I am developing a WebSocket Application using Spring boot.
WebSocketConfig.java
#EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {
#Override
public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
registry.addHandler(getHandler(), "/marco");
}
#Bean
public WebSocketHandler getHandler() {
return new WebSocketHandler();
}
}
WebSocketHandler.java
public class WebSocketHandler extends TextWebSocketHandler {
#Override
protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
session.sendMessage(new TextMessage("Hello"));
}
}
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.ge.websocket</groupId>
<artifactId>SpringWebSocket</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>SpringWebSocket</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.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-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-websocket</artifactId>
<version>4.0.0.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.websocket</groupId>
<artifactId>javax.websocket-api</artifactId>
<version>1.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-messaging</artifactId>
<version>5.0.6.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
WebSocket.html
<html>
<body>
<h1>I am in Main Page!!</h1>
</body>
<head>
<script>
var url='ws://localhost:8080'+'/SpringWebSocket/marco';
var sock=new WebSocket(url);
sock.onopen=function(){
console.log("Socket was Opened!");
}
sock.onmessage=function(e){
console.log("Received Message "+e.data);
}
sock.onclose=function(){
console.log("Connection was closed!");
}
function hello(){
console.log("Hello Iftekhar!!");
sock.send("Marco!");
}
</script>
</head>
</html>
The Server code is running on tomcat with port-8080 and client is running on tomcat9 with port - 8090. But when i am doing http://localhost:8090/WebSocket.html . I am getting the below error on console.
WebSocket.html:8 WebSocket connection to 'ws://localhost:8080/SpringWebSocket/marco' failed: Error during WebSocket handshake: Unexpected response code: 404
The Server side Code can be found here - https://github.com/iftekharkhan09/SpringWebSocket
Can anyone please help!
Spring Boot, by default, serves content on the root context path (“/”).
So you should try
ws://localhost:8080/marco
instead of
ws://localhost:8080/SpringWebSocket/marco
Related
I have made projects before on spring and never got any issue like this before ,i just can't seem to figure out what is wrong here, all dependencies are correctly imported .
Here is how my vaultengine.java looks like :
VaultEngine.java :
package com.example.VaultEngine;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
#SpringBootApplication
#Controller
public class VaultEngineApplication {
public static void main(String[] args) {
SpringApplication.run(VaultEngineApplication.class, args);
}
#GetMapping("/h")
public String greetingForm() {
return "index.html";
}
}
I am using a custom port cause i have 8080 in use somewhere already.
application.properties:
server.port=8989
All dependencies are properly loaded.
pom.xml 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 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>2.2.6.RELEASE</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>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>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
<version>2.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.19</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<version>1</version>
</configuration>
</plugin>
</plugins>
</build>
</project>
You are using spring-boot-starter-thymeleaf, so
#GetMapping("/h")
public String greetingForm() {
return "index";
}
and put index.html to src/main/resources/templates/.
refs:
https://spring.io/guides/gs/serving-web-content/
https://docs.spring.io/spring-boot/docs/2.2.6.RELEASE/reference/htmlsingle/#boot-features-spring-mvc-template-engines
https://docs.spring.io/spring/docs/5.2.7.RELEASE/spring-framework-reference/web.html#mvc-controller
Use #RestController instead of #Controller
#SpringBootApplication
#RestController
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
#GetMapping("/h")
public String greetingForm() {
return "index.html";
}
}
I'm having an issue getting a simple web app using Spring Reactive's RouterFunction to work with an embedded Eureka server. I tried a couple of things, including using the old way of annotating #RestController which works fine. Furthermore, I tried to removing the Eureka dependency from the POM file after which the RouterFunction endpoint worked fine.
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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
</parent>
<groupId>com.test</groupId>
<artifactId>tds</artifactId>
<version>1.0-SNAPSHOT</version>
<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>
<!--SPRING-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
<version>2.0.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
</project>
Router, that does not get hit:
#Configuration
public class Router {
#Bean
public RouterFunction<ServerResponse> route(Handler handler) {
return route(GET("/test"), Handler::handle);
}
}
Controller, that get's hit fine:
#RestController
#ResponseStatus(HttpStatus.OK)
public class controller {
#GetMapping("/discovery")
public String getApplication() {
return "test2222";
}
}
Main:
#SpringBootApplication
#EnableEurekaServer
public class DiscoveryApp {
public static void main(String[] args) {
SpringApplication.run(com.test.tds.DiscoveryApp.class, args);
}
}
As stated above, after removing the dependency to Eureka the RouterFunction endpoint works fine.
Does anyone have an idea how to make this work?
Apparently Webflux is currently not supported by Eureka server. It is suggested to use the old spring-boot-starter-web way.
As future reference:
https://github.com/spring-cloud/spring-cloud-netflix/issues/3108#issuecomment-408262981
I am very new to Spring framework. I have created a new Spring Starter Project with following modules: web, mongo, security.
