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SPRING QUESTIONS

haproxy + spring boot writeAddress(..) failed: Connection reset by peer
haproxy + spring boot writeAddress(..) failed: Connection reset by peer
I think the issue was by ths following , HAproxy is doing GET request, reads http response code and closing connection. Boot is trying to send remaining parts (http headers and some json payload) but connection is already closed.Just replace GET with
TAG : spring
Date : January 12 2021, 01:40 AM , By : Tetting
Is Spring Batch suitable to periodically delete records from DB
Is Spring Batch suitable to periodically delete records from DB
To fix this issue You could create a new Spring Bean using the @Component annotation or reuse a service bean. Then, implement a method to delete this records and use the @scheduled annotation to configure when this method has to be executed.Don't for
TAG : spring
Date : January 11 2021, 05:14 PM , By : Andrew L.
How do i insert data in the products table from the form i've created?
How do i insert data in the products table from the form i've created?
wish help you to fix your issue I figured it out need to implement Serializeable in the categories class
TAG : spring
Date : January 11 2021, 03:34 PM , By : THD
Is it possible to implement Swagger in a common library with Spring-boot?
Is it possible to implement Swagger in a common library with Spring-boot?
This might help you This is possible, you just need to create a bean in a common library with the boilerplate code, add the library as a dependency in your project, and then import that bean into a configuration class in your project.Swagger boilerpl
TAG : spring
Date : January 11 2021, 03:28 PM , By : Hugo
How to override spring Environment variables programmatically
How to override spring Environment variables programmatically
hope this fix your issue Yes. All the current implementation of Environment is also a ConfigurableEnvironment which allows you to get its internal MutablePropertySources. After getting MutablePropertySources, you can use it to configure any searching
TAG : spring
Date : January 11 2021, 11:39 AM , By : eastcoastj
Spring GCP - Datastore performance: Batch processing, iteration through all entity list is very slow
Spring GCP - Datastore performance: Batch processing, iteration through all entity list is very slow
I hope this helps you . Full discussion here: https://github.com/spring-cloud/spring-cloud-gcp/issues/1824First:
TAG : spring
Date : January 10 2021, 02:04 PM , By : Nougat
Apache CXF 2.2.7 Spring 3 Web Service Unmarshalling Error: unexpected element
Apache CXF 2.2.7 Spring 3 Web Service Unmarshalling Error: unexpected element
will help you I know this question is a year old with no accepted answer but I had exactly the same error today. Like the original question poster, I have a Java-First service with a method that returns an object. The problem for me was that I added
TAG : spring
Date : January 10 2021, 01:47 PM , By : Lauren Kirschner
org.springframework.batch.item.excel.poi.PoiItemReader cannot be resolved
org.springframework.batch.item.excel.poi.PoiItemReader cannot be resolved
I hope this helps . i have solved this issue by myself by adding the following dependency.
TAG : spring
Date : January 07 2021, 03:08 PM , By : DarrenBeck
How can i use Myfaces 2.3, Primefaces Elite 7.0.4 & Extensions and Omnifaces 3.3 together in a SpringBoot applicatio
How can i use Myfaces 2.3, Primefaces Elite 7.0.4 & Extensions and Omnifaces 3.3 together in a SpringBoot applicatio
it should still fix some issue JoinFaces is the way to go: http://joinfaces.org/You can use their starter app to configure Spring boot for PrimeFaces, OmniFaces, MyFaces etc. See: https://joinfaces-example.herokuapp.com/starter.jsf
TAG : spring
Date : January 02 2021, 06:48 AM , By : hlpimfalling
Content type 'application/x-www-form-urlencoded' not supported" for post method
Content type 'application/x-www-form-urlencoded' not supported" for post method
hope this fix your issue You have to add Content-type: application/json;charset=utf-8 header to your request. By default (if Content-type header is absent) content type of POST request body is application/x-www-form-urlencoded. In @RequestMapping by
TAG : spring
Date : January 02 2021, 06:48 AM , By : toma
How can I map the fields return in JSON with my entity provided the key in JSON has different name than fields in my ent
How can I map the fields return in JSON with my entity provided the key in JSON has different name than fields in my ent
it fixes the issue You can use the @JsonAlias() to give the variable more than one JSON key binding.
