This may be the result of an unspecified view, due to default view name generation 报错解决

This may be the result of an unspecified view, due to default view name generation 报错解决

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

三种解决方法：

1.在@Controller上添加@ResonseBody 出现这个报错是因为@Controller上面缺少 @ResonseBody，因为没有@ResonseBody的话就会自动认为我们的Controller返回的是一个页面
ps：@ResonseBody会将返回值设置为JSON格式

2.@RestController=@ResonseBody+@Controller 也就是说我们直接用一个@RestController就能解决问题，而不需要用两个注解

3.在pom.xml中添加thymeleaf依赖

            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-thymeleafartifactId>    dependency> ```