Spring boot 请放心-获取url时出现NullPointerException

我正在研究rest assured，并根据各种互联网文章编写一些示例

使用maven来构建。对于放心的测试，我添加了pom

    <dependency>
        <groupId>io.rest-assured</groupId>
        <artifactId>spring-mock-mvc</artifactId>
        <version>4.3.1</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>io.rest-assured</groupId>
        <artifactId>rest-assured-all</artifactId>
        <version>4.3.1</version>
        <scope>test</scope>
    </dependency>

运行测试会导致

org.springframework.web.util.NestedServletException:请求 处理失败；嵌套异常是java.lang.NullPointerException 在 com.company.bikes.RestAssuredBikesTest.getModelOfFirstBicycle（RestAssuredBikesTest.java:42） 原因：java.lang.NullPointerException位于 com.company.bikes.RestAssuredBikesTest.getModelOfFirstBicycle（RestAssuredBikesTest.java:42）

其中第42行是带有url的行。 如果我将url更改为“/fred”，那么我将得到

java.lang.AssertionError:1预期失败。预期状态代码 但是是。 在 com.company.bikes.RestAssuredBikesTest.getModelOfFirstBicycle（RestAssuredBikesTest.java:45）

这是合理的，因为控制器中不存在/fred

你知道我做错了什么吗

问候,， 约翰

   @RequestMapping(value = "/api/v1/bicycles/{id}", method = RequestMethod.GET)
   public ResponseEntity<Object> getBicycle(@PathVariable("id") long id) {
      return new ResponseEntity<>(bicycleService.getBicycle(id), HttpStatus.OK);
   }

public class RestAssuredBikesTest {

    @Mock
    private BicycleService bikeService;
    @InjectMocks
    private BicycleServiceController bicycleController;


    @Before
    public void initialiseRestAssuredMockMvcStandalone() {
        RestAssuredMockMvc.standaloneSetup(new BicycleServiceController());
    }

    @Test
    public void getModelOfFirstBicycle() {
     
        RestAssuredMockMvc.given()
          .when().get("/api/v1/bicycles/1")
          .then()
            .log().ifValidationFails()
            .statusCode(OK.value())
            .contentType(JSON)
            .body("model", equalTo("civic"));
    }

}