I'm currently using an index.html in my public folder. It was displaying correctly, then somewhere along development, the routing broke and now
http://localhost:8080/ shows:
{
"_links" : {
"users" : {
"href" : "http://localhost:8080/users"
},
"profile" : {
"href" : "http://localhost:8080/alps"
}
}
}
instead of my index.html. Strangely enough the users link returns a json list of my users table.
How do I revert back to my index.html page?
Application.java
package com.exp;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.annotation.EnableScheduling;
#SpringBootApplication
#EnableAutoConfiguration(exclude = { JacksonAutoConfiguration.class })
#EnableAsync
#EnableScheduling
public class Application extends SpringBootServletInitializer {
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(Application.class);
}
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
Obviously you have added Spring Data REST as dependency, which produces this output. However, it should only show this, if you use the Accept header with application/json in your request which shouldn't be the case for a regular browser.
One solution would be to remove this dependency.
The other solution would be, that you change the base path for Spring Data REST, so you can distinguish it from the other resources in your application. For that, add the following property to your application.properties:
spring.data.rest.base-uri=/yourbasepath
I had an empty folder src/main/webapp that was being picked up before public/. Could have possibly been created when I changed my spring boot packaging from jar to war.
deleting the webapp folder, or shifting files from public to webapp solves the issue.
Related
A web application I've been working on recently the past like 2 weeks maybe for whatever reason when I finally tested it - won't seem to even enter the method that I have to return a JSON list of objects. I have included the Jackson library and Spring Boot Web, Tomcat, Data-JPA, Hibernate, MySQL, and a library to allow me to access JSP files. The index.jsp comes up but I almost feel like Spring Boot is giving me that free of charge as it's not even entering that method. I have been having the issue for a few days but trying to resolve it on my own - I found another answer that suggested to put a breakpoint inside one of the Spring classes but when I "debugged" it through Eclipse, it didn't even stop at that class - something about pattern matching - One answer suggested adding a context to the application.properties file - didn't help. I've reduced it to as simple as I think I can get it. Can anyone tell me what I might be doing wrong? Before my code, the project is on Github at: https://github.com/sfulmer/Scheduler.git
Here's my controller:
package net.draconia.schedule.controllers;
import java.util.List;
import net.draconia.schedule.beans.Event;
import net.draconia.schedule.dao.EventDAO;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
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.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
#Controller
public class ScheduleController
{
private static final Logger logger = LoggerFactory.getLogger(ScheduleController.class);
#Autowired
private EventDAO mObjDAO;
protected EventDAO getDAO()
{
return(mObjDAO);
}
//#GetMapping("/events")
#RequestMapping(value = "events", method = RequestMethod.GET)
public #ResponseBody List<Event> getEvents()
{
logger.debug("I got here");
return(getDAO().getList());
}
#GetMapping("/")
public String index()
{
return("index");
}
}
Here is the DAO interface - I'll show the class if necessary but this is what the controller looks at:
package net.draconia.schedule.dao;
import java.util.List;
import javax.persistence.EntityNotFoundException;
import net.draconia.schedule.beans.Event;
public interface EventDAO
{
public Event getEventById(final long lId) throws EntityNotFoundException;
public List<Event> getList();
public void remove(final Event objEvent);
public void removeById(final long lId);
public Event save(final Event objEvent);
}
The Event class is so long but if I need to include it, I will. The application.properties file is here:
spring.datasource.url = jdbc:mysql://localhost:3306/schedule
spring.datasource.username = root
spring.datasource.password = R3g1n# M1lL$ 1$ My Qu3eN!
spring.mvc.view.prefix: /WEB-INF/jsp/
spring.mvc.view.suffix: .jsp
server.servlet.contextPath=/scheduler
and here is my Application class(with the SpringBootApplication annotation):
package net.draconia.schedule;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
#SpringBootApplication(scanBasePackages = {"net.draconia.schedule.controller"})
public class ScheduleApp implements WebMvcConfigurer
{
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder)
{
return(builder.sources(ScheduleApp.class));
}
public static void main(String[] args)
{
SpringApplication.run(ScheduleApp.class, args);
}
}
I'm relatively new to Spring Boot but haven't ever ran into this problem ever before as I work with it at work and it works fine but we use entirely REST services there and I am using JSP files as well as sorta end-points that respond with JSON but you can't respond from REST services with JSP views so unfortunately I can't copy work's project to get that working or I would sigh Any thoughts on how I can get this working or what I am omitting?
