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Error on getting records by id using r2dbc

In sandbox project trying reactive webflux with springboot and postgres. I added r2dbc, created endpoints - get all records and post endpoints work, but appeared problem with requests which use path variable (get one record, or delete by id)
Here is my code:
#SpringBootApplication
#EnableR2dbcAuditing
public class Springboot2Application {
public static void main(String[] args) {
SpringApplication.run(Springboot2Application.class, args);
}
}
Controller:
#RequiredArgsConstructor
#RestController
#RequestMapping("/api/v1")
public class ToDoController {
private final ToDoRepository repository;
#GetMapping(value = "/to-do/{toDoId}", produces = {
MediaType.APPLICATION_JSON_VALUE, MediaType.APPLICATION_XML_VALUE, MediaType.TEXT_XML_VALUE})
public Mono<ResponseEntity<ToDo>> getToDo(#Valid #PathVariable Long toDoId) {
return repository.findById(toDoId)
.map(ResponseEntity::ok);
}
}
repository:
#Repository
public interface ToDoRepository extends R2dbcRepository<ToDo,Long> {
}
entity:
#Data
#RequiredArgsConstructor
#Table(name = "to_do")
public class ToDo {
#Id
private Long id;
#Version
private Long version;
#NotNull
#NotBlank
private String description;
#CreatedDate
private Timestamp created;
#LastModifiedDate
private Timestamp modified;
private boolean completed;
}
r2dbc config:
#Configuration
#EnableR2dbcRepositories(basePackages = "com.springboot2.repository")
public class R2DBCConfig extends AbstractR2dbcConfiguration {
#Bean
public ConnectionFactory connectionFactory() {
return ConnectionFactories.get(
ConnectionFactoryOptions.builder()
.option(DRIVER, "postgresql")
.option(HOST, "localhost")
.option(PORT, 5432)
.option(USER, "admin")
.option(PASSWORD, "admin")
.option(DATABASE, "springdb")
.build());
}
#Bean
ReactiveTransactionManager transactionManager(ConnectionFactory connectionFactory) {
return new R2dbcTransactionManager(connectionFactory);
}
}
And my pom file:
<?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>2.7.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.springboot</groupId>
<artifactId>springboot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot2</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>8</java.version>
<spring-cloud.version>2021.0.3</spring-cloud.version>
</properties>
<dependencies>
<!-- DB,ORM, and plugins-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-r2dbc</artifactId>
</dependency>
<dependency>
<groupId>io.r2dbc</groupId>
<artifactId>r2dbc-postgresql</artifactId>
<version>0.8.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<!-- Reactive libs-->
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</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>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
table creation sql:
CREATE TABLE to_do
(
ID SERIAL primary key ,
version bigint,
description char(255),
created timestamp,
modified timestamp,
completed boolean
);
So when I execute GET http://localhost:8080/api/v1/to-do/3 I get:
java.lang.IllegalStateException: Required identifier property not found for class com.springboot2.domain.ToDo
I tried to define this using #Query in repository, but got same result. I suppose problem can be either in my table, or in entity, but I can't see it. And also seems #Version does not work(every time writes null to table)

The problem may be in wrong import of #Id annotation in your domain.
It should be from package
org.springframework.data.annotation.Id
But in your case it is from package
javax.persistence
Also, consider the naming of fields. As in your domain id is declared as "id", I can see in your create script id as "ID" (in uppercase).

Spring Security – cannot access javax.servlet.Filter

I'm writing the Spring Boot project with basic authentication and authorization using Spring Security. I have a config class which extends the WebSecurityConfigurerAdapter (I wanna get rid of it later, since it's deprecated).
So, my config class looks like this:
#Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication().withUser("spring_user")
.password("password123")
.roles("ADMIN");
}
#Bean
public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
http
.authorizeHttpRequests((authz) -> authz.anyRequest().authenticated())
.httpBasic(Customizer.withDefaults());
return http.build();
}
#Bean
public static PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
}
pom.xml file:
<?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>3.0.1</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.codelib</groupId>
<artifactId>basic-auth-security</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>basic-auth-security</name>
<description>basic-auth-security</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>5.7.3</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Note that I have spring-boot-starter-web dependency.
There is nothing interesting in the rest of the project. When I try to run the app, the following message is shown:
java: cannot access javax.servlet.Filter
class file for javax.servlet.Filter not found
And IDEA redirects me to the config file. (but no lines of code are underlined with red)
What can be the cause of this?

