Got this while deploying the spring boot war on tomcat.
Anyone got this error
I have below steps :
Pom.xml :
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-tomcat
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
Main Class :
#SpringBootApplication
public class MainApp extends SpringBootServletInitializer{
#Override
protected SpringApplicationBuilder configure (SpringApplicationBuilder builder) {
return builder.sources(MainApp.class);
}
public static void main(String[] args) {
SpringApplication.run(MainApp.class, args);
}
}
Related
I am using spring-boot-starter-parent version 2.2.2.RELEASE with spring-cloud.version Hoxton.SR1 to create 2 services : ordercreate(Supplier) and orderconsume(Consumer).
In Consul, the 2 services are up as below
I get the exception
java.net.UnknownHostException: ordercreate
when invoking the orderconsumer service as below:
http://localhost:8282/consumeOrder
Please find the code details below.Thanks for suggestions.
ordercreate
pom.xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
application.properties
spring.application.name=ordercreate
server.port=8181
OrderCreateController
#RestController
public class OrderCreateController {
#GetMapping("/createOrder")
public String createOrder() {
System.out.println("In Supplier...");
return "Hello consul";
}
}
For Consumer,
orderconsume
pom.xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
application.properties
spring.application.name=orderconsume
server.port=8282
OrderConsumeApplication
#SpringBootApplication
#EnableDiscoveryClient
public class OrderConsumeApplication {
public static void main(String[] args) {
SpringApplication.run(OrderConsumeApplication.class, args);
}
}
OrderConsumeController
#RestController
public class OrderConsumeController {
#Autowired
private RestTemplate restTemplate;
//http://localhost:8282/consumeOrder
#GetMapping(value="/consumeOrder")
public String receiveOrder() {
String uri = "http://ordercreate/createOrder";
return restTemplate.getForObject(uri, String.class);
}
#Bean
public RestTemplate getRestTemplate() {
return new RestTemplate();
}
}
When I am hitting the URL it is downloading the JSP page but when I am using HTML page, it gets rendered in the browser. || HTML 1 - 0 JSP ||
Project structure
Application properties:
spring.mvc.view.prefix=/views/
spring.mvc.view.suffix=.html
Controller
It worked when I have added tomcat-embed-jasper dependency.
Why does that happened?
- It worked when I have added tomcat-embed-jasper dependency. Why does that happened?
Because it needs a webapp container.
I have came across with the same issue, file download every-time when i hit the Page. So, I have makes some changes & error has resolved.
Adding "tomcat-embed-jasper" in pom.xml file
having same version of your tomcat
org.apache.tomcat.embed
tomcat-embed-jasper
9.0.68
Embedded tomcat consider jsp rendering as optional. That's why it is needed.Also As I can understand. You must have provided scope of tomcat-embed-jasper dependency as provided.
You can do as below :
DemoController.java :
#Controller
public class DemoController {
#GetMapping("/")
public String getLoginView(){
return "login";
}
#GetMapping("/welcoome")
public String welcome(){
return "login";
}
}
ApplicationConfigurerAdapter.java
#Configuration
#EnableWebMvc
public class ApplicationConfigurerAdapter extends WebMvcConfigurerAdapter{
#Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
#Bean
public InternalResourceViewResolver viewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
return resolver;
}
}
DemoApplication.java
#Configuration
#EnableAutoConfiguration
#SpringBootApplication
public class DemoApplication extends SpringBootServletInitializer{
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
application.properties
server.contextPath=/
server.servlet.contextPath=/
server.port=6565
pom.xml
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
You can build it as mvn package and can also run outside container(such as Tomcat)
Add this tomcat dependancy to your pom file:
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
I already went through the link: Unable to connect to Command Metric Stream for Hystrix Dashboard with Spring Cloud and tried few options, but nothing worked out for yet.
I am developing Spring Cloud Code + Hystrix + Turbine.
Could you please let me know what is the issue ? I am using Spring Boot v2.0.4.RELEASE.
