I am working with a spring boot project , which deals with redirect attributes . I want to debug my application and its getting stuck at this point .
2020-03-25 20:28:47.785 INFO 13073 --- [ main] .e.d.SpringRedirectattributesApplication : Starting SpringRedirectattributesApplication on rajgopal with PID 13073 (/home/rajgopal/Spring-Boot/spring-redirectattributes/target/classes started by rajgopal in /home/rajgopal/Spring-Boot/spring-redirectattributes)
2020-03-25 20:28:47.792 INFO 13073 --- [ main] .e.d.SpringRedirectattributesApplication : No active profile set, falling back to default profiles: default
Here is my project structure
I am also providing the remaining code
SpringRedirectattributesApplication.java
package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class SpringRedirectattributesApplication {
public static void main(String[] args) {
SpringApplication.run(SpringRedirectattributesApplication.class, args);
}
}
WebConfig.java
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;
#EnableWebMvc
#ComponentScan(basePackages = { "com.example.demo.controller" })
#Configuration
public class WebConfig implements WebMvcConfigurer {
#Bean
public ViewResolver viewResolver() {
final InternalResourceViewResolver bean = new InternalResourceViewResolver();
bean.setViewClass(JstlView.class);
bean.setPrefix("/WEB-INF/view/");
bean.setSuffix(".jsp");
return bean;
}
}
RedirectAttributesExample.java
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import org.springframework.web.servlet.support.RequestContextUtils;
import org.springframework.web.servlet.view.RedirectView;
#Controller
public class RedirectAttributesExample {
#GetMapping("/redirect")
public RedirectView redirectWithRedirectAttributes(RedirectAttributes attributes) {
attributes.addFlashAttribute("flashAttribute", "redirectWithRedirectAttributes");
attributes.addAttribute("attribute", "redirectWithRedirectAttributes");
return new RedirectView("redirectedUrl");
}
#GetMapping("/redirectedUrl")
public ModelAndView redirection(ModelMap model, HttpServletRequest request) {
String some = null, some1 = null;
Map<String, ?> inputFlashMap = RequestContextUtils.getInputFlashMap(request);
if (inputFlashMap != null) {
some = (String) inputFlashMap.get("flashAttribute");
}
some1 = (String) ((Model) model).asMap().get("attribute");
model.addAttribute("redirectionAttribute", some);
model.addAttribute("redirectionAttribute1", some1);
return new ModelAndView("redirection", model);
}
}
redirection.jsp
<%#taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
<title>Spring MVC Form Handling</title>
</head>
<body>
<h2>Submitted Information</h2>
<h3></h3>
<table>
<tr>
<td>1. ${redirectionAttribute}</td>
</tr>
<tr>
<td>2. ${redirectionAttribute1}</td>
</tr>
</table>
</body>
</html>
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>2.2.5.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.baeldung.redirectattributes</groupId>
<artifactId>spring-redirectattributes</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-redirectattributes</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.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Can any one help me to continue debugging the application . I get connection refused error
when I hit this endpoint while debugging .
I was debugging the application to check the contents of some1 variable
http://localhost:8081/redirect
Related
I am learning microservices. Therefore to ensure fault tolerance I wanted to use hystrix.
I use springboot with maven for this implementation. I followed a tutorial to make the implementation and have tried adding various dependencies in the pom.xml. However it wasn't successful. The #HystrixCommand is unable to be imported for the usage. I have attached the sample error shown here below. My micro service application code looks like below.
My Pom.XML file looks like this:
<?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>2.5.7</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>io.javabrains</groupId>
<artifactId>movie-catalog-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>movie-catalog-service</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>17</java.version>
<spring-cloud.version>2020.0.3</spring-cloud.version>
</properties>
<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>
<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-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</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-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>16</source>
<target>16</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
The main method
package io.javabrains.moviecatalogservice;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.context.annotation.Bean;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.reactive.function.client.WebClient;
#SpringBootApplication
#EnableEurekaClient
#EnableHystrix
public class MovieCatalogServiceApplication {
#Bean
#LoadBalanced
public RestTemplate getRestTemplate() {
HttpComponentsClientHttpRequestFactory clientHttpRequestFactory = new HttpComponentsClientHttpRequestFactory();
clientHttpRequestFactory.setConnectTimeout(3000);
return new RestTemplate(clientHttpRequestFactory);
}
public static void main(String[] args) {
SpringApplication.run(MovieCatalogServiceApplication.class, args);
}
}
The controller/ resource class
package io.javabrains.moviecatalogservice.resources;
import com.netflix.discovery.DiscoveryClient;
import io.javabrains.moviecatalogservice.models.CatalogItem;
import io.javabrains.moviecatalogservice.models.Movie;
import io.javabrains.moviecatalogservice.models.Rating;
import io.javabrains.moviecatalogservice.models.UserRating;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.reactive.function.client.WebClient;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
//How to make it REST... Just add the annotation
//So whenever a request is made, it checks the controller for any action to be done
#RestController
//Further to say springboot to treat this as api which is accessible at /catalog/something
#RequestMapping("/catalog")
public class MovieCatalogResource {
#Autowired //I am basically telling spring that somebody has a BEAN somewhere, offsitre restTempltae//GET ME THT THING
private RestTemplate restTemplate;
//
// #Autowired
// private DiscoveryClient client;
//FOR WEB CLIENT
#Autowired
private WebClient.Builder webClientBuilder;
#RequestMapping("/{userId}") //userId is a variable and it will passed
#HystrixCommand(fallbackMethod = "getFallBackCatalog")//teliing hsyutrix that getCatalog shouldnt brak the limit. If it breaks, call getFallBackCatalog
public List<CatalogItem> getCatalog(#PathVariable("userId") String userId){
UserRating ratings = restTemplate.getForObject("http://RATING-DATA-SERVICE/ratingsdata/user/" + userId, UserRating.class);
return ratings.getRatings().stream().map(rating -> {
System.out.println(rating.getMovieId());
Movie movie = restTemplate.getForObject("http://MOVIE-INFO-SERVICE/movies/"+rating.getMovieId(), Movie.class);
return new CatalogItem(movie.getName() , "Test", rating.getRating());
})
.collect(Collectors.toList());
}
public List<CatalogItem> getFallBackCatalog(#PathVariable("userId") String userId){
return Arrays.asList(new CatalogItem("No movie", "", 0));//returning default list
}
}
However, the problem that I get is that I am unable to import the #HystrixCommand as its not getting recognized
Add version in this dependency. Just like this
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
<version>1.4.7.RELEASE</version>
</dependency>
I'm making a MicroServices based project so I have more the one Spring Boot projects in my workspace. I need to configure restOperations in some of then but I want to configure once for all the project that needs. So I'm trying to add my #Configuration class to a jar and import in each MS projects.
The problem is, when I execute the MS project in my server, I receive this error:
***************************
APPLICATION FAILED TO START
***************************
Description:
Field restOperations in com.epavanellio.base.business.controller.BusinessController required a bean of type 'org.springframework.web.client.RestOperations' that could not be found.
The injection point has the following annotations:
- #org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean of type 'org.springframework.web.client.RestOperations' in your configuration.
Here I have my Rest configuration class:
package com.epavanellio.base.restConfig;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.LaxRedirectStrategy;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestOperations;
import org.springframework.web.client.RestTemplate;
//#Component
#Configuration
public class SimpleRestConfiguration {
final CloseableHttpClient httpClient = HttpClientBuilder.create().setRedirectStrategy(new LaxRedirectStrategy())
.build();
#Bean
public RestOperations createRestTemplate(final ClientHttpRequestFactory clientHttpRequestFactory){
return new RestTemplate(clientHttpRequestFactory);
}
#Bean
public ClientHttpRequestFactory createHttpRequestFactory (#Value("${rest.connect.timeout}") final int connectTimeout,
#Value("${rest.read.timeout}") final int readTimeout) {
HttpComponentsClientHttpRequestFactory clientHttpRequestFactory = new HttpComponentsClientHttpRequestFactory();
clientHttpRequestFactory.setConnectTimeout(connectTimeout);
clientHttpRequestFactory.setReadTimeout(readTimeout);
clientHttpRequestFactory.setHttpClient(httpClient);
return clientHttpRequestFactory;
}
}
I imported the .jar (dpdc-rest) with has the SimpleRestConfiguration class in my MS 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 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>2.3.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.epavanellio.base</groupId>
<artifactId>ms-manager-business</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>ms-manager-business</name>
<description>Validate business logic. A microservice based project. </description>
<packaging>war</packaging>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>com.epavanellio.base</groupId>
<artifactId>domain</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.epavanellio.base</groupId>
<artifactId>dpdc-rest</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.epavanellio.base</groupId>
<artifactId>dpdc-custom-exception-handler</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator-annotation-processor</artifactId>
</dependency>
<dependency>
<groupId>javax.el</groupId>
<artifactId>javax.el-api</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>javax.el</artifactId>
<version>2.2.6</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</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>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<finalName>ms-manager-business</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
and in my MS application class is like this:
package com.epavanellio.base.business;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Import;
import com.epavanellio.base.restConfig.SimpleRestConfiguration;
//#SpringBootApplication(scanBasePackages={"com.epavanellio.base", "com.epavanellio.base.restConfig"})
//#Import(SimpleRestConfiguration.class)
//#ComponentScan({"com.epavanellio.base", "com.epavanellio.base.restConfig"})
#ComponentScan("com.epavanellio.base")
#EntityScan("com.epavanellio.base.domain")
#EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class,HibernateJpaAutoConfiguration.class})
#SpringBootApplication
public class BusinessApplication extends SpringBootServletInitializer{
public static void main(String[] args) {
SpringApplication.run(BusinessApplication.class, args);
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(BusinessApplication.class);
}
}
as you can see commented, I already tried to my make my runtime "see" my configuration class in diffrent ways:
First I tried to add (scanBasePackages={"com.epavanellio.base", "com.epavanellio.base.restConfig"}) after my annotation #SpringBootApplication, but the same error occurs. Then I tried to add specifically the SimpleRestConfiguration class package to the #ComponentScan annotation(for this, I uncommented the #Component annotation in SimpleRestConfiguration class), but the same error occurs. At least I tried to use #Import, but in this case I receive the error:
java.io.FileNotFoundException: class path resource [com/epavanellio/base/restConfig/SimpleRestConfiguration.class] cannot be opened because it does not exist
does any one know how can I make my application class to "see" my
#Configuration class?
The problem was Maven, for some reason maven was no recognizing my jar.
so I made a new dependency project, with a new name but same same SimpleRestConfiguration class. I imported the new .Jar to my MS and then works fine.
My application become like this:
#ComponentScan("com.epavanellio.base")
#EntityScan("com.epavanellio.base.domain")
#EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class,HibernateJpaAutoConfiguration.class})
#SpringBootApplication
public class UserApplication extends SpringBootServletInitializer{
public static void main(String[] args) {
SpringApplication.run(UserApplication.class, args);
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(UserApplication.class);
}
}
I am trying to run a simple Spring Boot application. However when I run it, I get the following error:
"Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback."
Tue Nov 12 09:31:36 AST 2019
There was an unexpected error (type=Not Found, status=404).
/WEB-INF/view/index.jsp
Here 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>2.2.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>jspDemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>jspDemo</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-tomcat</artifactId>
</dependency>
<!-- JSTL -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!-- To compile JSP files -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
IndexController.java
package com.pack.springMVC;
import java.util.Map;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
#Controller
public class IndexController {
#RequestMapping("/")
public String home(Map<String, Object> model) {
model.put("message", "HowToDoInJava Reader !!");
return "index";
}
#RequestMapping("/next")
public String next(Map<String, Object> model) {
model.put("message", "You are in new page !!");
return "next";
}
}
MvcConfiguration.java
package com.pack.springMVC;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;
#Configuration
#EnableWebMvc
#ComponentScan
public class MvcConfiguration implements WebMvcConfigurer
{
#Override
public void configureViewResolvers(ViewResolverRegistry registry) {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/view/");
resolver.setSuffix(".jsp");
resolver.setViewClass(JstlView.class);
registry.viewResolver(resolver);
}
}
JspDemoApplication.java
package com.pack.springMVC;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
#SpringBootApplication
public class JspDemoApplication extends SpringBootServletInitializer {
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(JspDemoApplication.class);
}
public static void main(String[] args) {
SpringApplication.run(JspDemoApplication.class, args);
}
}
index.jsp
<!DOCTYPE html>
<%# taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<html lang="en">
<body>
<div>
<div>
<h1>Spring Boot JSP Example</h1>
<h2>Hello ${message}</h2>
Click on this <strong>link</strong> to visit another page.
</div>
</div>
</body>
</html>
next.jsp
<!DOCTYPE html>
<%# taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<html lang="en">
<body>
<div>
<div>
<h1>Another page</h1>
<h2>Hello ${message}</h2>
Click on this <strong>link</strong> to visit previous page.
</div>
</div>
</body>
</html>
application.properties
spring.mvc.view.prefix=/WEB-INF/view/
spring.mvc.view.suffix=.jsp
Try with this
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;
#Configuration
#EnableWebMvc
#ComponentScan
public class MvcConfiguration extends WebMvcConfigurerAdapter
{
#Override
public void configureViewResolvers(ViewResolverRegistry registry) {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/view/");
resolver.setSuffix(".jsp");
resolver.setViewClass(JstlView.class);
registry.viewResolver(resolver);
}
}
I am getting below error:
There was an unexpected error (type=Not Found, status=404). No message available
While using Spring Boot + Thymeleaf
Code:
Application class:
package com.mycom.extract;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
#SpringBootApplication(scanBasePackages = "com.mycom.extract")
public class MyAppExtractionWebApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(MyAppExtractionWebApplication.class, args);
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(MyAppExtractionWebApplication.class);
}
}
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.mycom.extract</groupId>
<artifactId>MyApp-extraction</artifactId>
<version>1</version>
<packaging>war</packaging>
<name>MyAppExtractionWeb</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.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>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<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.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-integration</artifactId>
</dependency>
<dependency>
<groupId>com.jcraft</groupId>
<artifactId>jsch</artifactId>
<version>0.1.54</version>
</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-security</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
</dependency>
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity4</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>
SecurityConfig
package com.mycom.extract.config.security;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
#Configuration
#EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
#Autowired
private MyAppAuthenticationProvider authProvider;
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.authenticationProvider(authProvider);
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
.antMatchers("/css/**", "/login").permitAll()
.antMatchers("/*").fullyAuthenticated()
.and()
.formLogin().loginPage("/login")
.loginProcessingUrl("/j_spring_security_check")
.usernameParameter("ipn").passwordParameter("password")
.defaultSuccessUrl("/home").failureUrl("/login?error")
.and()
.logout().logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
.logoutSuccessUrl("/login");
http.csrf().disable();
}
}
WebMvcConfiguration
package com.mycom.extract.config;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
#EnableAutoConfiguration
#Configuration
#ComponentScan(basePackages = { "com.mycom.extract" })
public class MyAppConfiguration extends WebMvcConfigurerAdapter{
#Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addRedirectViewController("/", "/login");
registry.addViewController("/login").setViewName("index");
registry.addViewController("/home").setViewName("home");
}
}
Referring all same kind of post in Stackoverflow could find solution for myself.
Please suggest.
