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当我构建任何wso2产品和内核时,我会收到log4j警告。构建wso2内核时的log4j警告
log4j:WARN No appenders could be found for logger (org.wso2.carbon.context.internal.CarbonContextDataHolder).
log4j:WARN Please initialize the log4j system properly.
如何正确配置它?