Jasmine McChingkey :
I tried to test Spring Boot with MongoDB but when I run mvn, the server run just fine but can't find the mapping in the RestController
@RestController
@RequestMapping("/mongotest")
public class UserController {
@Autowired
private UserService service;
@RequestMapping(value = "/getallusers" , method = RequestMethod.GET)
public List<User> getAllUser(){
return service.findAll();
}
@RequestMapping(value = "/saveuser" , method = RequestMethod.POST)
public void saveUser(@RequestBody User user){
service.createUser(user);
}
@GetMapping(value = "/hello")
public String test(){
return "hello world";
}
}
@Repository
public interface UserDAO extends MongoRepository<User,String>{
List<User> findByName(String name);
List<User> findByDepartment(String department);
}
@Entity
@Getter @Setter @NoArgsConstructor @ToString @AllArgsConstructor
@Document(collection = "users")
public class User{
@Id
private Long id;
@Field(value = "name")
private String name;
@Field(value = "age")
private Integer age;
@Field(value = "department")
private String department;
}
spring.data.mongodb.database= test_mongo
@SpringBootApplication
@EnableAutoConfiguration(exclude = DataSourceAutoConfiguration.class)
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
System.out.println("Deploy successful");
}
}
Update the service class
@Service
public class UserService{
@Autowired
private UserDAO userDAO;
public User createUser(User u){
return userDAO.save(u);
}
public List<User> findByName(String name){
return userDAO.findByName(name);
}
public List<User> findByDepartment(String department){
return userDAO.findByDepartment(department);
}
public List<User> findAll(){
return userDAO.findAll();
}
}
Update 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.8.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example.demo</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
The program run just fine but in the log can't find the part mapping with the RequestMapping i have in the UserController And when i run the mapped link return 404
```Project struct
src
main
java
com
example
demo
controller
UserController.java
demo
DemoApplication.java
entity
User.java
repository
UserDAO.java
service
UserService.java
resources
application.properties
pom.xml
2019-09-09 22:42:05.856 INFO 19036 --- [ main] com.example.demo.demo.DemoApplication : Starting DemoApplication on DESKTOP-UNR6TSG with PID 19036 (E:\demo\target\classes started by MemeLord in E:\demo)
2019-09-09 22:42:05.861 INFO 19036 --- [ main] com.example.demo.demo.DemoApplication : No active profile set, falling back to default profiles: default
2019-09-09 22:42:06.782 INFO 19036 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2019-09-09 22:42:06.784 INFO 19036 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
2019-09-09 22:42:06.806 INFO 19036 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 17ms. Found 0 repository interfaces.
2019-09-09 22:42:07.549 INFO 19036 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2019-09-09 22:42:07.588 INFO 19036 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2019-09-09 22:42:07.588 INFO 19036 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.24]
2019-09-09 22:42:07.707 INFO 19036 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2019-09-09 22:42:07.708 INFO 19036 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1790 ms
2019-09-09 22:42:08.053 INFO 19036 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2019-09-09 22:42:09.060 INFO 19036 --- [ main] org.mongodb.driver.cluster : Cluster created with settings {hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
2019-09-09 22:42:09.138 INFO 19036 --- [localhost:27017] org.mongodb.driver.connection : Opened connection [connectionId{localValue:1, serverValue:2}]
to localhost:27017
2019-09-09 22:42:09.144 INFO 19036 --- [localhost:27017] org.mongodb.driver.cluster : Monitor thread successfully connected to server with description ServerDescription{address=localhost:27017, type=STANDALONE, state=CONNECTED, ok=true, version=ServerVersion{versionList=[4, 2, 0]}, minWireVersion=0, maxWireVersion=8, maxDocumentSize=16777216, logicalSessionTimeoutMinutes=30, roundTripTimeNanos=3475900}
2019-09-09 22:42:09.401 INFO 19036 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2019-09-09 22:42:09.404 INFO 19036 --- [ main] com.example.demo.demo.DemoApplication : Started DemoApplication in 4.07 seconds (JVM running for 8.531)
Deploy successful
Constantin Beer :
Your packages have the wrong structure. You have to put them into your second demo, where your DemoApplicationis, not the first as you did. Then Spring will recognize them.
Here you can read about the package structuring in Spring Boot.