我正在测试RESTful API，并提供了测试方法，
@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.MOCK)
@AutoConfigureMockMvc
public class AppointmentAPITest {
/*
* we need a system to simulate this behavior without starting a
* full HTTP server. MockMvc is the Spring class that does that.
* */
@Autowired
private MockMvc mockMvc;
@MockBean
private AppointmentAPI api;
@Test
public void getAppointments_findById() throws Exception {
Appointment appoint1 = new Appointment(Date.valueOf("2018-09-01"), Time.valueOf("01:12:16"), "Vania Vong", 125.5);
Appointment appoint2 = new Appointment(Date.valueOf("2018-10-15"), Time.valueOf("08:30:00"), "Maria Wang", 275);
given(api.findById(1L)).willReturn(ResponseEntity.ok(appoint1));
given(api.findById(2L)).willReturn(ResponseEntity.ok(appoint2));
mockMvc.perform(get("/api/v1/appointments/1")
.contentType(MediaType.APPLICATION_JSON))
.andExpect(status().isOk())
.andExpect(jsonPath("$", hasSize(1)))
.andExpect(jsonPath("$[0].name_of_doctor", is(appoint1.getName_of_doctor())));
}}
下面提供了该实体
@Entity
public class Appointment {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column
private java.sql.Time created_at;
@Column
@DateTimeFormat(pattern = "yyyy-MM-dd")
private java.sql.Date appointment_date;
@Column
@Size(min = 3, max = 20)
private String name_of_doctor;
@Embedded
private Status status;
@Column
private double price;
public Appointment() {
}
public Appointment(Date appointment_date, Time created_at, String name_of_doctor, double price) {
this.created_at = created_at;
this.appointment_date = appointment_date;
this.name_of_doctor = name_of_doctor;
this.price = price;
}
public Appointment(String name_of_doctor, Status status, double price) {
this.name_of_doctor = name_of_doctor;
this.status = status;
this.price = price;
}
public Appointment(String name_of_doctor, double price) {
this.name_of_doctor = name_of_doctor;
this.price = price;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Time getCreated_at() {
return created_at;
}
public void setCreated_at(Time created_at) {
this.created_at = created_at;
}
public Date getAppointment_date() {
return appointment_date;
}
public void setAppointment_date(Date appointment_date) {
this.appointment_date = appointment_date;
}
public String getName_of_doctor() {
return name_of_doctor;
}
public void setName_of_doctor(String name_of_doctor) {
this.name_of_doctor = name_of_doctor;
}
public Status getStatus() {
return status;
}
public void setStatus(Status status) {
this.status = status;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof Appointment)) return false;
Appointment that = (Appointment) o;
return Double.compare(that.getPrice(), getPrice()) == 0 &&
Objects.equals(getId(), that.getId()) &&
Objects.equals(getCreated_at(), that.getCreated_at()) &&
Objects.equals(getAppointment_date(), that.getAppointment_date()) &&
Objects.equals(getName_of_doctor(), that.getName_of_doctor()) &&
Objects.equals(getStatus(), that.getStatus());
}
@Override
public int hashCode() {
return Objects.hash(getId(), getCreated_at(), getAppointment_date(), getName_of_doctor(), getStatus(), getPrice());
}
@Override
public String toString() {
return "Appointment{" +
"id=" + id +
", created_at=" + created_at +
", appointment_date=" + appointment_date +
", name_of_doctor='" + name_of_doctor + '\'' +
", status=" + status +
", price=" + price +
'}';
}
}
下面提供了API端点
@RestController
@RequestMapping("/api/v1/appointments")
public class AppointmentAPI {
@Autowired
AppointmentServiceImpl service;
@GetMapping("/{id}")
public ResponseEntity<Appointment> findById(@PathVariable Long id) {
Optional<Appointment> appointment = service.findById(id);
if (!appointment.isPresent()) {
ResponseEntity.badRequest().build();
}
return ResponseEntity.ok(appointment.get());
}
// ..............
}
运行测试时，出现错误提示
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalArgumentException: Name for argument type [java.lang.Long] not available, and parameter name information not found in class file either.
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1013)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
at org.springframework.test.web.servlet.TestDispatcherServlet.service(TestDispatcherServlet.java:71)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.springframework.mock.web.MockFilterChain$ServletFilterProxy.doFilter(MockFilterChain.java:166)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:133)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:133)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:133)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:133)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:133)
at org.springframework.test.web.servlet.MockMvc.perform(MockMvc.java:182)
at com.appoint.manager.Appointment.api.AppointmentAPITest.getAppointments_findById(AppointmentAPITest.java:66)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: java.lang.IllegalArgumentException: Name for argument type [java.lang.Long] not available, and parameter name information not found in class file either.
at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.updateNamedValueInfo(AbstractNamedValueMethodArgumentResolver.java:172)
at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.getNamedValueInfo(AbstractNamedValueMethodArgumentResolver.java:149)
at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:98)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:126)
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:166)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
... 51 more
为什么说参数类型[java.lang.Long]的名称不可用，而在类中找不到参数名称信息？
答案 0 :(得分：2)
在方法参数的注释中添加名称：
df <- read.csv("data.csv",nrows=100)