调用IBM bluepage进行LDAP用户认证报证书错误，不知道啥原因

本项目是IBM内部项目，登录时采用Bluepage进行用户密码检验，在Tomcat下面可以正常工作，但是移植到Websphere ND8上之后，报错：
2012-09-02 11:55:59,254 [com.gts.system.login.controller.LoginAction:40]-[ERROR] Login Error
   com.ibm.IBMLookupException: Error authenticating jieren@cn.ibm.com
at com.ibm.IBM.authenticate(IBM.java:135)
at com.ibm.IBM.authenticate(IBM.java:117)
at com.gts.util.BluepageUtil.authenticate(BluepageUtil.java:36)
at com.gts.system.login.controller.LoginAction.login(LoginAction.java:99)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:611)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:237)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1201)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:595)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1147)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:722)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:449)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:125)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:92)
at com.greatwe.jccp.framework.fillter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:39)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:192)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:89)
at com.greatwe.jccp.framework.fillter.CloseTransactionInViewFilter.doFilter(CloseTransactionInViewFilter.java:41)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:192)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:89)
at com.greatwe.jccp.framework.filter.SessionOutFilter.doFilter(SessionOutFilter.java:70)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:192)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:89)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:919)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1016)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3639)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:304)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:950)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1659)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1648)
Caused by: javax.naming.CommunicationException: simple bind failed: bluepages.ibm.com:636 [Root exception is javax.net.ssl.SSLHandshakeException: com.ibm.jsse2.util.g: PKIX path building failed: java.security.cert.CertPathBuilderException: PKIXCertPathBuilderImpl could not build a valid CertPath.; internal cause is:
java.security.cert.CertPathValidatorException: The certificate issued by OU=Class 3 Public Primary Certification Authority, O="VeriSign, Inc.", C=US is not trusted; internal cause is:
java.security.cert.CertPathValidatorException: Certificate chaining error]
at com.sun.jndi.ldap.LdapClient.authenticate(LdapClient.java:209)
at com.sun.jndi.ldap.LdapCtx.connect(LdapCtx.java:2706)
at com.sun.jndi.ldap.LdapCtx.(LdapCtx.java:305)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(LdapCtxFactory.java:187)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(LdapCtxFactory.java:205)
at com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(LdapCtxFactory.java:148)
at com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(LdapCtxFactory.java:78)
at org.apache.aries.jndi.ContextHelper.getInitialContextUsingBuilder(ContextHelper.java:214)
at org.apache.aries.jndi.ContextHelper.doGetContextProvider(ContextHelper.java:189)
at org.apache.aries.jndi.ContextHelper.access$100(ContextHelper.java:41)
at org.apache.aries.jndi.ContextHelper$2.run(ContextHelper.java:138)
at org.apache.aries.jndi.ContextHelper$2.run(ContextHelper.java:136)
at java.security.AccessController.doPrivileged(AccessController.java:254)
at org.apache.aries.jndi.Utils.doPrivilegedNaming(Utils.java:154)
at org.apache.aries.jndi.ContextHelper.getContextProvider(ContextHelper.java:136)
at org.apache.aries.jndi.ContextHelper.getInitialContext(ContextHelper.java:119)
at org.apache.aries.jndi.OSGiInitialContextFactoryBuilder.getInitialContext(OSGiInitialContextFactoryBuilder.java:49)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:220)
