Spring-boot-start jar load error in maven project on Netbeans - java

I donwloaded a new spring boot application (version 2.0.0) from https://start.spring.io/ and I tried to build it using netbeans IDE.
During the maven build I got the following error :
The build could not read 1 project -> [Help 1]
The project com.deepit.springboot.example:spring-boot-in-deep:0.0.1-SNAPSHOT (~=NetBeansProjects\spring-boot-in-deep\pom.xml) has 1 error
Non-resolvable parent POM: Could not transfer artifact org.springframework.boot:spring-boot-starter-parent:pom:2.0.0.BUILD-SNAPSHOT from/to spring-snapshots (https://repo.spring.io/snapshot): repo.spring.io and 'parent.relativePath' points at no local POM # line 14, column 10: Unknown host repo.spring.io -> [Help 2]
To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.
Do you have an idea about the cause of this error ?


http://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0
<groupId>com.deepit.springboot.example</groupId>
<artifactId>spring-boot-in-deep</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>spring-boot-in-deep</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.BUILD-SNAPSHOT</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-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>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>


To resolve this I add a proxy in the settings.xml file in the config folder of maven.
To know the location of your settings file, start maven with -X option (debug) and examine the beginning of the output.


#Ayadi Akrem
Can you post the contents of your POM?
Update: POM looks ok. I would guess a connection error (even though you said you tested it).

Related

Problem with Maven in POM Don't copy file

I have a problem with my ear in Maven, I find this error, but i don't find answer, please help
Error to compile in Maven Goals Clean Install
Failed to execute goal org.apache.maven.plugins:maven-ear-plugin:2.7:ear (default-ear) on project DashboardOSM-ear: Cannot copy a directory: C:\Users\Coneja\Desktop\OSM_DashboardBackend\OSM_DashboardBackend\commonModule\target\classes; Did you package/install DashboardOSMEar:commonModule:jar:1.0-SNAPSHOT:compile? -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-ear-plugin:2.7:ear (default-ear) on project DashboardOSM-ear: Cannot copy a directory: C:\Users\Coneja\Desktop\OSM_DashboardBackend\OSM_DashboardBackend\commonModule\target\classes; Did you package/install DashboardOSMEar:commonModule:jar:1.0-SNAPSHOT:compile?
And the pom file is:
<?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>
<parent>
<groupId>DashboardOSMEar</groupId>
<artifactId>DashboardOSM</artifactId>
<version>1.0-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<groupId>DashboardOSMEar</groupId>
<artifactId>DashboardOSM-ear</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>ear</packaging>
<name>DashboardOSMEar</name>
<url>http://maven.apache.org</url>
<pluginRepositories>
<pluginRepository>
<id>central</id>
<name>Central Repository</name>
<url>https://repo.maven.apache.org/maven2</url>
<layout>default</layout>
<snapshots>
<enabled>false</enabled>
</snapshots>
<releases>
<updatePolicy>never</updatePolicy>
</releases>
</pluginRepository>
</pluginRepositories>
<repositories>
<repository>
<id>central</id>
<name>Central Repository</name>
<url>https://repo.maven.apache.org/maven2</url>
<layout>default</layout>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-ear-plugin</artifactId>
<version>2.7</version>
<configuration>
<version>5</version>
<defaultLibBundleDir>lib</defaultLibBundleDir>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-clean-plugin</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>DashboardOSMWar</artifactId>
<version>${project.version}</version>
<type>war</type>
</dependency>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>commonModule</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>configurationModule</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>queryModule</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>

