java Spring启动测试无法识别servlet

Question

我有Spring Boot应用程序，我想测试它。我不使用Spring控制器，但我使用Servlet和服务方法。我还有一个配置类，它提供ServletRegistrationBean。 但每次我尝试执行模拟请求时，都会出现404错误。根本不需要调用servlet。我认为Spring没有找到这个servlet。我该怎么修？当我在localhost上启动应用程序时，一切正常

测试：

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest
@AutoConfigureMockMvc
public class SpringDataProcessorTest {

    @Autowired
    private MockMvc mockMvc;

    @Test
    public void retrieveByRequest() throws Exception{
        mockMvc.perform(buildRetrieveCustomerByIdRequest("1")).andExpect(status().isOk());

    }

    private MockHttpServletRequestBuilder buildRetrieveCustomerByIdRequest(String id) throws Exception {
        return get(String.format("/path/get('%s')", id)).contentType(APPLICATION_JSON_UTF8);
    }
}

配置：

@Configuration
public class ODataConfiguration extends WebMvcConfigurerAdapter {
    public String urlPath = "/path/*";


    @Bean
    public ServletRegistrationBean odataServlet(MyServlet servlet) {
        return new ServletRegistrationBean(servlet, new String[] {odataUrlPath});
    }
}

MyServlet：

@Component
public class MyServlet extends HttpServlet {

    @Autowired
    private ODataHttpHandler handler;


    @Override
    @Transactional
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        try {
            handler.process(req, resp);
        } catch (Exception e) {
            log.error("Server Error occurred", e);
            throw new ServletException(e);
        }
    }
}

Answer 1

如果你真的想用MockMvc而不是Servlet来测试你的代码，那就用HttpRequestHandler和SimpleUrlHandlerMapping来把它映射到一个URL

类似于下面的内容

@Bean
public HttpRequestHandler odataRequestHandler(ODataHttpHandler handler) {
    return new HttpRequestHandler() {
        public void handleRequest() {
            try {
                handler.process(req, resp);
            } catch (Exception e) {
                log.error("Server Error occurred", e);
                throw new ServletException(e);
            }
        }
    }
}

还有地图

@Bean
public SimpleUrlHandlerMapping simpleUrlHandlerMapping() {
    SimpleUrlHandlerMapping mapping = new SimpleUrlHandlerMapping();
    mapping.setUrlMap(Collections.singletonMap(odataUrlPath, "odataRequestHandler"); 
    return mapping;
}

另一个解决方案是将其封装在控制器中，而不是servlet中

@Controller
public class ODataController {

    private final ODataHttpHandler handler;

    public ODataController(ODataHttpHandler handler) {
        this.handler=handler;
    }

    @RequestMapping("/path/*")
    public void process(HttpServletRequest request, HttpServletResponse response) throws ServletException {
        try {
            handler.process(req, resp);
        } catch (Exception e) {
            log.error("Server Error occurred", e);
            throw new ServletException(e);
        }
    }
}

无论哪种方式，你的处理程序都应该由DispatcherServlet提供服务/处理，因此可以使用MockMvc进行测试