一 利用log4j：
在catch加入：
logger.error("oops, got an exception: ", e);
二 自己自定义类：
public class StackTraceToString {
/**
* @param args
*/
public static void main(String[] args) {
try{
System.out.println(args[0]);
}catch(Exception e){
System.out.println(e.getMessage());
System.out.println("xxxxxxxxxxxxx");
System.out.println(getExceptionTrace(e));
}
}
public static String getExceptionTrace(Throwable e){
if(e!=null){
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
e.printStackTrace(pw);
pw.flush();
pw.close();
return sw.toString();
}else{
String result = "No Exception";
return result;
}
}
}