I found only adding properties scanBasePackages on #SpringBootApplication can not enable feature of JPA on #Enity and JpaRepository. I have to add #EnableJpaRepositories and #EntityScan and basePackages properties on them. Is there any simpler solution on this? Thank you
Just go to the Spring Initializr site, specify your 'Group' and 'Artifact' (or live default ones), in the 'Dependencies' block choose "JPA" and "H2" (or another DB you need - see 'Switch to the full version' link), then click 'Generate Project'.
In the downloaded archive you can find the Spring Boot skeleton project with JPA support.
If you look into project pom.xml file you can see these dependencies:
<dependencies>
<!-- JPA -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- H2 DB -->
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<!-- Other suff -->
</dependencies>
You will have to add those annotations to tell Spring container you want to enable the jpa features.
You will also have to add the following depenencies in your pom.xml to enable spring-data-jpa.
<!-- JPA -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
Check out this GitHub project.
Related
Which is the best way to determine the versions for my Spring modules and other libraries in a Spring Boot project?
Versions for Spring Modules
Versions for Third Party libraries
There are a lot of question when you search for "Compatible versions in Spring".
But all these questions are regarding specific libraries.
I would like to have general rules of how to determine compatible versions for my project.
You may checkout my post on this A comprehensive list of dependencies managed by latest Spring-Boot 2.3.2.RELEASE (as a custom parent)
That's is just a reference for how it should be, but you may discard the version in as they will be managed indirectly by spring itself.
Ok so, this is something almost every spring developer stumble upon. Let me try to explain this how was I able to resolve all the managed and third party libraries.
Let's suppose you want to build spring-boot microservices with a centralized configuration server.
So we can take it as following modules:
A company project starter: acts as a parent, managing the dependency
A config-server
A config-client
and let's suppose you chose spring-boot 2.3.2 version, which I used and find more stable. You would expect all the managed ones are using this spring-boot 2.3.2 version directly or indirectly.
I would highly recommend using https://mvnrepository.com
artifact: my_company-boot-starter-parent
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.2.RELEASE</version>
</parent>
<groupId>com.my_company</groupId>
<artifactId>my_company-boot-starter-parent</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<name>my_company starter-parent</name>
<dependencyManagement>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- ... -->
<!-- ... -->
<!-- other dependencies -->
<!-- ... -->
<!-- ... -->
</dependencyManagement>
If you got to Spring Boot Starter Parent ยป 2.3.2.RELEASE, under Managed Dependencies you can see the comprehensive list of all the dependencies with default version that would be referenced implicitly with boot version 2.3.2, see column Version.
The Updates column indicate that these managed dependencies are having their newest updates as this, but you are not required to override the dependency version of managed ones. If you intent to use more recent version, you have to chose more recent version of spring-boot-starter-parent. So let the spring download all the managed one itself.
With spring-boot-starter-parent 2.3.2 , they do not mention which spring-cloud-dependencies verion you should use, and this is where we get stuck and we need to figure it out.
Let us got to spring-cloud-dependencies . Hee you can see numerous version but which one to chose, it's like verifying which latest version uses spring-boot 2.3.2 indirectly.
You need to follow the managed dependency and go along with it until you find your parent version.
For example If you go for :
Hoxton.SR6
Spring Cloud Dependencies(Hoxton.SR6) -> Spring Cloud Config Dependencies( 2.2.3.RELEASE) -> Spring Cloud Starter Config(2.2.3.RELEASE) -> Spring Cloud Starter(2.2.3.RELEASE) -> Spring Boot Starter(2.3.0.RELEASE)
Here you can see, we end up using Spring Boot Starter(2.3.0.RELEASE) which is not what we expected it to be.
Hoxton.SR7
Spring Cloud Dependencies(Hoxton.SR7) -> Spring Cloud Config Dependencies(2.2.4.RELEASE) -> Spring Cloud Starter Config(2.2.4.RELEASE) -> Spring Cloud Starter(2.2.4.RELEASE) -> Spring Boot Starter(2.3.2.RELEASE)
Here we end up using same boot version 2.3.2. So in your parent pom.xml, you can set the spring cloud version as :
<properties>
<java.version>15</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<lombok.version>1.18.20</lombok.version>
<spring-cloud.version>Hoxton.SR7</spring-cloud.version>
</properties>
And in child poms (jars), you can just use the dependencies justby mentioning the group and artifact, skipping the version.
sample:
<parent>
<groupId>com.my_company</groupId>
<artifactId>my_company-boot-starter-parent</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</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.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<dependency>
<groupId>com.google.googlejavaformat</groupId>
<artifactId>google-java-format</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
</dependency>
</dependencies>
See, we have not provided the any version here, so spring-cloud-config-server version would be auto managed and it would be 2.2.4.RELEASE which again uses spring-boot-starter-web and spring-boot-starter both of 2.3.2 version.
