[JAVA] What to do when a Missing artifact occurs in a jar that is not defined in pom.xml

--Environment - CentOS Linux release 7.6.1810 (Core) - Apache Maven 3.2.5 -(For Maven) Java1.8.0_242 (For project) Java1.6.0_41

Event: I got angry when I selected a project in Eclipse> [Maven]> [Update Project ...]

[Problems]Tab error

Missing artifact javax.resource:connector:jar:1.0
Missing artifact javax.transaction:jta:jar:1.0.1B

Even if you grep the pom.xml of the project, there is no such definition ...

$ grep -rn connector --include=pom.xml
$ grep -rn jta --include=pom.xml
$

Cause: pom.xml There is no jar that depends on the defined jar

trial and error

Open the project's pom.xml in Eclipse> Open the Dependency Hierarchy tab> Search for the jar name in Filter "I found it!" It was a jar that had a dependency on jotm ...

If you check jotm in pom.xml and search with Maven Repository: Search / Browse / Explore, it will be fine ...

pom.xml

...abridgement...
<dependency>
  <groupId>jotm</groupId>
  <artifactId>jotm</artifactId>
  <version>2.0.10</version>
  <scope>provided</scope>
  <exclusions>
...abridgement...

Check the pom of jotm

$ cat ~/.m2/repository/jotm/jotm/2.0.10/jotm-2.0.10.pom
...abridgement...
    <dependency>
      <groupId>javax.transaction</groupId>
      <artifactId>jta</artifactId>
      <version>1.0.1B</version>
    </dependency>
...abridgement...
    <dependency>
      <groupId>javax.resource</groupId>
      <artifactId>connector</artifactId>
      <version>1.0</version>
    </dependency>

Searching with Maven Repository: Search / Browse / Explore For a while, I thought "Aruyan!", And when I pressed the [jar] link, I got a 404 Not Found ... Both of the jars in error were in the same state.

Action 1: change the version of jar defined in pom.xml

If you search the jotm defined in pom.xml again with Maven Repository: Search / Browse / Explore It was Note: This artifact was moved to: org.ow2.jotm» jotm.

I followed the link and decided to use the oldest version of 2.1.1 in ʻorg.ow2.jotm »jotm`.

Pom after change.xml

...abridgement...
    <dependency>
      <groupId>org.ow2.jotm</groupId>
      <artifactId>jotm</artifactId>
      <version>2.1.1</version>
      <type>pom</type>
      <exclusions>
...abridgement...

Solution 2: Install the jar that is dependent on the jar with Maven

Reference: How to specify a library that is not in the Maven repository in pom.xml --grep Tips How to say "The version cannot be changed!" Of jotm

1. Get the jar that became Missing artifact ――I'll do my best to get it from the ~ / .m2 / repository directory in someone's environment or somewhere on the Internet.
2. Store the jar around the project's WEB-INF / lib / directory so you don't lose it
3. Install with Maven --Check the optional -DgroupId``-DartifactId -Dversion with the pom of jotm
4. [Maven]> [Update Project ...] in Eclipse

#Go to the jar location
$ cd path/to/WEB-INF/lib/

#Install jar with Maven
$ mvn install:install-file -Dfile=jta-1.0.1B.jar -DgroupId=javax.transaction -DartifactId=jta -Dversion=1.0.1B -Dpackaging=jar
[INFO] Scanning for projects...
...abridgement...

$ mvn install:install-file -Dfile=connector-1.0.jar -DgroupId=javax.resource -DartifactId=connector -Dversion=1.0 -Dpackaging=jar
[INFO] Scanning for projects...
...abridgement...

#Then maven with jar-metadata-local.xml is created
$ find ~/.m2/repository/javax/ -iname *.xml
/home/ponsuke/.m2/repository/javax/resource/connector/maven-metadata-local.xml
/home/ponsuke/.m2/repository/javax/transaction/jta/maven-metadata-local.xml