Spring boot project setup error in eclipse - java

I have created a project a project using https://start.spring.io/, when i import that project into my eclipse it is giving error as
Project build error: Non-resolvable parent POM for
com.spring:micro-finance:0.0.1-SNAPSHOT: Could not transfer artifact
org.springframework.boot:spring-boot-starter-parent:pom:2.2.6.RELEASE from/to
uk.maven.org (https://repo1.maven.org/maven2): Failed to authenticate with proxy and 'parent.relativePath' points at no local POM pom.xml /project-name line
5 Maven pom Loading Problem
Here is my 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>2.2.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.spring</groupId>
<artifactId>Demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Demo</name>
<description>Demo project in 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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
I have added the porxy details in apache-maven-3.6.0\conf\settings.xml
I have an another project which is perfectly running in the eclipse and its spring boot version is 2.1.2.RELEASE, when i change the above project to the version 2.1.2.RELEASE the error is getting resolved.

Related

Eclipse IDE error - Ready State Poller has encontered a problem

I'm getting this error with every project with actuator dependency "Ready State Poller has encontered a problem: An internal error occurred during: "Ready state poller".
ATTR_PROCESS_ID"
Ready State Poller has encontered a problem: An internal error occurred during: "Ready state poller".
ATTR_PROCESS_ID
No stacktrace, project starts normally, just the eclipse IDE error message. How can I prevent this to happen?
My pom 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>2.7.5</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>demo.bootcamp</groupId>
<artifactId>pruebasClientes</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>pruebasClientes</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>2020.0.4</spring-cloud.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</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-registry-prometheus</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
This is a demo project for a bootcamp class, it has only 3 or 4 classes, I think my problem is in the config or in the pom.
Thanks.

You can examine this issue, Same problem appears.
https://github.com/spring-attic/spring-ide/issues/182

Spring Data Cassandra - build fails when dependency is added

I was following this guide https://www.baeldung.com/spring-data-cassandra-tutorial to try and get started with using Cassandra paired with spring boot, however, the Cassandra connector dependency:
<!-- https://mvnrepository.com/artifact/com.datastax.oss/java-driver-core -->
<dependency>
<groupId>com.datastax.oss</groupId>
<artifactId>java-driver-core</artifactId>
<version>4.14.0</version>
</dependency>
Doesn't seem to contain the necessary modules for adding an AbstractCassandraConfiguration. When adding spring-boot-starter-data-cassandra as a dependancy it gives me the required modules to add Cassandra configurations, but my build fails with the error:
java: error reading `C:\Users\X\.m2\repository\com\google\code\findbugs\jsr305\3.0.2\jsr305-3.0.2.jar; zip END header not found`
Here is my 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>2.6.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.morpheus</groupId>
<artifactId>reportdbgateway</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>reportdbgateway</name>
<description>Charlie&apos;s software engineering assignment cassandra db gateway</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-cassandra</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>
</project>

My first approach would be going to:
C:\Users\X.m2\repository\com\google\code\findbugs\jsr305\3.0.2
and delete:
jsr305-3.0.2.jar
and then run a maven clean install or your goal
Sometimes the jars are downloaded corrupted

How do I create an executable jar for my webapp with Maven?

Backgound
I develop a webapp using a REST Interface with Spring. Normally I develop and execute my software with Eclipse. When my program has been started I enter localhost:8080/RESTPath in Chrome to access RESTPath with my program.
Issue
Now I want to build and execute my program with Maven instead with a executeble jar. The issue is that my knowledge with Maven is limited so I'm not sure how to do. Of course I have googled my issue and I have tested some examples but without succes. So far I think I should use the plugin tomcat7-maven-plugin in my POM.xml to generate a jar to execute with java -jar file.jar. I have followed the example with a webapp using tomcat7-maven-plugin but the jar file is never generated: https://www.baeldung.com/executable-jar-with-maven.
My POM:
<?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>2.6.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<!-- My project -->
<groupId>tobbe</groupId>
<artifactId>stocks-rest</artifactId>
<packaging>jar</packaging>
<version>1.0.2-SNAPSHOT</version>
<properties>
<java.version>17</java.version>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</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-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<!-- My projects -->
<dependency>
<groupId>tobbe</groupId>
<artifactId>Stocks_Backend</artifactId>
<version>1.0.2-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>tobbe</groupId>
<artifactId>Other</artifactId>
<version>1.0.2-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
Question
how should my POM look like a how should I build with Maven (i.e. mvn clean compile) to create an executable jar?

<?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>2.6.2</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</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>
You are missing build section in your pom. When you execute mvn clean package you will get the JAR File in the target folder

Problem creating Spring framework project in IntelliJ

I am trying to create a Spring project using Spring initializer in IntelliJ ultimate edition according to the official guide of Jetbrains.
All steps go fine including installing the dependencies of the project.
But whenever I try to run the app; the error below shows up stating that "package org.springframework.boot does not exist" which is already installed in my dependencies.
I've gone through every related post to this problem but no luck. I would appreciate if anyone can guide me through this to figure out what it is that's going wrong about this.
This is also my pom.xml content provided below:
<?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>2.3.4.RELEASE</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>15</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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

In the top right side you have got a refresh button to reinitialize the Pom.xml file again. Once maven repositories are all set it will allow you to start the project

Class shows up in auto complete but can't be imported -IntelliJ

The Services project uses a class in DataLayer. I have added the dependency to Services POM. When trying to import UserRepository class from DataLayer, IntelliJ autocomplete shows the class but when I press enter,it says "Can not resolve symbol DataLayer".
I checked the local maven repository and can see the Jar file in the proper place.
Tried invalidating cache which did not work.
Reimporting dependencies did not work either.
Here are the POM files of both the projects as well as screenshots from intelliJ
Services - 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.schoolgallery</groupId>
<artifactId>Services</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Services</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.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>1.8</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-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.schoolgallery</groupId>
<artifactId>DataLayer</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
DataLayer - 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.schoolgallery</groupId>
<artifactId>DataLayer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>DataLayer</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.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>1.8</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-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
Error appears as :
EDIT
The project has an MVC architecture with separate modules for API,Services and DataLayer.
Please find the project structures for services and datalayer.

Adding the parent POM dependency to the Child projects did the trick !!
<parent>
<artifactId>parent-pom</artifactId>
<groupId>com.schoolgallery</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
Remember to change the spring boot starter parent if you have a custom parent POM , because having two parent tags will throw an error.
This is described nicely here

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