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Eureka registers services but I cannot acces them by their name

I tried to set up Eureka server along with Eureka clients. I believe I have done all the configuration and I see that my services register themselfs in Eureka Server. I also can access them by the localhost:(server_port), but when I try to use Eureka discovery server and access them by their name, for example: http://authors-module/api/v1/authors/all, I am not able to do it. Simply, request is not going through, I really don't know what can be wrong.
There is my Eureka Service main class##
package com.example.Eurekamodule;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
#SpringBootApplication
#EnableEurekaServer
public class EurekaModuleApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaModuleApplication.class, args);
}
}
There is the application.yml
server:
port: 8761
eureka:
client:
fetch-registry: false
register-with-eureka: false
There is 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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>Eureka-module</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Eureka-module</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>2021.0.0</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
There is my Eureka client class
package com.example.Authormodule;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
#SpringBootApplication
#EnableEurekaClient
#EnableFeignClients
public class AuthorModuleApplication {
public static void main(String[] args) {
SpringApplication.run(AuthorModuleApplication.class, args);
}
}
There is it's application.yml
spring:
data:
mongodb:
uri: mongodb+srv: (some_url)
database: authors_db
application:
name: author-module
eureka:
client:
service-url:
defaultZone: http://localhost:8761/eureka/
server:
port: 8081
And lastly there is 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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>Author-module</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Author-module</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>2021.0.0</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongodb-driver-sync</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>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.modelmapper</groupId>
<artifactId>modelmapper</artifactId>
<version>3.1.0</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>

Assuming that you are trying to access http://authors-module/... from browser or postman
First of all accessing it through http://authors-module/api/v1/authors/all means that authors-module is a valid host-name in your network.
Secondly, if you check, the services would work through Feign client using service name that is visible in Eureka.
So, what I see here is the gap in understanding.
Your services are working perfectly fine.
Bonus: In case of deployment environments like Kubernetes, set the eureka.instance.hostname=<service_name>

lombok and #Valid not working together spring boot java

I am using lombok for generating Getter, Setter, AllArgsConstructor, NoArgsConstructor for User class and Doing some Validation with the help of #Valid annotation. But for some reason no Validation I put on User Class is working for me.
Below is the User Class
#Getter
#Setter
#AllArgsConstructor
#NoArgsConstructor
public class User {
#Size(min = 3, max = 15)
#NotBlank
private String username;
#NotNull
private String password;
}
Below is the Controller Class
#RestController
public class ValidationController {
#PostMapping("/validation")
public ResponseEntity<User> validationtest(#Valid
#RequestBody User user) {
return ResponseEntity.ok(user);
}
}
pom file is below
<?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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.validation</groupId>
<artifactId>validation</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>validation</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</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>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
Import used
import javax.validation.Valid
import javax.validation.constraints.NotBlank;

Springboot process keeps running even after completion in batch mode

I need to run the springboot application in the batch mode. As soon as the processes get finished, the process should exit. I have written a mock code to achieve the same but even after the print statement is completed, the process is not getting completed and I have to manually abort the process.
#SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
ApplicationContext applicationContext = SpringApplication.run(DemoApplication.class, args);
Test test = applicationContext.getBean(Test.class);
test.printTest();
}
}
Test.class :
package com.example.demo.service;
import org.springframework.stereotype.Component;
#Component
public class Test{
public void printTest(){
System.out.println("Test class !");
}
}
Dependencies :
<?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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</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-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>

It keeps running because you are using an ApplicationContext. You should close the context.
You can use ConfigurableApplicationContext and call the close() method .
ConfigurableApplicationContext applicationContext = SpringApplication.run(DemoApplication.class, args);
Test test = applicationContext.getBean(Test.class);
test.printTest();
applicationContext.close();

Spring Unit Test works in IntelliJ but not when using Maven (Multi Project)

