I searched for similar topics. There are plenty of situations with this kind of problem but none was exactly mine, and none provided help. I am completly stuck at the moment, so I would really appreciate your help. Here's the situation:
I am trying to build a very simple app and, for now, just trying to connect everything together. My config files are the following:
pom.xml (containing a profile to facilitate the deployment):
<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>org.example</groupId>
<artifactId>hello</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>8.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.23</version>
</dependency>
<dependency>
<groupId>fish.payara.extras</groupId>
<artifactId>payara-embedded-all</artifactId>
<version>5.182</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>hello</finalName>
</build>
<profiles>
<profile>
<id>payara</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<build>
<plugins>
<plugin>
<groupId>fish.payara.maven.plugins</groupId>
<artifactId>payara-micro-maven-plugin</artifactId>
<version>1.0.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>bundle</goal>
</goals>
</execution>
</executions>
<configuration>
<useUberJar>true</useUberJar>
<deployWar>true</deployWar>
<payaraVersion>5.182</payaraVersion>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<failOnMissingWebXml>false</failOnMissingWebXml>
</properties>
</project>
my web.xml (under webapp/WEB-INF):
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<data-source>
<name>java:global/hello</name>
<class-name>com.mysql.jdbc.Driver</class-name>
<url>jdbc:mysql://localhost:3306/connectiondatabase</url>
<user>root</user>
<password>mypass</password>
</data-source>
</web-app>
This database is running ok, and it was perfectly accessed from a general db client (dbeaver).
And finally, my persistence.xml (under resources/META-INF):
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd" version="2.1">
<persistence-unit name="hello" transaction-type="JTA">
<jta-data-source>java:global/hello</jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="javax.persistence.schema-generation.database.action" value="drop-and-create"/>
</properties>
</persistence-unit>
</persistence>
I have a simple ping resource and JAXRS config class that came as default with the archtype I used to create the project (airhacks) and just one more simple entity, as follows:
package com.airhacks.entities;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQuery;
import javax.persistence.Table;
#Entity
#Table(name = "players")
#NamedQuery(name = Player.FIND_PLAYER_BY_NAME, query = "select player from Player player where player.name =:" + Player.PLAYER_PARAMETER)
public class Player {
public static final String PLAYER_PARAMETER = "Player.name";
public static final String FIND_PLAYER_BY_NAME = "Player.findByName";
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String name;
private Integer age;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}
At this point, I can deploy the app with no errors (mvn clean package payara-micro:start), although when checking the database, no table is created (I thought persistence-unit would take care of that with both 'exclude-unlisted-classes' and 'drop-and-create', but apparently, something else is needed).
After that, for testing purposes, I am adding a queryService class, so I can actually use my datasource.
I am adding the following class:
package com.airhacks.services;
import com.airhacks.entities.Player;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.NoResultException;
import javax.persistence.NonUniqueResultException;
import javax.persistence.PersistenceContext;
#Stateless
public class QueryService {
#PersistenceContext(unitName = "hello")
EntityManager entityManager;
public Player getPlayerByName(String name) {
try {
return entityManager.createNamedQuery(Player.FIND_PLAYER_BY_NAME, Player.class)
.setParameter(Player.PLAYER_PARAMETER, name)
.getSingleResult();
} catch (NoResultException | NonUniqueResultException e) {
return null;
}
}
}
As far as I understand, there's no need to detail anything else on the PersistenceContext annotation, as we only have one persistence unit (although I also added unitName="hello", with the same result). But once I try to deploy the app, I get the following errors:
[2021-02-13T13:50:07.023+0000] [] [SEVERE] [NCLS-CORE-00026]
[javax.enterprise.system.core] [tid: _ThreadID=1 _ThreadName=main]
[timeMillis: 1613224207023] [levelValue: 1000] [[ Exception during
lifecycle processing javax.persistence.PersistenceException: Exception
[EclipseLink-4002] (Eclipse Persistence Services - 2.7.1.qualifier):
org.eclipse.persistence.exceptions.DatabaseException Internal
Exception: java.sql.SQLException: Error in allocating a connection.
