Já consultei o chatGPT, mas não consegui desvendar o problema, suspeito de incompatibilidade do Spring AI com Open AI.

Ao rodar a aplicação no primeiro teste apareceu o bug:

Error while extracting response for type [org.springframework.ai.openai.api.OpenAiApi$ChatCompletion] and content type [application/json;charset=utf-8]

Meu pom: 4.0.0 org.springframework.boot spring-boot-starter-parent 3.3.7 br.com.alura ecomart 0.0.1-SNAPSHOT ecomart Demo project for Spring Boot <java.version>21</java.version> <spring-ai.version>1.0.0-M4</spring-ai.version> org.springframework.boot spring-boot-starter-web org.springframework.ai spring-ai-openai-spring-boot-starter

    <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>
</dependencies>
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.ai</groupId>
            <artifactId>spring-ai-bom</artifactId>
            <version>${spring-ai.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>
<repositories>
    <repository>
        <id>spring-milestones</id>
        <name>Spring Milestones</name>
        <url>https://repo.spring.io/milestone</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
</repositories>

classe controller:

import org.springframework.ai.chat.client.ChatClient; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;

@RestController @RequestMapping("gerador") public class GeradorDeProdutosController {

private final ChatClient chatClient;

public GeradorDeProdutosController(ChatClient.Builder chatClientBuilder) {
    this.chatClient = chatClientBuilder.build();
}

@GetMapping
public String gerarProdutos(){

    var pergunta = "Gere 5 produtos ecológicos";

    return this.chatClient.prompt()
            .user(pergunta)
            .call()
            .content();
}

}