项目在myeclipse自带的tomcat能启动，在tomcat7下启动不了

路口xia车 2017-03-24 02:22:21

一段获得mac的代码
项目在myeclipse自带的tomcat能启动，在tomcat7下启动不了

其实是启动的了，但是localhost 打开没东西。

下面是代码：很简单
jsp:

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"
import="cch.*"
%>

<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML> <HEAD> <TITLE>WMI Scripting HTML </TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.2800.1106" name=GENERATOR> </HEAD>
<BODY>
<%
String smac = "";
String sip = request.getHeader("x-forwarded-for");
if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) {
sip = request.getHeader("Proxy-Client-IP");
}
if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) {
sip = request.getHeader("WL-Proxy-Client-IP");
}
if(sip == null || sip.length() == 0 || "unknown".equalsIgnoreCase(sip)) {
sip = request.getRemoteAddr();
}
UdpGetClientMacAddr umac = new UdpGetClientMacAddr(sip);
smac = umac.GetRemoteMacAddr();
%>
<input value=<%=smac %> name="userMacAddr" size="20" style="width:150px" readonly="yes">

</BODY>
</HTML>

java:

package cch;
import java.io.*;
import java.net.*;
public class UdpGetClientMacAddr {
private String sRemoteAddr;
private int iRemotePort=137;
private byte[] buffer = new byte[1024];
private DatagramSocket ds=null;

public UdpGetClientMacAddr(String strAddr) throws Exception{
sRemoteAddr = strAddr;
ds = new DatagramSocket();
}

protected final DatagramPacket send(final byte[] bytes) throws IOException {
DatagramPacket dp = new DatagramPacket(bytes,bytes.length,InetAddress.getByName(sRemoteAddr),iRemotePort);
ds.send(dp);
return dp;
}

protected final DatagramPacket receive() throws Exception {
DatagramPacket dp = new DatagramPacket(buffer,buffer.length);
ds.receive(dp);
return dp;
}

protected byte[] GetQueryCmd() throws Exception {
byte[] t_ns = new byte[50];
t_ns[0] = 0x00;
t_ns[1] = 0x00;
t_ns[2] = 0x00;
t_ns[3] = 0x10;
t_ns[4] = 0x00;
t_ns[5] = 0x01;
t_ns[6] = 0x00;
t_ns[7] = 0x00;
t_ns[8] = 0x00;
t_ns[9] = 0x00;
t_ns[10] = 0x00;
t_ns[11] = 0x00;
t_ns[12] = 0x20;
t_ns[13] = 0x43;
t_ns[14] = 0x4B;

for(int i = 15; i < 45; i++)
{
t_ns[i] = 0x41;
}

t_ns[45] = 0x00;
t_ns[46] = 0x00;
t_ns[47] = 0x21;
t_ns[48] = 0x00;
t_ns[49] = 0x01;
return t_ns;
}

protected final String GetMacAddr(byte[] brevdata) throws Exception {

int i = brevdata[56] * 18 + 56;
String sAddr="";
StringBuffer sb = new StringBuffer(17);

for(int j = 1; j < 7;j++)
{
sAddr = Integer.toHexString(0xFF & brevdata[i+j]);
if(sAddr.length() < 2)
{
sb.append(0);
}
sb.append(sAddr.toUpperCase());
if(j < 6) sb.append(':');
}
return sb.toString();
}

public final void close() {
try
{
ds.close();
}
catch (Exception ex){
ex.printStackTrace();
}
}

public final String GetRemoteMacAddr() throws Exception {
byte[] bqcmd = GetQueryCmd();
send(bqcmd);
DatagramPacket dp = receive();
String smac = GetMacAddr(dp.getData());
close();

return smac;
}
}

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ja_rome 2017-03-25

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引用 6 楼 shuihuaxiang 的回复:

[quote=引用 3 楼 jlh912008548 的回复:] 1.看下配置的tomcat 配置是否正确 2.看下tomcat日志，一般日志里会有错误说明

tomcat7 跑其他的都可以就是加了这个类不行了主要就是UdpGetClientMacAddr 这个类这个在tomcat7 跑不起你可以试试。。myeclipse自带的tomcat能跑起也能发布，搞不懂原因 [/quote] 页面或者日志都没报任何错误吗？

ja_rome 2017-03-24

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1.看下配置的tomcat 配置是否正确 2.看下tomcat日志，一般日志里会有错误说明

Defonds 2017-03-24

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1、检查是否文件访问权限问题； 2、检查 tomcat 日志是否有异常

tianfang 2017-03-24

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怎么测试的？在tomcat7中怎么发布的？ war包用压缩软件解压缩，看看文件是否都在？

tianfang 2017-03-24

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代码太幼稚了


import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;

public class GetClientMacAddr {
	static int iRemotePort = 137;

	static byte[] msg = { 0x00, 0x00, 0x00, 0x10, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x43, 0x4B,

			0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
			0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,

			0x00, 0x00, 0x21, 0x00, 0x01 };

	public String GetRemoteMacAddr(String sRemoteAddr) {
		byte[] buffer = new byte[1024];
		StringBuffer sb = new StringBuffer(17);
		DatagramSocket ds = null;
		try {
			ds = new DatagramSocket();
			DatagramPacket dps = new DatagramPacket(msg, msg.length, InetAddress.getByName(sRemoteAddr), iRemotePort);
			ds.send(dps);
			DatagramPacket dpr = new DatagramPacket(buffer, buffer.length);
			ds.receive(dpr);

			byte[] brevdata = dpr.getData();

			int i = brevdata[56] * 18 + 56;
			String sAddr = "";

			for (int j = 1; j < 7; j++) {
				sAddr = Integer.toHexString(0xFF & brevdata[i + j]);
				if (sAddr.length() < 2) {
					sb.append(0);
				}
				sb.append(sAddr.toUpperCase());
				if (j < 6)
					sb.append(':');
			}
			return sb.toString();

		} catch (SocketException e) {
			// Exception in new DatagramSocket();
			e.printStackTrace();
		} catch (UnknownHostException e) {
			// Exception in dgs
			e.printStackTrace();
		} catch (IOException e) {
			// Exception send & receive
			e.printStackTrace();
		} finally {
			if (ds != null) {
				ds.close();
			}
		}

		return "";
	}
}

局部变量，不用搞成为类属性； cmd数据是不变的，写成数组初值，使用赋值语句太浪费 GetRemoteMacAddr写成一个函数足够小，分成多个无法做异常处理，e.printStackTrace();可以替换为日志输出或临时的控制台输出。还有一个超时异常没有处理取消了增加的构造函数

路口xia车 2017-03-24