为什么 WireMock 不写入文件内容？

问题描述

我有一个应用程序，它公开了一个用于下载文件的端点：

...
    @GetMapping("/{id}/download")
    public ResponseEntity<streamingresponsebody> downloadFile(@PathVariable Long id,HttpServletResponse response) {

        MyFile file = fileService.getFileInfo(id);
        String filename = file.getoriginalFileName();

        response.setContentType(MediaType.parseMediaType(fileAssociation.getMimeType()).toString());
        response.setHeader(HttpHeaders.CONTENT_disPOSITION,"attachment; filename=\"" + filename + "\"");

        streamingresponsebody stream = out -> {
            InputStream in = fileServiceService.loadFileAsResource(id);
            byte[] bytes = new byte[1024];
            int length;
            while ((length = in.read(bytes)) >= 0) {
                response.getoutputStream().write(bytes,length);
            }
            in.close();
        };

        return new ResponseEntity<>(stream,HttpStatus.OK);
    }
...

---

在另一个应用程序中，我使用 Spring Cloud OpenFeign 通过 GET 请求下载文件：

@FeignClient(name="api-gateway",url="${feign.client.url}")
public interface Proxy {

    @GetMapping("/files/{id}/download")
    Response dowloadFile(@PathVariable("id") Long id);
}

我有下载和保存文件的方法：

private Path downloadFile(MyFile file) {

        if (!workingDir.equals("/tmp")) {
            Utils.createDirectory(workingDir);
        }

        Path targetLocation = null;

        Response response = proxy.dowloadFile(file.getId());
        int status = response.status();
        if (status == HttpStatus.OK.value()) {
            String fileName = file.getoriginalFileName();
            Response.Body body = response.body();
            try {
                InputStream inputStream = body.asInputStream();
                targetLocation = Paths.get(workingDir,Utils.generateName(fileName));
                Files.copy(inputStream,targetLocation,StandardcopyOption.REPLACE_EXISTING);
            } catch (IOException e) {
                throw new StorageException(String.format("Cannot copy into '%s'",targetLocation));
            }
        } else {
            throw new MyException(String.format("ERROR in file '%s': %s. DOWNLOAD ERROR. Response status: %d",file.getoriginalFileName(),file.getJobId(),status));
        }

        return targetLocation;
    }

在 this 之后，我正在尝试使用 wiremock 测试应用程序，并且我有应该返回模拟文件的方法：

...
    public static void setupMockFile(wiremockServer mockService) throws IOException {

        mockService.stubFor(wiremock.get(wiremock.urlEqualTo("/files/1/download"))
            .willReturn(wiremock.aResponse()
                    .withStatus(HttpStatus.OK.value())
                    .withHeader("Content-Type","text/csv;charset=UTF-8")
                    .withHeader(HttpHeaders.CONTENT_disPOSITION,"attachment; filename=\"" + "myfile.csv" + "\"")
                    .withBodyFile("myfile.csv") // correct location inside resource folder!
            ));
    }
...

在测试类中注册：

...
    @BeforeEach
    void setUp() throws IOException {

        ProxyMocks.setupMockFile(mockProxyService);
    }
...

但是当我尝试执行测试时，即使正确创建了文件，文件为空并且日志显示：

2021-04-22 23:02:34.000  INFO 585791 --- [qtp991674862-27] w.o.e.j.s.handler.ContextHandler.ROOT    : RequestHandlerClass from context returned com.github.tomakehurst.wiremock.http.StubRequestHandler. normalized mapped under returned 'null'

---

可能是什么问题？

解决方法

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