用java怎样下载需要需要输入验证信息的web页面

还不明白的话就去百度或GOOGLE查httpclient实现登陆

如果谁有其他的办法也说说哇~ 学习ing

接着昨天的话题，我用了httpclient 来解决我的问题，可是现在又遇到了一个新问题，就是无法找到cookie代码如下：
package DAO;
import org.apache.commons.httpclient.*;import org.apache.commons.httpclient.cookie.*;import org.apache.commons.httpclient.methods.*;
/*** 用来演示登录表单的示例* @author Liudong*/public class FormLogin{
    static final String LOGON_SITE = "localhost";    static final int    LOGON_PORT = 8080;        public static void main(String[] args) throws Exception{        HttpClient client = new HttpClient();        client.getHostConfiguration().setHost(LOGON_SITE, LOGON_PORT);              //模拟登录页面login.jsp->main.jsp
        String url1 = "http://xt.dhcc.com.cn";
        String url2 = "http://xt.dhcc.com.cn/login3.do?version=jigang2006";        PostMethod post = new PostMethod(url1);        NameValuePair name = new NameValuePair("userid", "yangguangwg");             NameValuePair pass = new NameValuePair("password", "mypassword");             post.setRequestBody(new NameValuePair[]{name,pass});        int status = client.executeMethod(post);

        System.out.println(post.getStatusCode());        System.out.println(status);

        System.out.println(post.getResponseBodyAsString());        post.releaseConnection();               //查看cookie信息

        CookieSpec cookiespec = CookiePolicy.getDefaultSpec();
                Cookie[] cookies = cookiespec.match(LOGON_SITE, LOGON_PORT, "/", false, client.getState().getCookies());       if (cookies.length == 0) {           System.out.println("None");           } else {           for (int i = 0; i < cookies.length; i++) {               System.out.println(cookies[i].toString());               }       }       //访问所需的页面main2.jsp        GetMethod get = new GetMethod(url2);        client.executeMethod(get);        System.out.println(get.getResponseBodyAsString());        get.releaseConnection();    }}输出结果是：
200
200
<html>
<head>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="0"><title>（正式库）东华协同办公管理平台 2007  北京东华合创数码科技股份有限公司 Copyright [email protected] (build 2008年九月28日 04时18分00秒 )</title>
<link href="scheme/style.css" rel="stylesheet" type="text/css">
<script language="javascript">
function String.prototype.Trim(){return this.replace(/(^\s*)|(\s*$)/g,"");}
function String.prototype.Ltrim(){return this.replace(/(^\s*)/g, "");}
function String.prototype.Rtrim(){return this.replace(/(\s*$)/g, "");}function login(){
var u = document.loginForm.userid.value;
var p = document.loginForm.password.value;
if(u.Trim()==""){
   alert("请填写用户名");
   document.forms[0].userid.focus();document.forms[0].userid.select()
   return false;
}
if(p.Trim()==""){
alert("请填写密码");
document.forms[0].password.focus();document.forms[0].password.select()
return false;
}
return true;
}
</script><script language="javascript">
var strVersion=clientInformation.appVersion;
var strMsie="MSIE";
if (window.clientInformation.userAgent.indexOf( "MSIE " ) > 0)
        {
        // The browser is Microsoft Internet Explorer.
                var nFindMsie=strVersion.search(strMsie);
                nFindMsie=strVersion.substring(nFindMsie+6,nFindMsie+4);                if(nFindMsie < 6)
                {
                        alert("浏览器版本太低，要求至少IE6.0及以上版本");
                        window.open("help/help.jsp?helpid=env","_top")
                }
        }
else
        alert("系统不支持该浏览版本，请使用 Microsoft Internet Explorer6.0及以上版本");
</script>
</head><body onLoad="document.forms[0].userid.focus();document.forms[0].userid.select()" background="scheme/images/loginbj01.gif" topmargin="108">
<span id="d3" style="position=absolute;visibility=visible; z-index=10;left:10px;top:10px">
<div STYLE="font-size:14pt;color:red">
<p></p>
</div></span>
<table width="602" border="0" align="center" cellpadding="0" cellspacing="0">
  <tr>
    <td><img src="scheme/images/login01.gif" width="602" height="82"></td>
  </tr>
  <tr>
    <td><img src="scheme/images/login02.gif" width="602" height="56"></td>
  </tr>
    <form name="loginForm" action="login3.do?version=jigang2006" method="post" target="_self">