TAG : spring
Date : January 02 2021, 06:48 AM , By : iyogee
ConstraintValidator dependency injection leads to ValidationException when being validated at class level
ConstraintValidator dependency injection leads to ValidationException when being validated at class level
To fix the issue you can do The exception says that there is no default constructor because Hibernate Validator tries to instantiate your validator.You have to use Spring.
TAG : spring
Date : January 02 2021, 06:48 AM , By : Bado
Redis Cache memory Status
Redis Cache memory Status
around this issue Yes it is possible. I'm telling you how to do it using Redis-client: JedisAfter adding jedis dependency into your project you can define a bean like:
TAG : spring
Date : January 02 2021, 06:48 AM , By : Manik
Does Apache Camel replace or complement creating micro-services with Spring Boot?
Does Apache Camel replace or complement creating micro-services with Spring Boot?
To fix this issue Apache Camel has nothing to do with microservices.It's an implementation of the Enterprise Integration Patterns: https://www.enterpriseintegrationpatterns.com/
TAG : spring
Date : January 02 2021, 06:48 AM , By : Richard
Spring batch unit testing job with external input and db output
Spring batch unit testing job with external input and db output
around this issue Are you reading input files from disk? If so you can edit the input file source directory only for tests to be within the src/test/resources/input_dir/your_test_file.xml for example.If the input file directory is configured with pro
TAG : spring
Date : January 02 2021, 06:48 AM , By : DaveF
How does Spring Boot application with application.yml behave for when dependency also has an application.yml file
How does Spring Boot application with application.yml behave for when dependency also has an application.yml file
wish help you to fix your issue The two will get merged. Properties with the same name: the values in your application's application.yaml will override the values from the dependencies application.yaml. Properties which are not overwritten (defined i
TAG : spring
Date : January 02 2021, 06:48 AM , By : Alan Little
Correct guide about spring Oauth 2
Correct guide about spring Oauth 2
help you fix your problem Both guides are correct.The first guide you mentioned (https://docs.spring.io/spring-security/site/docs/current/reference/htmlsingle) uses the newer OAuth 2.0 functionality in the Spring Security project, so it's recommended
TAG : spring
Date : January 02 2021, 06:48 AM , By : liquidx
What are this Spring version names?
What are this Spring version names?
will help you The names Celsius, Darwin, Einstein etc are release names of the Spring Cloud Stream App Starters project. The documentation for the same can be found here. They are in alphabetical order, ie Einstein is the newer than Darwin (Similar t
TAG : spring
Date : January 02 2021, 06:48 AM , By : onurtopcu
spring webflux webclient response convert list of string to string
spring webflux webclient response convert list of string to string
it should still fix some issue The first issue is that the API you're using is not returning a single object, but an array of objects, indicated by the square brackets ([]).This means you should at least refactor your code to use bodyToFlux() in stea
TAG : spring
Date : January 02 2021, 06:48 AM , By : JSebok
how to get KafkaListener Consumer
how to get KafkaListener Consumer
hope this fix your issue If you want to seek the consumer in the listener itself, simply add a Consumer consumer parameter to the listener method.Bear in mind that the container may have fetched more messages so you will get them before the seek take
TAG : spring
Date : January 02 2021, 06:48 AM , By : vdavidovski
Spring boot log settings in application.yml
Spring boot log settings in application.yml
Hope this helps I'm building a spring boot application. I use logstash to create structured logs, and this works great. However, I'm trying to move the following logback.xml to application.yml. , Root level can be configured like this:
TAG : spring
Date : January 02 2021, 06:48 AM , By : user186435
CORS settings in Spring boot does not work
CORS settings in Spring boot does not work
hop of those help? I have Springboot (v 2.0) application. I enabled CORS in the application.properties as below.
TAG : spring
Date : January 02 2021, 06:48 AM , By : Michael T.
How to access application.yml properties in Spring 1.5.9
How to access application.yml properties in Spring 1.5.9
will help you For getting value from application.yml you should be using @Value from the package org.springframework.beans.factory.annotation.Value but you are using lombok's @Value
TAG : spring
Date : January 02 2021, 06:48 AM , By : evegter
Execute state actions synchronously
Execute state actions synchronously
this one helps. I would like to use a Synchronous task scheduler, but I don't think there's such a thing.
