[英]Spring Boot - fetching data from another microservice
I am using Spring Boot for my API.我正在为我的 API 使用 Spring 引导。 I am rewriting my API, to adopt the microservices architecture.
我正在重写我的 API,以采用微服务架构。
I have 2 classes:我有 2 节课:
1) Product 1) 产品
2) Ingredient 2) 成分
My Code:我的代码:
Here is my Product class:这是我的产品class:
public class Product{
private String name;
@ElementCollection
private List<Long> productIngredients = new ArrayList<>(); //Ingredient
private Double quantity = 0.0;
private Double productCost = 0.0;
}
Here is my Ingredient class:这是我的成分class:
public class Ingredient{
private String name;
private String unit;
private Double quantity = 0.0;
}
In the Product microservice, I am doing an API call to the Ingredient microservice:在产品微服务中,我正在对成分微服务进行 API 调用:
// Making a call to the Ingredients microservice from the product microservice
WebClient myWebClient = WebClient.create("http://localhost:8090/api");
@GetMapping("/ingredients/get")
public Flux<Product> getIngredients(){
return myWebClient
.get()
.uri("/ingredients/ingredient/list")
.retrieve()
.bodyToFlux(Product.class);
}
However, the above getIngredients() method is not working.但是,上面的 getIngredients() 方法不起作用。
My Question:我的问题:
I want to fetch data from the Ingredient microservice, however, I get the following error:我想从成分微服务中获取数据,但是,我收到以下错误:
"error": "Internal Server Error", "trace": "org.springframework.web.reactive.function.client.WebClientRequestException: Connection refused: no further information: localhost/127.0.0.1:80; nested exception is io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: no further information: localhost/127.0.0.1:80\r\n\tat org.springframework.web.reactive.function.client.ExchangeFunctions$DefaultExchangeFunction.lambda$wrapException$9(ExchangeFunctions.java:141)\r\n\tSuppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: \nError has been observed at the following site(s):\n\t|_ checkpoint ⇢ Request to GET http://localhost/api/components/component/list [DefaultWebClient]\nStack trace:\r\n\t\tat org.springframework.web.reactive.ZC1C425268E68385D1AB5074C
“错误”:“内部服务器错误”,“跟踪”:“org.springframework.web.reactive.function.client.WebClientRequestException:连接被拒绝:没有更多信息:localhost/127.0.0.1:80;嵌套异常是io.netty .channel.AbstractChannel$AnnotatedConnectException:连接被拒绝:没有更多信息:localhost/127.0.0.1:80\r\n\tat org.springframework.web.reactive.function.client.ExchangeFunction(9$Functions.client.ExchangeFunctionFunction java:141)\r\n\tSuppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: \n在以下站点观察到错误:\n\t|_ checkpoint ⇢ Request to GET Z80791B3AE7002FACB88C2468876D /api/components/component/list [DefaultWebClient]\n堆栈跟踪:\r\n\t\tat org.springframework.web.reactive.ZC1C425268E68385D1AB5074C 17A94F14Z.client.
17A94F14Z.client。
Connection refused: no further information: localhost/127.0.0.1:80
, exception says that: Connection refused: no further information: localhost/127.0.0.1:80
,异常说:
myWebClient
instance is the one that is configured with the correct URL?myWebClient
实例是配置了正确的 URL 的实例吗?
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