassistClassBytecodeProcessor.process(SourceFile:83)
at com.zeroturnaround.javarebel.yg.a(SourceFile:413)
at com.zeroturnaround.javarebel.yg.a(SourceFile:340)
at com.zeroturnaround.javarebel.SDKIntegrationImpl.runBytecodeProcessors(SourceFile:44)
at com.zeroturnaround.javarebel.vk.transform(SourceFile:140)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:43009)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:467)
at com.zeroturnaround.javarebel.vs.a(SourceFile:139)
at com.zeroturnaround.javarebel.vs.a(SourceFile:594)
at com.zeroturnaround.javarebel.vk.transform(SourceFile:156)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:43009)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at java.base/java.lang.Class.getDeclaredMethods0(Native Method)
at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3402)
at java.base/java.lang.Class.getDeclaredMethods(Class.java:2504)
at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:465)
at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:360)
at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:374)
at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:374)
at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:417)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.lambda$getTypeForFactoryMethod$1(AbstractAutowireCapableBeanFactory.java:749)
at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1740)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:748)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:681)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:652)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1632)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:559)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:531)
at org.springframework.boot.autoconfigure.condition.OnBeanCondition.collectBeanNamesForType(OnBeanCondition.java:250)
at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:243)
at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:233)
at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchingBeans(OnBeanCondition.java:181)
at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:156)
at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47)
at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:108)
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:183)
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:144)
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:409)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:283)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:344)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:115)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:745)
at org.springframework.context.support.AbstractApplicationContext.__refresh(AbstractApplicationContext.java:565)
at org.springframework.context.support.AbstractApplicationContext.jrLockAndRefresh(AbstractApplicationContext.java:41002)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:42008)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:432)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1291)
at com.example.demo.DemoApplication.main(DemoApplication.java:14)
Caused by: compile error: no such class: HttpServletRequest
at org.zeroturnaround.bundled.javassist.compiler.MemberResolver.searchImports(SourceFile:479)
at org.zeroturnaround.bundled.javassist.compiler.MemberResolver.lookupClass(SourceFile:422)
at org.zeroturnaround.bundled.javassist.compiler.MemberResolver.lookupClassByJvmName(SourceFile:329)
at org.zeroturnaround.bundled.javassist.compiler.MemberResolver.lookupClass(SourceFile:346)
at org.zeroturnaround.bundled.javassist.compiler.MemberResolver.lookupClass(SourceFile:333)
at org.zeroturnaround.bundled.javassist.compiler.MemberCodeGen.makeParamList(SourceFile:1167)
at org.zeroturnaround.bundled.javassist.compiler.Javac.compileMethod(SourceFile:153)
at org.zeroturnaround.bundled.javassist.compiler.Javac.compile(SourceFile:102)
at org.zeroturnaround.bundled.javassist.CtNewMethod.make(SourceFile:79)
... 71 more
ERROR Class 'org.apache.tomcat.util.buf.MessageBytes' could not be processed by org.zeroturnaround.javarebel.integration.catalina.cbp.MessageBytesCBP@jdk.internal.loader.ClassLoaders$AppClassLoader@7a46a697: org.zeroturnaround.bundled.javassist.CannotCompileException: [source error] no such field: hasStrValue
at org.zeroturnaround.bundled.javassist.CtNewMethod.make(SourceFile:84)
at org.zeroturnaround.bundled.javassist.CtNewMethod.make(SourceFile:50)
at org.zeroturnaround.javarebel.integration.catalina.cbp.MessageBytesCBP.process(MessageBytesCBP.java:27)
at org.zeroturnaround.javarebel.integration.support.JavassistClassBytecodeProcessor.process(SourceFile:137)
at org.zeroturnaround.javarebel.integration.support.CacheAwareJavassistClassBytecodeProcessor.process(SourceFile:34)
at org.zeroturnaround.javarebel.integration.support.JavassistClassBytecodeProcessor.process(SourceFile:83)
at com.zeroturnaround.javarebel.yg.a(SourceFile:413)
at com.zeroturnaround.javarebel.yg.a(SourceFile:340)
