Spring注解@Controller和@RestController的区别？

官方文档：Annotation Type RestController 解释说：A convenience annotation that is itself annotated with @Controller and @ResponseBody。

也就是@RestController注解相当于控制器前加@Controller，方法前加@ResponseBody共同的作用效果。

@RestController
@RequestMapping(value = "/login")
public class LoginController {
    @RequestMapping(value = "/loginSuccess")
    public String loginSuccess(SrClass srClass) {
        return "success";
    }
}

上面这段代码相当于

@Controller
@RequestMapping(value = "/login")
public class LoginController {

    @RequestMapping(value = "/loginSuccess")
    @ResponseBody
    public String loginSuccess(SrClass srClass) {
        return "success";
    }
}

如果第二段代码不加@ResponseBody，返回的就是success.jsp页面，加上之后返回的就是success字符串；而第一段代码返回的也是success，不再经过视图解析器解析了。