Third party libraries
This is somewhat based on language version. You might want to use the latest third-party libs which is most recent till your language version supports it.
Like lombok: 1.18.20
Hope this might have helped you and others and provides an approach towards version compatibility.
Tips: Never forget to check the Managed Dependency Coordinates in Aappendix of all the spring boot release page as they keep their managed dependencies & version there. Like this one Appendix F: Dependency versions
1. Use Spring Initializr
Select all Spring modules you need in spring initializr and generate your code: https://start.spring.io/
You do not need to use the full generated code. But you should copy the library versions out of the generated pom.xml.
2. Watch out for dependency pom.xml
If available, import dependency pom.xml in your dependencyManagement.
Use the versions provided by these dependency poms.
E.g.
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
Spring Dependency Version Documentation
You can also check the Spring Dependency Version Documentation. But I prefer the initilizr, because it's easier to handle.
I was working on a project and then add eureka client dependency in my project but it showing following error.
Cannot resolve org.springframework.cloud:spring-cloud-starter-netflix-eureka-client:unknown
Spring version is: 2.3.1
Maven:
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
But when a create a new project from initializer with eureka client dependency its working fine.
now i am at a lost what to do .
My guess is that what's going on here is that for your existing project, you have not included anything in your pom.xml stream that defines the version of the spring-cloud-starter-netflix-eureka-client package you want to use. Notice the unknown at the end of the error message. But when you create a new project with Initializr, you are getting a pom.xml setup that does define a version number for this package.
There is likely some other dependency, possibly spring-cloud-starter-parent or spring-cloud-dependencies, that you need to add to your pom.xml to define version numbers for all the Spring Cloud packages.
I found out that
following setting in pom.xml solves the error
<properties>
<java.version>11</java.version>
<spring-cloud.version>Hoxton.SR8</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
Follow the steps:
If you have installed spring boot in your eclipse or you have STS IDE then click on your existing project.
Select spring and then edit starter.
Now spring initializer window will open and here you have to select dependencies as per your need.
Select spring and then edit starter screen
spring initializer window
I am migrating existing Spring project into Spring boot.unable to run spring boot application its showing following error.
The error log says there is a conflict on tomcat-embed-core.
In eclipse Dependency hierarchy of porm.xml is given below
i exclude the maven architect ,and try to run the application its showing following error
porm.xml
<modelVersion>4.0.0</modelVersion>
<artifactId>MyService</artifactId>
<packaging>jar</packaging>
<properties>
<java.version>1.8</java.version>
<!-- 2.1.3.RELEASE -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<springframework.boot.version>2.1.7.RELEASE</springframework.boot.version>
</properties>
<name>MyService</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.sybase.jdbc3.jdbc</groupId>
<artifactId>jconn3</artifactId>
<version>${jconn3.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-juli</artifactId>
<version>${tomcat.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jdbc</artifactId>
<version>${tomcat.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
what was wrong in this porm.xml
Where is
${tomcat.version}
defined?
That version probably does not match the tomcat version that auto magically is included with spring boot items.
And thus the conflict.
Go here:
https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web/2.1.7.RELEASE
And start following the COMPILE dependencies, and you'll find the versions that are auto included with 2.1.7.RELEASE. and you have to alter the other includes that are overwriting the springboot auto include tomcat versions.
Again, follow the COMPILED dependency trail.
So below is what you should find by crawling the COMPILED dependency trail (from immediately above in my answer)
https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-tomcat/2.1.7.RELEASE
And you'll find you need to set
tomcat.version to
9.0.22
By defining tomcat.version as 8.x, you are breaking it.
Another way to put it
You have to go ~way~ back to springboot 1.5.2.RELEASE or 1.5.3.RELEASE
https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-tomcat/1.5.2.RELEASE
https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-tomcat/1.5.3.RELEASE
(Again, in the two above links, looked at the COMPILE dependencies)
To find a version of tomcat (that is auto included with springboot) that gets close to tomcat 8.5.x (where 8.5.x is the one you are attempting to use)
That's pretty old.
