Spring Boot MVC api返回的String无法关联

之前没搞明白@RestController和@Controller的区别.....所以用了@RestController, 导致跳不到视图.
两者的区别如下:

• @Controlleris used to mark classes as Spring MVC Controller.
• @RestController is a convenience annotation that does nothing more than adding the @Controller and @ResponseBody annotations

也就是: @RestController 等价于 @Controller 加上 @ResponseBody.
@ResponseBody 表示该方法的返回不会被解析为跳转, 而是直接写入http响应正文

原文: https://stackoverflow.com/questions/25242321/difference-between-spring-controller-and-restcontroller-annotation
@ResponseBody参考文档: http://blog.csdn.net/ff906317011/article/details/78552426