feign 出现 too many bytes written executing xx Or incomplete output stream executing xx

问题：通过FeignClient调用第三方接口时，出现如下报错

incomplete output stream executing xxx 或者 too many bytes written executing POST

解决办法：自定义feign配置，忽略content-length字段。

解释：跳过 content-length，避免追加参数导致content-length值与实际长度不一样

@Configuration
public class FeignConfiguration implements RequestInterceptor {

    @Override
    public void apply(RequestTemplate requestTemplate) {
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder
                .getRequestAttributes();
        if (attributes == null) {
            return;
        }
        HttpServletRequest request = attributes.getRequest();
        Enumeration<String> headerNames = request.getHeaderNames();
        if (headerNames != null) {
            while (headerNames.hasMoreElements()) {
                String name = headerNames.nextElement();
                String values = request.getHeader(name);
                //跳过 content-length，避免追加参数导致content-length值与实际长度不一样
                if (name.equals("content-length")) {
                    continue;
                }
                requestTemplate.header(name, values);
            }
        }

        requestTemplate.header("Mlink-URL", "mlinkClient");
    }

}