spring tool suite spring mvc project - 22 problems right after creating

Question

So, I downloaded and installed STS and then I've created a new Spring MVC Project. Right after that sts alert me about 22 problems, here they are:

Description Resource    Path    Location    Type
Missing artifact aopalliance:aopalliance:jar:1.0    pom.xml /ContactManager line 1          Maven Dependency Problem
Missing artifact org.springframework:spring-beans:jar:3.1.1.RELEASE pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.springframework:spring-context:jar:3.1.1.RELEASE   pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.springframework:spring-aop:jar:3.1.1.RELEASE   pom.xml /ContactManager 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): C:\Users\Skeeve\.m2\repository\org\slf4j\slf4j-api\1.6.6\slf4j-api-1.6.6.pom.ahc3656264e3b414ddf (Не удается найти указанный файл)   pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.slf4j:jcl-over-slf4j:jar:1.6.6 pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.aspectj:aspectjrt:jar:1.6.10   pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.springframework:spring-web:jar:3.1.1.RELEASE   pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.springframework:spring-context-support:jar:3.1.1.RELEASE   pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.springframework:spring-webmvc:jar:3.1.1.RELEASE    pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.springframework:spring-asm:jar:3.1.1.RELEASE   pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.springframework:spring-expression:jar:3.1.1.RELEASE    pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.springframework:spring-core:jar:3.1.1.RELEASE  pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact junit:junit:jar:4.7    pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact javax.servlet:jstl:jar:1.2 pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact javax.servlet.jsp:jsp-api:jar:2.1  pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact javax.servlet:servlet-api:jar:2.5  pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact javax.inject:javax.inject:jar:1    pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact log4j:log4j:jar:1.2.15 pom.xml /ContactManager line 1  Maven Dependency Problem
Missing artifact org.slf4j:slf4j-log4j12:jar:1.6.6  pom.xml /ContactManager line 1  Maven Dependency Problem

Description Resource    Path    Location    Type
The project cannot be built until build path errors are resolved    ContactManager      Unknown Java Problem

Description Resource    Path    Location    Type
The container 'Maven Dependencies' references non existing library 'C:\Users\Skeeve\.m2\repository\org\springframework\spring-context\3.1.1.RELEASE\spring-context-3.1.1.RELEASE.jar'   ContactManager      Build path  Build Path Problem

How can I solve that problem? Thank you

Answer 1

I've also encountered a lot of error when creating a new STS project for the first time. This seems to be happen only if I don't have any Maven repository or haven't launch/use Maven before. In my case, I solve this by launching Maven command from command line manually. Try to 'cd' to the project directory that contains pom.xml and call mvn that comes with STS from there.

   cd c:\users\name\sts-projects\projectname
   c:\programs\springsource\apache-maven-3.0.3\bin\mvn compile

Then, open STS, right click on project name, select 'Maven', 'Update Project...' Select on 'Force Update of Snapshots/Releases'. Don't select 'Offline'.

Answer 2

Are you behind a proxy? If so, you need to configure Maven to use it.

If that is not the case just right-click on your project and select Maven->Update Project Configuration. This should work. Probably you have to clean/refresh the project.