at com.zeroturnaround.javarebel.SDKIntegrationImpl.runBytecodeProcessors(SourceFile:44)
at com.zeroturnaround.javarebel.vk.transform(SourceFile:140)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:43009)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at org.apache.coyote.Request.<init>(Request.java:98)
at org.apache.coyote.AbstractProcessor.<init>(AbstractProcessor.java:81)
at org.apache.coyote.http11.Http11Processor.<init>(Http11Processor.java:156)
at org.apache.coyote.http11.AbstractHttp11Protocol.createProcessor(AbstractHttp11Protocol.java:703)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:850)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1739)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: compile error: no such field: hasStrValue
at org.zeroturnaround.bundled.javassist.compiler.MemberResolver.lookupField(SourceFile:321)
at org.zeroturnaround.bundled.javassist.compiler.MemberResolver.lookupFieldByJvmName(SourceFile:307)
at org.zeroturnaround.bundled.javassist.compiler.TypeChecker.fieldAccess(SourceFile:904)
at org.zeroturnaround.bundled.javassist.compiler.TypeChecker.atFieldAssign(SourceFile:296)
at org.zeroturnaround.bundled.javassist.compiler.JvstTypeChecker.atFieldAssign(SourceFile:95)
at org.zeroturnaround.bundled.javassist.compiler.TypeChecker.atAssignExpr(SourceFile:255)
at org.zeroturnaround.bundled.javassist.compiler.ast.AssignExpr.accept(SourceFile:43)
at org.zeroturnaround.bundled.javassist.compiler.CodeGen.doTypeCheck(SourceFile:266)
at org.zeroturnaround.bundled.javassist.compiler.CodeGen.atStmnt(SourceFile:362)
at org.zeroturnaround.bundled.javassist.compiler.ast.Stmnt.accept(SourceFile:53)
at org.zeroturnaround.bundled.javassist.compiler.CodeGen.atStmnt(SourceFile:383)
at org.zeroturnaround.bundled.javassist.compiler.ast.Stmnt.accept(SourceFile:53)
at org.zeroturnaround.bundled.javassist.compiler.CodeGen.atIfStmnt(SourceFile:430)
at org.zeroturnaround.bundled.javassist.compiler.CodeGen.atStmnt(SourceFile:387)
at org.zeroturnaround.bundled.javassist.compiler.ast.Stmnt.accept(SourceFile:53)
at org.zeroturnaround.bundled.javassist.compiler.CodeGen.atStmnt(SourceFile:383)
at org.zeroturnaround.bundled.javassist.compiler.ast.Stmnt.accept(SourceFile:53)
at org.zeroturnaround.bundled.javassist.compiler.CodeGen.atMethodBody(SourceFile:321)
at org.zeroturnaround.bundled.javassist.compiler.CodeGen.atMethodDecl(SourceFile:303)
at org.zeroturnaround.bundled.javassist.compiler.ast.MethodDecl.accept(SourceFile:47)
at org.zeroturnaround.bundled.javassist.compiler.Javac.compileMethod(SourceFile:175)
at org.zeroturnaround.bundled.javassist.compiler.Javac.compile(SourceFile:102)
at org.zeroturnaround.bundled.javassist.CtNewMethod.make(SourceFile:79)
... 28 more
<?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>3.0.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springdoc</groupId>
<artifactId>springdoc-openapi-ui</artifactId>
<version>1.6.13</version>
</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>
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
@Bean
public OpenAPI customOpenAPI() {
return new OpenAPI()
.components(new Components())
.info(new Info().title("Test")
.description("Test Description")
.version("1.0.0"));
}
}
@RequestMapping("/api")
@RestController
public class Swagger3RestController {
List<User> users = new ArrayList<User>();
{
users.add(new User(1,"TechGeekNext-User1", "ADMIN", "[email protected]"));
users.add(new User(2,"TechGeekNext-User2", "SUPERVISOR", "[email protected]"));
users.add(new User(3,"TechGeekNext-User3", "USER", "[email protected]"));
users.add(new User(4,"TechGeekNext-User4", "USER", "[email protected]"));
}
@RequestMapping(value = "/getUsers", method = RequestMethod.GET, produces = "application/json")
public List<User> getUsers() {
return users;
}
@RequestMapping(value = "/getUser/{id}", method = RequestMethod.GET, produces = "application/json")
public User getUserById(@PathVariable(value = "id") int id) {
return users.stream().filter(x -> x.getId()==(id)).collect(Collectors.toList()).get(0);
}
@RequestMapping(value = "/getUser/role/{role}", method = RequestMethod.GET, produces = "application/json")
public List<User> getUserByRole(@PathVariable(value = "role") String role) {
return users.stream().filter(x -> x.getRole().equalsIgnoreCase(role))
.collect(Collectors.toList());
}
}
public class User {
private int id;
private String name;
private String role;
private String email;
public User(int id, String name, String role, String email) {
this.id = id;
this.name = name;
this.role = role;
this.email = email;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", name='" + name + '\'' +
", role='" + role + '\'' +
", email='" + email + '\'' +
'}';
}
}
I have encountered the same problem, finally found the dependency is different for Spring Boot 3.
Try this instead of "springdoc-openapi-ui":
<dependency>
<groupId>org.springdoc</groupId>
<artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
<version>2.0.0</version>
</dependency>
source: https://springdoc.org/v2/