So, the solution was simple. If you're migrating to Spring 6, you should get rid of using the WebSecurityConfigurerAdapter class and instead configure your security without it.
I've written a new configuration (which does the same operations as well as the config provided in the question), and now it looks like this:
#Configuration
#EnableWebSecurity
public class SpringSecurityConfig {
#Bean
public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
http
.authorizeHttpRequests((authorize) -> authorize.anyRequest().authenticated())
.httpBasic(Customizer.withDefaults())
.formLogin(Customizer.withDefaults());
return http.build();
}
#Bean
public UserDetailsService userDetailsService() {
PasswordEncoder encoder = PasswordEncoderFactories.createDelegatingPasswordEncoder();
UserDetails user = User
.withUsername("spring_user")
.password(encoder.encode("password123"))
.roles("USER")
.build();
return new InMemoryUserDetailsManager(user);
}
}
That's the minimal configuration required by Spring Security 6 to provide basic authentication, default password encoder (which is recommended to use) and in-memory user.

How to fix Error creating bean with name 'requestMappingHandlerMapping'

I'm creating a web application using spring-boot with annotation based configuration.
At first, I created a spring application with annotation based config using Hibernate and JPA. It was working fine but then I needed to add spring-boot to my application and now cannot start it. Here is the code:
#SpringBootApplication
#EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
public class Runner {
public static void main(String[] args) {
SpringApplication.run(Runner.class, args);
}
}
#Configuration
#EnableTransactionManagement
#ComponentScans(value = { #ComponentScan("com.alex.pharm.dao"),
#ComponentScan("com.alex.pharm.service") })
public class AppConfig {
#Bean
public LocalEntityManagerFactoryBean geEntityManagerFactoryBean() {
LocalEntityManagerFactoryBean factoryBean = new LocalEntityManagerFactoryBean();
factoryBean.setPersistenceUnitName("LOCAL_PERSISTENCE");
return factoryBean;
}
#Bean
#ConditionalOnMissingBean(type = "JpaTransactionManager")
public JpaTransactionManager geJpaTransactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(geEntityManagerFactoryBean().getObject());
return transactionManager;
}
}
#RestController
public class HelloController {
#RequestMapping("/")
public String index() {
return "Greetings from Spring Boot!";
}
}
<groupId>com.sachatol.pharmacy</groupId>
<artifactId>pharmacyWebStore</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.1</version>
</dependency><!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.13</version>
</dependency>
<!-- Hibernate 5.2.9 Final -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.9.Final</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- Spring ORM -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<build>
<sourceDirectory>src/main/java</sourceDirectory>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
But when I try to run it I get the following exception:
ConfigServletWebServerApplicationContext : Exception encountered during context initialization
- cancelling refresh attempt:org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'requestMappingHandlerMapping'
defined in class path resource
[org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]:
Initialization of bean failed; nested exception is java.lang.NoSuchMethodError:
org.springframework.web.servlet.handler.AbstractHandlerMapping.obtainApplicationContext()
Lorg/springframework/context/ApplicationContext;
How can I fix it?

Issue found - I used the old version for spring-context in pom (4.3.7.RELEASE) which override the one that spring-boot has and was the reason of NoSuchMethodError. So spring-context dependency was old and obsolete after removing or changing it to newer version (5.0.3) application started fine

Your #RequestMapping seems missing some parts, try with something like that:
#RequestMapping(value = "/", method = RequestMethod.GET)

This also happens if you have two methods with same request mapping values. Make sure you have unique RequestMapping values.

