所以我试图通过这里给出的示例来使Cognos Mashup Service工作：https://www.ibm.com/communities/analytics/cognos-analytics-blog/how-to-use-ibm-10-2-2-cognos-mashup-service-cms-samples-in-ibm-cognos-analytics-11/
使用内部浏览器在Eclipse中运行时，应用程序实际上运行正常。但是，当我将默认的eclipse浏览器从内部更改为外部，如Firefox或Chrome时，我在连接时遇到CORS Access错误到Cognos 11：
阻止跨源请求：同源策略禁止在https://placeholder/ibmcognos/bi/v1/disp/rds/pagedReportData/report/i72BCF4B83AFE430F9A7F4721DF093FAB?fmt=HTMLFragment&selection=List1&rowLimit=2读取远程资源。 （原因：CORS标题'Access-Control-Allow-Origin'缺失）
根据我的理解，我需要将以下内容添加到我的服务器配置文件中：
<Location />
order allow,deny
allow from all
Header set Access-Control-Allow-Origin "*"
</Location>
但是，这只会导致404错误的无限循环。 那么我做错了什么，为什么内部eclipse浏览器有效？这是我的简单web应用程序html：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Generic Authentication Sample</title>
<script>
var myNameSpace=null;
var myUserName=null;
var myPassword=null;
try {
var objXHR = new XMLHttpRequest();
} catch (e) {
try {
alert('Msxml2.XMLHTTP');
var objXHR = new ActiveXObject('Msxml2.XMLHTTP');
} catch (e) {
try {
alert('Microsoft.XMLHTTP')
var objXHR = new ActiveXObject('Microsoft.XMLHTTP');
} catch (e) {
alert('XMLHttpRequest not supported'); }
}
}
function doReport()
{
myNameSpace=document.getElementById("nameSpace").value;
myUserName=document.getElementById("userName").value;
myPassword=document.getElementById("password").value;
var myReportID=document.getElementById("storeID").value;
var myFrag = document.getElementById("fragment");
if(myNameSpace==""||myUserName==""||myPassword=="")
{
myFrag.innerHTML="";
myFrag.innerHTML= "<HTML><BODY><b>Please enter Authentication information ....</b></BODY></HTML>";
return;
}
if(myReportID=="")
{
myFrag.innerHTML="";
myFrag.innerHTML= "<HTML><BODY><b>Please enter the Report ID ....</b></BODY></HTML>";
return;
}
var url = parent.settings.document.getElementById("serverURL").value + "/bi/v1/disp/rds/pagedReportData/report/" + document.getElementById("storeID").value;
window.status = "Loading Report. Please wait....";
var frag = document.getElementById("fragment");
frag.innerHTML= "<HTML><BODY>Loading Report. Please wait....</BODY></HTML>";
try
{
objXHR.open("GET", url, true);
objXHR.onreadystatechange = callBack;
objXHR.send(null);
}
catch (e)
{
alert("Error occurs when doing report.\r\n"+ e);
}
}
function doLogon()
{
var xmlData =
"xmlData=<auth:credentials xmlns:auth='http://developer.cognos.com/schemas/ccs/auth/types/1'>"
+"<auth:credentialElements><auth:name>CAMNamespace</auth:name>"
+"<auth:value><auth:actualValue>"+myNameSpace+"</auth:actualValue></auth:value></auth:credentialElements>"
+"<auth:credentialElements><auth:name>CAMUsername</auth:name>"
+"<auth:value><auth:actualValue>"+myUserName+"</auth:actualValue></auth:value></auth:credentialElements>"
+"<auth:credentialElements><auth:name>CAMPassword</auth:name>"
+"<auth:value><auth:actualValue>"+myPassword+"</auth:actualValue></auth:value></auth:credentialElements>"
+"</auth:credentials>";
try
{
var url = parent.settings.document.getElementById("serverURL").value + "/bi/v1/disp/rds/auth/logon";
objXHR.open("POST", url, false);
objXHR.setRequestHeader("Content-type","application/x-www-form-urlencoded");
objXHR.setRequestHeader("Content-length",xmlData.length);
objXHR.setRequestHeader("Connection","close");
objXHR.send(xmlData);
if(objXHR.status == 200)
{
// Processes the response from the CMS Authentication service.