URL http://localhost:8080/MyAppExtractionWeb/
As I am setting up login, and authentication is handled at security config side, so once it is successful it shows home page. Hence no controller mentioned.
package com.mycom.config.security;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.login.LoginContext;
import org.springframework.beans.factory.annotation.Autowired;*/
import java.util.Collection;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import com.mycom.entity.User;
import com.mycom.service.UserService;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
#Configuration
public class MyAppAuthenticationProvider implements AuthenticationProvider {
private static final String SECURITY_DOMAIN = "MyApp-ldapdomain";
#Autowired
private UserService userService;
#Override
public Authentication authenticate(Authentication authentication) {
String name = authentication.getName();
String password = authentication.getCredentials().toString();
try {
CallbackHandler handler = new UserPasswordHandler(name, password);
LoginContext lc = new LoginContext(SECURITY_DOMAIN, handler);
lc.login();
if(lc.getSubject() != null) {
User user = userService.loadUserByUsername(name);
Collection<? extends GrantedAuthority> roles = null;
if(!user.getAuthorities().isEmpty()) {
roles = user.getAuthorities();
}
return new UsernamePasswordAuthenticationToken(name, password,roles);
} catch (Exception e) {
return null;
}
}
#Override
public boolean supports(Class<?> authentication) {
return authentication.equals(UsernamePasswordAuthenticationToken.class);
}
}
I tried to change an web application from simple broker to an embedded ActiveMq Broker with stomp using Spring boot 1.5.4 but always getting an error on start up
Caused by: java.lang.IllegalArgumentException: No handlers
at org.springframework.util.Assert.isTrue(Assert.java:92) ~[spring-core-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.web.socket.messaging.SubProtocolWebSocketHandler.start(SubProtocolWebSocketHandler.java:244) ~[spring-websocket-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:175) ~[spring-context-4.3.9.RELEASE.jar:4.3.9.RELEASE]
... 15 common frames omitted
I reduced the failure with an simple example
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.example</groupId>
<artifactId>websocket</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>websocket</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.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>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-activemq</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-configuration-processor</artifactId>
</dependency>
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-stomp</artifactId>
</dependency>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-net</artifactId>
</dependency>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-core</artifactId>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
<version>4.1.2.Final</version>
</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>
Application Class
package com.example.websocket;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class WebsocketApplication {
public static void main(String[] args) {
SpringApplication.run(WebsocketApplication.class, args);
}
}
WebSocketConfig Class
package com.example.websocket;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.jms.annotation.EnableJms;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurationSupport;
#Configuration
#EnableWebSocket
#EnableWebSocketMessageBroker
#EnableJms
public class WebSocketConfig extends WebSocketMessageBrokerConfigurationSupport {
#Value("${spring.activemq.user}")
private String mqUser;
#Value("${spring.activemq.password}")
private String mqPasword;
#Override
public void configureMessageBroker(final MessageBrokerRegistry config) {
config.enableStompBrokerRelay("/topic") //
.setRelayHost("localhost") //
.setRelayPort(61613) //
.setClientLogin(mqUser) //
.setClientPasscode(mqPasword) //
;
config.setApplicationDestinationPrefixes("/app");
}
#Override
public void registerStompEndpoints(final StompEndpointRegistry registry) {
registry.addEndpoint("/websocket").withSockJS();
}
}
application.yml
spring:
activemq:
broker-url: stomp://localhost:61613
user: user
password: pass
Someone knows my mistake?
I found the solution. My problem was the EnableWebSocketMessageBroker Annotation and missing deployment of ActiveMQ Broker
Remove the application.yml and change WebSocketConfig class to
package com.example.websocket;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.jmx.ManagementContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurationSupport;
#Configuration
#EnableWebSocket
public class WebSocketConfig extends WebSocketMessageBrokerConfigurationSupport {
#Override
public void configureMessageBroker(final MessageBrokerRegistry config) {
config.enableStompBrokerRelay("/topic") //
.setRelayHost("localhost") //
.setRelayPort(61613);
config.setApplicationDestinationPrefixes("/app");
}
#Override
public void registerStompEndpoints(final StompEndpointRegistry registry) {
registry.addEndpoint("/websocket").withSockJS();
}
#Bean(initMethod = "start", destroyMethod = "stop")
public BrokerService broker() throws Exception {
final BrokerService broker = new BrokerService();
broker.addConnector("stomp://localhost:61613");
broker.setPersistent(false);
final ManagementContext managementContext = new ManagementContext();
managementContext.setCreateConnector(true);
broker.setManagementContext(managementContext);
return broker;
}
}
works for me.