TAG : spring
Date : January 02 2021, 06:48 AM , By : Jarques
Spring boot 2: Fail to reach controller method
Spring boot 2: Fail to reach controller method
will help you Your ComponentScan is incorrect, please check the packages (these package names do not exists):
TAG : spring
Date : January 02 2021, 06:48 AM , By : ralph okochu
Does @Value support letting default value reference another @Value?
Does @Value support letting default value reference another @Value?
wish help you to fix your issue I think the best thing you can do is to define test.v2=${test.v1} in your application.properties file. This way, if you override the value for test.v2 through some other ways like environment variables, it will have th
TAG : spring
Date : January 02 2021, 06:48 AM , By : druta
How Rest Controller handle multiple request at same time for a single instance application?
How Rest Controller handle multiple request at same time for a single instance application?
this one helps. From the point of view of Spring (Application Context) rest controller is a singleton if not specified otherwise.So the code of controller must be ready to be invoked by multiple threads simultaneously.
TAG : spring
Date : January 02 2021, 06:48 AM , By : Chandra P Singh
Error : java.lang.ClassNotFoundException: org.hibernate.cfg.AnnotationConfiguration
Error : java.lang.ClassNotFoundException: org.hibernate.cfg.AnnotationConfiguration
should help you out You are using Spring Boot 2.1.3 which depends on Spring 5.1. The Spring 5.x line works only with Hibernate 5.x, support for earlier versions has been dropped. The spring-boot-starter-data-jpa dependency already includes the hibern
TAG : spring
Date : January 02 2021, 06:48 AM , By : Don Changer
Validation in spring boot rest controller
Validation in spring boot rest controller
will be helpful for those in need The most widely used validation api with spring boot is - javax-validation-api - https://mvnrepository.com/artifact/javax.validation/validation-api/2.0.1.Final
TAG : spring
Date : January 02 2021, 06:48 AM , By : Bjørn Lyngwa
@Service vs @Component in Spring
@Service vs @Component in Spring
seems to work fine We can directly use @Component for each and every bean, but for better understanding and maintainability of a large application, we use @Controller, @Service, @Repository.
TAG : spring
Date : January 02 2021, 06:48 AM , By : delphiace
Spring Data MongoDB + Spring Boot starting twice?
Spring Data MongoDB + Spring Boot starting twice?
With these it helps I encountered the same symptoms. It appeared that I had a Configuration class that implemented AbstractReactiveMongoConfiguration, which caused a MongoClient to be created twice. Leaving the client creation to the framework and co
TAG : spring
Date : January 02 2021, 06:48 AM , By : smbrant
How to connect JPARepository with ItemReader using spring batch?
How to connect JPARepository with ItemReader using spring batch?
I hope this helps . I need to connect with jpa repository from ItemReader using spring batch for Database to text file export. But as of now i tried using JdbcCursorItemReader class to retrieve the data from db. I need to connect with Repository usin
TAG : spring
Date : January 02 2021, 06:48 AM , By : ArmHead
JPA Native query puts parentheses wrong for List paremeter on INSERT INTO VALUES
JPA Native query puts parentheses wrong for List paremeter on INSERT INTO VALUES
wish helps you No, your idea is nice but will not work with Spring Data, because: list parameter expansion happens only as a comma-separated list of data values (a, b, ...), not a list of records or rows (a), (b), (...) data-modifying statements that
TAG : spring
Date : January 02 2021, 06:48 AM , By : Lauren Kirschner
spring boot https PKCS12 DerInputStream.getLength(): lengthTag=111, too big
spring boot https PKCS12 DerInputStream.getLength(): lengthTag=111, too big
hop of those help? I found the problem, there was a resource filter plugin in my pom.xml destroyed the key file. I had to exclude the key file from resource filter plugin.
TAG : spring
Date : January 02 2021, 06:48 AM , By : Vijayant Singh
Appropriate Oracle download for hibernate-dialect org.hibernate.dialect.Oracle9Dialect
Appropriate Oracle download for hibernate-dialect org.hibernate.dialect.Oracle9Dialect
will be helpful for those in need 9 is an older version of Oracle Database that is no longer supported, and it is no longer available for download from Oracle's Database Software Downloads page. The Oracle9Dialect was deprecated back in 2008, so I wi
TAG : spring
Date : January 02 2021, 06:48 AM , By : harley.holt
org.hibernate.hql.internal.ast.QuerySyntaxException: Employee is not mapped [from Employee];
org.hibernate.hql.internal.ast.QuerySyntaxException: Employee is not mapped [from Employee];
help you fix your problem This problem occurs only when the table name you have mentioned in the query is not matching with the entity. The table name used in the query is not the one in the real database, it should be the name of the entity class. I
TAG : spring
Date : January 02 2021, 06:48 AM , By : pdkent
Ignore an Empty Request Body?