In your request mapping, you have incorrectly used :
#RequestMapping("/")
Instead, use this mapping to specify the end-point and the request-method like this :
#RequestMapping(value = "/", method = RequestMethod.GET)
Hope it will solve your problem.

#QuerydslPredicate throwing exception

I'm trying to understand how to use #QuerydslPredicate but my test API fails when it is called:
Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.IllegalStateException: No primary or default constructor found for interface com.querydsl.core.types.Predicate] with root cause
java.lang.NoSuchMethodException: com.querydsl.core.types.Predicate.< init >()
This is the method in my Controller class:
#ResponseBody
#RequestMapping(value = "/user/query", method = RequestMethod.GET)
public Iterable<User> getByCriteria(#QuerydslPredicate(root = User.class) Predicate predicate)
{
return this.userDao.getByCriteria(predicate);
}
I've used this spring blog post and this example to try and implement my API but I don't understand what I am doing wrong.
Edit #1
pom.xml:
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>email-encrypt</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.RELEASE</version>
</parent>
<name>email-encrypt</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<querydsl.version>4.1.4</querydsl.version>
<springfox.version>2.6.1</springfox.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>1.59</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcpkix-jdk15on</artifactId>
<version>1.59</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcmail-jdk15on</artifactId>
<version>1.59</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-apt</artifactId>
<version>${querydsl.version}</version>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-jpa</artifactId>
<version>${querydsl.version}</version>
</dependency>
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derby</artifactId>
<version>10.14.1.0</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>${springfox.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>${springfox.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.20</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.20</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>com.mysema.maven</groupId>
<artifactId>apt-maven-plugin</artifactId>
<version>1.1.3</version>
<executions>
<execution>
<goals>
<goal>process</goal>
</goals>
<configuration>
<outputDirectory>${build.directory}/generated-sources/java</outputDirectory>
<processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
Edit #2
I've create a sample project here.

If you comment out the #Configuration on the swagger configuration class it will work. I'm still trying to understand why, I guess that with that annotation the way spring loads the configuration is different and this is causing the issue.
//#Configuration
#EnableSwagger2
public class SwaggerConfiguration extends WebMvcConfigurationSupport

I think your problem lies in your pom.xml. Be sure you are using compatible version of query-dsl. For instance if you use spring-data-jpa 2.0.8, you should use querydsl-* 4.1.4+
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>2.0.8.RELEASE</version>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-*</artifactId>
<version>4.1.4</version>
</dependency>
you can check in maven repository which version you need
Edit 1 try to add the querydsl-core to your maven:
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-core</artifactId>
<version>4.1.4</version>
</dependency>

Extending on #cristobalrosa's answer, this might be due to web application not being configured by Spring Boot. For instance my project also had a SwaggerConfig extending WebMvcConfigurationSupport:
#Configuration
#EnableSwagger2
public class SwaggerConfig extends WebMvcConfigurationSupport {
// Docket bean
#Override
protected void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("swagger-ui.html").addResourceLocations("classpath:/META-INF/resources/");
}
}
I removed the inheritance and manual resource handlers, and it works fine now.
Note: In addition to WebMvcConfigurationSupport, things like #EnableWebMvc & WebMvcConfigurer might also lead to Spring Boot's web autoconfiguration not being used.
Sources: Swagger Issue comment

