得到异常详细信息

//得到Exception 的详细信息
    public static String errorException(Exception e) {
    StringBuffer sb = new StringBuffer();
StackTraceElement[] trace = e.getStackTrace();
for (StackTraceElement s : trace) {
sb.append("--Class: ").append(s.getClassName());
sb.append("--Method: ").append(s.getMethodName());
sb.append("--Line: ").append(s.getLineNumber());
sb.append("--exceptionType:  ").append(e.toString()).append("\n");
}
System.out.println(sb.toString().length() + " ----------------------------------------");
return sb.toString();
    }
    /**
     * 得到Exception 的详细信息
     * @param t
     * @return
     */
    public static String getTrace(Throwable t) {
        StringWriter stringWriter= new StringWriter();
        PrintWriter writer= new PrintWriter(stringWriter);
        t.printStackTrace(writer);
        StringBuffer buffer= stringWriter.getBuffer();
        return buffer.toString();
    }