javadevjournal | Source code for the tutorials published on the Javadevjournal site | Object-Relational Mapping library
kandi X-RAY | javadevjournal Summary
kandi X-RAY | javadevjournal Summary
Source code for the tutorials published on the Javadevjournal site.
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Top functions reviewed by kandi - BETA
- Fixes the tree .
- Deletes the node at the given position .
- Resolves the cache .
- Gets the metadata for a file .
- On login success .
- Login .
- Read the data from a file .
- Attempts to split this class .
- Initializes the products .
- Reads the file and returns the stream tokenizer .
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javadevjournal Examples and Code Snippets
Lines of Code : 18
License : No License
Copypublic static void insert(MySinglyLinkedList list, int data)
{
Node node = new Node(data);
node.next = null;
// If the LinkedList is empty, then make the new node as head.
if (list.head == null) {
lis @PostMapping("/upload-file")
public String uploadFile(@RequestParam("file") MultipartFile file, RedirectAttributes redirectAttributes, Model model){
try {
FileMetaData data = fileStorageService.store(file);
data private static void readWithBuilder(final String fileLocation) throws IOException {
StringBuilder sb = new StringBuilder();
// create the path
Path path = Paths.get(fileLocation);
try(Stream stream = Files.lines(path Community Discussions
Trending Discussions on javadevjournal
QUESTION
Based on my testing, I've found no obvious difference when Spring Boot auto-configuration classes have or don't have the @Configuration annotation - if they are configured in spring.factories correctly they are loaded regardless of the @Configuration annotation.
However, it seems like every custom auto-configuration example and demo uses the @Configuration annotation. Is there a reason all these examples use @Configuration (or is it just convention)? Is there any impact to not using @Configuration?
Some examples that use @Configuration on auto-configuration classes:
- https://docs.spring.io/spring-boot/docs/current/reference/html/features.html#features.developing-auto-configuration.condition-annotations.class-conditions
- https://www.baeldung.com/spring-boot-custom-auto-configuration#creating-a-custom-auto-configuration
- https://www.baeldung.com/spring-boot-custom-starter#1-auto-configuration-classes
- https://www.javadevjournal.com/spring-boot/spring-boot-custom-starter/
- https://billykorando.com/2019/12/30/building-a-custom-spring-boot-starter/
- http://www.masterspringboot.com/getting-started-with-spring-boot/spring-boot-quickstarts/how-to-build-a-custom-spring-boot-starter-in-no-time/
- https://github.com/snicoll/spring-boot-master-auto-configuration/blob/main/hornetq-spring-boot-autoconfigure/src/main/java/hornetq/autoconfigure/HornetQAutoConfiguration.java
ANSWER
Answered 2022-Mar-10 at 06:54Yes, they should be. The documentation states that an auto-configuration class should be annotated with @Configuration:
Under the hood, auto-configuration is implemented with standard
@Configurationclasses. Additional@Conditionalannotations are used to constrain when the auto-configuration should apply. Usually, auto-configuration classes use@ConditionalOnClassand@ConditionalOnMissingBeanannotations.
If you do not annotate them with @Configuration you are relying upon Spring Framework’s “lite” @Bean mode. This changes the behaviour of the auto-configuration classes. It is not guaranteed to work in the future as the implementation does not meet the documented requirements.
QUESTION
Can someone please help me? I'm trying to follow this post(https://www.javadevjournal.com/spring-boot/spring-custom-validation-message-source/), to make custom validation messages. I was confused in part 5, which is defining the properties of the file. Do I have to create a file exactly with this nomenclature "messages_ {locale} .properties"? Or do I put the messages inside aplication.properties?
...ANSWER
Answered 2020-Oct-14 at 18:19Firstly, you have to configure messages source. Following the tutorial you have to implement bean like this:
QUESTION
I have implemented authentication for my APIs and it works as expected . The user first access the auth api to get a token by passing username and password. This api returns a token. The user then calls the secure apis by passing the tokens. This issue is when the user passes an invalid token or does not pass a token the default error object is returned from Spring Boot. I wanna customize this object and for this, I wrote a custom exception handler extending ResponseEntityExceptionHandler but this is not getting triggered as the exception is thrown before the controller kicks in.
...ANSWER
Answered 2020-Jun-16 at 17:01Since you are customising AbstractAuthenticationProcessingFilter , you can also customise its AuthenticationFailureHandler which will be invoked when attemptAuthentication() throw AuthenticationException. You can then handle the error at there.
An example is :
QUESTION
I want to implement pagination in a spring boot application which gives link to next page and previous page in the response if applicable along with the current page contents. I have checked this https://github.com/javadevjournal/javadevjournal/tree/master/spring/rest-pagination but hateos mvc dependencies are no longer supported with spring boot 2.2.6. Could you please help me out here.
...ANSWER
Answered 2020-Jun-10 at 13:55You can achieve the same using AOP and implementing ResponseBodyAdvice.
ResponseBodyAdvice allows the customization of the response object before Spring MVC writes it to the response body.
AOP will help you to achieve this in generic way so that it will apply to all applicable controller methods.
AOP code
This code will set the page in the PageStoreClass class.
Create the PageStoreClass containing Page as attribute/field
QUESTION
ANSWER
Answered 2020-Jan-28 at 19:14If you want fix this locally, please right click on browser tab and choose "reload".
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