显示超过h:message的多个字段的JSF验证错误

// 自定义验证器组件
@FacesValidator("customValidator")
public class CustomValidator implements Validator {

    @Override
    public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
        // 验证逻辑
        // 如果验证失败，将错误信息存储在FacesContext中
        FacesMessage message = new FacesMessage("Validation Error", "错误信息");
        message.setSeverity(FacesMessage.SEVERITY_ERROR);
        context.addMessage(component.getClientId(context), message);
    }
}

<!-- JSF页面 -->
<h:form>
    <h:panelGrid columns="2">
        <h:outputLabel for="field1" value="字段1" />
        <h:inputText id="field1" value="#{bean.field1}" required="true" validator="customValidator" />

        <h:outputLabel for="field2" value="字段2" />
        <h:inputText id="field2" value="#{bean.field2}" required="true" validator="customValidator" />

        <!-- 显示验证错误信息 -->
        <h:panelGrid columns="1">
            <h:messages globalOnly="true" style="color: red" />
        </h:panelGrid>

        <h:commandButton value="提交" action="#{bean.submit}" />
    </h:panelGrid>
</h:form>