Question

我正在尝试测试以下控制器：

@RepositoryRestController
@RequestMapping("movies")
public class MovieController {

    private MovieService movieService;
    private PagedResourcesAssembler<Movie> pagedAssembler;
    private MovieResourceAssembler movieResourceAssembler;

    @Autowired
    public void setMovieService(MovieService movieService) {
        this.movieService = movieService;
    }

    @Autowired
    public void setPagedAssembler(PagedResourcesAssembler<Movie> pagedAssembler) {
        this.pagedAssembler = pagedAssembler;
    }

    @Autowired
    public void setMovieResourceAssembler(MovieResourceAssembler movieResourceAssembler) {
        this.movieResourceAssembler = movieResourceAssembler;
    }

    // Return all movies with pagination
    @GetMapping
    public ResponseEntity<?> getAllMovies(Pageable pageable) {
        Page<Movie> moviePage = this.movieService.getAllMovies(pageable);
        // Remove some unnecessary fields
        //this.movieService.removeUndesirableFieldsFromListing(moviePage);
        return ResponseEntity.ok(this.pagedAssembler.toResource(moviePage, this.movieResourceAssembler));
    }
 }

这是测试：

@RunWith(SpringRunner.class)
@SpringBootTest
@AutoConfigureMockMvc
public class MovieControllerTest {

    @Autowired
    private MockMvc mockMvc;

    @MockBean
    private MovieService movieService;

    @Test
    public void getAllMovies_PageableGiven_ShouldReturnMoviesPage() throws Exception {
        List<Movie> movieList = new ArrayList<>();
        movieList.add(new Movie());
        movieList.add(new Movie());
        Page<Movie> moviePage = new PageImpl<>(movieList);
        given(this.movieService.getAllMovies(PageRequest.of(0,2)))
                .willReturn(moviePage);
        this.mockMvc.perform(get("http://localhost:8080/api/movies?page=1"))
                .andExpect(status().isOk());
    }
}

我遇到以下错误：

org.springframework.web.util.NestedServletException：请求处理失败；嵌套异常是java.lang.IllegalArgumentException：页面不能为null！

Answer 1

您可以使用Spring的mockMvc对象将其注入测试类中：

 @Autowired
 private MockMvc mockMvc;

我刚创建了一个使用嘲笑Mvc.perform方法发送页面请求的测试方法：

我的控制器代码：

@GetMapping(produces=MediaType.APPLICATION_JSON_UTF8_VALUE)
public List<BaseResponse> listAllBase(
        @PageableDefault(size = 50, page = 2) Pageable pageable) {

    // logger.debug("paginación recibida :{}",pageable);
    List<BaseResponse> findAllBases = baseService.findAllBases();
    return findAllBases;

}

我的测试代码：

mockMvc.perform(get("/base/?size=2&page=0")).andExpect(status().isOk())
             .andExpect(content().contentType(MediaType.APPLICATION_JSON_UTF8_VALUE))                        .andExpect(content().contentType(MediaType.APPLICATION_JSON_UTF8_VALUE))
             .andExpect(jsonPath("$", hasSize(2)))                       .andExpect(jsonPath("$", hasSize(2)))
             .andExpect(jsonPath("$[0].name", equalToIgnoringCase("margarita")))

在我的GitHub存储库中查看完整的类代码：

控制器：

https://github.com/cristianprofile/spring-boot-mvc-complete-example/blob/develop/spring-boot-mvc-rest/src/main/java/com/mylab/cromero/controller/HelloWorldController.java#L53

测试类方法：

https://github.com/cristianprofile/spring-boot-mvc-complete-example/blob/develop/spring-boot-mvc-rest/src/test/java/com/mylab/cromero/controller/RestTestIT.java#L66

随时在您的项目中使用它：）

Answer 2

通过阅读这两个Stackoverflow线程（[1]和[2]）以及Spring documentation，看来您应该将Page与存储库一起使用。示例：

PagingAndSortingRepository<User, Long> repository = // … get access to a bean
Page<User> users = repository.findAll(new PageRequest(1, 20));

对于您的情况，建议改用PagedListHolder。示例：

List<Movie> movieList = new ArrayList<>();
movieList.add(new Movie());
movieList.add(new Movie());
PagedListHolder<Movie> holder = new PagedListHolder<>(movieList);

春季启动测试错误：java.lang.IllegalArgumentException：页面不能为空

2 个答案: