使用SLF4J打印日志,它有一个占位符(place holder){},一般不是异常的是这样打印的:
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logger.info("InvestmentFacadeImpl queryInvestmentInfo: investmentListResponse is {}", investmentListResponse);
{} 就是一个占位符,那么打印出来的结果就是
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InvestmentFacadeImpl queryInvestmentInfo: investmentListResponse is ********
如果是异常,那么该怎么打印呢?
一个错误的示范:
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logger.error("CrowdFundingAssetServiceImpl insert throws exception is {}", e.getMessage());
其实我们可以去看一下error() 方法的源码,就知道正确的打印方式了:
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/**
* Log an exception (throwable) at the ERROR level with an
* accompanying message.
*
* @param msg the message accompanying the exception
* @param t the exception (throwable) to log
*/
public void error(String msg, Throwable t);
对于异常,是不需要占位符的,而且也不需要e.getMessage(),直接打印出来即可
e.getMessage()只能打印简短的信息,如果需要堆栈信息,还需加上 e
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logger.error("FinancingManualFacadeImpl.addFinancingProduct failed! ", e);
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作者:sayok_why
来源:优快云
原文:https://blog.youkuaiyun.com/sayoko06/article/details/79315348
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