Maven出現間歇性問題，缺少所需的類

Question

在構建ActiveJDBC（我是該項目的作者）時，它首先生成一個Maven插件：https://github.com/javalite/activejdbc/tree/master/activejdbc-instrumentation 插件安裝後，它用於不同的項目模塊是一個多模塊項目）。 有時生成成功，有時它與此錯誤消息打破：

[INFO] JavaLite - Common .................................. SUCCESS [ 4.241 s] 
[INFO] JavaLite - Instrumentation Plugin and JavaAgent .... SUCCESS [ 2.590 s] 
[INFO] JavaLite - ActiveJDBC ORM Framework ................ FAILURE [ 5.526 s] 
[INFO] JavaLite - DB-Migrator Maven Plugin ................ SKIPPED 
[INFO] JavaLite - DB-Migrator Integration Test ............ SKIPPED 
[INFO] JavaLite - Git Info Maven plugin ................... SKIPPED 
[INFO] JavaLite - ActiveJDBC Root ......................... SKIPPED 
[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD FAILURE 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 12.572 s 
[INFO] Finished at: 2014-10-27T23:01:22-05:00 
[INFO] Final Memory: 26M/271M 
[INFO] ------------------------------------------------------------------------ 
[ERROR] Failed to execute goal org.javalite:activejdbc-instrumentation:1.4.10-SNAPSHOT:instrument (default) on project activejdbc: Execution default of goal org.javalite:activejdbc-instrumentation:1.4.10-SNAPSHOT:instrument failed: A required class was missing while executing org.javalite:activejdbc-instrumentation:1.4.10-SNAPSHOT:instrument: javassist/ClassPath 
[ERROR] ----------------------------------------------------- 
[ERROR] realm = plugin>org.javalite:activejdbc-instrumentation:1.4.10-SNAPSHOT 
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy 
[ERROR] urls[0] = file:/home/igor/projects/javalite/activejdbc/activejdbc-instrumentation/target/activejdbc-instrumentation-1.4.10-SNAPSHOT.jar 
[ERROR] urls[1] = file:/home/igor/.m2/repository/org/codehaus/plexus/plexus-utils/1.1/plexus-utils-1.1.jar 
[ERROR] urls[2] = file:/home/igor/projects/javalite/activejdbc/activejdbc/target/classes/ 
[ERROR] urls[3] = file:/home/igor/.m2/repository/org/slf4j/slf4j-api/1.7.5/slf4j-api-1.7.5.jar 
[ERROR] urls[4] = file:/home/igor/projects/javalite/activejdbc/javalite-common/target/javalite-common-1.4.10-SNAPSHOT.jar 
[ERROR] urls[5] = file:/home/igor/projects/javalite/activejdbc/activejdbc/target/test-classes/ 
[ERROR] Number of foreign imports: 1 
[ERROR] import: Entry[import from realm ClassRealm[maven.api, parent: null]] 
[ERROR] 
[ERROR] -----------------------------------------------------: javassist.ClassPath 
[ERROR] -> [Help 1] 
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. 
[ERROR] Re-run Maven using the -X switch to enable full debug logging. 
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles: 
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException 
[ERROR] 
[ERROR] After correcting the problems, you can resume the build with the command 
[ERROR] mvn <goals> -rf :activejdbc 

據我所看到的，問題是： A required class was missing while executing org.javalite:activejdbc-instrumentation:1.4.10-SNAPSHOT:instrument: javassist/ClassPath

但是這個類是直接打包成的jar文件插件，請看這裏： https://oss.sonatype.org/content/repositories/snapshots/org/javalite/activejdbc/1.4.10-SNAPSHOT/

所以，構建有時工作，但有時會中斷..沒有任何代碼或配置的變化 - 在同一個終端窗口。基本上，我需要建立幾次，才能獲得成功。請幫助確定並解決問題，

我試過Maven 3.0.4和3.2.3。

感謝

Answer 1

你對在POM Javassist是一個依賴..

<dependency> 
    <groupId>javassist</groupId> 
    <artifactId>javassist</artifactId> 
    <version>3.18.2.GA</version> 
</dependency>