新建Hello world也404

pom.xml

@@ -147,11 +147,11 @@
         </dependency>
 
         <!-- https://mvnrepository.com/artifact/org.apache.tomcat/servlet-api -->
-        <dependency>
+<!--        <dependency>-->
-            <groupId>org.apache.tomcat</groupId>
+<!--            <groupId>org.apache.tomcat</groupId>-->
-            <artifactId>servlet-api</artifactId>
+<!--            <artifactId>servlet-api</artifactId>-->
-            <version>6.0.35</version>
+<!--            <version>6.0.35</version>-->
-        </dependency>
+<!--        </dependency>-->
 
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
@@ -162,12 +162,19 @@
     </dependencies>
 
     <build>
-
         <plugins>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.1</version>
+                <configuration>
+                    <release>11</release>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 

src/main/java/com/xkrs/controller/HelloWorldController.java

@@ -0,0 +1,21 @@
+package com.xkrs.controller;
+
+import com.xkrs.encapsulation.PromptMessageEnum;
+import org.springframework.context.i18n.LocaleContextHolder;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Locale;
+
+import static com.xkrs.encapsulation.OutputEncapsulation.outputEncapsulationObject;
+
+@RestController
+public class HelloWorldController {
+
+    @GetMapping("/hello")
+    public String hello() {
+        Locale locale = LocaleContextHolder.getLocale();
+        return outputEncapsulationObject(PromptMessageEnum.SUCCESS, "hello", locale);
+    }
+
+}