spring tool suite spring mvc project - 22 problemi subito dopo la creazione

Question

Così, ho scaricato e installato STS e poi ho creato un nuovo progetto Spring MVC. Subito dopo questo mi avvertono circa 22 problemi, eccoli:

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 

Come posso risolvere questo problema? Grazie

Answer 1

Ho anche riscontrato un sacco di errori durante la creazione di un nuovo progetto STS per la prima volta. Questo sembra accadere solo se non ho alcun repository Maven o non ho ancora avviato/usato Maven. Nel mio caso, risolvo questo avviando manualmente il comando Maven dalla riga di comando. Prova a "cd" nella directory del progetto che contiene pom.xml e chiama mvn fornito con STS da lì.

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

Poi, STS aperti, fare clic destro sul nome del progetto, selezionare 'Maven', 'Aggiornamento progetto ...' Seleziona il 'Forza aggiornamento di istantanee/Uscite'. Non selezionare 'Offline'.

Answer 2

Sei dietro un proxy? Se è così, devi configurare Maven per usarlo.

In caso contrario, fare clic con il pulsante destro del mouse sul progetto e selezionare Maven-> Aggiorna configurazione progetto. Questo dovrebbe funzionare. Probabilmente devi pulire/aggiornare il progetto.