不能讓RestController接受應用程式/八位位元組流

我有一個帶有 rest 控制器的 spring boot 應用程式，它必須在 post 端點接受二進制流并用它做事情。

所以我有：

    @PostMapping(path="/parse", consumes = {MediaType.APPLICATION_OCTET_STREAM_VALUE})
    public String parse(RequestEntity<InputStream> entity) {
        return service.parse(entity.getBody());
    }

當我嘗試使用 MockMvc 對其進行測驗時，我得到了 org.springframework.web.HttpMediaTypeNotSupportedException。我在日志中看到：請求：

MockHttpServletRequest:
      HTTP Method = POST
      Request URI = /parse
       Parameters = {}
          Headers = [Content-Type:"application/octet-stream;charset=UTF-8", Content-Length:"2449"]
             Body = ...skipped unreadable binary data...
    Session Attrs = {}

回復：

MockHttpServletResponse:
           Status = 415
    Error message = null
          Headers = [Vary:"Origin", "Access-Control-Request-Method", "Access-Control-Request-Headers", Accept:"application/json, application/* json", X-Content-Type-Options:"nosniff", X-XSS-Protection:"1; mode=block", Cache-Control:"no-cache, no-store, max-age=0, must-revalidate", Pragma:"no-cache", Expires:"0", X-Frame-Options:"DENY"]
     Content type = null
             Body = 
    Forwarded URL = null
   Redirected URL = null
          Cookies = []

我試圖添加顯式標題：

    @PostMapping(path="/parse", consumes = {MediaType.APPLICATION_OCTET_STREAM_VALUE},
            headers = "Accept=application/octet-stream")

沒有幫助。測驗呼叫是：

        mvc.perform(post("/parse")                       
                        .contentType(MediaType.APPLICATION_OCTET_STREAM)
                        .content(bytes)
                ).andDo(print())
                .andExpect(status().isOk());

如何在不使用多部分形式的情況下使其作業？

uj5u.com熱心網友回復：

我已經分析了這個問題，并知道問題出在這種方法中。

  @PostMapping(path="/parse", consumes = {MediaType.APPLICATION_OCTET_STREAM_VALUE})
    public String parse(RequestEntity<InputStream> entity) {
        return service.parse(entity.getBody());
    }

這里方法引數的型別RequestEntity<InputStream>應該是HttpServletRequest

所以這里是修復。

    @PostMapping(value = "/upload",
            consumes = MediaType.APPLICATION_OCTET_STREAM_VALUE)
    public String demo(HttpServletRequest httpServletRequest) {

        ServletInputStream inputStream;

        try {
            inputStream = httpServletRequest.getInputStream();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }

        final List<String> list = new BufferedReader(new InputStreamReader(inputStream))
                .lines().toList();
        System.out.println(list);
        return "Hello World";
    }

測驗用例

    @Autowired
    private MockMvc mockMvc;

    @Test
    public void shouldTestBinaryFileUpload() throws Exception {
        mockMvc
                .perform(MockMvcRequestBuilders
                        .post("/upload")
                        .content("Hello".getBytes())
                        .contentType(MediaType.APPLICATION_OCTET_STREAM))
                .andExpect(MockMvcResultMatchers
                        .status()
                        .isOk())
                .andExpect(MockMvcResultMatchers
                        .content()
                        .bytes("Hello World".getBytes()));
    }

標籤：爪哇春天弹簧MVC弹簧座控制器模拟MVC

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