Creating basic example from spring.start.io returns 404 instead of mapped String

[Destany.Harber]

.

I’m unable to route requests to my Spring Boot application, even though I’ve tried the following:

• Added the regex /app/** to the Rest Controller and **/api to the Method, as suggested in this Stack Overflow question.
• Added <packaging>jar</packaging> to my pom.xml, as suggested in this Stack Overflow question.
• Visited the correct endpoint, localhost:8080/api (port is not in use), as suggested in this Stack Overflow question.
• Verified that the issue isn’t related to the mapping, as suggested in this Stack Overflow question.

The pom.xml and RestController class are provided below for reference.

• My pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <packaging>jar</packaging>
   
   <parent>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-parent</artifactId>
       <version>2.2.2.RELEASE</version>
       <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>myrest</groupId>
   <artifactId>remoteapi</artifactId>
   <version>0.0.1</version>
   <name>remoteapi</name>
   <description>Rest Mobile Dev ICSD Api</description>

   <properties>
       <java.version>1.8</java.version>
   </properties>

   <dependencies>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-web</artifactId>
       </dependency>

       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
           <scope>test</scope>
           <exclusions>
               <exclusion>
                   <groupId>org.junit.vintage</groupId>
                   <artifactId>junit-vintage-engine</artifactId>
               </exclusion>
           </exclusions>
       </dependency>
   </dependencies>

   <build>
       <plugins>
           <plugin>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-maven-plugin</artifactId>
           </plugin>
       </plugins>
   </build>

</project>

• My RestController class

package Controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class MainController {

    
    
    
    @RequestMapping(value="/api")
    public String test()
    {
        return "Hello World";
    }
}

I’m unable to route requests to my Spring Boot application. I’m accessing it from localhost:8080/api and the MainController class is located within the Controller package.

I have tried the following solutions suggested on Stack Overflow, but none of them worked:

• RequestMapping leads to 404 Error: Added the regex /app/** to the Rest Controller and **/api to the Method.
• Spring @RequestMapping, 404 error: Added <packaging>jar</packaging> to my pom.xml.
• Request Mapping returning error 404: Visited the correct endpoint, localhost:8080/api (port is not in use).
• Spring RequestMapping 404 error: Verified that the issue isn’t related to the mapping.

I have not encountered this issue before, as I have successfully run the same method with the same mapping on an older project.

[Augustine.Beier43 (Augustine Beier)]

The issue might be related to the package structure. The RestController class is located within the Controller package, but the package name is not defined in the @RequestMapping annotation. Try updating the annotation to @RequestMapping(value="/api", package="Controller").