Ignore an Empty Request Body?
Hope this helps I think you shouldn't think too much into this. Technically, ignoring the unexpected body doesn't violate any software development principles. Even though this might be something that makes you feel uncomfortable personally in the con
TAG : spring
Date : January 02 2021, 06:48 AM , By : jaset
spring-security-oauth2 vs spring-security-oauth2-core in Spring
spring-security-oauth2 vs spring-security-oauth2-core in Spring
will be helpful for those in need Yes there is a big difference. spring-security-oauth2 (Spring Security OAuth Project) is no longer being actively developed. Moving forward, it will be implemented in Spring Security 5 (in spring-security-oauth2-core
TAG : spring
Date : January 02 2021, 06:48 AM , By : Jenuel
Better way to handle exception is spring-boot
Better way to handle exception is spring-boot
this one helps. You can use @RestControllerAdvice. Make a custom exception class CustomRedisException throw CustomRedisException Exception from every controller and handle this in separate class annotated with @RestControllerAdvice.
TAG : spring
Date : January 02 2021, 06:48 AM , By : Patastroph
Spring boot + JMS + IBM MQ
Spring boot + JMS + IBM MQ
I wish this help you I'm trying to send a message to a IBM MQ queue from my spring boot service. Configuration is as follows: , Client programs connect to SVRCONN channels, not RECEIVERs.
TAG : spring
Date : January 02 2021, 06:48 AM , By : user176445
How does Reactive programming using WebFlux handles dependent external api calls
How does Reactive programming using WebFlux handles dependent external api calls
I think the issue was by ths following , In this scenario, reactive programming won't change the law of physics or logic: you'll still need the result of the previous step to produce the next one. So it's likely that executing that logic with a block
TAG : spring
Date : January 02 2021, 06:48 AM , By : beng
Spring Kafka replay old messages
Spring Kafka replay old messages
This might help you Yes, there is. Have a look at ConsumerSeekAware. The usage is described here. Namely, about this method:
TAG : spring
Date : January 02 2021, 06:48 AM , By : nabbed
Spring Security: Redirect to invalid-session-url instead of logout-success-url on successful logout
Spring Security: Redirect to invalid-session-url instead of logout-success-url on successful logout
Hope that helps By default, the logout process will first invalidate the session, hence triggering the session management to redirect to the invalid session page. By specifying invalidate-session="false" will fix this behavior.
TAG : spring
Date : January 02 2021, 06:48 AM , By : AnToni00
What happens on a JMS queue when onMessage() throws a JMSException?
What happens on a JMS queue when onMessage() throws a JMSException?
Hope that helps I'm using Spring 2.5 with my custom class that implements MessageListener. If a JmsException is thrown in my onMessage( ) method, what happens to the state of the queue? , From the JMS 1.1 spec...4.5.2 Asynchronous Delivery
TAG : spring
Date : January 02 2021, 06:48 AM , By : Ben Kohn
static factory method (Spring)
static factory method (Spring)
Hope this helps The advantages of using the static factory method for bean instantiation don't necessarily come from Spring which is just an IoC container. Some suggestions from Effective Java Idiom1, providing static factory provides the following a
TAG : spring
Date : January 02 2021, 06:48 AM , By : Feroz
What's mean that Caused by: javax.validation.ValidationException: Unable to find a default provider?
What's mean that Caused by: javax.validation.ValidationException: Unable to find a default provider?
around this issue Do you actually have a ValidationProvider on your class path? Try adding the reference implementation Hibernate Validator 4 to your class path.
