<div th:if="${user != null}">
        <img th:src="${user.image}" alt="Image de profil" width="400px"/>
    </div>

<div th:if="${user != null}">
        <img th:src="${user.image}" alt="Image de profil" width="400px"/>
    </div>

 @NotEmpty(message = "This field cannot be empty")
    private String image;

/**
     * @return String return the image
     */
    public String getImage() {
        return image;
    }

    /**
     * @param image the image to set
     */
    public void setImage(String image) {
        this.image = image;
    }

 @NotEmpty(message = "This field cannot be empty")
    private String image;

/**
     * @return String return the image
     */
    public String getImage() {
        return image;
    }

    /**
     * @param image the image to set
     */
    public void setImage(String image) {
        this.image = image;
    }