checkArgument(argv[urlIndex] != null, "URI parameter %s was null", urlIndex); mutable.target(String.valueOf(argv[urlIndex])); } //…… } 1. 2. 3. 4. 5. 6. 7. 8. 9. FeignClient解析 FeignClient注解我们比较关注的是几个属性; value或者name 这里是设置请求的应用,当url和参数的URI未...
url在哪指定的呢，就是在@FeignClient注解中指定的url属性，这个属性是主要是进行feign直连，什么叫直连...
urlIndex(); checkArgument(argv[urlIndex] != null, "URI parameter %s was null", urlIndex); mutable.target(String.valueOf(argv[urlIndex])); } //…… } FeignClient解析 FeignClient注解我们比较关注的是几个属性; value或者name这里是设置请求的应用,当url和参数的URI未设置时,这里生效即服务注册名称...
@FeignClient("another-service")public interface MyFeignClient {@GetMapping("/foo/bar")Foo<Bar> get(@RequestParam Foo bar);} 会发现项目启动抛出异常 Caused by: java.lang.IllegalStateException: RequestParam.value() was empty on parameter 0 说是没添加参数名,好我们添加一下 @FeignClient("another-s...
executeAndDecode(RequestTemplate template)方法里response = this.client.execute(request, this.options)发起请求,this.client默认情况下是LoadBalancerFeignClient,默认的httpClient是java.net.HttpURLConnection,也通过@Conditional系列注解实现了对org.apache.http.impl.client.CloseableHttpClient和okhttp3.OkHttpClient的...
throw new IOException("URL '" + request.url() + "' couldn't be parsed into a URI", e); } HttpResponse httpResponse = client.execute(httpUriRequest); return toFeignResponse(httpResponse); } HttpUriRequest toHttpUriRequest(Request request, Request.Options options) throws ...
文字描述:使用FeignClient来进行远程调用时,如果POST请求中有查询参数并且没有请求实体(body为空),那么查询参数被丢失,服务提供者获取不到查询参数的值。 代码描述:B的值被丢失,服务提供者获取不到B的值 @FeignClient(name = "a-service", configuration = FeignConfiguration.class)publicinterfaceACall{@RequestMappin...
Caused by:java.lang.IllegalStateException:RequestParam.value()was empty on parameter0 说是没添加参数名,好我们添加一下 代码语言:javascript 复制 @FeignClient("another-service")publicinterfaceMyFeignClient{@GetMapping("/foo/bar")Foo<Bar>get(@RequestParam("bar")Foo bar);} ...
查询参数: 可以将参数添加到URL的查询字符串中,并使用@RequestParam注解来获取参数的值。例如: @FeignClient(name ="example-service") public interface ExampleFeignClient {@PostMapping("/example") void postWithQueryParameter(@RequestParam("param") String param,@RequestBodyObject body); ...
Caused by: java.lang.IllegalStateException: RequestParam.value() was empty on parameter 0 看提示很明显是参数问题,RequestParam注解的第一个参数是不能为空 简单粗暴的把RequestParam注解去掉,启动成功。再试试加上注解的描述 修改成: @PostMapping(value = "url") ...