Spring Boot跳转Jsp页面报错javax.servlet.ServletException: Could not resolve view with name 'index' in servlet with name 'dispatcherServlet'

该异常是因为用定义了带@EnableWebMvc注解的配置类后发生的，在带该注解的配置类中加入下面的代码就可以了：

@Bean
public InternalResourceViewResolver viewResolver() {
    InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
    viewResolver.setPrefix("/WEB-INF/jsp/");
    viewResolver.setSuffix(".jsp");
    return viewResolver;
}

有了这段代码在application.yml中的下面的配置就没有必要了

spring: 
  mvc:
    view:
      prefix: /WEB-INF/
      suffix: .jsp