錯誤：無法解決依賴關係（maven javaEE項目）

Question

我有一個maven Entreprise應用程序項目。我在EJB項目中創建了持久性單元，實體類和EJB會話Bean。我有這樣的錯誤，當我嘗試建立項目：

無法執行的項目Blog6的EJB的目標：無法解析 依賴項目com.mycompany：Blog6的EJB：EJB：1.0快照：該 下列工件無法解析： org.eclipse.persistence：eclipselink：jar：2.2.0, org.eclipse.persistence：javax.persistence：jar：2.0.3, org.eclipse.persistence：org.eclipse .persistence.jpa.modelgen.processor：jar：2.2.0： 未找到org.eclipse.persistence：eclipselink：jar：2.2.0在 中http://ftp.ing.umu.se/mirror/eclipse/rt/eclipselink/maven.repo是 緩存在本地存儲庫中，分辨率不會重試 直到的EclipseLink的更新間隔已過或更新是 被迫 - > [幫助1]

這裏是在pom.xml中

<?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/xsd/maven-4.0.0.xsd"> 
<modelVersion>4.0.0</modelVersion> 
<parent> 
<artifactId>Blog6</artifactId> 
<groupId>com.mycompany</groupId> 
<version>1.0-SNAPSHOT</version> 
</parent> 

<groupId>com.mycompany</groupId> 
<artifactId>Blog6-ejb</artifactId> 
<version>1.0-SNAPSHOT</version> 
<packaging>ejb</packaging> 

<name>Blog6-ejb</name> 

<properties> 
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir> 
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
<netbeans.hint.deploy.server>gfv3ee6</netbeans.hint.deploy.server> 
</properties> 

<dependencies> 
<dependency> 
<groupId>org.eclipse.persistence</groupId> 
<artifactId>eclipselink</artifactId> 
<version>2.2.0</version> 
<scope>provided</scope> 
</dependency> 
<dependency> 
<groupId>org.eclipse.persistence</groupId> 
<artifactId>javax.persistence</artifactId> 
<version>2.0.3</version> 
<scope>provided</scope> 
</dependency> 
<dependency> 
<groupId>org.eclipse.persistence</groupId> 
<artifactId>org.eclipse.persistence.jpa.modelgen.processor</artifactId> 
<version>2.2.0</version> 
<scope>provided</scope> 
</dependency> 
<dependency> 
<groupId>javax</groupId> 
<artifactId>javaee-api</artifactId> 
<version>6.0</version> 
<scope>provided</scope> 
</dependency> 

<dependency> 
<groupId>junit</groupId> 
<artifactId>junit</artifactId> 
<version>4.8.2</version> 
<scope>test</scope> 
</dependency> 

</dependencies> 

<build> 
<plugins> 
<plugin> 
<groupId>org.apache.maven.plugins</groupId> 
<artifactId>maven-compiler-plugin</artifactId> 
<version>2.3.2</version> 
<configuration> 
<source>1.6</source> 
<target>1.6</target> 
<compilerArguments> 
<endorseddirs>${endorsed.dir}</endorseddirs> 
</compilerArguments> 
</configuration> 
</plugin> 
<plugin> 
<groupId>org.apache.maven.plugins</groupId> 
<artifactId>maven-ejb-plugin</artifactId> 
<version>2.3</version> 
<configuration> 
<ejbVersion>3.1</ejbVersion> 
</configuration> 
</plugin> 
<plugin> 
<groupId>org.apache.maven.plugins</groupId> 
<artifactId>maven-dependency-plugin</artifactId> 
<version>2.1</version> 
<executions> 
<execution> 
<phase>validate</phase> 
<goals> 
<goal>copy</goal> 
</goals> 
<configuration> 
<outputDirectory>${endorsed.dir}</outputDirectory> 
<silent>true</silent> 
<artifactItems> 
<artifactItem> 
<groupId>javax</groupId> 
<artifactId>javaee-endorsed-api</artifactId> 
<version>6.0</version> 
<type>jar</type> 
</artifactItem> 
</artifactItems> 
</configuration> 
</execution> 
</executions> 
</plugin> 
</plugins> 
</build> 
<repositories> 
<repository> 
<url>http://ftp.ing.umu.se/mirror/eclipse/rt/eclipselink/maven.repo</url> 
<id>eclipselink</id> 
<layout>default</layout> 
<name>Repository for library Library[eclipselink]</name> 
</repository> 
</repositories> 
</project> 

的persistence.xml

<?xml version="1.0" encoding="UTF-8"?> 
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"> 
<persistence-unit name="com.mycompany_Blog6-ejb_ejb_1.0-SNAPSHOTPU" transaction-type="JTA"> 
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> 
<jta-data-source>jdbc/sample</jta-data-source> 
<exclude-unlisted-classes>false</exclude-unlisted-classes> 
<properties> 
<property name="eclipselink.ddl-generation" value="create-tables"/> 
</properties> 
</persistence-unit> 
</persistence> 

代碼

感謝您的幫助

Answer 1

已報告使用Maven存儲庫的Eclipse鏡像會導致來自工件被報告爲不可用於本地Maven存儲庫損壞的不同問題。因此，與其使用鏡像下載網址：http://www.eclipse.org/downloads/download.php?r=1&nf=1&file=/rt/eclipselink/maven.repo建議您使用鏡像的網址直接訪問Eclipse的下載網站，而不是EclipseLink的Maven倉庫：http://download.eclipse.org/rt/eclipselink/maven.repo

來源&更多信息：http://wiki.eclipse.org/EclipseLink/Maven包括如何編輯您的pom文件以指向不同的回購。

Answer 2

如果您要創建簡單的Java EE 6的應用程序與持久性激活，您可以用提供的文物開始，例如像這樣：

mvn archetype:generate -DarchetypeArtifactId=jboss-javaee6-webapp -DarchetypeGroupId=org.jboss.weld.archetypes -DarchetypeVersion=1.0.1.CR1 -DarchetypeRepository=central 

或只有簡單的servlet容器：

mvn archetype:generate -DarchetypeArtifactId=jboss-jsf-weld-servlet-webapp -DarchetypeGroupId=org.jboss.weld.archetypes -DarchetypeVersion=1.0.1.Beta1 -DarchetypeRepository=central 

這裏找到：http://seamframework.org/Documentation/CDIQuickstartForMavenUsers

生成項目後，將其導入到你選擇的IDE作爲現有Maven項目。