异常信息处理，精准错误定位

 

这样在日志里可以更快速的定位

 

将错误信息输出到日志里

 

 

public static void main(String[] args) {  
        try {  
            String aa = "";  
            System.out.println(aa.substring(3));  
  
        } catch (Exception e) {  
            e.printStackTrace();  
            StringWriter sw = new StringWriter();  
            e.printStackTrace(new PrintWriter(sw, true));  
            String str = sw.toString();  
           LogDispatcher.info(WayBillService, "[异常] printStackTrace 信息" + str);

            System.out.println("==========");  
  
            System.out.println(str);  
        }  
    }