OpenFeign超时控制

亦凉 2023-10-05 12:06 35阅读 0赞

#### OpenFeign超时控制 ####

*  超时设置，故意设置超时演示出错情况
 *  什么是超时控制
 *  YML文件里开启OpenFeign客户端超时控制

**为了方便只演示7001/8001，不使用集群，但是是同理的**

## 超时设置，故意设置超时演示出错情况 ##

1、服务提供方8001故意写暂停程序

@GetMapping(value = "/payment/feign/timeout")
    public String paymentFeignTimeout(){
        
        try {
         TimeUnit.SECONDS.sleep(3); }catch (Exception e) {
        e.printStackTrace();}
        return serverPort;
    }

2、服务消费方80添加超时方法PaymentFeignService

@Component
    @FeignClient(value = "CLOUD-PAYMENT-SERVICE")
    public interface PaymentFeignService {
        
        /**
         * 相当于在消费者Controller和生产者Controller中加了一层Service
         *
         * Controller(consumer)--->Service(Feign)-->Controller(Provider)
         * @param id
         * @return
         */
        @GetMapping(value = "/payment/get/{id}")
        public CommonResult getPaymentById(@PathVariable("id") Long id);
    
    	@GetMapping(value = "/payment/feign/timeout")
    	public String paymentFeignTimeout();
     
    
    }

3、服务消费方80添加超时方法OrderFeignController

@GetMapping(value = "/consumer/payment/feign/timeout")
    public String paymentFeignTimeout(){
        
       return paymentFeignService.paymentFeignTimeout();
    }

4、http://localhost/consumer/payment/feign/timeout

错误页面  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxMDQwNTU5_size_16_color_FFFFFF_t_70_pic_center]

## 什么是超时控制 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxMDQwNTU5_size_16_color_FFFFFF_t_70_pic_center 1]

**OpenFeign默认等待一秒钟，超过后报错**

--------------------

**OpenFeign默认支持Ribbon**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxMDQwNTU5_size_16_color_FFFFFF_t_70_pic_center 2]

## YML文件里开启OpenFeign客户端超时控制 ##

ribbon:
      ReadTimeout:  5000
      ConnectTimeout: 5000

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