My guess is that you're mixing things from Spring and Spring boot, and that's getting problems on loading beans, as you're probably changing the annotations load order or loading other beans rather than spring boot defaults as expected. For example, you implements WebMvcConfigurer, but you aren't providing any WebMvc Configuration, like a ViewResolver bean
My advice is to follow this guide: https://spring.io/guides/gs/spring-boot/
and use only the annotations from spring boot if using spring boot, or spring if using spring (they're similar, but not exactly the same, configuration is different).
Anyways, you can check loaded beans in Spring application context (Inject it in Application class) with ctx.getBeanDefinitionNames() method and see if your controller is there (i guess not).
By looking into code, my first impression is that, you have some typo in here:
#SpringBootApplication(scanBasePackages = {"net.draconia.schedule.controller"})
Your controller class package name has net.draconia.schedule.controllers.
So can you please correct your scanBasePackages with proper package name.
If that is not the case, please update full stack trace along with GET request which you are submitting into application. Will take a look & update answer accordingly.
I have spring jar for my entity beans created as export--java--JARfile, where i have beans defined as follows:
package com.my.beans;
#Component("expBean")
public class ExpBean {
}
I also have config in this jar
package com.my;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
#Configuration
public class pBeanConfig {
#Bean
public ExpBean getExpBean() {
return new ExpBean();
}
}
I have client spring application where i am adding above jar having only beans as by external dependency and trying to get my beans when spring app starts using following code in main code in client spring app.
package com.my;
import java.util.Arrays;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.ComponentScan;
#SpringBootApplication()
#ComponentScan("com.my")
public class Application {
public static void main (String[] args) {
ApplicationContext ctx = SpringApplication.run(Application.class, args);
String[] beanNames = ctx.getBeanDefinitionNames();
Arrays.sort(beanNames);
for (String beanName : beanNames) {
System.out.println(beanName);
}
WMyBean bean = (WMyBean) ctx.getBean("expBean");
bean.doSomething();
}
}
But when checked the list of bean definition printed, i do not see my bean from external jar and also i get following error.
"Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'expBean' available"
I tried many options but not sure whats missing.
Option 1
#ComponentScan("com.my")
#SpringBootApplication
public class Application {
Option 2
#ComponentScan({"com.my"})
#SpringBootApplication
public class Application {
Need valuable inputs on step that i am missing out.
Question 1: Is it mandatory for me to do config change in client project to access my dependent jar entities?
Question 2: Can it be dynamic, load all entities without configuration as #bean in client project config?
Question 3: Do i need to build client jar every-time i change my dependent jar file with more entities?
Thanks
First I am assuming the build tool is Gradle, but you can import the jar as a local file like this for the sake of experiment:
dependencies {
implementation files('libs/something_local.jar')}
Then, assuming you use Eclipse you can right click the project folder and do a 'Gradle refresh'
In your config class you can either autowire in the bean for the class as a whole , or choose to create it whenever an instance of the class is created by declaring it within the class constructor:
import org.springframework.beans.factory.annotation.Autowired;
//I also have config in this jar
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
#Configuration
public class pBeanConfig {
//Autowire in the bean for the whole class.
#Autowired
ExpBean expBean;
public pBeanConfig() {
//Or, you may want to have a bean instance whenever the pBeanConfig class is instantiated.
ExBean exBean;
}
}
I'm making a number of assumptions for this answer like it's a Gradle project, but you can set up a similar dependency for Maven by modifying the POM file to include that file.
Build tools aside, in Eclipse you can simply add the jar file by right clicking the project and build path => configure build path => add external jar file.
UPDATE:
This pic describes how I set up the bean within a separate jar file via eclipse. The steps should show that the bean can be reached with this project even though it's in a jar and not in the project itself.
