spring-mvc - 从过滤器修改Controller中的@RequestBody对象

Question

我想修改一个已经用JacksonMapper填充的对象，并自动向其添加IP和Referrer URL，但是该请求始终为空，因为在属性数组中找不到该请求。难道我做错了什么？

ApiController.java

@RequestMapping(value="/member/follow")
    public @ResponseBody IHttpResponse follow(@RequestBody FollowRequest request) {
        return request.getHttpResponse();
    }

ApiRequestWrapper.js

public class ApiRequestWrapper extends HttpServletRequestWrapper
{
    public ApiRequestWrapper(HttpServletRequest request) {
        super(request);

        if(this.getAttribute("request") instanceof IHttpRequest)
        {
            IHttpRequest httpRequest = (IHttpRequest) this.getAttribute("request");

            if(httpRequest != null)
            {
                httpRequest.setIp(request.getRemoteAddr());
                httpRequest.setReferrer(request.getLocalName());
            }
        }
    }
}

Web.xml

<filter>
    <filter-name>apiFilter</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>

<filter-mapping>
    <filter-name>apiFilter</filter-name>
    <url-pattern>/api/*</url-pattern>
</filter-mapping>

Answer 1

与RequestBody对应的对象是在调用该方法之前创建的-无法在过滤器中获取它。您可以通过实现一个方面来实现您想做的事情。