java,javascript 内连取数据

pengx 2008-06-25

展开全文

java 内连

            //用 java jdk URL
            URL httpurl = new URL(url);
            HttpURLConnection httpConn = null;
            httpConn = (HttpURLConnection) httpurl.openConnection();
            httpConn.setRequestMethod("POST");
            httpConn.setDoOutput(true);
            httpConn.setDoInput(true);
          //正式连接
            httpConn.getOutputStream();
            byte[] bb = new byte[httpConn.getInputStream().available()];
            httpConn.getInputStream().read(bb);
            //取得数据
            String str = new String(bb);

javascript 现在这种取法有个名字叫（ajax）(转)

<html>
<head>
<link href="http://www./css/index.css" rel="stylesheet" type="text/css">
<link rel="stylesheet" href="http://www./css/framework.css" type="text/css"/>
<script language="javascript">

window.onload = function()
{
  CreateDateSelect();
}

var xmlHttp = false;
var e;

//创建XMLHTTP对象
function getXMLHTTPObj()
{
  var C = null;
  try
  {
     C = new ActiveXObject("Msxml2.XMLHTTP");
  }
  catch(e)
  {
   try
   {
    C = new ActiveXObject("Microsoft.XMLHTTP");
   }
   catch(sc)
   {
    C = null;
   }
  }

  if( !C && typeof XMLHttpRequest != "undefined" )
  {
   C = new XMLHttpRequest();
  }

  return C;
}

//调用远程方法
function callServer(e)
{
  try
  {
   if( xmlHttp && xmlHttp .readyState != 0 )
   {
    xmlHttp.abort();
   }

   xmlHttp = getXMLHTTPObj();

   if( xmlHttp )
   {
    document.getElementById("outgroup").style.display = "none";
    //获取查询日期
    var dateSele = e.options[e.selectedIndex].value;
    document.getElementById("date").innerHTML = dateSele + " 开放式基金净值";

    //构造查询连接字符串
    var url = "https://www.google.com/accounts/ManageAccount";

    //打开连接
   if(navigator.appName == ‘Netscape‘){
   try {
    netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead");
   } catch (e) {
       alert("Permission UniversalBrowserRead denied.");
   }}
    xmlHttp.open("GET", url, true);
    //设置回调函数
    xmlHttp.onreadystatechange = updatePage;
    //发送请求
    xmlHttp.send(null);
   }
   else
   {
    document.getElementById("flag").innerHTML = "XMLHTTP对象创建失败";
   }
  }
  catch (e)
  {
   document.getElementById("flag").innerHTML = "查询错误:" + e;
  }
}

//回调处理函数
function updatePage()
{
  try {
   if (xmlHttp.readyState == 1)
   {
    document.getElementById("flag").innerHTML = "正在加载连接对象

";
   }

   if (xmlHttp.readyState == 2)
   {
    document.getElementById("flag").innerHTML = "连接对象加载完毕。";
   }

   if (xmlHttp.readyState == 3)
   {
    document.getElementById("flag").innerHTML = "数据获取中

";
   }

   if (xmlHttp.readyState == 4)
   {
    var response = xmlHttp.responseText;
    document.getElementById("out").innerHTML = response;
    document.getElementById("outgroup").style.display = "";
   }
  }
  catch (e)
  {
      document.getElementById("flag").innerHTML = "回调处理错误:" + e;
  }
}

//创建日期选择下拉框
function CreateDateSelect()
{

  var html = [];

  for(var iYear=2005; iYear<=2006; iYear ++)
  {
   for( var iMonth=1; iMonth<=12; iMonth ++ )
   {
    for( var iDay=1; iDay<=31; iDay ++ )
    {
    html[html.length] = "<option value=\""  + iYear + "\-" + iMonth + "\-" + iDay + "\">" + iYear + "年" + iMonth + "月" + iDay + "日" + "</option>";
    }
   }
  }

  document.getElementById("dateSele").innerHTML = "<select name=\"dateSele\" id=\"dateSele\" onchange=\"callServer(this);\">" + html.join("") + "</select>";
}
</script>