Eclipse MAVEN Issues Rollup

In the process of using Eclipse+maven, encountered a series of problems, the first summary records are as follows:

1. In Java engineering, there is a lack of maven dependencies:

This problem is more difficult, generally ECLISPE engineering structure is not very understanding, and later after a long period of investigation, found in the project path there is a. classpath file, normally, this file looks like this:

<?XML version= "1.0" encoding= "UTF-8"?><Classpath>    <ClasspathentryKind= "src"Path= "Src/main/java"/>    <ClasspathentryKind= "src"Path= "Src/test/java"/>    <ClasspathentryKind= "Con"Path= "Org.eclipse.jdt.launching.JRE_CONTAINER"/>    <ClasspathentryKind= "Con"Path= "Org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">        <attributes>            <attributename= "Owner.project.facets"value= "Maven.deps"/>        </attributes>    </Classpathentry>    <ClasspathentryKind= "Con"Path= "ORG.ECLIPSE.JDT.JUNIT.JUNIT_CONTAINER/4"/>    <ClasspathentryKind= "Lib"Path= "E:/cvs/fileio/lib/sec.jar"/>    <ClasspathentryKind= "Output"Path= "Target/classes"/></Classpath>

If there is no Maven dependencies in the first diagram, it is because the. CLASSPATH file does not have the configuration Org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER, and if this is the case, You can include these lines in the. classpath file in the project path:

<ClasspathentryKind= "Con"Path= "Org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">        <attributes>            <attributename= "Owner.project.facets"value= "Maven.deps"/>        </attributes>    </Classpathentry>

Then restart Eclipse to see Maven dependencies as normal. This workaround is for the standard version of Eclispe, such as Eclispe for Java EE Developer.

If a commercial version of Eclipse, such as MyEclipse 2015, has a more convenient solution:

In MyEclipse project facets, you can add Maven Dependencies to your project by selecting Maven Support-dependencies only:

2. The second issue is to install MAVEN externally, and select the Setup source and M2 path settings:

Download Good apache-maven:

Extract:

Set the M2_HOME environment variable in My computer:

Add the Maven bin to path:

%m2_home\bin;

From the command line you can see:

In Eclipse, set up the MAVEN that you just installed:

There are settings.xml in the Conf directory of the MAVEN installation path:

<Settingsxmlns= "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/settings-1.0.0.xsd" >   <Mirrors>    <Mirror>      <ID>CN</ID>      <name>Oschina Central</name>                                                                                                                             <URL>http://maven.oschina.net/content/groups/public/</URL>      <mirrorof>Central</mirrorof>    </Mirror>  </Mirrors>    <localrepository>D:\Java\m2\repository</localrepository></Settings>

Then set in Eclipse, select the settings.xml file you just set up, and you can see that the path in the local repository becomes the local path set in Settings.xml:

3. There was a problem with soruce path and output dir in eclipse, which caused the project to find its own package:

Eclipse MAVEN Issues Rollup