Page Comparison

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    <MetadataProvider id="HTTPMetadata"
         xsi:type="FileBackedHTTPMetadataProvider"
         backingFile="/opt/shibboleth-idp/metadata/carsifed-metadata.xml"
         minRefreshDelay="PT5M"
         maxRefreshDelay="PT10M"
         metadataURL="https://www.carsi.edu.cn/carsimetadata/carsifed-metadata.xml">
        <MetadataFilter xsi:type="SignatureValidation" certificateFile="/opt/shibboleth-idp/credentials/dsmeta.pem" />
        <MetadataFilter xsi:type="EntityRoleWhiteList">
            <RetainedRole>md:SPSSODescriptor</RetainedRole>
        </MetadataFilter>

        <MetadataFilter xsi:type="Algorithm">
                <!-- CBC-only SPs. -->
                <md:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#aes128-cbc" />
               <Entity><https://sp entity id1</Entity>
<Entity><https://sp entity id2</Entity>
        </MetadataFilter>

   </MetadataProvider>

20. IdP安装配置时，预上线环境测试显示登陆成功，但释放属性部分显示为空，这个一般是什么原因？

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1. 查看idp-process.log， 检查是否有以下错误：
   2022-07-15 11:31:29,165 - 192.168.xx.xxx - ERROR [org.jasig.cas.client.util.CommonUtils:439] - SSL error getting response from host: cas-pass.XXXX.edu.cn : Error Message: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
   javax.net.ssl.SSLException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
   at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:133)
   Caused by: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
   at java.base/sun.security.validator.PKIXValidator.<init>(PKIXValidator.java:102)
   Caused by: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
   at java.base/java.security.cert.PKIXParameters.setTrustAnchors(PKIXParameters.java:200)
   2022-07-15 11:31:29,166 - 192.168.70.235 - ERROR [net.unicon.idp.externalauth.ShibcasAuthServlet:111] - Ticket validation failed, returning InvalidTicket
   java.lang.RuntimeException: javax.net.ssl.SSLException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
   at org.jasig.cas.client.util.CommonUtils.getResponseFromServer(CommonUtils.java:440)
   

2. 如果有以上错误，请检查CAS认证服务网站数字证书，通常因其证书不完善导致报错。

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