Spring boot Rest Api controller getting 404 error - spring

Question

I'm exposing my services by using Rest in Spring boot. I'm exposing my service with 2 different approach first by using cxf jaxrs dependency and other by spring rest dependency. In first approach i'm getting 404 error when i run my services in postman. But in second approach i'm getting my output. Please help me out.
First approach with cxf jaxrs
#Path("/locations")
public interface LocationRestController {
#GET
public List<Location> getLocations();
}
******************************************
#RestController
public class LocationRestControllerImpl implements LocationRestController {
#Autowired
LocationRepos repos;
#Override
public List<Location> getLocations() {
return repos.findAll();
}}
{
"timestamp": "2018-09-17T03:36:05.283+0000",
"status": 404,
"error": "Not Found",
"message": "No message available",
"path": "/locationweb/locations"
}
Second approach using spring inbuilt dependency
#RestController
#RequestMapping("/locations")
public class LocationRestControllerImpl {
#Autowired
LocationRepos repos;
#GetMapping
public List<Location> getLocations() {
return repos.findAll();
}}
Pom file
<?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
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.project.abhishek</groupId>
<artifactId>student</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>student</name>
<description>Student DAL</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
"pom.xml" <version>2.1.0.M2</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>9.0.12</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
<version>2.0.4.RELEASE</version>
</dependency>
<dependency>
<groupId>jfree</groupId>
<artifactId>jfreechart</artifactId>
<version>1.0.13</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-spring-boot-starter-jaxrs</artifactId>
<version>3.2.6</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>

Answer 1

please refer below code for correct implementation
public interface LocationRestController {
public List<Location> getLocations();
}
******************************************
#RestController(value="/locationweb/locations")
public class LocationRestControllerImpl implements LocationRestController {
#Autowired
LocationRepos repos;
#Override
#GetMapping
public List<Location> getLocations() {
return repos.findAll();
}}
{

Answer 2

This line might be the issue
#RestController
public class LocationRestControllerImpl implements LocationRestController {
remove #RestController from the class in 1st approach

Answer 3

Try this example,
https://dzone.com/articles/spring-boot-building-restful-web-services-with-jersey
Most probably you are missing Spring/Jersey integration or Jersey Configuration.
Do add Jersey Configuration for Spring boot to understand Jersey.
Below is the code for Jersey Configuration for convenience.
#Configuration
#ApplicationPath("rest")
public class Config extends ResourceConfig {
public Config() {
}
#PostConstruct
public void setUp() {
register(Controller.class);
}
}

Answer 4

Make sure you have CXF configuration and set as a service bean as if you use #RestController you are actually not implementing CXF so to order to handle requests by CXF, you need to configure CXF server.
#Configuration
public class CXFConfig {
#Autowired
private Bus bus;
#Bean
public Server rsServer() {
final JAXRSServerFactoryBean endpoint = new JAXRSServerFactoryBean();
endpoint.setBus(bus);
endpoint.setAddress("/");
endpoint.setServiceBeans(Arrays.asList(LocationRestController ()));
return endpoint.create();
}
#Bean
public LocationRestController locationController() {
return new LocationRestControllerImpl();
}
}
Note: No need to implement a controller, you can have directly controller.