springcloud 实战 feign使用中遇到的相关问题

1.使用feign客户端调用其他微服务时，session没有传递成功，sessionId不一样。

/** * @author xbchenf * @date 2018-10-27 16:35:52 * @description 通过拦截器，将head补上，避免session丢失 */@Configurationpublic class FeignConfiguration implements RequestInterceptor{    private final Logger logger = LoggerFactory.getLogger(FeignConfiguration.class);    @Override    public void apply(RequestTemplate template) {        RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();        if (requestAttributes == null) {            return;        }        HttpServletRequest request = ((ServletRequestAttributes) requestAttributes).getRequest();        Enumeration
     
       headerNames = request.getHeaderNames();        if (headerNames != null) {            while (headerNames.hasMoreElements()) {                String name = headerNames.nextElement();                Enumeration
      
        values = request.getHeaders(name);                while (values.hasMoreElements()) {                    String value = values.nextElement();                    logger.warn("name:"+name+";value:"+value);                    template.header(name, value);                }            }        }    }}
      
     

　　

2.使用feign客户端调用其他微服务时，发送POST请求时，对象信息没有传递成功。

关键在于加上注解：@RequestBody

feign客户端：

@FeignClient(name = "mpmt-user")public interface PersonFeignClient {  @GetMapping("/feign/testGet/{id}")  public ResponseEntity
     
       testGet(@PathVariable(value = "id") Integer id);  @PostMapping("/feign/testPost")  public ResponseEntity
      
        testPost(@RequestBody Person person);}
      
     

　　

微服务服务端：mpmt-user

@RestController@RequestMapping("/feign")public class FeignController {    private final Logger logger = Logger.getLogger(FeignController.class);    @GetMapping("/testGet/{id}")    public ResponseEntity
     
       testGet(@PathVariable(value = "id") Integer id,HttpServletRequest request) {        JsonResult r = new JsonResult();        try {            logger.info("sessionid:"+request.getSession().getId());            User user = (User)request.getSession().getAttribute("sessionUser");            logger.info("userId:"+user.getId());            r.setResult(user);            r.setStatus("200");        } catch (Exception e) {            r.setResult(e.getClass().getName() + ":" + e.getMessage());            r.setStatus("error");            e.printStackTrace();        }        return ResponseEntity.ok(r);    }    /**     * 添加用户     * 提供给后端feign调用的接口，post请求都要使用@RequestBody ，包括feign中定义的接口     * @param person     * @return     */    @PostMapping("/testPost")    public ResponseEntity
      
        testPost(@RequestBody Person person,HttpServletRequest request) {        JsonResult r = new JsonResult();        try {            logger.info("sessionid:"+request.getSession().getId());            User user = (User)request.getSession().getAttribute("sessionUser");            logger.info("userId:"+user.getId());            r.setResult(person);        } catch (Exception e) {            r.setResult(e.getClass().getName() + ":" + e.getMessage());            r.setStatus("error");            e.printStackTrace();        }        return ResponseEntity.ok(r);    }}
      
     

 

3.使用feign客户端调用其他微服务时，报错超时：e=feign.RetryableException: Read timed out executing POST

ribbon.ReadTimeout=60000 ribbon.ConnectTimeout=60000