The principal you are missing is that springboot auto includes dependencies. And anything else you import has to play nice with everything springboot auto includes.
And your current value for tomcat.version is NOT playing nice with everything springboot 2.1.7.RELEASE is auto including.
And now that you've been through all of that. You'll find you'll make your life easier if you engage the springboot world more completely.
Alot of times, springboot will have a (sub)package that will bring in the thing you really desire.
spring-boot-starter-jdbc
https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-jdbc/2.1.7.RELEASE
You would probably be better off bringing that package in, vs hand-picking ones. Aka, get rid of your "tomcat-jdbc" include and see if the spring-boot-starter-jdbc can give you what you want.
The curse/blessing of spring-boot is that it is its own universe. But if you engage, you probably want to play by its rules more often than not.
PS
It is pom.xml, not porm.xml
Try adding spring-boot-starter-tomcat as a dependency:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
Remove tomcat-juli and tomcat-jdbc dependencies. If you need JDBC support, add the corresponding starter:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
If you use JSP views, you will probably need the following dependencies as well:
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
Also, pay attention to your dependencies versions. Spring Boot's parent POM defines version management for many common artifacts so you don't need to set the <version></version> for these libraries. See https://docs.spring.io/spring-boot/docs/2.1.7.RELEASE/reference/htmlsingle/#appendix-dependency-versions
Written simple POC to prove and test Spring Boot and log4j2 compatibility. Once successful I will move it to real application.
Please refer my POC source code:
https://github.com/Dennyss/SpringBootLog4j2POC
I know/read about Spring version and log4j2 compatibility from:
How to set up Spring Boot and log4j2 properly?
Found and tried recommendations described here:
Spring-Boot logging with log4j2?
But still not working. The problem is that both application logs and Spring logs are printing to console only.
Please refer maven dependencies below (from POC):
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.6.2</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.6.2</version>
</dependency>
</dependencies>
If I don't exclude Spring's logback and don't add boot-starter-log4j2 then application logs are printing to application file but Spring logs are not printing at all. I feel the problem somewhere with dependencies. Appreciate any help.
According to the Spring Boot Logging documentation, the location of the logging configuration file can be specified using the logging.config property. I noticed that your start.sh script is passing -Dlog4j.configurationFile. Normally, this would be sufficient for direct Log4J 2 integration, but Spring Boot uses logging.config.
After switching to this, it writes to the log files:
java -Dlogging.config=/share/LogPOC/log4j2.xml -cp poc.jar:libs/* com.poc.logger.Application
Adding the spring boot dependencies in pom.xml and running spring boot app causes following errors -
> xception in thread "main" java.lang.IllegalAccessError: tried to
> access method
> org.springframework.core.io.support.SpringFactoriesLoader.loadFactoryNames(Ljava/lang/Class;Ljava/lang/ClassLoader;)Ljava/util/List;
> from class org.springframework.boot.SpringApplication at
> org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:392)
> at
> org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:384)
> at
> org.springframework.boot.SpringApplication.initialize(SpringApplication.java:260)
> at
> org.springframework.boot.SpringApplication.<init>(SpringApplication.java:236)
> at
> org.springframework.boot.SpringApplication.run(SpringApplication.java:1185)
> at
> org.springframework.boot.SpringApplication.run(SpringApplication.java:1174)
> at com.catalina.platform.batch.Application.main(Application.java:12)
See below the snap shot of my pom.xml
<dependencyManagement>
<dependencies>
<dependency>
<!-- Import dependency management from Spring Boot -->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>1.3.6.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-ftp</artifactId>
<version>${spring.ftp.version}</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
Usually IllegalAccessError problems are due to an incorrect version of Spring being pulled in by Maven. Spring Boot 1.3.6 needs Spring Framework 4.2.7.
The spring-boot-dependencies dependencyManagement import is normally enough to ensure the correct version is used and the limited section of the POM that you've posted looks correct.
I would suggest running mvn dependency:tree to check that the correct version is being pulled in. Also check that you're on the latest Maven release.
Failing that, a project that reproduces the issue would help a lot with tracking down the cause.
I too had the same problem when i created a Spring Simple Web Maven Project and added few other dependencies in my pom.xml to write a web service for spring boot application
Updating my dependencies so that the version mismatch is handled and then doing Run As-->Maven clean , Run As --> Maven Install followed by Maven--Update Project worked in my case