[FIXED] Custom validation and javax.validation.constraints doesnt work

Issue

I implement my own validation to check value of capacity od Budget entity in my SpringApp. Code below :

Annotation :

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.PARAMETER})
@Constraint(validatedBy = {CapacityValidator.class})
public @interface Capacity {

String message() default "Capacity over limit. Maximum value 9999";
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
}

CapacityValidator class :

import com.example.CapacityGurdian.annotation.Capacity;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

public class CapacityValidator implements ConstraintValidator<Capacity, Float> {

private final static float MAX_CAPACITY_VALUE = 9999;

@Override
public boolean isValid(Float value, ConstraintValidatorContext constraintValidatorContext) {
    return MAX_CAPACITY_VALUE < value;
 }
}

Then I used it in REST controller like this :

@RestController
@RequestMapping("/budgets")
@Validated
@Api(
    value = "GrantsBudgetController",
    tags = "Capacity controller for budget"
)
public class BudgetController {

BudgetService budgetService;

@Autowired
public BudgetController(BudgetService budgetService) {
  
    this.budgetService = budgetService;
}

@PutMapping({"/budget/{id}/capacity/{value}"})
@ApiOperation(value = "Updates capacity od specified budget by id",
        notes = "Adds value to capacity of specified budget",
        response = Budget.class)
public ResponseEntity<Budget> updateBudget(
        @ApiParam(value = "Id of updated budget") @PathVariable @NotNull Long id,
        @ApiParam(value = "Value which will be added to current capacity") @PathVariable 
@Capacity Float value) {
    return ResponseEntity.ok(budgetService.addCapacityById(id,value));
}

This code should work but not this time. Then I decided to check if standard javax.validations work by adding @Size( max = 3) and @NotEmpty on String property. Unfortunetly it also doesnt work. I checked Annotation processor in my intellij and it is set fine. Do someone know how to turn on my validations ?

Code of 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>
<groupId>com.example</groupId>
<artifactId>CapacityGurdian</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>CapacityGurdian</name>
<description>CapacityGuardianApp</description>
<properties>
    <java.version>11</java.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-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>2.9.2</version>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>2.9.2</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.kafka</groupId>
        <artifactId>spring-kafka</artifactId>
        <version>2.7.2</version>
    </dependency>
    <dependency>
        <groupId>javax.validation</groupId>
        <artifactId>validation-api</artifactId>
        <version>2.0.1.Final</version>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.20</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
        <scope>test</scope>
    </dependency>

<!--        JPA - DATABASE-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <version>1.4.200</version>
    </dependency>
</dependencies>

<build>
    <plugins>

        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <addResources>true</addResources>
            </configuration>
        </plugin>

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.22.0</version>
        </plugin>

    </plugins>

</build>
</project>

Solution

Your dependencies don't contain hibernate-validator, try to add it like that:

<dependency>
    <groupId>org.hibernate.validator</groupId>
    <artifactId>hibernate-validator</artifactId>
</dependency>

Answered By - Dmitrii Bykov