java Exception 出错的栈信息打印到日志中 打印堆栈信息

public static String errInfo(Exception e) {StringWriter sw = null;PrintWriter pw = null;try {sw = new StringWriter();pw = new PrintWriter(sw);// 将出错的栈信息输出到printWriter中e.printStackTrace(pw);pw.flush();sw.flush();} finally {if (sw != null) {try {sw.close();} catch (IOException e1) {e1.printStackTrace();}}if (pw != null) {pw.close();}}return sw.toString();}

e.getMessage(); 只会获得具体的异常名称. 比如说NullPoint 空指针,就告诉你说是空指针... e.printStackTrace();会打出详细异常,异常名称,出错位置,便于调试用..