So, I have the following setup:
Project
Module Database
Module Core
Module REST
Core and REST have Database as a Dependency and inside Database is a Configuration Class which connects to the Database on Startup.
Now, when i run each test of this class (default test looks like this:
#RunWith(SpringRunner.class)
#SpringBootTest
public class RestfulApplicationTests {
#Test
public void contextLoads(){}
}
It works when directly ran from IntelliJ.
BUT if i do "clean install" in Maven, Maven cannot find the dependencys. Example pom.xml from my Core Project
<?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>myproject</groupId>
<artifactId>myproject-restful</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>myproject-restful</name>
<description>Restful Services for myproject</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</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-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>myproject</groupId>
<artifactId>backend-cassandra</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>myproject</groupId>
<artifactId>backend-cassandra</artifactId>
<version>${project.version}</version>
<type>test-jar</type>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Pom from the DB Part:
<?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>de.mycompany.mypackage</groupId>
<artifactId>backend-cassandra</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>backend-cassandra</name>
<description>Cassandra Backend for </description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</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-cassandra</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-cassandra-reactive</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!-- Generate test jar too -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<goals>
<goal>test-jar</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
Main Project Pom:
<?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>de.mycompany.mypackage</groupId>
<artifactId>project</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<name>project</name>
<description>MyProject</description>
<modules>
<module>backend-cassandra</module>
<module>application</module>
<module>restful</module>
</modules>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</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</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<type>pom</type>
<version>1.2.3.RELEASE</version>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
Configuration Class
#Configuration
public class CassandraConfiguration extends AbstractCassandraConfiguration {
private static final AtomicReference<CassandraConfigurationFile> config
= new AtomicReference<>(new CassandraConfigurationFile("cassandra.ini"));
#Override
protected String getKeyspaceName() {
return config.get().getKeyspace();
}
#Bean
public CassandraClusterFactoryBean cluster() {
CassandraClusterFactoryBean cluster =
new CassandraClusterFactoryBean();
cluster.setContactPoints(config.get().getHostname());
cluster.setPort(config.get().getPort());
cluster.setProtocolVersion(ProtocolVersion.V4);
cluster.setTimestampGenerator(getTimestampGenerator());
cluster.setKeyspaceCreations(getKeyspaceCreations());
return cluster;
}
#Bean
public CassandraSessionFactoryBean session(){
CassandraSessionFactoryBean session = new CassandraSessionFactoryBean();
session.setCluster(cluster().getObject());
session.setKeyspaceName(getKeyspaceName());
session.setConverter(cassandraConverter());
session.setSchemaAction(SchemaAction.NONE);
return session;
}
#Bean
public CassandraConverter cassandraConverter(CassandraMappingContext mappingContext,
CassandraCustomConversions cassandraCustomConversions) {
MappingCassandraConverter converter = new MappingCassandraConverter(mappingContext);
converter.setCustomConversions(cassandraCustomConversions);
return converter;
}
#Bean
public CassandraMappingContext mappingContext() {
return new BasicCassandraMappingContext();
}
#Override
public SchemaAction getSchemaAction() {
return SchemaAction.CREATE_IF_NOT_EXISTS;
}
#Override
public String[] getEntityBasePackages() {
return new String[]{"myproject.cassandra.domain"};
}
protected List<CreateKeyspaceSpecification> getKeyspaceCreations() {
List<CreateKeyspaceSpecification> createKeyspaceSpecifications = new ArrayList<>();
createKeyspaceSpecifications.add(getKeySpaceSpecification());
return createKeyspaceSpecifications;
}
private CreateKeyspaceSpecification getKeySpaceSpecification() {
return CreateKeyspaceSpecification.createKeyspace(config.get().getKeyspace())
.ifNotExists(true)
.withNetworkReplication(DataCenterReplication.of("dcl",3L));
}
#Bean
CassandraCustomConversions cassandraCustomConversions() {
List<Converter<?, ?>> converters = new ArrayList<>();
converters.add(new DateToTimestampConverter());
return new CassandraCustomConversions(converters);
}
}

spring websocket makes whole project returns 404

I add websocket to my normal springboot project ,both websocket server and my web api works fine in my local computer, But when I put my project to my server, not only the websocket connection url get 404, but also my web api get 404 either.
Here is my code
WebSocketConfig.java
#Configuration
public class WebSocketConfig {
#Bean
public ServerEndpointExporter serverEndpointExporter() {
return new ServerEndpointExporter();
}
}
WebSocketServer.java
#ServerEndpoint(value = "/socketServer/{carId}")
#Component
public class WebSocketServer {
private Session session;
private static Map<String, Session> sessionPool = new ConcurrentHashMap<>(16);
private static Map<String, String> sessionIds = new ConcurrentHashMap<>(16);
#OnOpen
public void onOpen(Session session, #PathParam(value = "carId") String carId) {
this.session = session;
sessionPool.put(carId, session);
sessionIds.put(session.getId(), carId);
}
#OnMessage
public void onMessage(String message) {
System.out.println(message);
}
#OnClose
public void onClose() {
sessionPool.remove(sessionIds.get(session.getId()));
sessionIds.remove(session.getId());
}
#OnError
public void onError(Session session, Throwable exception) {
exception.printStackTrace();
}
public static void sendMessage(String carId, String message) throws IOException {
Session session = sessionPool.get(carId);
if (session != null) {
session.getBasicRemote().sendText(message);
}
}
}
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>
<groupId>com.driver</groupId>
<artifactId>alipay</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>Alipay</name>
<description>Alipay MiniProgram</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.8.RELEASE</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-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.restdocs</groupId>
<artifactId>spring-restdocs-mockmvc</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

I solved my question after few tests
It seems this is the tomcat problem in your server side
Let us use the springboot inner tomcat
1.set your project packing type to jar
2.set your server.port except 80 and 8080 , I set it to 8081
3.use mvn clean package -DskipTests to package your project to jar
4.upload your jar file to your server except for the tomcat directory
5.run your code with java -jar YOURFILENAME.jar
Here is my pom.xml file after I change my code
<?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.driver</groupId>
<artifactId>websocket</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>WebSocket</name>
<description>WebSocket for MiniProgram</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</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-websocket</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>