  <tr>
    <td height="166" align="center" valign="top" background="scheme/images/login03.gif"><table width="260" border="0" cellspacing="0" cellpadding="0">
        <tr>
          <td colspan="2" align="right"> </td>
        </tr>
        <tr>
          <td width="27%" height="40" align="right" nowrap>用户名：</td>
          <td width="73%"><input name="userid" id="userid"  nextelemid="password"  type="text" class="inputlogin"></td>
        </tr>
        <tr>
          <td height="40" align="right" nowrap>密　码：</td>
          <td><input name="password" id="password"  nextelemid="recogcode" onKeyPress="if(event.keyCode==13) return login()" type="password" class="inputlogin"></td>
        </tr>
        <tr>
          <td height="40" align="right" nowrap>识别码：</td>
          <td><input name="recogcode" id="recogcode"  nextelemid="submitbut" onKeyPress="if(event.keyCode==13) return login()" type="password" class="inputlogin"></td>
        </tr>
        <tr>
          <td colspan=2 align=center><input id=submitbut type="submit" class="button" value=" 登  录 " >    <input id=button33 type="button" class="button" value="取回密码" onClick="window.open('rpassword.html','_new','scroll=no,scrollbars=yes,status=no,help=no,resizable=no,left='+(screen.availWidth/2-600)+',top='+(screen.availHeight/2-110)+',width=300,height=220')"></td>
        </tr>
      </table></td>  </tr>
     </form>
  <tr>
    <td><img src="scheme/images/login05.gif" width="602" height="74"></td>
  </tr>
</table>
<br>
<div align=center class=logintext><table width="602" border="0" align="center" cellpadding="0" cellspacing="0"><tr><td align='left'>1、需要用IE6.0或6.0以上的浏览器，不支持腾讯TT和Firefox；<br>2、如有问题，请联系史海兵，联系方式：62662382；<br>3、平台永久域名 http://xt.dhcc.com.cn/。</td></tr></table></div>
<script type="text/javascript" src="http://js.tongji.cn.yahoo.com/632588/ystat.js"></script><noscript><a href="http://tongji.cn.yahoo.com"><img src="http://img.tongji.cn.yahoo.com/632588/ystat.gif"></a></noscript>
</body>
</html>None<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta http-equiv="Pragma" content="no-cache">
<title>东华业务平台</title>
<link href="scheme/style.css" rel="stylesheet" type="text/css">
<script language="javascript">   function tipclick(){ window.close();   }</script>
</head><body bgcolor="#F8F8F8" leftmargin="20" topmargin="50">
<table width="98%" border="0" align="center" cellpadding="0" cellspacing="1" >
  <tr>
    <td height="100" align="center" nowrap class="TDstyle03"> <p><br>没有此用户或密码不正确!  <a href="./"> 重新登录点击这里 </a><br>
        <br>
        <br>
       <input type="button" onclick="tipclick();" name="tip" value="关闭" class="button">
        <br>
      </p></td>
  </tr>
</table>
</body>
</html>
高手指教下，在线等~~

将需要的用户名、密码存到一个xml文档，下载之前读取xml文档中的用户名、密码，然后让程序用这个用户名、密码登陆系统B，然后再执行下载

我猜你用的是程序模拟登陆不是用浏览器登陆这样客户端不会有Cookies
我去模拟登陆Facebook的时候发现提示需要客户端支持Cookie

调试易

用java怎样下载需要需要输入验证信息的web页面

解决方案 »