Cause: The driver could not be loaded: com.mysql.jdbc.Driver Error
Code: 0
...
2.7.1.qualifier): org.eclipse.persistence.exceptions.DatabaseException Internal
Exception: java.sql.SQLException: Error in allocating a connection.
Cause: The driver could not be loaded: com.mysql.jdbc.Driver Error
Code: 0
at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:316) ...
... 41 more Caused by: java.sql.SQLException: Error in allocating a connection. Cause: The driver could not be loaded:
com.mysql.jdbc.Driver
... com.sun.appserv.connectors.internal.api.PoolingException:
So, basically, stating that the driver could not be loaded.
And this is where I can't do much. My external libs contain indeed mysql, so I don't understand where this problems comes from. I already tried with different db (SQLite, for example), but I get the very same problem, with different drivers, of course.
Would really appreciate your help and sorry for the long post.
Thank you!
This version of Mysql uses another driver class, change you web.xml from:
<class-name>com.mysql.jdbc.Driver</class-name>
to:
<class-name>com.mysql.cj.jdbc.MysqlConnectionPoolDataSource</class-name>
Reference: https://docs.payara.fish/community/docs/5.2020.5/documentation/payara-server/jdbc/mysql-connectorj-8-changes.html
Related
I should probably mention that Spring is my first framework that I am learning for Java.
What I am trying to do is to get the JDBC working for me using the Spring Data JDBC dependency I downloaded from spring.io. (2.6.4) I followed a tutorial on YouTube where the guy demonstrated it with something similar to the following code. (Should also mention the code he used was for Spring version 2.2 but I'm not sure where else to find right code for 2.6.4)
There is also an UnsatisfiedDependencyException I keep getting where it says:
Error creating bean with name 'applicationRunner' defined in com.example.demo.DemoApplication: Unsatisfied dependency expressed through method 'applicationRunner' parameter 0;
I do not know why this is happening. But here is the actual code:
package com.example.demo;
import org.springframework.boot.ApplicationRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
#SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
#Bean
ApplicationRunner applicationRunner(StudentRepo studentRepo) {
return args -> {
var s1 = Student.createStudent("John", "Doe");
var s2 = Student.createStudent("Jane", "Doe");
System.out.println(studentRepo.save(s1));
System.out.println(studentRepo.save(s2));
System.out.println(studentRepo.findByFName("John"));
};
}
}
CRUD Repository interface:
import org.springframework.data.jdbc.repository.query.Query;
import org.springframework.data.repository.CrudRepository;
import org.springframework.data.repository.query.Param;
import java.util.List;
public interface StudentRepo extends CrudRepository<Student, String> {
#Query("SELECT * FROM Students WHERE name = :name")
List<Student> findByFName(#Param("name") String fName);
}
schema.sql file:
CREATE TABLE Students (
id VARCHAR(50) IDENTITY PRIMARY KEY,
firstName VARCHAR(50),
lastName VARCHAR(50),
rank VARCHAR(50)
);
I think it's also important for me to include pom.xml file: (Though it should also be mentioned that the pom.xml file didn't originally include the hsqldb dependency. I added that in myself.
<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>2.6.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<scope>runtime</scope>
</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>
Edit:
Exception after including #Repository in the CRUD repository interface:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'applicationRunner' defined in com.example.demo.DemoApplication: Unsatisfied dependency expressed through method 'applicationRunner' parameter 0
Exception after replacing #Repository with #NoRepositoryBean:
2022-03-23 18:30:06.531 INFO 98567 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-03-23 18:30:06.556 ERROR 98567 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
APPLICATION FAILED TO START
Description:
Parameter 0 of method applicationRunner in com.example.demo.DemoApplication required a bean of type 'com.example.demo.StudentRepo' that could not be found.
