Question

我有一个具有参数com.querydsl.core.types.Predicate的休息控制器，该参数使用@QuerydslPredicate注释

ResponseEntity<List<Employee>> listEmployees(@QuerydslPredicate(root = Employee.class) Predicate predicate) {
    List<Employee> employees = employeeService.listEmployees(predicate);
    return new ResponseEntity<>(employees , HttpStatus.OK);
}

我使用弹簧滑轮进行单元测试。我的单元测试看起来像

@Test
public void test_listEmployees() throws Exception {
    List<Employee> employees = singletonList(employee);

   given(employeeService.listEmployees(any(Predicate.class))).willReturn(employees);

    mockMvc.perform(get(EMPLOYEE_PATH)
            .contentType(MediaType.APPLICATION_JSON))
            .andExpect(status().isOk())
            .andExpect(jsonPath("$", hasSize(1)))
            .andExpect(jsonPath("$[0].employeeId", is(employee.getEmployeeId())))
            .andExpect(jsonPath("$[0].employeeName", is(employee.getEmployeeName())));
}

在单元测试执行时，我得到以下异常。

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.querydsl.core.types.Predicate]: Specified class is an interface

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at org.springframework.test.web.servlet.TestDispatcherServlet.service(TestDispatcherServlet.java:65)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.springframework.mock.web.MockFilterChain$ServletFilterProxy.doFilter(MockFilterChain.java:160)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:127)
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:127)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:108)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:127)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:127)
at org.springframework.test.web.servlet.MockMvc.perform(MockMvc.java:155)

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.querydsl.core.types.Predicate]: Specified class is an interface
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:99)
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:141)
at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:81)
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:101)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121)
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:158)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:128)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
... 47 more

任何帮助将不胜感激。

修改

我的控制器类用

注释

@RestController
@RequestMapping(value = "employees")

我的控制器方法用

注释

@RequestMapping(
        method = RequestMethod.GET
)

Answer 1

休息了几天并试图理解这个问题之后，我发现这不是mockito given函数的问题。相反，它是mockmvc.perform操作的问题。我通过在我的测试类中添加spring-data-commons包中的@EnableSpringDataWebSupport注释来解决它。

Hurrrayyyyy

使用@QuerydslPredicate谓词模拟测试的REST端点

1 个答案: