I have some missing jar files in my .m2 folder of maven.

Question

Can I download the whole .m2 folder from the internet in place of downloading single jar file?

Answer 1

Remember...

Over the classical way (put a dependency inside a pom and delegate to maven the download)

You have two way to copy a jar into m2

1: The "manual one" just download the jar an put inside the file inside .m2 under the correct path..

2: The official one----> http://maven.apache.org/guides/mini/guide-3rd-party-jars-local.html

Answer 2

I'm not understanding ...

If I've to make Spring application ...

I put all the dependencies inside my pom.xml .... like this:

<?xml version="1.0" encoding="UTF-8"?>
<!-- A project with Spring MVC, JPA and Hibernate SessionFactory -->
<project>
<modelVersion>4.0.0</modelVersion>
<groupId>MavenWeb</groupId>
<artifactId>MavenWeb</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<description></description>
<dependencies>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>
    <dependency>
        <groupId>javassist</groupId>
        <artifactId>javassist</artifactId>
        <version>3.12.1.GA</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>3.6.3.Final</version>
    </dependency>
    <!-- dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> 
        <version>1.4.2</version> </dependency -->
    <dependency>
        <groupId>taglibs</groupId>
        <artifactId>standard</artifactId>
        <version>1.1.2</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.1.2</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.10</version>
    </dependency>
    <dependency>
        <groupId>commons-dbcp</groupId>
        <artifactId>commons-dbcp</artifactId>
        <version>20030825.184428</version>
    </dependency>
    <dependency>
        <groupId>commons-pool</groupId>
        <artifactId>commons-pool</artifactId>
        <version>20030825.183949</version>
    </dependency>
</dependencies>
<properties>
    <org.springframework.version>3.0.2.RELEASE</org.springframework.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
    <plugins>
        <plugin>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.0.1</version>
        </plugin>
    </plugins>
</build>
</project>

When I run the Maven install, maven downloads from the remote central repository to the jar it needs to run the application...

in this way you've downloaded all the jars you need inside your .m2 folder...

That's the usual use of Maven dependencies management ....

but if it's does not help you, maybe I'm not understanding your problem...

Answer 3

If jars are missing which you placed in pom.xml and you want to download, then Right click on your project and run as "Maven Install" it will download the missing jars.

Answer 4

Maybe the actual JAR file you are looking for is not provided in the release, but the POM file is. In that case, until you explicitly tell Maven to use the BOM file to import the needed library, the former will only set up a correct folder hierarchy in your .m2 repository, but with nothing interesting in it.

See the official documentation for the correct lines of code to do so. Here is an example dealing with the org.codehaus.groovy:groovy-all:2.5.9 library (see the top-right item for the Apache Maven lines of code).