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import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class MessageService { @Autowired private MessageRepository messageRepository; public Message saveMessage(String username, String content) { Message message = new Message(); message.setUsername(username); message.setContent(content); return messageRepository.save(message); } public List<Message> getAllMessages() { return messageRepository.findAll(); } } import jakarta.persistence.Entity; import jakarta.persistence.GeneratedValue; import jakarta.persistence.GenerationType; import jakarta.persistence.Id; @Entity public class Message { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String username; private String content; // Getters y Setters public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } } import org.springframework.data.jpa.repository.JpaRepository; public interface MessageRepository extends JpaRepository<Message, Long> { }
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