用snmp4j实现的agent,代码比较多,但是很值得一看,尤其是对于要用SNMP监控信息的编程者,可以仔细研究一下里面的代码.-Achieved with snmp4j agent, code more,-Snmp4j achieved by agent, code more, but is worth a visit, especially for programmers to use SNMP to monitor the inf