清理并生成 出现下面问题
Netbeans 清理并生成 出现下面问题：
:: problems summary ::
:::: WARNINGS
::::::::::::::::::::::::::::::::::::::::::::::
:: UNRESOLVED DEPENDENCIES ::
::::::::::::::::::::::::::::::::::::::::::::::
:: log4j#log4j;1.2.16: configuration not found in log4j#log4j;1.2.16: 'master'. It was required from org.slf4j#slf4j-log4j12;1.6.1 compile
::::::::::::::::::::::::::::::::::::::::::::::
:::: ERRORS
Server access Error: Connection timed out: connect url=http://repo1.maven.org/maven2/log4j/log4j/1.2.16/log4j-1.2.16.pom
:: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS
E:\CCSVN\ningyang\A.开发库\05.编码\sprbus\sprbu\sprbus-war\nbproject\ivy-impl.xml:58: impossible to resolve dependencies:
resolve failed - see output for details