Action:
Consider defining a bean of type 'com.example.demo.StudentRepo' in your configuration.
Process finished with exit code 1
try modifying the bean:
#Bean
public CommandLineRunner demo(StudentRepo studentRepo) {
return (args) -> {
studentRepo.save(new Student("Jack", "Bauer"));
studentRepo.save(new Student("Chloe", "O'Brian"));
}
you can consult the guide https://spring.io/guides/gs/accessing-data-jpa/
The problem lies in the schema.sql script. An IDENTITY column in HSQLDB has to be of the type INTEGER or BIGINT (see documentation at http://www.hsqldb.org/doc/1.8/guide/ch09.html, section CREATE TABLE). All other errors are just subsequent errors.
I have been checking all of my code for hours now and i just can't seem to find tthe error in here
it keeps throwing org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'imageRepository': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Not a managed type: class entitiys.Image
my controller looks like this:
package imageSearcher;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class AppController {
public static void main(String[] args) {
SpringApplication.run(AppController.class, args);
}
}
this is what the Image entity looks like:
package entitiys;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
#Entity(name = "image")
public class Image {
#Id
#Column(name = "id")
public Integer id;
#Column(name= "imageURL")
public String imageURL;
}
The image mapping looks as following
package imageSearcher;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import entitiys.Image;
#CrossOrigin(origins = "*", allowedHeaders = "*")
#RestController
public class ImageController {
#Autowired
private ImageRepository imageRep;
#GetMapping(path="/all")
public Iterable<Image> index() {
return imageRep.findAll();
}
#GetMapping(path = "/all/URL")
public Iterable<String> AllURL() {
return imageRep.findAllURL();
}
}
the imahe CrudRepository looks like this:
package imageSearcher;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
import entitiys.Image;
#Repository
public interface ImageRepository extends CrudRepository<Image, Integer>{
#Query(value = "select * from Image", nativeQuery = true)
Iterable<Image> findAll();
#Query(value = "select Image.imageURL from Image", nativeQuery = true)
Iterable<String> findAllURL();
}
this is the 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>2.3.3.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>spring-boot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot</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-data-jpa</artifactId>
</dependency>
<!-- Use MySQL Connector-J -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
and this is the application.properties:
server.port=91
spring.datasource.url=jdbc:mysql://localhost:3306/gip2021
spring.datasource.username=root
spring.datasource.password=
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.hibernate.naming_startegy=org.hibernate.cfg.EJB3NamingStrategy
spring.jpa.hibernate.ddl-auto=none
I have no clue of what is wrong here i hope someone can help me because this is for my final project and even my Teacher can't see the issue
also here is the database script for if you need it:
create table Image(
id integer unsigned auto_increment primary key,
imageURL varchar(255)
);
insert into image (imageURL) values
("test"),
("test2");
for anyone wanting the git repo:
https://github.com/michiel2003/GIP2021.git
Just moved everything to the same package and it worked my teacher told me to put the entitiys in a different package and that's not what you are supposed to do
The from spring boot documentation for #SpringBootApplication :
Many Spring Boot developers always have their main class annotated
with #Configuration, #EnableAutoConfiguration and #ComponentScan.
Since these annotations are so frequently used together (especially if
you follow the best practices above), Spring Boot provides a
convenient #SpringBootApplication alternative.
The #SpringBootApplication annotation is equivalent to using
#Configuration, #EnableAutoConfiguration and #ComponentScan with their
default attributes: [...]
and #ComponentScan:
If specific packages are not defined, scanning will occur from the
package of the class that declares this annotation.
So only imageSearcher package is being scanned. You need to rearrange you packages or change #SpringBootApplication annotation to
#SpringBootApplication(scanBasePackages = {"imageSearcher","entitiys"})
EDIT:
If your teacher told you to move it to different package maybe he wanted you to make workaround for just like I proposed
created the pull request: https://github.com/michiel2003/GIP2021/pull/1 that will fix the bug, you can simply merge it :)
agreeing with every points that have already been mentioned above regarding #ComponentScan and adding additional things that caught my eyes:
this bug can be easily reproduced by adding a dummy loadContext test, this test will be generated when you start bootstrapping a spring boot application by using spring initializr, which is always the best way to start spring booting
I know test experience has always been treated as an overhead for junior developers, but it is worth it if you want to go down the road to a senior :)
when looking into your git histories: please do not simply delete getter and setters just because they look like template code, if you feel comfortable you can try adding lombok
I am learning Spring Java Framework, but have the problem with the favicon. I want to get ordinary favicon in the simplest way. I placed the favicon.ico file like this src/main/resources/static/favicon.ico, also tried in just resources folder.
When I did a deployment to a remote GlassFish 5.1 web server the error happened:
[2020-07-18T02:45:52.695+0200] [glassfish 5.1] [WARNING] [] [org.springframework.web.servlet.PageNotFound] [tid: _ThreadID=696 _ThreadName=http-listener-2(1)] [timeMillis: 1595033152695] [levelValue: 900] [[ No mapping for GET /favicon.ico]]
And no favicon was present on a website.
At the remote the favicon can be found at this location:
./glassfish5/glassfish/domains/domain1/applications/HelloSpring-1.0-SNAPSHOT/WEB-INF/classes/static/favicon.ico
Here you are my files
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>ga.rekano</groupId>
<artifactId>HelloSpring</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.7.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
Config.java
package app;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
#Configuration
#ComponentScan("app")
public class Config extends AbstractAnnotationConfigDispatcherServletInitializer {
protected Class<?>[] getRootConfigClasses() {
return new Class[0];
}
protected Class<?>[] getServletConfigClasses() {
return new Class[]{Config.class};
}
protected String[] getServletMappings() {
return new String[]{"/"};
}
}
Hello.java
package app;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
#RestController
public class Hello {
#GetMapping("/sayHello")
public String sayHello() {
return "Hello Spring";
}
}
How to get favicon visible?
edit
My question is related to the configuration without files web.xml and mvc-dispatcher-servlet.xml so the answers for questions where these files exist don't solve my problem. I have the very simple application that works and I believe that it is not necessary to add special xml files just to add the favicon. But of course I am a newbie so can be wrong. But on the other hand it is very strange because there are some tutorials where the problem looks like very simple: https://www.baeldung.com/spring-boot-favicon
So the question could be why this simplest method doesn't work in my case?
I upgrade my Spring boot version from 2.0.5.RELEASE to 2.1.8.RELEASE (so Spring Integration from 5.0 to 5.1) and the automatic type casting inside integration flow doesn't work anymore. I am used to define a set of #IntegrationConverter components and automatic casting with the operation transform(Type.class, p -> p) inside integration flow code but with the new version it seems to be broken.
<?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>2.1.8.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>org.grorg</groupId>
<artifactId>grointegration</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>grointegration</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-integration</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-ip</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>
And the Main.java file:
package org.grorg.grointegration;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.core.convert.converter.Converter;
import org.springframework.integration.config.IntegrationConverter;
import org.springframework.integration.dsl.IntegrationFlow;
import org.springframework.integration.dsl.IntegrationFlows;
import org.springframework.integration.dsl.Transformers;
import org.springframework.integration.ip.dsl.Tcp;
import org.springframework.stereotype.Component;
class Test {
#Override
public String toString() {
return "test";
}
}
#Component
#IntegrationConverter
class Convert implements Converter<String, Test> {
#Override
public Test convert(String s) {
return new Test();
}
}
#SpringBootApplication
public class Main {
public static void main(String[] args) {
SpringApplication.run(GrointegrationApplication.class, args);
}
#Bean
public IntegrationFlow server() {
return IntegrationFlows
.from(Tcp.inboundGateway(Tcp.netServer(1234)))
.transform(Transformers.objectToString())
.transform(Test.class, id -> id) // in 2.1 I could use .convert(Test.class) but the problem is the same
.log()
.handle((p, h) -> "OK")
.get();
}
}
Use with a shell:
telnet localhost 1234
> test
> OK
[...]
