SpringBoot报 错 Circular view path

1.报错 Circular view path

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

原因缺少配置：freemarker suffix: .html，添加即可

spring:
        freemarker: 
            cache: false
            charset: UTF-8
            check-template-location: true
            suffix: .html
            template-loader-path: classpath:/templates 
            request-context-attribute: request