Maven本身提倡的一个原则是，不要使用任何外部的SNAPSHOT依赖，这里我却在使用SNAPSHOT的Maven，未免有些讽刺的意味，因此难免有些担心。不过，build完Nexus之后，我的担心就消除了，使用maven3 build Nexus没有出现任何问题。而且从build输出我就发现maven3的一大优点，build输出更加明了。
Maven3输出
[INFO] Building Nexus (API) 1.4.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.2:clean (default-clean) @ nexus-api ---
[INFO] Deleting directory /home/juven/workspaces/ws-nexus/nexus/nexus-api/target
[INFO]
[INFO] --- maven-resources-plugin:2.4:resources (default-resources) @ nexus-api ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /home/juven/workspaces/ws-nexus/nexus/nexus-api/src/main/resources
[INFO]
[INFO] --- maven-compiler-plugin:2.0.2:compile (default-compile) @ nexus-api ---
[INFO] Compiling 191 source files to /home/juven/workspaces/ws-nexus/nexus/nexus-api/target/classes
[INFO]
[INFO] --- plexus-component-metadata:1.2.1:generate-metadata (process-classes) @ nexus-api ---
[INFO] Discovered 1 component descriptors(s)
[INFO]
[INFO] --- maven-resources-plugin:2.4:testResources (default-testResources) @ nexus-api ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /home/juven/workspaces/ws-nexus/nexus/nexus-api/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:2.0.2:testCompile (default-testCompile) @ nexus-api ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- plexus-component-metadata:1.2.1:generate-test-metadata (process-test-classes) @ nexus-api ---
离线安装maven eclipse插件
1、在eclipse目录下的dropins目录下新建一个maven.link文件，文件名不受限制
2、在maven.link文件中指向maven插件：path=../myplugin/maven3
3、从新启动eclipse，window->首选项，找到maven标签进行设