I have created a simple controller
#RestController
#RequestMapping("/users")
public class UserController {
private UserRepository userRepository;
#GetMapping("/all")
public List<User> getAllUsers(){
List<User> users = this.userRepository.findAll();
return users;
}
#PostMapping("/")
public void insert(#RequestBody User user){
this.userRepository.save(user);
}
}
And seeded some raw data to the database. When I make request to this route in Postman, I get the following response:
{
"timestamp": 1511113712858,
"status": 401,
"error": "Unauthorized",
"message": "Full authentication is required to access this resource",
"path": "/users/all"
}
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>ngt</groupId>
<artifactId>someArtifact</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>dermaskin</name>
<description>Demo project for Spring Boot with mongodb</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-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</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-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
What is causing the unauthorized response and how to disable it for the /all route? Thanks!
#Configuration
public class WebSecurityConfiguration extends WebSecurityConfigurerAdapter {
#Override
public void configure(HttpSecurity http) throws Exception {
http.requestMatchers().antMatchers("/users/all").permitAll();
}
}
You need to configure Spring Security, by default all routes all secured for authrorization.
The code above disables security only for "/users/all" URL.
I was getting this error as I included
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-oauth2-client</artifactId>
</dependency>
in my pom.xml file.
Just remove it and try again.
You can keep your security dependency but then you have to setup a userid and a password. This can be done by adding the following into your application.properties file located under
src/main/resources
folder
security.user.name=user # Default user name.
security.user.password= # your password here
when I include the following dependency Spring asks for authentication for all rest requests.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany</groupId>
<artifactId>myapp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>MyApp</name>
<description></description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.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-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</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>
My UserController.java
#RestController
#RequestMapping("/users")
public class UserController {
#Autowired
UserService us;
#RequestMapping("/all")
public Hashtable<String, User> getAll() {
return us.getAll();
}
#RequestMapping("{id}")
public User getPerson(#PathVariable("id") String id) {
return us.getPerson(id);
}
#RequestMapping(method = RequestMethod.POST)
public void registerNewUser() {
us.registerNewUser();
}
}
How can I disable authentication for the registerNewUser() method? It's for registering a user and I don't want any authentication for that method.
You need a security configuration class and from there you can explicitly restrict that behaviour. For example:
#Configuration
#EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
#Override
protected void configure(HttpSecurity http) throws Exception {
http
.authorizeRequests()
.antMatchers("/users/**").authenticated()
.antMatchers(HttpMethod.POST, "/users").permitAll();
}
}
This question has been asked over and over, however I couldn't find my answer. I have an application using spring boot, which intellij can run it without any issue, however java -jar echohostname.jar give me this error:
Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean
Here is my Main class:
public class ApplicationMain {
public static void main(String[] args) {
SpringApplicationBuilder builder = new SpringApplicationBuilder(SpringConfiguration.class);
ConfigurableApplicationContext applicationContext = builder.run(args);
}
This is my Controller class:
#RestController
public class Controller {
#Autowired
#Qualifier("getSigarProxy")
private SigarProxy sigarProxy;
#RequestMapping(value = "/hostname", method = RequestMethod.GET)
public String hostName() throws SigarException {
return "HELLO THERE";
//return sigarProxy.getNetInfo().getHostName();
}
}
And this is spring configuration class:
#SpringBootApplication
#Configuration
#ComponentScan("controller")
public class SpringConfiguration {
#Bean
public static PropertySourcesPlaceholderConfigurer getPropertySourcesPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}
#Bean
public Sigar getSigar() {
return new Sigar();
}
#Bean
public SigarProxy getSigarProxy() {
return SigarProxyCache.newInstance(getSigar(), 1000);
}
#Bean
#Scope("prototype")
public HttpHeaders getHttpHeaders() {
return new HttpHeaders();
}
#Bean
#Scope("prototype")
public AsyncRestTemplate getRestTemplate() {
return new AsyncRestTemplate();
}
}
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>echoHostname</groupId>
<artifactId>echoHostname</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.fusesource</groupId>
<artifactId>sigar</artifactId>
<version>1.6.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<version>1.2.3.RELEASE</version>
</dependency>
</dependencies>
</project>
UPDATED MAIN:
public class ApplicationMain {
public static void main(String[] args) {
ApplicationContext ctx = SpringApplication.run(SpringConfiguration.class, args);
}
}
UPDATED 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>echoHostname</groupId>
<artifactId>echoHostname</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependencies>
<dependency>
<groupId>org.fusesource</groupId>
<artifactId>sigar</artifactId>
<version>1.6.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<version>1.2.7.RELEASE</version>
</dependency>
</dependencies>
</project>
Any help is appreciated.
Add class level #SpringBootApplication annotation in ApplicationMain.java
Add the below plugin in your pom.xml. Build the maven project and execute the jar command
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.6</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
This page has more information on maven assembly plugin - https://maven.apache.org/plugins/maven-assembly-plugin/usage.html
In a spring-boot project, you need that the parent pom be
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
You can remove the spring dependencies, like context, core and beans.
Add to the pom
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
And build the jar again.