I am having a difficult time attaching Spring 5.3.x source code in eclipse.
I tried multiple ways one of them was to add a source to Java build path. However, I am not able to find the spring 5.3.x source code itself.
I have searched the official spring site - https://spring.io/blog/2018/10/30/spring-boot-2-1-0
on git too https://github.com/spring-projects
none of them has source code.
Another was to Right-click on the project -> maven -> Download Sources. It started updating the project however I still don't see the source code.
Can anyone help me solve this?
Your current java runtime in eclipse seems to be jdk8.
Go to Eclipse -> Preferences -> Java -> Installed JREs and switch to JDK11.
Then delete the project and reimport it again.
There might be some other issues in your project, after you switch to JDK11, but in this case I would need more information, including your pom.xml.
Also, check your project outside the eclipse, with command-line: "mvn clean install". Make sure that it compiles successfully, before importing it to eclipse. Make sure your JAVA_HOME points to JDK11
Here is the example of pom.xml for JDK11 Spring Boot 2.4.2 project. Compare it with your own 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>skyglass</groupId>
<artifactId>notepad</artifactId>
<version>1.1.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>notepad</name>
<description>Notepad demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.2</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
.....
If nothing else helps, try to clean your local maven repository.
Deleting folder m2/repository/org/springframework should be enough
Related
I have upgraded the spring boot version from 2.3.5 to 2.7.5 , resolved most of the dependency versions. But when i do the maven clean install , i received the compilation failure error : cannot access LoggingEventAware
[ERROR] class file for org.slf4j.spi.LoggingEventAware not found
But i do not see any error in the java file - LoggingConfiguration.java.
When i just do reload of project to resolve all the dependencies - it gives error for maven plugin : Cannot resolve plugin org.apache.maven.plugins:maven-release-plugin:3.1.1
I am not sure what is the issue. I have tried to restart IntelliJ after invalidate cache and also cleared the .m2 repository .Nothing helps. Please suggest your inputs how to resolve the same.
Here is the sample pom.xml
<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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.5</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>11</java.version>
<maven-compiler-plugin.version>3.10.1</maven-compiler-plugin.version>
<maven-surefire-plugin.version>2.22.2</maven-surefire-plugin.version>
<maven-release-plugin.version>3.1.1</maven-release-plugin.version>
<maven-scm-provider-gitexe.version>1.9.5</maven-scm-provider-gitexe.version>
<junit.platform.version>4.13.0</junit.platform.version>
<logback-json-classic>0.1.5</logback-json-classic>
<logback-jackson.version>0.1.5</logback-jackson.version>
</properties>
</project> ```
While updating a project to Spring Boot 3.0.1, I came across the same issue.
Here is what worked for me:
Exclude logback-classic sub-dependency of spring-boot-starter-web.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
</exclusion>
</exclusions>
</dependency>
Add an earlier dependency of logback with version 1.2.11
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.11</version>
</dependency>
I started a course on spring boot and I am at dependency injection.
I ran into a problem with ApplicationContext which I can't seem to resolve:
Screenshot of the problem
I added the maven dependency as you can see in the pom file:
pom file screenshot
But it still doesn't recognize the ApplicationContext and I cannot find a solution anywhere.
EDIT: whole pom.xml file:
<?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>2.5.6</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>DependencyInjectionDemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>DependencyInjectionDemo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.3.12</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
You don't need to explicitly add spring-context dependency, since it is a transitive dependency of spring-boot-starter. Other than that it seems fine to me, but we can do three things:
Check that you are actually importing org.springframework.context.ApplicationContext and not some other class;
Force the reload of all your dependencies in IntelliJ (right click your project --> Maven --> Reload project);
Clear your .m2 folder (or at least org/springframework sub-path folder inside it). You might have some corrupted JARs in there.
From given screenshots I assume, you are using a Maven-project in IntelliJ.
Adding imports from classpath
Try to import the class org.springframework.context.ApplicationContext in the java class where your main method is (as shown in screenshot).
Usually IntelliJ should find the class ApplicationContext in your classpath. From your given POM and dependency spring-boot-starter the classpath should contain the class.
See:
ApplicationContext import in spring
Re-importing Maven dependencies
As João suggests try reimporting by context-action on your POM file (CTRL + SHIFT + O).
See:
Import Maven dependencies in IntelliJ IDEA
Maven dependencies | IntelliJ IDEA
Repair actions
In case nothing of the above work, either your IntelliJ project notconfigured correctly, or something got out of sync between IntelliJ and Maven. Then try following repair-actions (in order listed below):
Run mvn clean install -U (see --update-snapshots), either from IntelliJ's Maven tools or terminal, as explained in
Force re-download of release dependency using Maven
In IntelliJ's menu select Invalidate Caches / Restart... to reindex your project. This can help if IntelliJ and Maven got out of sync.
