spring boot 错误：Check your ViewResolver setup
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Fri Mar 23 10:34:26 CST 2018
There was an unexpected error (type=Internal Server Error, status=500).
Circular view path [index]: would dispatch back to the current handler URL [/home/index] again. Check your ViewResolver setup! (Hint: This may be the result of an unspecified view, due to default view name generation.)
解决办法：
方法1.在请求方法上加注解：@ResponseBody，无需模板文件
@RequestMapping("/home")
@Controller()
public class HomeController {
@ResponseBody
@RequestMapping("/index")
public String index() {
return "index";
}
}
方法2. 用thymeleaf模板
在pom.xml的dependencies元素内加静态模板依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
在resources/templates/创建html模板文件，文件名与请求方法return的字符串一样，扩展名html： index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<p th:text="${data}"></p>
</body>
</html>
@RequestMapping("/home")
@Controller()
public class HomeController {
@RequestMapping("/index")
public String index(HashMap<String,Object> map) {
map.put("data","index.html");
return "index";
}
}
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