Spring MVC InternalResourceViewResolver

Question

我是Spring MVC的新手，我正在尝试配置如下的简单控制器，但是当我测试它时。我得到了

javax.servlet.ServletException: Circular view path [index]: would dispatch back to the current handler URL [/index] again. Check your ViewResolver setup! (Hint: This may be the result of an unspecified view, due to default view name generation.)

这是我的WebConfig.java代码：

 @Bean
public ViewResolver viewResolver() {

    InternalResourceViewResolver resolver = new InternalResourceViewResolver();
    resolver.setPrefix("/WEB-INF/views/");
    resolver.setSuffix(".jsp");

    return resolver;
}

这是我的IndexController.java代码：

@Controller
@RequestMapping("/index")

public class IndexController {

@RequestMapping(method = RequestMethod.GET)
public String index() {

    return "index";
}

}

这是我的Test Fiel：

public class TestIndexController {

  @Test
  public void testIndexController() throws Exception {

    IndexController indexController = new IndexController();

    MockMvc mockMvc = standaloneSetup(indexController).build();

    mockMvc.perform(get("/index")).andExpect(view().name("index"));
 }

}

每当我将get（“/ index”）更改为get（“/ index.jsp”）时，我都通过了测试。但我无法理解，请帮帮我

Answer 1

在您的测试设置中，您创建了一个正在测试的Controller的实例，但为测试创建的上下文并不知道您的WebConfig是否存在，因此，没有您{的实例{1}}。

这是一个快速修复：

ViewResolver

如果您不想在测试类中访问public void testIndexController() throws Exception { IndexController indexController = new IndexController(); MockMvc mockMvc = standaloneSetup(indexController) setViewResolvers((new WebConfig()).viewResolver()).build(); mockMvc.perform(get("/index")).andExpect(view().name("index")); } ，还可以创建WebConfig的新实例并将其添加到ViewResolver设置中。

希望这有帮助。