TAG : spring
Date : January 02 2021, 06:48 AM , By : Dmitry
Autowire Annotation in Spring without using Component Scanning
Autowire Annotation in Spring without using Component Scanning
wish helps you Yes. is responsible for discovering beans annotated with @Component, @Controller, @Service, @Respository, etc. In order to have annotations processed (@Autowired, @Resource, etc) you need . Thus annotations are processed on beans that
TAG : spring
Date : January 02 2021, 06:48 AM , By : user90210
Injecting Mockito mocks into a Spring bean
Injecting Mockito mocks into a Spring bean
will help you I would like to inject a Mockito mock object into a Spring (3+) bean for the purposes of unit testing with JUnit. My bean dependencies are currently injected by using the @Autowired annotation on private member fields. , The best way is
TAG : spring
Date : January 02 2021, 06:48 AM , By : Ernie Thomason
Spring data mongodb search with date
Spring data mongodb search with date
will be helpful for those in need the generated query is in BSON format, which implies that the transformation of the date to it's ISO format is done by MongoDB and not by spring
TAG : spring
Date : January 02 2021, 06:48 AM , By : Nick Coats
Spring Security is not working with Authorization: Bearer token from OAuth2
Spring Security is not working with Authorization: Bearer token from OAuth2
Any of those help The root cause of this problem was @EnableResourceServer annotation on OAuth2 application. Why? Because actually OAuth2 server can not be Resource service and Authentification service at the same time. So we need to simplify logic o
TAG : spring
Date : January 02 2021, 05:34 AM , By : user113409
Recalcitrant StaleObjectStateException problem using Spring Retry
Recalcitrant StaleObjectStateException problem using Spring Retry
it fixes the issue Optimistic locking is a strategy which is enabled in JPA by the usage of @Version annotated field. It is a great strategy to use as it eliminates all the physical locking problems caused by the usage of pessimistic locking method.I
TAG : spring
Date : January 02 2021, 05:23 AM , By : MikeW
How can I get items from a List element for dropdown menu for Spring forms?
How can I get items from a List element for dropdown menu for Spring forms?
help you fix your problem it's a hard way to solve your question. instead of this you can create a model for form.
TAG : spring
Date : January 02 2021, 05:23 AM , By : user107021
InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a];
InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a];
this one helps. I am doing a data access layer tutorial and was creating a test for the classes and database. Turns out I get this error
TAG : spring
Date : January 01 2021, 05:04 PM , By : Ivan Kitanovski
how to "group by" messages based on a header value
how to "group by" messages based on a header value
hope this fix your issue due to the nature of this dsl, I have a dynamic number of files, so I couldn't count messages (files) ending with the same number, and I don't think timeout could be a good release Strategy, I just wrote the code on my own wi
TAG : spring
Date : January 01 2021, 06:46 AM , By : mlapida
Will Elasticseach reduce shards number by itself, if I reduce the shards paremeter in @Document annotation?
Will Elasticseach reduce shards number by itself, if I reduce the shards paremeter in @Document annotation?
hope this fix your issue Spring Data Elasticsearch uses this information when creating the index; it it not reapplied to change parameters like the numner of shards. So what you want to do is not possible with Spring Data Elasticsearch.If you can aff
TAG : spring
Date : January 01 2021, 06:31 AM , By : meodudang
How to automatically add all Converters to a FormatterRegistry in Spring?
How to automatically add all Converters to a FormatterRegistry in Spring?
wish helps you Since you have implemented the Converter interface and also annotated them with @Component, you can get them all by injecting them as a collection. @Autowired List converters;
TAG : spring
Date : December 31 2020, 08:18 AM , By : mediafarm
Spring Boot - Keycloak: "failed to turn code into token" SSL
Spring Boot - Keycloak: "failed to turn code into token" SSL
wish helps you This error is because the trustore used to validate the TLS connection in your jvm doesn't trust the certificate you use for the keycloak server. Thus the request to turn the code into a token is never completed.You need to add the CA
TAG : spring
Date : December 28 2020, 01:32 PM , By : MikeW
Why my spring application don't start in a wildfly container?
Why my spring application don't start in a wildfly container?
wish of those help I found the error. Removing this dependency the application works fine
TAG : spring
Date : December 28 2020, 06:11 AM , By : Bas
Get the value of multiple map (Map inside of map) from postman
Get the value of multiple map (Map inside of map) from postman
it helps some times How can get the value of multiple key values (Map inside of map) from the postman , I have found the answer e.g:DTO:
TAG : spring
Date : December 28 2020, 05:45 AM , By : tanminivan
How to update postgres uri value in cf vcaps env
How to update postgres uri value in cf vcaps env
help you fix your problem I have a bound Postgres service to my spring application in CF (Cloud foundry) The VCAPS env available are as following: , You have a few options.
TAG : spring
Date : December 27 2020, 04:51 PM , By : dantino

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