Feign报错feign.RetryableException: too many bytes written executing

SpringCloud Feign调用报错feign.RetryableException: too many bytes written executing

SpringCloud Feign调用报错feign.RetryableException: too many bytes written executing

版本:

SpringCloud : Greenwich.SR5

SpringBoot : 2.1.9.RELEASE

SpringCloudAlibaba : 2.1.0.RELEASE

看到这个错误第一时间我也是打开百度/Goole 但是搜出来的，无一例外基本都是添加feign增强包 feign-httpclient 或者feign-okhttp 包;

无奈之下只好一步步debug 发现是把request.body 写入到流时发生的错误.java.io.IOException: insufficient data written

后面搜到body是跟Content-Length 有关系的… 附上博主链接 https://my.oschina.net/u/4410077/blog/3323588 看了之后原来发生这个问题的原因跟我一样，因为服务之间调用需要携带一些用户信息之类的所以实现了Feign的RequestInterceptor拦截器复制请求头，复制的时候是所有头都复制的,可能导致Content-length长度跟body不一致. 所以只需要判断如果是Content-length就跳过

原配置 :

/*** @author Joe* createTime 2020/06/10 18:13*/
@Log4j2
@Configuration
public class FeignConfiguration implements RequestInterceptor {@Overridepublic void apply(RequestTemplate template) {ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();HttpServletRequest request = attributes.getRequest();Enumeration<String> headerNames = request.getHeaderNames();if (headerNames != null) {while (headerNames.hasMoreElements()) {String name = headerNames.nextElement();String values = request.getHeader(name);template.header(name, values);}} else {log.info("feign interceptor error header:{}", template);}}
}

修改之后:

/*** @author Joe* createTime 2020/06/10 18:13*/
@Log4j2
@Configuration
public class FeignConfiguration implements RequestInterceptor {@Overridepublic void apply(RequestTemplate template) {ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();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-lengthif (name.equals("content-length")){continue;}template.header(name, values);}} else {log.info("feign interceptor error header:{}", template);}}
}

content-length详解参考文章：https://juejin.im/post/5d772cb4e51d453b5f1a0502

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Feign报错feign.RetryableException: too many bytes written executing

Feign报错feign.RetryableException: too many bytes written executing

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