Can ivy or ivyDE add related jars into JAVA build path library automatically in Eclipse?

Question

For example, when I open a well developed opensource project (like lucene) into Eclipse (with both ant build.xml and ivy ivysetting.xml), I can run ant with build.xml to build the whole project successfully.

However, the project is full of errors in a mess of .java classes. This is caused by unlinking to the external jars. These jars are already download by ivy and stored in {user}/.ivy2/cache/. Also, when I manually put each of these jars into the build path of this project, the errors are gone.

Can ivy or ivyDE or some other tools put the jars into the JAVA build path automatically?

Here is the ivy-setting.xml:

<!--
   Licensed to the Apache Software Foundation (ASF) under one
   or more contributor license agreements.  See the NOTICE file
   distributed with this work for additional information
   regarding copyright ownership.  The ASF licenses this file
   to you under the Apache License, Version 2.0 (the
   "License"); you may not use this file except in compliance
   with the License.  You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing,
   software distributed under the License is distributed on an
   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   KIND, either express or implied.  See the License for the
   specific language governing permissions and limitations
   under the License.    
-->
<ivy-module version="2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:noNamespaceSchemaLocation="http://ant.apache.org/ivy/schemas/ivy.xsd">
    <info
        organisation=""
        module="lucene-5.0.0"
        status="integration">
	</info>
<ivysettings>
  <settings defaultResolver="default"/>
  
  <property name="local-maven2-dir" value="${user.home}/.m2/repository/" />
  
  <properties file="${ivy.settings.dir}/ivy-versions.properties" override="false"/>
  
  <include url="${ivy.default.settings.dir}/ivysettings-public.xml"/>
  <include url="${ivy.default.settings.dir}/ivysettings-shared.xml"/>
  <include url="${ivy.default.settings.dir}/ivysettings-local.xml"/>
  <include url="${ivy.default.settings.dir}/ivysettings-main-chain.xml"/>

  <caches lockStrategy="artifact-lock" resolutionCacheDir="${common.build.dir}/ivy-resolution-cache" /> 

  <resolvers>
    <ibiblio name="sonatype-releases" root="https://oss.sonatype.org/content/repositories/releases" m2compatible="true" />
    <ibiblio name="maven.restlet.org" root="http://maven.restlet.org" m2compatible="true" />
    <ibiblio name="releases.cloudera.com" root="http://repository.cloudera.com/content/repositories/releases" m2compatible="true" />
    
    <!-- needed only for newer svnkit releases, e.g. 1.8.x -->
    <ibiblio name="svnkit-releases" root="http://maven.tmatesoft.com/content/repositories/releases" m2compatible="true" />

    <!-- you might need to tweak this from china so it works -->
    <ibiblio name="working-chinese-mirror" root="http://uk.maven.org/maven2" m2compatible="true" />
    
    <!--
    <filesystem name="local-maven-2" m2compatible="true" local="true">
      <artifact
          pattern="${local-maven2-dir}/[organisation]/[module]/[revision]/[module]-[revision].[ext]" />
      <ivy
          pattern="${local-maven2-dir}/[organisation]/[module]/[revision]/[module]-[revision].pom" />
    </filesystem>
    -->

    <chain name="default" returnFirst="true" checkmodified="true" changingPattern=".*SNAPSHOT">
      <resolver ref="local"/>
      <!-- <resolver ref="local-maven-2" /> -->
      <resolver ref="main"/>
      <resolver ref="maven.restlet.org" />
      <resolver ref="sonatype-releases" />
      <resolver ref="releases.cloudera.com"/>
      <!-- <resolver ref="svnkit-releases" /> -->
      <resolver ref="working-chinese-mirror" />
    </chain>
  </resolvers>

</ivysettings>
</ivy-module>

Answer 1

It would if you use the Ivy Eclipse plugin. If you have it installed, you'll need to add the IVY runtime to the build path of the project. This can be done via Project Properties->Java Build Path under the Libraries tab, select Add Library then select IvyDE Managed Dependencies.

Once that's done, an Ivy resolve will add all the jars specified in ivy.xml to the project's build path.

Answer 2

You need to add ivysettings.xml file to your project and set it in Preferences (Window --> Preferences --> Ivy --> Settings: Ivy settings path). When it is absent, ivy doesn't know where to look for dependencies.

(Maybe it is enough to add the file to one of your projects, but I'm not sure.)