// If we recieve an "accountInfo" element back, we have successfully logged in.
var accountInfo = objXHR.responseXML.getElementsByTagName("auth:accountInfo");
if (accountInfo.length > 0)
{
objXHR = new XMLHttpRequest(); //each request can only be opened once
doReport();
}
else
{
//Otherwise, prompt error message
alert("Error occurs when doing logon. Please check input credentials.");
return;
}
}
else
{
var url = parent.settings.document.getElementById("serverURL").value + "/bi/v1/disp/rds/auth/logon";
alert(url);
showError(objXHR.responseText);
window.status = "Done";
}
}
catch (e)
{
alert("Error occurs when doing logon.\r\n"+e);
}
}
function showError(msg)
{
var frag = document.getElementById("fragment");
frag.innerHTML= "Complete";
frag.style.visibility = "hidden";
frag = document.getElementById("error")
frag.innerHTML= msg;
frag.style.visibility = "visible";
}
function doLogoff()
{
try
{
objXHR.open("POST", parent.settings.document.getElementById("serverURL").value + "/bi/v1/disp/rds/auth/logoff", false);
objXHR.send(null);
checkLogoffStatus();
}
catch (e)
{
alert("Error occurs when doing logoff.\r\n"+e);
}
}
function checkLogoffStatus()
{
if(objXHR.readyState == 4 && objXHR.status == 200)
{
window.status = "Successfully log off IBM Cognos Service.";
alert("Successfully log off IBM Cognos Service.");
}
else
{
var frag = document.getElementById("fragment");
frag.innerHTML = objXHR.responseText;
alert("HTTP ERROR " + objXHR.status + ": " + objXHR.statusText);
window.status = "Done";
}
}
function callBack()
{
if (objXHR.readyState == 4)
{
if (objXHR.status == 200)
{
var frag = document.getElementById("fragment");
frag.innerHTML = objXHR.responseText;
window.status = "Done";
}
else if (objXHR.status == 403)
{
doLogon();
}
else
{
alert("CALLBACK HTTP ERROR " + objXHR.status);
window.status = "Done";
}
}
}
</script>
</head>
<body style="font-family: Verdana, Arial, Sans-Serif; font-weight: normal"><br />
<table align="center" width="95%"
style="border-bottom-style: solid; border-top-style: solid; border-left-color: #004080; border-top-color: #004080; border-right-color: #004080; border-left-style: solid; border-right-style: solid; border-bottom-color: #004080; border-bottom-width: thin; border-right-width: thin; border-left-width: thin; border-top-width: thin">
<thead>
<tr>
<td
style="text-align: center; color: #FFFFFF; font-weight: bold; background-color: #0080C0">CMS
Authentication Sample</td>
</tr>
</thead>
<tr>
<td>
<table width="100%">
<td align="left" width="60%">
Name Space: <input type="text" size="40", id="nameSpace" value="PLACEHOLDER"><br><br>
User Name: <input type="text" size="40", id="userName" value="PLACEHOLDER"><br><br>
Password: <input type="password" size="40", id="password" value="PLACEHOLDER"><br><br>
Report ID: <input size="40" id="storeID" value="PLACEHOLDER"><br><br>
</td>
<td align="left" width="40%">
<input type="submit" value="Report Output" onClick="doReport()"><br><br>
<input type="submit" id="logoff" value="Logoff from IBM Cognos Server" onclick="doLogoff()"><br>
</td>
</table>
</td>
</tr>
<tr>
<td
style="border-top-style: dashed; border-top-color: #000000; border-top-width: medium; border-bottom-style: dashed; border-bottom-width: medium; border-bottom-color: #000000"
height="100%">
<DIV id="fragment" style="height: 100%; width: 100%">Your report will appear here</DIV>
</td>
</tr>
</table>
</body>
</html>
答案 0 :(得分：0)
原因配置浏览器和Web服务器不允许CORS请求。
现代设计的浏览器和Web服务器发生此问题，与IBM Cognos产品无关。
这可以通过将请求的资源移动到同一个域或通过在Web服务器和浏览器中启用CORS =跨源资源共享来修复IE / IIS在浏览器/ Web服务器链中启用此功能，如果这在此处工作。
有关服务器和客户端的详细信息，请参阅：http://enable-cors.org。
对于浏览器，请检查浏览器支持网站，因为这很可能是内部设置。
关于CORS的一般信息：
http://en.wikipedia.org/wiki/Cross-origin_resource_sharing
参考：http://www-01.ibm.com/support/docview.wss?uid=swg21698830