Spring boot won't recognize an added dependency

Question

I am trying to add the ModelMapper dependency via pom.xml , however, when I try create a new instance of modelMapper it doesn't recognize the dependency and instead tries to import modelMapper from Swagger . I have tried adding it manually and still I get the same problem.

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                -->

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.12</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com</groupId>
    <artifactId>golden.scent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>something</name>
    <description>Demo project for Spring Boot</description>

    <!--                 PROPERTIES                -->

    <properties>
        <java.version>11</java.version>
    </properties>

    <!--                 DEPENDENCIES                 -->

    <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-validation</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>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </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>
        <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>
        <!-- https://mvnrepository.com/artifact/org.modelmapper/modelmapper -->
        <dependency>
            <groupId>org.modelmapper</groupId>
            <artifactId>modelmapper</artifactId>
            <version>2.3.8</version>
        </dependency>


    </dependencies>

    <!--                 BUILD                 -->

    <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>

Configuration

import springfox.documentation.swagger2.mappers.ModelMapper;


@Configuration
public class Config {

    @Bean
    public ModelMapper modelMapper(){
        return new ModelMapper()


    }
}

Tried using the invalidate cache/restart which usually solves the problem. not this time.

I am trying to use DTO beans and do not want to write a mapper manually.

I have tried looking for solutions but could not find one yet.

Thanks

Answer 1

Change your class to the following:

import org.modelmapper.ModelMapper;

@Configuration
public class Config {
    @Bean
    public ModelMapper modelMapper(){
        return new ModelMapper();
    }
}

If with this you can't compile your code, you might need to delete org/modelmapper folder in the .m2 folder in your machine and reload your maven dependencies again.

Answer 2

You will have to go to your.m2 folder on your machine depending if you are using windows it should be in C:/Users/username/.m2 and delete the content of that folder.

Of course, you need to be sure that you have proper dependencies of Swagger in your pom.xml that are complaining about, if you do have all dependencies, you can go to the next step.

Go back to your IntelliJ and you can run two maven commands ( clean, install ), you can either run them from the terminal of your IntelliJ, or you can run them from maven UI which is located on the top right side of the IntelliJ, next to database UI.