Could not resolve view with name 'xxx' in servlet with name 'dispatcherServlet',

2024-05-24 07:17:20

1,问题

本人启动spring boot项目后，访问接口，报错信息如下：

{"timestamp": 1537234637805,"status": 500,"error": "Internal Server Error","exception": "javax.servlet.ServletException","message": "Could not resolve view with name 'api/company/info' in servlet with name 'dispatcherServlet'","path": "/api/company/info"
}

2，原因

因为返回信息为json对象，本人在controller方法所在的入口类上，添加的注解为：@Controller

而@Controller是不适合返回json内容的

3，解决方法

方法一：不影响其它方法的使用的情况下，将@Controller注解改为@RestController

方法二：在需要请求的返回json对象的方法上添加@ResponseBody注解

本人项目中该方法所在类的其它方法有的返回到指定页面，所以不能用@RestController直接替换@Controller，所以采用方法二解决了问题。

@Controller与@RestController区别如下

@RestController is a stereotype annotation that combines @ResponseBody and @Controller.
意思是：
@RestController注解相当于@ResponseBody ＋ @Controller合在一起的作用。

1)如果只是使用@RestController注解Controller，则Controller中的方法无法返回jsp页面，配置的视图解析器InternalResourceViewResolver不起作用，返回的内容就是Return 里的内容。

例如：本来应该到success.jsp页面的，则其显示success.

2)如果需要返回到指定页面，则需要用 @Controller配合视图解析器InternalResourceViewResolver才行。
3)如果需要返回JSON，XML或自定义mediaType内容到页面，则需要在对应的方法上加上@ResponseBody注解。

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