With the previous version (2.0.5.RELEASE) the program work nicely like previously, but with the new version (2.1.8.RELEASE) I get this error (and no "OK" response):
org.springframework.integration.handler.ReplyRequiredException: No reply produced by handler 'server.org.springframework.integration.config.ConsumerEndpointFactoryBean#1', and its 'requiresReply' property is set to true.
[...]
What I have found is that the ConversionService has been remplaced by MessageConverter and now Jackson is used to transform message from one type to another.
Am I wrongly using type casting with integration flow? Do you have a new solution for casting object with the new version? Or is this just a regression?
Thanks in advance!
This is a bug in Spring Integration.
We just don't use a proper ConversionService in the GenericMessageConverter.
Please, raise a GH issue on the matter.
Meanwhile a workaround for you is like this:
#Bean(name = IntegrationContextUtils.ARGUMENT_RESOLVER_MESSAGE_CONVERTER_BEAN_NAME)
public static ConfigurableCompositeMessageConverter configurableCompositeMessageConverter(
#Qualifier(IntegrationUtils.INTEGRATION_CONVERSION_SERVICE_BEAN_NAME) ConversionService conversionService) {
return new ConfigurableCompositeMessageConverter(
Collections.singleton(new GenericMessageConverter(conversionService)));
}
So, we override whatever is configured by the framework and inject a proper IntegrationUtils.INTEGRATION_CONVERSION_SERVICE_BEAN_NAME bean which is supplied with your #IntegrationConverter component.
I am trying to initialize my database with a view and a rule following 75.3 Initialize a database using Spring JDBC.
75.3 Initialize a database using Spring JDBC
Spring JDBC has a DataSource initializer feature. Spring Boot enables it by default and loads SQL from the standard locations schema.sql and data.sql (in the root of the classpath). In addition Spring Boot will load the schema-${platform}.sql and data-${platform}.sql files (if present), where platform is the value of spring.datasource.platform, e.g. you might choose to set it to the vendor name of the database (hsqldb, h2, oracle, mysql, postgresql etc.). Spring Boot enables the fail-fast feature of the Spring JDBC initializer by default, so if the scripts cause exceptions the application will fail to start. The script locations can be changed by setting spring.datasource.schema and spring.datasource.data, and neither location will be processed if spring.datasource.initialize=false.
This section says that if I put a schema-postgresql.sql it should initialize my database with the script that the file contains.
Unfortunately the script ends with the following error
Caused by: org.postgresql.util.PSQLException: syntax error at end of input SQL state
Position: 169
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2310) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2023) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:217) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:421) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:318) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:310) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.springframework.jdbc.datasource.init.ScriptUtils.executeSqlScript(ScriptUtils.java:473) ~[spring-jdbc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
... 64 common frames omitted
However if I run this script from pgAdminIII there are no errors and the view with the corresponding rule are created without any problem.
What am I doing wrong here?
This is the structure of my Spring Boot example to reproduce it.
