出错的代码
@Controller
public class TestController {
@RequestMapping("/test")
public Boolean test() {
System.out.println("123");
return true;
}
}报错
IllegalArgumentException: Unknown return value type: java.lang.Boolean
解决
添加 @ResponseBody 或将 @Controller 改为 @RestController
@RestController
// @Controller
// @ResponseBody
public class TestController {
@RequestMapping("/test")
public Boolean test() {
System.out.println("123");
return true;
}
}