Could not transfer artifact Transfer failed

I am getting below error for maven projects in intellij.
Could not transfer artifact org.apache.maven.plugins:maven-site-plugin:pom:3.3 from/to other-mirror (http://insecure.repo1.maven.org/maven2/): Transfer failed for http://insecure.repo1.maven.org/maven2/org/apache/maven/plugins/maven-site-plugin/3.3/maven-site-plugin-3.3.pom ProxyInfo{host='123.45.6.
This 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>test</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.3</version>
<type>maven-plugin</type>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-install-plugin</artifactId>
<version>2.4</version>
<type>maven-plugin</type>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.7</version>
<type>maven-plugin</type>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.kafka/kafka-clients -->
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>2.3.0</version>
</dependency>
</dependencies>
<pluginRepositories>
<pluginRepository>
<id>central</id>
<name>Central Repository</name>
<url>https://repo.maven.apache.org/maven2</url>
<layout>default</layout>
<snapshots>
<enabled>false</enabled>
</snapshots>
<releases>
<updatePolicy>never</updatePolicy>
</releases>
</pluginRepository>
</pluginRepositories>
<repositories>
<repository>
<id>central</id>
<name>Central Repository</name>
<url>https://repo.maven.apache.org/maven2</url>
<layout>default</layout>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>
'''
This is my settings.xml
'''
<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
<mirrors>
<mirror>
<id>internal-repository</id>
<name>Maven Repository Manager running on https://repo1.maven.org/maven2</name>
<url>https://repo1.maven.org/maven2</url>
<mirrorOf>*</mirrorOf>
</mirror>
</mirrors>
<repositories>
<repository>
<id>central</id>
<name>Central Repository</name>
<url>https://repo.maven.apache.org/maven2</url> <!-- the https you've been looking for -->
<layout>default</layout>
<snapshots>
<enabled>false</enabled> <!-- or set to true if desired, default is false -->
</snapshots>
</repository>
</repositories>
<proxies/>
</settings>
'''
I tried to add proxy but no use. tried to add mirror as well but not working. Please let me know if you faced and fixed the same issue

Maven: how to configure to use an artifact present locally (~/.m2/repository) before trying online?

Having two maven projects locally, namely Authentication and Commons,
I need to use Commons as a dependency in the Authentication's pom.xml,
which is correctly deployed in the local repository at ~/.m2/repository after running mvn clean install in the Commons root directory.
However I'm not getting how to stop it trying to download this local dependency from online, when I run maven clean install in the Authentication root directory.
Here the error I get:
[ERROR] Failed to execute goal on project authentication: Could not resolve dependencies for project io.project:authentication:jar:0.0.1-SNAPSHOT: Failure to find io.project.commons:project-commons:jar:0.0.1.RELEASE in https://repo.spring.io/snapshot was cached in the local repository, resolution will not be reattempted until the update interval of spring-snapshots has elapsed or updates are forced
This is the pom of Authentication:
http://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0
<groupId>io.project</groupId>
<artifactId>authentication</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>authentication</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.BUILD-SNAPSHOT</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>
<spring-cloud.version>Finchley.BUILD-SNAPSHOT</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.project.commons</groupId>
<artifactId>project-commons</artifactId>
<version>0.0.1.RELEASE</version>
</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>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
While this is the pom of Commons:
http://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0
<groupId>io.project</groupId>
<artifactId>project-commons</artifactId>
<version>0.0.1.RELEASE</version>
<packaging>jar</packaging>
<name>commons</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>
<spring-cloud.version>Finchley.BUILD-SNAPSHOT</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</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>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
Isn't it possible to config the pom to first look at the local repository, then to go search it online?

Look at your coordinates. In authentication, you depend on io.project.commons:project-commons:
<dependency>
<groupId>io.project.commons</groupId>
<artifactId>project-commons</artifactId>
<version>0.0.1.RELEASE</version>
</dependency>
But the actual coordinates on the commons project are io.project:project-commons:
<groupId>io.project</groupId>
<artifactId>project-commons</artifactId>

