常用maven public repository

收集了一些maven public repository如下：

	<repositories>
		<repository>
			<id>spring-snapshots</id>
			<url>http://repo.spring.io/snapshot</url>
			<snapshots><enabled>true</enabled></snapshots>
			<releases><enabled>false</enabled></releases>
		</repository>
    	<repository>
			<id>spring-milestones</id>
			<url>http://repo.spring.io/milestone</url>
			<snapshots><enabled>false</enabled></snapshots>
			<releases><enabled>true</enabled></releases>
		</repository>
		<repository>
			<id>java-net</id>
			<url>https://maven.java.net/content/repositories/releases</url>
		</repository>
		 <repository>
		    <id>central</id>
		    <url>http://repo1.maven.org/maven2/</url>
		  </repository>
		  <repository>
			<id>spring-repo</id>
			<name>spring</name>
			<url>http://repo.springsource.org/libs-milestone</url>
		</repository>
		<repository>
         <id>baemaven-releases</id> 
         <url>http://maven.duapp.com/nexus/content/repositories/releases/</url> 
    	</repository>
	</repositories>