如何为返回PDF文件的Spring Boot测试用例设置内容类型 [英] How to set content-type for a spring boot test case which returns PDF file

问题描述

我目前正在使用Spring boot test测试我的一项服务，该服务导出所有用户数据并在成功完成后生成CSV或PDF.在浏览器中下载文件.

I am currently testing one of my services with Spring boot test.The service exports all user data and produces a CSV or PDF after successful completion. A file is downloade in browser.

下面是我在测试类中编写的代码

Below is the code i have wrote in my test class

MvcResult result =   MockMvc.perform(post("/api/user-accounts/export").param("query","id=='123'")
    .contentType(MediaType.APPLICATION_JSON_VALUE)
    .accept(MediaType.APPLICATION_PDF_VALUE)
    .content(TestUtil.convertObjectToJsonBytes(userObjectDTO)))
    .andExpect(status().isOk())
    .andExpect(content().contentType(MediaType.APPLICATION_PDF_VALUE))
    .andReturn();
String content = result.getResponse().getContentAsString();  // verify the response string.

下面是我的资源类代码(调用到此位置)-

Below is my resource class code (call comes to this place)-

    @PostMapping("/user-accounts/export")
@Timed
public ResponseEntity<byte[]> exportAllUsers(@RequestParam Optional<String> query, @ApiParam Pageable pageable, 
@RequestBody UserObjectDTO userObjectDTO) {
HttpHeaders headers = new HttpHeaders();
.
.
.

 return new ResponseEntity<>(outputContents, headers, HttpStatus.OK);

 }

虽然我调试服务，然后在出口之前进行调试，但是我得到的内容类型为"application/pdf"，状态为200.我试图在测试用例中复制相同的内容类型.在执行过程中总以某种方式使其低于错误-

While I debug my service, and place debug just before the exit, I get content Type as 'application/pdf' and status as 200.I have tried to replicate the same content type in my test case. Somehow it always throws below error during execution -

   java.lang.AssertionError: Status 
   Expected :200
   Actual   :406

我想知道，我应该如何检查我的响应(ResponseEntity).同样，响应所需的内容类型应该是什么.

I would like to know, how should i inspect my response (ResponseEntity). Also what should be the desired content-type for response.

推荐答案

我在@veeram的帮助下找到了答案，并开始理解我的MappingJackson2HttpMessageConverter配置缺少我的要求.我覆盖了它默认的受支持的Mediatype，它解决了这个问题.

I found the answer with help of @veeram and came to understand that my configuration for MappingJackson2HttpMessageConverter were lacking as per my requirement. I override its default supported Mediatype and it resolved the issue.

默认支持-

implication/json
application*/json

已完成代码更改以解决此问题-

Code change done to fix this case -

@Autowired
private MappingJackson2HttpMessageConverter jacksonMessageConverter;

List<MediaType> mediaTypes = new ArrayList<>();
mediaTypes.add(MediaType.ALL);
jacksonMessageConverter.setSupportedMediaTypes(mediaTypes);

这篇关于如何为返回PDF文件的Spring Boot测试用例设置内容类型的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！