Styjun

Intellij and Eclipse do not resolve dependencies for plugins (maven-clean-plugin, maven-install-plugin, ...) and for Kafka (org.apache.kafka:kafka-clients).

I have tried a lot of solutions:

1. 
   

   try to install it locally using this command:

   
   
   

   mvn install:install-file -Dfile=D:kafka_jarkafka-clients.jar 
   -DgroupId=org.apache-kafka -DartifactId=kafka-clients -Dversion=2.1.1 -Dpackaging=jar
   

   
   

but I got other errors shown:

2. Because I am working in a company, I had to use a proxy to let Maven access internet. in Intellij, I think I configured the proxy but I am not sure that Maven is using it to download (but marketplace is working and I could download plugins). or do you think it is the firewall who stop Maven?




3. I modified settings.xml multiple times adding proxy settings, and maven central but I get the same problem, this is settings.xml:

<?xml version="1.0" encoding="UTF-8"?>
 <settings>
 <activeProfiles>
 <!--make the profile active all the time -->
 <activeProfile>securecentral</activeProfile>
 </activeProfiles>
 <profiles>
 <profile>
 <id>securecentral</id>
 <!--Override the repository (and pluginRepository) "central" from the
 Maven Super POM -->
 <repositories>
 <repository>
 <id>central</id>
 <url>https://repo.maven.apache.org/maven2</url>
 <releases>
 <enabled>true</enabled>
 </releases>
 </repository>
 </repositories>
 <pluginRepositories>
 <pluginRepository>
 <id>central</id>
 <url>https://repo.maven.apache.org/maven2</url>
 <releases>
 <enabled>true</enabled>
 </releases>
 </pluginRepository>
 </pluginRepositories>
 </profile>
 </profiles>
 <proxies>
 <!-- Proxy for HTTP -->
 <proxy>
 <id>optional</id>
 <active>true</active>
 <protocol>http</protocol>
 <username>myUsername</username>
 <password>myPassword</password>
 <host>host</host>
 <port>80</port>
 <nonProxyHosts>nonProxyHosts</nonProxyHosts>
 </proxy>

 <!-- Proxy for HTTPS -->
 <proxy>
 <id>optional</id>
 <active>true</active>
 <protocol>https</protocol>
 <username>myUsername</username>
 <password>myPassword</password>
 <host>host</host>
 <port>80</port>
 <nonProxyHosts></nonProxyHosts>
 </proxy>
 </proxies>


 </settings>

4. I tried also to change between Maven 2 and Maven 3. when I use Maven 2, the dependencies about plugins disappear but not Kafka.

Most likely, you have proxy/firewall issues. You may have misconfigured the proxy in your POM or your proxy/firewall may block your requests.

Speak with your admin (the one responsible for proxy/firewall) if the proxy allows such requests and if not, how to remedy the situation.

Locate your maven settings.xml file - typically this is under .m2 folder in your home directory (C:UsersXYZ in Windows or /home/xyz in Mac/Linux).

Add below entry

<proxies>
<!-- proxy
 | Specification for one proxy, to be used in connecting to the network.
 |
 -->
<proxy>
 <id>optional</id>
 <active>true</active>
 <protocol>http</protocol>
 <!-- <username>proxyuser</username>
 <password>proxypass</password> These may not be required -->
 <host>yourProxyHost</host>
 <port>yourProxyPort</port>
 <nonProxyHosts>*.company.com|127.0.0.1|localhost</nonProxyHosts>
</proxy>

Make sure a mvn clean install works from a command prompt, and then check your IDE.