HystrixDashboardApplication.java
#EnableTurbine
#EnableHystrixDashboard
#SpringBootApplication
public class HystrixDashboardApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixDashboardApplication.class, args);
}
}
pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.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>
<spring-cloud.version>Finchley.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-turbine</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.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
tollrate-billboard application has the following code
TollrateBillboardApplication.java
#EnableCircuitBreaker
#SpringBootApplication
#EnableEurekaClient
public class TollrateBillboardApplication {
public static void main(String[] args) {
SpringApplication.run(TollrateBillboardApplication.class, args);
}
}
DashboardController.java
#Controller
public class DashboardController {
#LoadBalanced
#Bean
public RestTemplate restTemplate(RestTemplateBuilder builder) {
return builder.build();
}
#Autowired
private RestTemplate restTemplate;
#HystrixCommand(fallbackMethod = "getTollRateBackup")
#RequestMapping("/dashboard")
public String GetTollRate(#RequestParam int stationId, Model m) {
TollRate tr = restTemplate.getForObject("http://pluralsight-toll-service/tollrate/" + stationId, TollRate.class);
System.out.println("stationId: " + stationId);
m.addAttribute("rate", tr.getCurrentRate());
return "dashboard";
}
public String getTollRateBackup(#RequestParam int stationId, Model m) {
System.out.println("Fallback operation called");
m.addAttribute("rate", "1.00");
return "dashboard";
}
}
bootstrap.properties
spring.application.name=pluralsight-tollrate-billboard
application.properties
server.port=8082
# eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka/
eureka.client.register-with-eureka=true
eureka.client.fetch-registry=true
#http://cloud.spring.io/spring-cloud-static/Finchley.RELEASE/single/spring-cloud.html#_environment_changes
management.endpoints.web.exposure.include=hystrix.stream
CURL Command Result:
curl "http://localhost:8085/clusters"
output
[
{
"name": "PLURALSIGHT-FASTPASS-CONSOLE",
"link": "http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-FASTPASS-CONSOLE"
},
{
"name": "PLURALSIGHT-TOLLRATE-BILLBOARD",
"link": "http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-TOLLRATE-BILLBOARD"
}
]
EDIT-1::, I am using "hystrix-turbine"
#EnableTurbineStream
#SpringBootApplication
public class HystrixTurbineApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixTurbineApplication.class, args);
}
}
Now, I'm getting below error:
2018-09-03 22:23:45.808 WARN 2820 --- [nio-8085-exec-5] ashboardConfiguration$ProxyStreamServlet : Failed opening connection to http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-FASTPASS-CONSOLE : 404 : HTTP/1.1 404
2018-09-03 22:23:45.808 WARN 2820 --- [nio-8085-exec-2] ashboardConfiguration$ProxyStreamServlet : Failed opening connection to http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-FASTPASS-CONSOLE : 404 : HTTP/1.1 404
#Sayali I tried recreating the error in my own system and I managed to get it working, here are a few checks you can make:
1) The URL in your 1st screenshot is incorrect. Your stream URL in the Hystrix Dashboard should be:
http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-TOLLRATE-BILLBOARD
The url should be pointing to the port of the dashboard application that has #EnableTurbine annotation in your main class.
2) Check if you are getting a response for:
http://localhost:8082/actuator/hystrix.stream
(use your browser for this)
(this should be coming from the application you have enabled hystrix on using #EnableCircuitBreaker)
If you're getting pings, then atleast your hystrix stream is accessible.
If not,
Check if you have: org.springframework.boot:spring-boot-starter-actuator in dependencies and
make sure you have the below property set in application.properties file of the application that has #EnableCircuitBreaker in the main class:
management.endpoints.web.exposure.include= hystrix.stream, info, health
Check the URL again.
3) Please get the turbine section working before moving to turbine streams, so as of now, you can make the following change:
#EnableTurbine // instead of #EnableTurbineStream
#SpringBootApplication
public class HystrixTurbineApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixTurbineApplication.class, args);
}
}
Also, to use TurbineStream:
you might want to have your Hystrix commands push metrics to Turbine.
