如何在Spring Websocket中为@Header值创建自定义转换器/反序列化程序

import org.springframework.messaging.Message;
import org.springframework.messaging.MessageHeaders;
import org.springframework.messaging.simp.annotation.support.HeaderMethodArgumentResolver;
import org.springframework.messaging.simp.annotation.support.MessagingAnnotationUtils;
import org.springframework.util.Assert;

public class CustomHeaderMethodArgumentResolver implements HeaderMethodArgumentResolver {

    @Override
    public boolean supportsParameter(MethodParameter parameter) {
        return parameter.hasParameterAnnotation(CustomHeader.class);
    }

    @Override
    public Object resolveArgument(MethodParameter parameter, Message<?> message) throws Exception {
        Assert.state(message != null, "No message available");
        MessageHeaders headers = message.getHeaders();
        String headerName = MessagingAnnotationUtils.getHeaderName(parameter);
        Object headerValue = headers.get(headerName);
        if (headerValue == null) {
            return null;
        }
        // 自定义转换逻辑，将headerValue转换为目标类型的对象
        // ...
        return convertedValue;
    }
}

<mvc:annotation-driven>
    <mvc:message-converters>
        <bean class="org.springframework.messaging.converter.MappingJackson2MessageConverter">
            <property name="objectMapper" ref="jacksonObjectMapper"/>
        </bean>
    </mvc:message-converters>
    <mvc:argument-resolvers>
        <bean class="com.example.CustomHeaderMethodArgumentResolver"/>
    </mvc:argument-resolvers>
</mvc:annotation-driven>

@MessageMapping("/example")
public void handleExampleMessage(@CustomHeader("customHeader") CustomType customHeader) {
    // 处理消息
}