POM errors using manually downloaded dependencies

Question

I'm working on a web-app that a group started a while ago, but I can't make it run.

I'm quite a newbie with STS (Spring Tool Suite) and Java, and I installed all the dependencies manually with .jar files. But now my pom.xml is showing many errors. I guess there's a way to resolve this with Maven, but I'm don't know how do do it.

Here is the pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>edu.isep</groupId>
    <artifactId>easypark</artifactId>
    <name>EasyPark</name>
    <packaging>war</packaging>
    <version>1.0.0-BUILD-SNAPSHOT</version>
    <properties>
        <java-version>1.6</java-version>
        <org.springframework-version>3.1.1.RELEASE</org.springframework-version>
        <org.aspectj-version>1.6.10</org.aspectj-version>
        <org.slf4j-version>1.6.6</org.slf4j-version>
    </properties>
    <dependencies>
        <!-- Spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>3.2.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${org.springframework-version}</version>
            <exclusions>
                <!-- Exclude Commons Logging in favor of SLF4j -->
                <exclusion>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${org.springframework-version}</version>
        </dependency>

        <!-- AspectJ -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>${org.aspectj-version}</version>
        </dependency>

        <!-- Logging -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${org.slf4j-version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>${org.slf4j-version}</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${org.slf4j-version}</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.15</version>
            <exclusions>
                <exclusion>
                    <groupId>javax.mail</groupId>
                    <artifactId>mail</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>javax.jms</groupId>
                    <artifactId>jms</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.sun.jdmk</groupId>
                    <artifactId>jmxtools</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.sun.jmx</groupId>
                    <artifactId>jmxri</artifactId>
                </exclusion>
            </exclusions>
            <scope>runtime</scope>
        </dependency>

        <!-- @Inject -->
        <dependency>
            <groupId>javax.inject</groupId>
            <artifactId>javax.inject</artifactId>
            <version>1</version>
        </dependency>

        <!-- BDD -->

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.35</version>
        </dependency>

        <!-- Servlet -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!-- Test -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.7</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${org.springframework-version}</version>
        </dependency>

    </dependencies>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-eclipse-plugin</artifactId>
                <version>2.9</version>
                <configuration>
                    <additionalProjectnatures>
                        <projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
                    </additionalProjectnatures>
                    <additionalBuildcommands>
                        <buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
                    </additionalBuildcommands>
                    <downloadSources>true</downloadSources>
                    <downloadJavadocs>true</downloadJavadocs>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                    <compilerArgument>-Xlint:all</compilerArgument>
                    <showWarnings>true</showWarnings>
                    <showDeprecation>true</showDeprecation>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.2.1</version>
                <configuration>
                    <mainClass>org.test.int1.Main</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

And here are the errors:

ArtifactDescriptorException: Failed to read artifact descriptor for javax.inject:javax.inject:jar:1: ArtifactResolutionException: Failure to transfer javax.inject:javax.inject:pom:1 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact javax.inject:javax.inject:pom:1 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org  pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for javax.servlet:jstl:jar:1.2: ArtifactResolutionException: Failure to transfer javax.servlet:jstl:pom:1.2 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact javax.servlet:jstl:pom:1.2 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for javax.servlet:servlet-api:jar:2.5: ArtifactResolutionException: Failure to transfer javax.servlet:servlet-api:pom:2.5 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact javax.servlet:servlet-api:pom:2.5 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org    pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for junit:junit:jar:4.7: ArtifactResolutionException: Failure to transfer junit:junit:pom:4.7 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact junit:junit:pom:4.7 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org  pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for log4j:log4j:jar:1.2.15: ArtifactResolutionException: Failure to transfer log4j:log4j:pom:1.2.15 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact log4j:log4j:pom:1.2.15 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for mysql:mysql-connector-java:jar:5.1.35: ArtifactResolutionException: Failure to transfer mysql:mysql-connector-java:pom:5.1.35 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact mysql:mysql-connector-java:pom:5.1.35 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org    pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for org.aspectj:aspectjrt:jar:1.6.10: ArtifactResolutionException: Failure to transfer org.aspectj:aspectjrt:pom:1.6.10 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.aspectj:aspectjrt:pom:1.6.10 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org   pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for org.slf4j:jcl-over-slf4j:jar:1.6.6: ArtifactResolutionException: Failure to transfer org.slf4j:jcl-over-slf4j:pom:1.6.6 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.slf4j:jcl-over-slf4j:pom:1.6.6 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for org.slf4j:slf4j-api:jar:1.6.6: ArtifactResolutionException: Failure to transfer org.slf4j:slf4j-api:pom:1.6.6 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.slf4j:slf4j-api:pom:1.6.6 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org    pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for org.slf4j:slf4j-log4j12:jar:1.6.6: ArtifactResolutionException: Failure to transfer org.slf4j:slf4j-log4j12:pom:1.6.6 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.slf4j:slf4j-log4j12:pom:1.6.6 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org    pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for org.springframework:spring-context:jar:3.1.1.RELEASE: ArtifactResolutionException: Failure to transfer org.springframework:spring-context:pom:3.1.1.RELEASE from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.springframework:spring-context:pom:3.1.1.RELEASE from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org   pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for org.springframework:spring-jdbc:jar:3.1.1.RELEASE: ArtifactResolutionException: Failure to transfer org.springframework:spring-jdbc:pom:3.1.1.RELEASE from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.springframework:spring-jdbc:pom:3.1.1.RELEASE from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org    pom.xml /easypark   line 1  Maven Dependency Problem
ArtifactDescriptorException: Failed to read artifact descriptor for org.springframework:spring-webmvc:jar:3.1.1.RELEASE: ArtifactResolutionException: Failure to transfer org.springframework:spring-webmvc:pom:3.1.1.RELEASE from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.springframework:spring-webmvc:pom:3.1.1.RELEASE from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org  pom.xml /easypark   line 1  Maven Dependency Problem
Missing artifact commons-logging:commons-logging:jar:1.1.1  pom.xml /easypark   line 1  Maven Dependency Problem
Missing artifact org.springframework:spring-beans:jar:3.2.2.RELEASE pom.xml /easypark   line 1  Maven Dependency Problem
Missing artifact org.springframework:spring-core:jar:3.2.2.RELEASE  pom.xml /easypark   line 1  Maven Dependency Problem

How can I resolve these errors?

Answer 1

I have tried your pom, there's no problem:

[INFO] Wrote Eclipse project for "easypark" to D:\NAR8_3G\git\test.
[INFO]
       Javadoc for some artifacts is not available.
       List of artifacts without a javadoc archive:
         o org.springframework:spring-context:3.1.1.RELEASE
         o org.springframework:spring-aop:3.1.1.RELEASE
         o aopalliance:aopalliance:1.0
         o org.springframework:spring-asm:3.1.1.RELEASE
         o org.springframework:spring-expression:3.1.1.RELEASE
         o org.springframework:spring-webmvc:3.1.1.RELEASE
         o org.springframework:spring-context-support:3.1.1.RELEASE
         o org.springframework:spring-web:3.1.1.RELEASE
         o log4j:log4j:1.2.15
         o mysql:mysql-connector-java:5.1.35
         o javax.servlet:servlet-api:2.5
         o javax.servlet.jsp:jsp-api:2.1
         o javax.servlet:jstl:1.2
         o junit:junit:4.7
         o org.springframework:spring-jdbc:3.1.1.RELEASE
         o org.springframework:spring-tx:3.1.1.RELEASE

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4:05.386s
[INFO] Finished at: Sun Jun 21 23:55:53 CST 2015
[INFO] Final Memory: 8M/223M
[INFO] ------------------------------------------------------------------------

Could you try "mvn -U install"? -U will force update your repository.

Answer 2

and I installed all the dependencies manually with .jar files.

One of the main points with Maven is that it automatically dowloads the dependencies (typically jar files). In other words, I suspect that you don't really know what you are doing here, unless there is a specific reason behind your manual download of the files.

All the dependencies Maven downloads are stored in your own local repository (typically ~/.m2).

I just tested your pom file and it has no errors, all dependencies were downloaded correctly. To resolve your errors, you can simply remove the folders in your local repository, and re-build the project letting Maven download the dependencies.