Spring Cloud enables that with messaging. To do so on the client, add
a dependency to spring-cloud-netflix-hystrix-stream and the
spring-cloud-starter-stream-* of your choice.
refer: http://cloud.spring.io/spring-cloud-static/Finchley.SR1/single/spring-cloud.html#_turbine_stream
I hope this helps. Please comment to help me know if this worked for you.
sorry late reply.
Add following configuration to instance that serve hystrix.stream
hystrix.dashboard.proxyStreamAllowList: '**'
What is the problem? It was working as well while I updated Ubuntu's software
Main.class
package okt.springbootstarter.test;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class CourseApiApp {
public static void main(String[] args) {
SpringApplication.run(CourseApiApp.class, args);
}
}
pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
I don't know where is the problem?
I was facing the same issue.
Try this out, it looks like you are running a wrong class file.
Go to Java file which contains #SpringBootApplication annotation.
e.g (default content):
#SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
I fix it.
>echo $HOSTNAME
xyz
>sudo gedit /etc/hosts
and
127.0.0.1 localhost
changed
127.0.0.1 xyz
it fixed it.
Change this import :
<artifactId>spring-boot-starter-parent</artifactId>
to this :
<artifactId>spring-boot-starter</artifactId>
And after clean and re build maven
I created a springboot (2) webflux project as follow :
JPA Entity
#Entity
#Table(name = "users")
public class User implements Serializable
{
...
}
Spring repository
public interface UserRepository extends CrudRepository<User, Long>
{
}
Service
#Service
public class UserService
{
#Autowired
private UserRepository userRepo;
...
}
Webflux Handler
#Component
public class UserHandler
{
#Autowired
private UserService userService;
public Mono<ServerResponse> getUser(ServerRequest request)
{
...
}
}
RouteConfiguration
#Configuration
public class RouteConfiguration
{
#Bean
public static RouterFunction<ServerResponse> userRoutes(UserHandler userHandler)
{
return RouterFunctions.route(RequestPredicates.GET("/user"), userHandler:: getUser);
}
WebApp
#SpringBootApplication
public class WebApplication
{
public static void main(String[] args)
{
SpringApplication.run(WebApplication.class);
}
}
POM
<dependencies>
<!-- Compile -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<!-- Provided -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!-- Runtime -->
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<!-- Test -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
Everything run fine, I can start my server and use it. I would like now to code some tests. Here is what I did :
#RunWith(SpringRunner.class)
#ContextConfiguration(classes = WebApplication.class)
public class UserHandlerTest
{
#Autowired
private ApplicationContext context;
#MockBean
private UserService userService;
private WebTestClient testClient;
#Before
public void setUp()
{
testClient = WebTestClient.bindToApplicationContext(context).build();
}
#Test
public void testUser()
{
...
}
}
What ever I tried, I got an error with hibernate dependencies during "mvn clean install" process :
[ERROR] testUser(...UserHandlerTest) Time elapsed: 0 s <<< ERROR!
java.lang.IllegalStateException: Failed to load ApplicationContext
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl
Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl
I know JPA works in blocking way but I want to avoid to use NoSQL DB for this project. Did I miss something ? Thank you a lot for help !
Probably, you are missing details which we need to provide for datasource under src/main/resources. you can check https://github.com/hantsy/spring-reactive-sample/blob/master/boot-data-mongo/src/main/resources/application.yml. this might help you.
To test my Spring Webflux controllers, I finally use the WebFluxTest annotation. It works as expected :
#RunWith(SpringRunner.class)
#ContextConfiguration(classes = {RouteConfiguration.class, UserHandler.class})
#WebFluxTest
public class UserHandlerTest
{
#Autowired
private ApplicationContext context;
#MockBean(name="userService")
private UserService userService;
private WebTestClient testClient;
#Before
public void setUp()
{
testClient = WebTestClient.bindToApplicationContext(context).build();
}
...
As I do not use RestController annotation but functional endpoints I had to use ContextConfiguration and manually instantiate the WebTestClient.