Controller代码如下：

@Controller
@RequestMapping(value = "/xx")
public class WebMonitorApi {
    @GetMapping(value = "/xxx", consumes = MediaType.ALL_VALUE)
    public ModelAndView monitor() {
        ModelAndView view = new ModelAndView();
        view.setViewName("monitor");
        return view;
    }

控制台报错信息：

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

解决方法：
Gradle工程--build.gradle:

compile('org.springframework.boot:spring-boot-starter-thymeleaf')

Maven工程--pom.xml:

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
 </dependency>