Java Exception 打印详细信息到日志

public static String getExceptionMessage(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();
}