Unable to perform maven update for spring boot project in STS

I have created a spring boot application and imported it into the STS. but when i tried to perform "Maven Update", it shows the following error in pom.xml file as well as didnt get updated. Any help would be appreciated. Thanks!
The error is as follows:-
**
Project build error: Non-resolvable parent POM for
com.example:demo:0.0.1-SNAPSHOT: Failure to transfer
org.springframework.boot:spring-boot-starter-parent:pom:2.0.3.RELEASE
from https://repo.maven.apache.org/maven2 was cached in the local
repository, resolution will not be reattempted until the update
interval of central has elapsed or updates are forced. Original error:
Could not transfer artifact
org.springframework.boot:spring-boot-starter-parent:pom:2.0.3.RELEASE
from/to central (https://repo.maven.apache.org/maven2):
java.lang.RuntimeException: Unexpected error:
java.security.InvalidAlgorithmParameterException: the trustAnchors
parameter must be non-empty and 'parent.relativePath' points at no
local POM
**
This is my 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>DigitalEmployeeDB</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>DigitalEmployeeDB</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.BUILD-SNAPSHOT</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-data-jpa</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>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/com.itextpdf/kernel for Pdf Generation-->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.0.6</version>
</dependency>
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>kernel</artifactId>
<version>7.0.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi for Excel Generation -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.5-beta5</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.10-FINAL</version>
</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>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>

Faced the same issue on my office laptop. They say, its due to some blockage by the firewall. Some network config should be done to get rid of this issue.

I reinstall default-jdk on Ubuntu. And i solved it.
Please refer to following link.
Maven: trustAnchors parameter must be non-empty and 'parent.relativePath' # InvalidAlgorithmParameterException # Non-resolvable parent POM

create setting.xml at location "${user.home}/.m2/settings.xml"
Then add your office maven central repository as shown below
<settings>
...
<profiles>
...
<profile>
<id>myprofile</id>
<repositories>
<repository>
<id>my-repo2</id>
<name>your custom repo</name>
<url>http://jarsm2.dyndns.dk</url>
</repository>
</repositories>
</profile>
...
</profiles>
<activeProfiles>
<activeProfile>myprofile</activeProfile>
</activeProfiles>
...
</settings>

Unable to open a newly created Maven project in eclipse

I created a new maven project using the following maven command
mvn archetype:generate -DgroupId=com.company.lib_name -DartifactId=lib_name -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
When I open this newly created project in eclipse it gives the following error:
Could not calculate build plan: Plugin org.apache.maven.plugins:maven-jar- plugin:2.3.2 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-jar-plugin:jar:2.3.2
Plugin org.apache.maven.plugins:maven-jar-plugin:2.3.2 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-jar-plugin:jar:2.3.2: Hostname cannot be null
I tried th following:
Deleted the .m2/repository and rebuilt the project
Verified that the artifact exists in the maven repo
Maven user settings point to the correct settings.xml
Project compiles on the command line
Cleaned the project
Forced updates n the project
Checked repo to see all the dependencies are downloaded
Change eclipse to use the external maven instead of embeded
Also I am using Kepler and Maven 3.
Any idea what 'hostname cannot be null' is pointing at?
THis is the pom content
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.company.lib</groupId>
<artifactId>liby</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>lib</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>1.7.0</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.0</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.14</version>
</dependency>
</dependencies>
</project>
And the settings.xml
<settings>
<profiles>
<profile>
<id>Blah</id>
<repositories>
<repository>
<id>inhouse</id>
<url>http://mavenrepo/maven2_repositories/inhouse</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>inhouse_snapshot</id>
<url>http://mavenrepo/maven2_repositories/inhouse_snapshot</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>inhouse</id>
<url>http://mavenrepo/maven2_repositories/inhouse</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>inhouse_snapshot</id>
<url>http://mavenrepo/maven2_repositories/inhouse_snapshot</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
</profiles>
<activeProfiles>
<activeProfile>company_name</activeProfile>
</activeProfiles>
<mirrors>
<mirror>
<id>central-to-nexus</id>
<mirrorOf>*</mirrorOf>
<url>http://mw_maven_repository_readonly/nexus/content/groups/cached</url>
</mirror>
</mirrors>

It seems that you have created the project from Maven Template but you did not make this project as an Eclipse project before import it in Eclipse.
So after create a new maven project using the maven command you should also execute the below command to make the project as an Eclipse project
mvn eclipse:eclipse
It will generate all project files that are required by Eclipse IDE.
I also prefer to execute "mvn clean install" before import the project in Eclipse.

At command prompt :
mvn eclipse:eclipse
mvn clean install
This should download all dependencies

Thank you all for the answers. but the problem was with the maven repo url.

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