第一种用法：引用org.apache.commons.logging.Log。

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

private static final Log logger = LogFactory.getLog(PolicyAppBizAction.class);  //PolicyAppBizAction.class是自己定义的当前类名。

logger.info("=======================calc start======================");

logger.debug("传递过来的参数 => " + param);

logger.debug("submitToUnderwriting:参数 => " + serviceRequest.getCUST_DATA());

catch (Exception e) {

logger.error("团单险别VO属性拷贝异常. PolicyAppBizAction.procGroupCvrg()");

throw new BusinessServiceException(e);

}

第二种用法：调用log4j。

import org.apache.log4j.Logger;

private Logger logger = Logger.getLogger(this.getClass()); //this.getClass()指当前的类。

public Logger getLogger() {

return this.logger;

}

public void setLogger(Logger logger) {

this.logger = logger;

}

this.logger.info("==============调用平台接口投保预确认出错========================");