spring-framework | Spring Framework : the foundation for all Spring projects | Model View Controller library
kandi X-RAY | spring-framework Summary
kandi X-RAY | spring-framework Summary
This is the home of the Spring Framework: the foundation for all Spring projects. Collectively the Spring Framework and the family of Spring projects are often referred to simply as "Spring". Spring provides everything required beyond the Java programming language for creating enterprise applications for a wide range of scenarios and architectures. Please read the Overview section as reference for a more complete introduction.
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Top functions reviewed by kandi - BETA
- Reads the bytecode instructions .
- Deeply compare two objects .
- Instantiates a bean using the factory method .
- Puts this method information into the given byte vector .
- Attempts to reconcile the declared parameters .
- Emits the generated methods .
- Generate code for comparison .
- Determine the candidate constructors for the specified bean class .
- Invoke the given method .
- Attempt to match a pattern .
spring-framework Key Features
spring-framework Examples and Code Snippets
Java 17+ (from Java 8-17 in the Spring Framework 5.3.x line)
Jakarta EE 9+ (from Java EE 7-8 in the Spring Framework 5.3.x line)
4.0.0
com.brightdome
spring-configurable-sample
0.0.1-SNAPSHOT
Spring Configurable Sample
Sample project to show how to work with Spring's @Configurable capability
to inject dependencies into classes not instantiated
import com.nimbusds.jose.JOSEException;
import com.nimbusds.jose.jwk.RSAKey;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotatio
adduser -D spring -g "test" -s /bin/sh -D spring
su -s /bin/bash spring <
enum Season {
SPRING ( "Spring" ),
SUMMER ( "Summer" ),
WINTER ( "Winter" ),
AUTUMN ( "Autumn" );
private String displayName ;
Season ( String displayName ) {
this.displayName =
On click of button, call a Javascript function which will send an Ajax POST request to the Controller.
JavaScript Code:
const holdingTimes = [];
holdingTimes.push(10);
holdingTimes.push(20);
holdingTimes.push(30);
@TransactionalEventListener(classes = {SellVoucherEvent.class})
public void dispatch(SellVoucherEvent event) {
sqsClient.sendMessage("queue", turnEventToString(event));
}
private final ApplicationEventPublisher
spring.cloud.stream.bindings.output.destination=foo
spring.cloud.stream.rabbit.bindings.output.producer.exchange-type=direct
logging.level.root=warn
@SpringBootApplication
public class So71414000Application {
org.springframework.cloud
spring-cloud-dependencies
${spring-cloud.version}
pom
import
org.springframework.boot
spring-boot-starter
org.springf
@Configuration
public class WebConfig extends WebMvcAutoConfiguration implements WebMvcConfigurer {
// Spring Boot 2.3.9.RELEASE
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
Community Discussions
Trending Discussions on spring-framework
QUESTION
I am using Spring and JUnit 5.
In Spring tests, created contexts are cached so that they don't need to be re-created for each test.
However, according to the Spring documentation, this caching does not work when tests are executed in parallel:
Test suites and forked processes
The Spring TestContext framework stores application contexts in a static cache. This means that the context is literally stored in a static variable. In other words, if tests run in separate processes, the static cache is cleared between each test execution, which effectively disables the caching mechanism.
Is there a way, in which one can use JUnit 5's parallel test execution and still profit from Spring's context caching? Is there a parallel execution configuration that still works with Spring's context caching?
...ANSWER
Answered 2022-Mar-25 at 08:15It seems that JUnit 5's parallel test execution works without problems with Spring's test context caching.
For parallel test execution, JUnit 5 seems to use a ForkJoinPool
under the hood. Multiple threads can access the statically cached Spring test contexts without a problem.
QUESTION
i have got simple method in controller which streams content from database, streaming works as intended, download starts right after calling endpoint. Problem is heap usage, streaming 256 MB file takes 1GB heap space. If I would replace service.writeContentToStream(param1, param2, out)
with method that reads data from local file to input stream and copying to passed output stream result is same. Biggest file I can stream is 256 MB. Is there possible solution to overcome heap size limit?
ANSWER
Answered 2021-Dec-29 at 11:55Some ideas:
Run the server inside the Java profiler. For example JProfiler (it costs money).
Try
ServletResponse.setBufferSize(...)
Check, if you have some filters configured in the application.
Check the output buffer of the application server. In case of the Tomcat it could be quite tricky. It has a long list of possible buffers:
QUESTION
My question is very similar to this question that has already been asked and answered but is not 100% up-to-date.
We used the solution from Chris Gaskill for quite some time and it suited us perfectly because we wanted to redirect requests that contain more than one path segment (i.e. /foo/bar
)
From Spring Boot 2.4 on, Boot uses the PathPatternParser
instead of the AntPathMatcher
, wherein the former does not support **
at the start of a pattern anymore (see docs).
Is there some other solution to get the same behavior? What do you use to redirect all requests, that did not match anything else, to the index.html
of the Angular app?
This is the code of the controller that forwards the requests.
...ANSWER
Answered 2022-Feb-23 at 15:02Have you tried to implement redirection on Angular side? In my application I've solved this like:
QUESTION
I am trying to enable AspectJ load-time weaving (not Spring AOP) in a Spring Boot application. My goal is to weave advice into annotated fields and java.lang.reflect.Field.set(Object, Object)
at load-time.
Per the Spring docs, I tried:
...ANSWER
Answered 2022-Feb-04 at 03:02I am not an active Spring user, but I know that Spring supports annotation- or XML-configured agent hot-attachment and has some container-specific classes for that according to its documentation. It does not seem to work reliably in all situations, though, especially when running a Spring Boot application from an IDE or so.