Delete your local Maven repository, usually the (hidden) folder .m2 in your user's home folder (see Clear the Maven Cache) and reload/reimport your POM in IntelliJ.
#### UPDATE v2 ####
Ok I found out the issue, it was in fact an IDEA bug. More precisely, it's the git extension, gitflowincrementalbuilder, which from 3.8+ breaks Idea. Changing version to 3.7 solves it, for now.
https://github.com/vackosar/gitflow-incremental-builder/issues/91
Intellij/git, please fix it
------ Old Update v1 -----
I just tried running the project with Eclipse... works perfectly without any issues whatsoever, at first try... So it's kind of a Intellij-IDEA bug/problem (...)
I am trying to run some examples from Github, the spring spring-boot ones from baeldung.com; more specifically this one (no one works in idea): https://github.com/eugenp/tutorials/tree/master/spring-mvc-simple-2
While it works using Maven commands, "mvn clean install"
and then "mvn spring-boot:run", wont work in Idea (it does clean and install ok, but no run). Project is imported using "New"->"Project from Existing Sources" (check images below for settings).
I think there is some problem with the pom imported configuration, especially since there is a multi module structure (parent tag); cannot even resolve #SpringBootApplication.
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<artifactId>spring-mvc-simple-2</artifactId>
<packaging>war</packaging>
<name>spring-mvc-simple-2</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-boot-2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-boot-2</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
</plugin>
</plugins>
<finalName>spring-mvc-simple2</finalName>
</build>
I have been trying to add a SpringBoot configuration manually using IDEA gui but it doesnt recognize the application class (?). What partially works though is replacing the parent pom with:
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
Tests still wont work, but I dont think u're supposed to change/edit the pom file manually to make things works...
I have been trying alot already: invalidate cache, maven reimport & Generate sources and update folders, using mvn first, checking all jdk configuration... nothing works.
You didn't build the parent module so IntelliJ does not find this in your local Maven repository.
You should run mvn install in the project:
https://github.com/eugenp/tutorials/blob/master/parent-boot-2/pom.xml
But also exchanging the parent helps like you described yourself.
To make the tests run you have to add the test dependency from the parent:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.rest-assured</groupId>
<artifactId>rest-assured</artifactId>
</dependency>
I'm pretty new at Spring framework, and I try to start a project for practice.
But I have an error and I have no idea how to fix this.
I've created a new Spring project in IntelliJ Idea, with Spring Initializr option (In Intellij, not with start.spring.io ). I added only 2 dependedncies for start (Web and Thymeleaf), but it throws error for Thymeleaf dependency if i run it with
'mvn spring-boot:run' command.
My spring project is "empty" , I have no controllers, beans, jpa entites, etc.. but it i think it shound run in this way too. I just wanted to make sure if it works if I run it.
If I create a same project, without Thymeleaf dependency (only Web dependency), it starts correctly on localhost.
I'm using Java 9.0.4 and Apache Maven 3.5.3
My error log
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_thymeleaf</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo_thymeleaf</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>9</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</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-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
I solved it with deleting the whole C\Users\user.m2 directory.
After then with 'mvn spring-boot:run' it started successfully on localhost.
But I've got one more question:
When I run it, at terminal there are a couple of Warning messages.
Spring application runs anyway, but is there something to do with these messages?
Warning messages during Spring application run.
I was following along with the Creating a Simple Hello World Backend API tutorial (GAE) and all was running fine via local terminal but as soon as I opened the project in IntelliJ, IntelliJ can't build the project...
The pom file has a bunch of errors about being unable to find any dependencies, however I can still build the application just fine outside of IntelliJ.
I'm not overly familiar with Maven but I believe it is configured correctly in the IDE as I can build other generic examples generated by IntelliJ. I've attempted to re-import all dependencies but no luck...
Is there something else I need to do here?
Snippet from the pom file where both dependencies are failing to find versions.
<?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>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<groupId>com.example.helloworld</groupId>
<artifactId>helloworld</artifactId>
<properties>
<app.id>your-app-id</app.id>
<app.version>1</app.version>
<appengine.version>${appengine.version}</appengine.version>
<gcloud.plugin.version>0.9.58.v20150505</gcloud.plugin.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.showDeprecation>true</maven.compiler.showDeprecation>
</properties>
<prerequisites>
<maven>3.1.0</maven>
</prerequisites>
<dependencies>
<!-- Compile/runtime dependencies -->
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>${appengine.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-endpoints</artifactId>
<version>${appengine.version}</version>
</dependency>
Your appengine.version property is recursively defined, so IntelliJ can't figure out what it is. Substitute <appengine.version>${appengine.version}</appengine.version> with <appengine.version>1.9.24</appengine.version> and you should be fine.