I have two different maven projects in first I am trying to keep two modules one for "repository and entities" and second for the services. The second project is containing only one module with the "controllers". Now I am having many problems first is "Not a managed type" for the entities. Another thing if I keep everything in one module or even in different modules with one parent project, it works flawlessly, however, I am just trying to put the different package in different project and module
The entityscan, enablejparepositries and all others are working, the debug states:
name: default
persistence provider classname: null
classloader: sun.misc.Launcher$AppClassLoader#42a57993
excludeUnlistedClasses: true
JTA datasource: null
Non JTA datasource: HikariDataSource (null)
Transaction type: RESOURCE_LOCAL
PU root URL: file:/F:/Software/MavenRepo/com/company/repo/1.0.0/repo-1.0.0.jar
Shared Cache Mode: UNSPECIFIED
Validation Mode: AUTO
Jar files URLs []
Managed classes names [
com.company.sitemap.repo.Page]
Mapping files names []
Properties []
However, At the last it states
Caused by: java.lang.IllegalArgumentException: Not a managed type: class com.company.sitemap.repo.Page
and shows error starting the application.
Can you please help me out with this?
Here is my Application class file
package com.company.sitemap;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import com.company.sitemap.repo.SitemapRepoConfig;
import com.company.sitemap.service.SitemapConfig;
#SpringBootApplication
#EnableJpaRepositories(basePackageClasses = { SitemapRepoConfig.class })
#EntityScan(basePackages = {"com.nie.learn.sitemap.repo"})
#ComponentScan(basePackageClasses = { SitemapConfig.class, SitemapRepoConfig.class })
public class Sitemap extends SpringBootServletInitializer {
public static void main(String[] args) {
ConfigurableApplicationContext applicationContext = SpringApplication.run(Sitemap.class, args);
for (String name : applicationContext.getBeanDefinitionNames()) {
System.out.println(name);
}
}
}
The entity class resides in different project and module. Let say Project-libs and module module-repo. I am trying to add this as a maven dependency.
The entity file is as follows:
package com.company.sitemap.repo;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
#Entity
public class Page {
Repo config to scan repo classes.
package com.company.sitemap.repo;
import org.springframework.context.annotation.Configuration;
#Configuration
public class SitemapRepoConfig {
}
Service config to scan service classes:
package com.company.sitemap.service;
import javax.validation.constraints.NotNull;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.company.sitemap.repo.PageRepository;
#Configuration
public class SitemapConfig {
#Bean
#NotNull
public SitemapService service(#NotNull PageRepository repo) {
return new SitemapService(repo);
}
}
I'll show you an example that helps us in a somewhat different case. This kind of config is used for Module1TestConf to allow separate modules testing using Spring boot slicing (#DataJpaTest, etc.) in our multi-module Gradle project to avoid loading all the context.
We just limit our module scanning to the current module + additional entities.
#SpringBootConfiguration
#EnableAutoConfiguration
#EntityScan(
basePackages = "your.other.module.package.entity",
basePackageClasses = {SomeEntity1.class, SomeEntity2.class}
)
#ComponentScan(
value = "your.current.module.package",
excludeFilters = {
#ComponentScan.Filter(type = FilterType.CUSTOM, classes = TypeExcludeFilter),
#ComponentScan.Filter(type = FilterType.CUSTOM, classes = AutoConfigurationExcludeFilter)})
That is basically what is #SpringBootApplication is doing under the hood.
So I'm not 100% sure that it would help you. Is there a valid reason to have the projects kept as separate maven projects (use Gradle! :) )?
Anyway, you just need to make those entities scanned by Spring and become manageable...
Also try specifying entity classes directly in basePackageClasses.
You need to scan the package so that spring can create beans automatically. You are defining Page as bean but not scanning it. For scan you need to add
#ComponentScan(basePackages = { "com.nie.learn.*" })
If you have already added it than please check if Page is annotated with #Entity like below
#javax.persistence.Entity
public class Page {}
#SpringBootApplication
#EnableJpaRepositories(basePackageClasses = { com.company.sitemap.repo})
#EntityScan(basePackages = {"com.company.sitemap.repo"})
public class Sitemap extends SpringBootServletInitializer {
public static void main(String[] args) {
ConfigurableApplicationContext applicationContext = SpringApplication.run(Sitemap.class, args);
for (String name : applicationContext.getBeanDefinitionNames()) {
System.out.println(name);
}
}
}
Try the above configuration.