Same error with me.
I just want to share the situation to may give some hints. So look at my config and dependencies and read articles that I linked. try #EnableWebMvc instead of 'WebMvcConfigurationSupport'
Error
java.lang.IllegalStateException: No primary or default constructor found for interface com.querydsl.core.types.Predicate
Caused by: java.lang.NoSuchMethodException: com.querydsl.core.types.Predicate.<init>()
at java.base/java.lang.Class.getConstructor0(Class.java:3427)
at java.base/java.lang.Class.getDeclaredConstructor(Class.java:2631)
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:216)
dependencies
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation "org.springframework.data:spring-data-commons"
implementation "com.querydsl:querydsl-apt:4.3.1"
implementation "com.querydsl:querydsl-jpa:4.3.1"
}
Querydsl web support is available in spring-data-commons since 1.11
from https://www.baeldung.com/rest-api-search-querydsl-web-in-spring-data-jpa
Web Mvc Config
In my case, I have to implements WebMvcConfigurer and add #EnableWebMvc instead of WebMvcConfigurationSupport. I don't know why #EnableWebMvc is needed even I had extended WebMvcConfigurationSupport with #Configuration. I just guess WebMvcConfigurationSupport doesn't implements init() of Predicate.
#Configuration
//#EnableSpringDataWebSupport // <-- doesn't necessary for me
#EnableSwagger2
#EnableWebMvc // <-- add
public class SwaggerConfig implements WebMvcConfigurer { //<-- instead of 'WebMvcConfigurationSupport'
...
}
QueryDSL web support From Spring document
The feature will be automatically enabled along #EnableSpringDataWebSupport when Querydsl is found on the classpath.
https://docs.spring.io/spring-data/jpa/docs/1.9.0.RELEASE/reference/html/#core.web.type-safe
Controller
#GetMapping
public List<InputMethodDto.Response> getInputMethodTypeList(
#QuerydslPredicate(root = InputMethod.class) Predicate predicate) {
return service.getInputMethodList(predicate);
}
Repository
public interface InputMethodRepository extends JpaRepository<yourEntity, Long>, QuerydslPredicateExecutor<yourEntity>, QuerydslBinderCustomizer<QyourEntity> {
#Override
default void customize(final QuerydslBindings bindings, final QyourEntity root) {
bindings.bind(String.class).first((StringPath path, String value)-> path.eq(value));
}
}

Spring boot jsp is not rendering

Jsp is shown as default text image
My index.jsp
<%# page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h1>HelloWorld</h1>
</body>
</html>
My index controller
#Controller
public class IndexController {
#RequestMapping("/")
public String index(Model model) {
return "index";
}
}
Web Config
#Configuration
#EnableWebMvc
#ComponentScan("ru.hyndo.web")
public class WebConfig extends WebMvcConfigurerAdapter {
#Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
resolver.setViewClass(JstlView.class);
return resolver;
}
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
}
web app initializer
public class SpittrWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
#Override
protected String[] getServletMappings() {
return new String[] { "/" };
}
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class<?>[] { RootConfig.class };
}
#Override
protected Class<?>[] getServletConfigClasses() {
return new Class<?>[] { WebConfig.class };
}
}
RootConfig
#Configuration
#ComponentScan(basePackages = { "ru.hyndo.web" }, excludeFilters = {
#ComponentScan.Filter(type = FilterType.ANNOTATION, value = EnableWebMvc.class) })
public class RootConfig {
}
Application
#SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
pom.xml
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>javax.servlet.jsp.jstl-api</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</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>
I tried everything but nothing worked. If you can give some working examples pls give.
Also if you need my project structure in idea - http://prntscr.com/iaemoc
I am stuck here and it feels like I won't ever make it :( I looked at huge amount of tutorials and as many questions on StackOverflow as I could found with no help.
Any advice is very much appreciated!

In a war project, JSP pages are served from src/main/webapp/WEB-INF/.
In a Jar project, JSP pages
cannot
simply be served from webapp location or from src/main/resources/. That's because of the limitation stated in boot ref docs.
The location src/main/webapp/WEB-INF may work in exploded form but should be avoided. From boot ref docs:
Do not use the src/main/webapp directory if your application will be packaged as a jar. Although this directory is a common standard, it will only work with war packaging and it will be silently ignored by most build tools if you generate a jar.
Fortunately there is another option for a Jar project: Servlet 3.0 specification allows to have dynamic pages in src/main/resources/META-INF/resources/ (Please check out an example here).
SOURCE