src/main/java/com/example/model/Person.java
package com.example.model;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
#Entity
public class Person implements Serializable {
private static final long serialVersionUID = 1334414548362400146L;
#Id
private long id;
#Column(nullable = false, length = 100)
private String name = "";
#Column(nullable = false, length = 100)
private String surname = "";
}
src/main/java/com/example/model/PersonRole.java
package com.example.model;
import java.io.Serializable;
import javax.persistence.EmbeddedId;
import javax.persistence.Entity;
#Entity
public class PersonRole implements Serializable {
private static final long serialVersionUID = -3953147119216643027L;
#EmbeddedId
private PersonRoleKey primaryKey;
}
src/main/java/com/example/model/PersonRoleKey.java
package com.example.model;
import java.io.Serializable;
import javax.persistence.Embeddable;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.ForeignKey;
import javax.persistence.ManyToOne;
import javax.persistence.PrimaryKeyJoinColumn;
#Embeddable
public class PersonRoleKey implements Serializable {
private static final long serialVersionUID = 2105526364632711640L;
#ManyToOne(optional = false)
#PrimaryKeyJoinColumn(foreignKey = #ForeignKey(name = "person_fk"))
private Person person;
#Enumerated(EnumType.STRING)
private Role role;
}
src/main/java/com/example/model/Role.java
package com.example.model;
public enum Role {
ADMIN, USER;
}
src/main/java/com/example/DemoApplication.java
package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
src/main/resources/application.properties
#Database configuration
spring.datasource.url: jdbc:postgresql://localhost:5432/postgres
spring.datasource.driverClassName: org.postgresql.Driver
spring.datasource.username: postgres
spring.datasource.password: postgres
spring.datasource.platform: postgresql
spring.datasource.continue-on-error: false
spring.jpa.properties.hibernate.dialect: org.hibernate.dialect.PostgreSQLDialect
spring.jpa.properties.hibernate.format_sql: true
spring.jpa.generate-ddl: true
spring.jpa.hibernate.ddl-auto: update
#default means org.hibernate.boot.model.naming.ImplicitNamingStrategyJpaCompliantImpl
spring.jpa.properties.hibernate.implicit_naming_strategy: default
spring.jpa.hibernate.naming.physical-strategy: org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
#spring.jpa.properties.hibernate.implicit_naming_strategy=org.hibernate.boot.model.naming.ImplicitNamingStrategyLegacyHbmImpl
spring.jpa.properties.hibernate.auto_quote_keyword: true
spring.jpa.show-sql: false
src/main/resources/schema-postgresql.sql
CREATE OR REPLACE VIEW v_peoples_roles AS
SELECT p.id,
p.name,
p.surname,
pr.role
FROM (person p
JOIN personrole pr ON ((p.id = pr.person_id)));
CREATE OR REPLACE RULE insert_v_peoples_roles AS
ON INSERT TO v_peoples_roles DO INSTEAD ( INSERT INTO person (id, name, surname)
VALUES (new.id, new.name, new.surname);
INSERT INTO personrole (person_id, role)
VALUES (new.id, new.role);
);
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.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<hibernate.version>5.2.2.Final</hibernate.version>
<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-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</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>
The whole code could be downloaded from here.
EDIT
Based on the poz's comment I changed the schema-postgresql.sql to
CREATE OR REPLACE VIEW v_peoples_roles AS
SELECT p.id,
p.name,
p.surname,
pr.role
FROM (person p
JOIN personrole pr ON ((p.id = pr.person_id)));
CREATE OR REPLACE FUNCTION insert_into_v_people_roles() RETURNS TRIGGER AS $$
BEGIN
INSERT INTO person (id, name, surname) VALUES (new.id, new.name, new.surname);
INSERT INTO personrole (person_id, role) VALUES (new.id, new.role);
RETURN new;
END;
$$ LANGUAGE plpgsql;
DROP TRIGGER IF EXISTS insert_v_peoples_roles ON v_peoples_roles;
CREATE TRIGGER insert_v_peoples_roles INSTEAD OF INSERT ON v_peoples_roles FOR EACH ROW EXECUTE PROCEDURE insert_into_v_people_roles();
But it produces another error, exactly like predicted.
ERROR: unterminated quoted string at or near "$$ BEGIN INSERT INTO person (id, name, surname) VALUES (new.id, new.name, new.surname)"
Because pozs has not posted his own answer and some time has passed I am doing it by myself.
Changing the CREATE RULE to an INSTEAD OF triggered and $$-quoting to '-quoting solved the problem. The only issue was that I had to escape all the apostrophes inside function definitions. Was not that big of a pain though.