我正在从事Spring WebFlux项目,
我正在调用第三方API以使用WebClient创建实体。
如果WebClient得到4xx作为响应代码,我想保留错误。
下面是请求第三方API的代码
API。Java语言
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.web.reactive.function.client.ClientResponse;
import org.springframework.web.reactive.function.client.WebClient;
import reactor.core.publisher.Mono;
class API {
public Mono<Response> create(Request req) {
return WebClient.builder()
.baseUrl("http://localhost:8080")
.defaultHeader(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON_VALUE)
.build()
.post()
.uri("/v1/student")
.contentType(MediaType.APPLICATION_JSON)
.accept(MediaType.APPLICATION_JSON)
.bodyValue(req.getData())
.retrieve()
.onStatus(HttpStatus::is4xxClientError, response -> handleError(response))
.bodyToMono(Response.class);
}
private Mono<? extends ClientException> handleError(ClientResponse response) {
return response
.bodyToMono(ErrorResponse.class)
.map(errorResponse -> new ClientException(errorResponse));
}
}
如果服务器返回4xx响应,那么我只是将其转换为特定的错误响应。
调用方法如下
APIService。Java语言
public class APIService {
API api;
private ResponseHandler responseHandler;
ErrorProcessor errorProcessor;
public APIService(API api, ResponseHandler responseHandler, ErrorProcessor errorProcessor) {
this.api = api;
this.responseHandler = responseHandler;
this.errorProcessor = errorProcessor;
}
public void process(Request request) {
api.create(request)
.doOnSuccess(response -> responseHandler.process(response))
.doOnError(
throwable -> {
ClientException ce = (ClientException) throwable;
errorProcessor.process(ce);
})
.block();
}
}
要求Java语言
public class Request {
final Map<String, Integer> data;
public Request(int id) {
data = new HashMap<>();
data.put("counter", id);
}
public Map<String, Integer> getData() {
return data;
}
}
Response.java
public class Response {
int id;
public Response(int id) {
this.id = id;
}
}
负责人。Java语言
import java.util.logging.Logger;
public class ResponseHandler {
Logger log = Logger.getLogger(ResponseHandler.class.getName());
public void process(Response response) {
log.info("Id=" + response.id);
}
}
异常处理类
客户xception.java
public class ClientException extends RuntimeException {
private ErrorResponse errorResponse;
public ClientException(ErrorResponse errorResponse) {
this.errorResponse = errorResponse;
}
public ErrorResponse getErrorResponse() {
return errorResponse;
}
}
错误处理器
错误处理器。Java语言
import java.util.logging.Logger;
public class ErrorProcessor {
Logger log = Logger.getLogger(ErrorProcessor.class.getName());
public void process(ClientException ce) {
log.info(ce.getErrorResponse().getErrorCode() + "=" + ce.getErrorResponse().getMessage());
}
}
API调用返回的错误响应
错误响应。Java语言
public class ErrorResponse {
String errorCode;
String message;
public ErrorResponse(String errorCode, String message) {
this.errorCode = errorCode;
this.message = message;
}
public String getErrorCode() {
return errorCode;
}
public String getMessage() {
return message;
}
}
在写JUnit时如下所示
APITest。Java语言
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.junit.jupiter.MockitoExtension;
import reactor.core.publisher.Mono;
@ExtendWith(MockitoExtension.class)
public class APITest {
@Mock API api;
@Mock ErrorProcessor errorProcessor;
@Mock ResponseHandler responseHandler;
@InjectMocks APIService apiService;
@Test
public void givenRequest_shouldCreate() {
// given
Request request = new Request(1);
Mockito.when(api.create(request)).thenReturn(Mono.just(new Response(1)));
// when
apiService.process(request);
// then
Mockito.verify(api, Mockito.times(1)).create(request);
Mockito.verify(responseHandler,Mockito.times(1)).process(Mockito.any(Response.class));
}
//Failing Test
@Test
public void givenRequest_shouldThrow() {
// given
Request request = new Request(1);
Mockito.when(api.create(request))
.thenReturn(
Mono.error(new ClientException(new ErrorResponse("0101", "This is failed request"))));
// when
apiService.process(request);
// then
Mockito.verify(errorProcessor, Mockito.times(1)).process(Mockito.any(ClientException.class));
}
}
我的测试方法givenRequest\u shouldCreate正在验证,一旦API响应到来,我的ResponseHandler就会被调用。
但以同样的方式进入测试方法givenRequest\u shouldThrow,我想验证一下,如果发生任何错误,那么我的ErrorProcessor将被调用
当我运行上述测试时,出现以下错误
com.service.ClientException
at com.service.APITest.givenRequest_shouldThrow(APITest.java:37)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:675)
at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:125)
at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:132)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:124)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:74)
at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:104)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:62)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:43)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:35)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:202)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:198)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:69)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:229)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:197)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:211)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:191)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:69)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
Suppressed: java.lang.Exception: #block terminated with an error
at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:93)
at reactor.core.publisher.Mono.block(Mono.java:1663)
at com.service.APIService.process(APIService.java:25)
at com.service.APITest.givenRequest_shouldThrow(APITest.java:41)
... 63 more
所以我想模拟的是,当我调用创建方法时,它会返回Mono.error所以在. doOnError中我想保留错误。所以我想确保我的errorHandler.saveError方法是否被调用。
有人能帮我吗
谢啦
阿尔卑斯
您的测试应该期望process方法抛出异常,请参见下面的示例。有更多奇特的方法来断言此线程中列出的异常。
//Failing Test
@Test
public void givenRequest_shouldThrow() {
// given
Request request = new Request(1);
Mockito.when(api.create(request))
.thenReturn(
Mono.error(new ClientException(new ErrorResponse("0101", "This is failed request"))));
// when
try {
apiService.process(request);
fail("Process should have thrown an exception");
} catch (ClientException e) {
// then
assertEquals("0101", e.getErrorResponse().errorCode);
assertEquals("This is failed request", e.getErrorResponse().message);
assertNull(e.getMessage());
Mockito.verify(errorProcessor, Mockito.times(1)).process(Mockito.any(ClientException.class));
}
}
我有一个服务电话返回单声道。现在,在给用户提供API响应的同时,我想发送一些响应。我试过用flatMap和地图,但它不起作用。它给了我一个空的身体作为回应。 谢谢你
我的理解是单声道 我说得对吗? 如果没有,单声道之间的区别是什么
使用spring 5,对于reactor,我们有以下需求。 什么方法可以转换单声道
我有一个方法,可以尝试使用WebClient返回Mono 它可以返回我期望的结果。然后我尝试创建另一个方法来支持列表作为参数 但这一次返回一个奇怪的结果。 我是反应式编程新手,将流和单声道结合起来,然后转换为流量的正确方法是什么?
在我的views.py中,我有一个函数,它每次使用不同的响应来调用各种requests.get() 在我的测试类中,我想做这样的事情,但无法计算出确切的方法调用 步骤1: 验证响应包含“a response”、“b response”、“c response” 如何完成步骤1(模拟请求模块)?