I am new to Spring / Spring Boot, so please pardon if what I am asking is trivial.
I have created Spring Boot application which exposes the REST endpoint:
package com.atomic.contentguard;
...
#Controller
#RequestMapping("/rest")
public class AcgController {
#RequestMapping(value="/acg-status",method=RequestMethod.GET)
#ResponseBody
public String getStatus(){
return "Hi there!";
}
}
It all works fine when you run it as standalone Spring Boot application, the endpoint is testable by going to http://localhost:8080/rest/acg-status.
What I want to achieve is to "bring it" into another application, which would be including my application as a dependency in the pom.xml, expecting this REST endpoint to show up in it.
What I've done so far is included it in another project pom.xml as:
</dependencies>
...
<dependency>
<groupId>com.atomic</groupId>
<artifactId>contentguard</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
And then included it in that other application #ComponentScan section of config file:
#Configuration
#EnableWebMvc
#ComponentScan(basePackages = {"com.atomic.contentguard"})
public class EnvInfoWebConfig extends WebMvcConfigurerAdapter {
}
It does not however show up when you run target application:
No mapping found for HTTP request with URI [/other-application-context/rest/acg-status] in DispatcherServlet with name 'envinfo-dispatcher'
What am I missing / doing wrong?
You can do this simply by using the spring boot Application Launcher class in your main project as below (You don't need WebMvcConfigurerAdapter class):
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
#SpringBootApplication
#ComponentScan(basePackages = { "com.atomic.contentguard"})
public class AcgLauncher extends SpringBootServletInitializer {
//This method is required to launch the ACG application
public static void main(String[] args) {
// Launch Trainserv Application
SpringApplication.run(AcgLauncher.class, args);
}
}
Spring Boot uses this class during the server startup and scans the specified packages for all spring components (controllers, services, components).
How to create a Spring Java Web socket project with XML or Java Config but without Spring Boot. Where can I find a step-by-step tutorial. I dont know how to use spring boot in ecliplse. Also I dont want to use gradle or maven. I did not find a tutorial to use spring boot in eclipse. As I am new to spring I am unable to start a project without maven or gradle. I need to learn how to create a spring project without any built tool provided I need to use Eclipse. This is purly for learning puropse.
Below is the classes I used to replace Spring boot related main class
AppConfig Class
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
#Configuration
#ComponentScan("hello")
#EnableWebMvc
public class AppConfig {
}
WebAppInitializer Class
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration.Dynamic;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
public class WebAppInitializer implements WebApplicationInitializer{// extends AbstractAnnotationConfigDispatcherServletInitializer {
public void onStartup(ServletContext servletContext) throws ServletException
{
try
{
AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
ctx.register(AppConfig.class);
ctx.setServletContext(servletContext);
Dynamic dynamic = servletContext.addServlet("dispatcher", new DispatcherServlet(ctx));
dynamic.addMapping("/");
// dynamic.addMapping("/springStomp/");
dynamic.setLoadOnStartup(1);
//dynamic.setAsyncSupported(true);
//ctx.refresh();
System.out.println("config done");
}
catch(Exception e)
{
e.printStackTrace();
System.out.println("error");
}
}
}
WebSocketConfig Class
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.AbstractWebSocketMessageBrokerConfigurer;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
#Configuration
#EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
#Override
public void configureMessageBroker(MessageBrokerRegistry config) {
System.out.println("inside websocket config class");
config.enableSimpleBroker("/topic");
config.setApplicationDestinationPrefixes("/app");
}
#Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/hello").withSockJS();
}
}
Remaining is same as in spring web socket tutorial
I know how that feels, my company network is unfriendly towards my maven calls to download dependencies. If you had to do things the hard way like me goto www.mvnrepository.com and just type spring in the search and you can download the jars you need. If you encounter any NoClassDef errors during deployment or compilation it usually tells you what you are missing, then search for the keywords again in the link.
Just:
add gradle plugin in eclipse
import following project from spring site as gradle project
???
Profit!
Than if you don't want use spring boot remove any spring boot dependincies, add regular deps like spring-context, spring-webmvc, etc. And finally add spring-websocket and spring-messaging libraries.