Anyway, the AspectJ weaver 1.8.7 and more recent can be hot-attached. I explained how to do that in a Spring setup here. If you want a simpler solution with less boilerplate but one more dependency to a tiny helper library called byte-buddy-agent
, you can use this solution as a shortcut. I have not tried it, but I know the helper library and am using it myself in other contexts when hot-attaching bytecode instrumentation agents, avoiding the fuss to cater to different JVM versions and configuration situations. But in order for that to work on JVM 9+, you might need to manually activate auto-attachment for the JVM, which would be another modification for your start-up script, and you would be back to square 1.
QUESTION
I'm maintaining a Spring Boot Application that uses Swagger to define Rest web services and uses Maven for dependency management. It uses an application.yml file for properties. By default, when an error occurs, a Whitelabel page is displayed in any browser.
The parent in the application's pom.xml is defined as follows:
...ANSWER
Answered 2022-Jan-21 at 12:54SOLVED
The solution is as follows:
Do not disable the Whitelabel display from the properties file or from the main class.
Define the error view resolver completely as in solution 3.
The HTML pages must be in resources/templates
You must add the following dependency to your application's pom.xml
QUESTION
I was setting up a basic CRUD web app with JPA in plain Spring (no Spring Boot or Spring Data JPA) for educational purposes and faced a strange problem: Spring doesn't translate exceptions for my repository. According to the Spring documentation (here and here), it is sufficient to mark the repository with the @Repository
annotation and Spring will automatically enable exception translation for this repository.
However, when I did so and triggered a UNIQUE
constraint violation, I still was getting a JPA PersistenceException
(with a Hibernate ConstraintViolationException
inside) instead of the Spring DataIntegrityViolationException
.
I used pure Java Spring configuration and it took me quite some time to realize that I should compare it with the XML configuration in the documentation. Compared to the pure Java configuration, the XML configuration adds a PersistenceExceptionTranslationPostProcessor
into the context. When I added it manually with @Bean
, it worked, but now I have a question.
Have I misconfigured something? The Spring documentation doesn't require registering that post-processor manually for pure Java configuration. Maybe there is another way to register it, say an @EnableXXX
annotation?
Here is the summary of my configuration.
...ANSWER
Answered 2022-Jan-10 at 18:54It requires to manually register PersistenceExceptionTranslationPostProcessor
in order for the exception translation to take effect.
The documentation you mentioned simply does not updated yet to show a fully working java configuration. It should mention to register this post processor. ( So feel free to provide a PR to update the docs.).
If you check from its javadoc , it already mentioned PersistenceExceptionTranslationPostProcessor
is necessary to be registered :
As a consequence, all that is usually needed to enable automatic exception translation is marking all affected beans (such as Repositories or DAOs) with the @Repository annotation, along with defining this post-processor as a bean in the application context.
P.S. If you are using spring-boot , and if it detects PersistenceExceptionTranslationPostProcessor
is in the class-path , it will automatically register it by default such that you do not need to register manually.
QUESTION
When using MockRestServiceServer with andExpect
to test
...
ANSWER
Answered 2021-Dec-27 at 18:04The idea of MockRestServiceServer
is that it allows you mock the external server such that the RestTemplate
does not really need to send the requests to the actual server during the testing. Instead it just sends the requests to this MockRestServiceServer
(think that it is a kind of in-memory server) and it will return the configured mocked responses for the corresponding requests.
You have to configure all the expected requests that the MockRestServiceServer
will received and its corresponding responds before the test.
So basically there are two things needed to be verified which are :
For every request sent by
RestTemplate
, there should be a mocked response configured for that request in theMockRestServiceServer
For all the requests that are to be expected to be received on the
MockRestServiceServer
, the RestTemplate should really send out all of these expected requests.
(1) will be verified automatically whenever the RestTemplate
send out a request. The exception no further requests expected: HTTP
that you mentioned is because it fails (1) (i.e. forget to stub this request in the MockRestServiceServer
)
(2) will not be verified automatically . You have to call MockRestServiceServer.verify()
manually in order to verify it.
An example :
QUESTION
We have application with huge configuration (this is just a part):
...ANSWER
Answered 2021-Dec-16 at 06:50Option : 1
You can Use the Lens : https://k8slens.dev/kubernetes.html
It's UI for monitoring and Managing K8s clusters. Using this you can also edit the configmap.
Option : 2
You can manage all the Key value into single YAML file and create configmap from file :
QUESTION
Spring is using the default validator factory provided by hibernate factory. However, I do not want to include an Expression Language dependency.
This answer recommends avoiding using the default factory by using this code:
...ANSWER
Answered 2021-Dec-02 at 00:13Try looking at Configuring a Bean Validation Provider for some discussion of the Validation Provider mechanism, and, for example, Spring-driven Method Validation, to then inject that as a default method-validation bean.
QUESTION
I have a URI, http://my-host.1domain:1234/path
, that throws a URISyntaxException
using one URI constructor:
ANSWER
Answered 2021-Nov-26 at 11:59In your example 1domain
is a TLD (top level domain). If to look at this spec it states:
A TLD label MUST be at least two characters long and MAY be as long as 63 characters - not counting any leading or trailing periods (.). It MUST consist of only ASCII characters from the groups "letters" (A-Z), "digits" (0-9) and "hyphen" (-), and it MUST start with an ASCII "letter", and it MUST NOT end with a "hyphen". Upper and lower case MAY be mixed at random, since DNS lookups are case-insensitive.
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