//截取前300个字符,将异常信息存入数据库时避免超出数据库字段长度范围
public static String getE(Exception e) {
String s = getStackTraceInfo(e);
if (s.length()>=300) {
return s.substring(0, 300);
}
return s;
}
/**
* 获取e.printStackTrace() 的具体信息,赋值给String 变量,并返回
*
* @param e
* Exception
* @return e.printStackTrace() 中 的信息
*/
public static String getStackTraceInfo(Exception e) {
StringWriter sw = null;
PrintWriter pw = null;
try {
sw = new StringWriter();
pw = new PrintWriter(sw);
e.printStackTrace(pw);//将出错的栈信息输出到printWriter中
pw.flush();
sw.flush();
return sw.toString();
} catch (Exception ex) {
return "发生错误";
} finally {
if (sw != null) {
try {
sw.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
if (pw != null) {
pw.close();
}
}
}