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本文不概述如何打印日志，本文概述如何将捕获的异常详细信息打印到日志进行输出，方便定位问题。

首先定义一个函数getTrace如下所示

public static String getTrace(Throwable t) {
    StringWriter stringWriter= new StringWriter();
    PrintWriter writer= new PrintWriter(stringWriter);
    t.printStackTrace(writer);
    StringBuffer buffer= stringWriter.getBuffer();
    return buffer.toString();
}

然后在catch 代码块中添加如下代码

try

{

XXXXX

}

catch(Exception e)

{

DEBUGGER.info(“开始捕获异常”);

DEBUGGER.fatal(“error info is:”+e.toString());

DEBUGGER.fatal(getTrace(e));

}