at javax.naming.InitialContext.initializeDefaultInitCtx(InitialContext.java:313)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:343)
at javax.naming.InitialContext.internalInit(InitialContext.java:281)
at javax.naming.InitialContext.(InitialContext.java:206)
at javax.naming.directory.InitialDirContext.(InitialDirContext.java:86)
at com.ibm.bluepages.Bluepages.searchByEmail(Bluepages.java:269)
at com.ibm.bluepages.Bluepages.authenticate(Bluepages.java:63)
at com.ibm.bluepages.Bluepages.authenticate(Bluepages.java:31)
at com.ibm.IBM.authenticate(IBM.java:133)
... 49 more
Caused by: javax.net.ssl.SSLHandshakeException: com.ibm.jsse2.util.g: PKIX path building failed: java.security.cert.CertPathBuilderException: PKIXCertPathBuilderImpl could not build a valid CertPath.; internal cause is:
java.security.cert.CertPathValidatorException: The certificate issued by OU=Class 3 Public Primary Certification Authority, O="VeriSign, Inc.", C=US is not trusted; internal cause is:
java.security.cert.CertPathValidatorException: Certificate chaining error
at com.ibm.jsse2.n.a(n.java:28)
at com.ibm.jsse2.tc.a(tc.java:251)
at com.ibm.jsse2.gb.a(gb.java:251)
at com.ibm.jsse2.gb.a(gb.java:228)
at com.ibm.jsse2.hb.a(hb.java:279)
at com.ibm.jsse2.hb.a(hb.java:292)
at com.ibm.jsse2.gb.n(gb.java:71)
at com.ibm.jsse2.gb.a(gb.java:324)
at com.ibm.jsse2.tc.a(tc.java:559)
at com.ibm.jsse2.tc.g(tc.java:25)
at com.ibm.jsse2.tc.a(tc.java:407)
at com.ibm.jsse2.j.write(j.java:11)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:76)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:134)
at com.sun.jndi.ldap.Connection.writeRequest(Connection.java:408)
at com.sun.jndi.ldap.LdapClient.ldapBind(LdapClient.java:346)
at com.sun.jndi.ldap.LdapClient.authenticate(LdapClient.java:204)
... 75 more
Caused by: com.ibm.jsse2.util.g: PKIX path building failed: java.security.cert.CertPathBuilderException: PKIXCertPathBuilderImpl could not build a valid CertPath.; internal cause is:
java.security.cert.CertPathValidatorException: The certificate issued by OU=Class 3 Public Primary Certification Authority, O="VeriSign, Inc.", C=US is not trusted; internal cause is:
java.security.cert.CertPathValidatorException: Certificate chaining error
at com.ibm.jsse2.util.e.b(e.java:30)
at com.ibm.jsse2.util.e.b(e.java:62)
at com.ibm.jsse2.util.d.a(d.java:11)
at com.ibm.jsse2.hc.a(hc.java:40)
at com.ibm.jsse2.hc.checkServerTrusted(hc.java:33)
at com.ibm.ws.ssl.core.WSX509TrustManager.checkServerTrusted(WSX509TrustManager.java:358)
at com.ibm.jsse2.hb.a(hb.java:175)
... 87 more
Caused by: java.security.cert.CertPathBuilderException: PKIXCertPathBuilderImpl could not build a valid CertPath.; internal cause is:
java.security.cert.CertPathValidatorException: The certificate issued by OU=Class 3 Public Primary Certification Authority, O="VeriSign, Inc.", C=US is not trusted; internal cause is:
java.security.cert.CertPathValidatorException: Certificate chaining error
at com.ibm.security.cert.PKIXCertPathBuilderImpl.engineBuild(PKIXCertPathBuilderImpl.java:411)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:258)
at com.ibm.jsse2.util.e.b(e.java:103)
... 93 more
Caused by: java.security.cert.CertPathValidatorException: The certificate issued by OU=Class 3 Public Primary Certification Authority, O="VeriSign, Inc.", C=US is not trusted; internal cause is:
java.security.cert.CertPathValidatorException: Certificate chaining error
at com.ibm.security.cert.BasicChecker.(BasicChecker.java:111)
at com.ibm.security.cert.PKIXCertPathValidatorImpl.engineValidate(PKIXCertPathValidatorImpl.java:176)
at com.ibm.security.cert.PKIXCertPathBuilderImpl.myValidator(PKIXCertPathBuilderImpl.java:737)
at com.ibm.security.cert.PKIXCertPathBuilderImpl.buildCertPath(PKIXCertPathBuilderImpl.java:649)
at com.ibm.security.cert.PKIXCertPathBuilderImpl.buildCertPath(PKIXCertPathBuilderImpl.java:595)
at com.ibm.security.cert.PKIXCertPathBuilderImpl.buildCertPath(PKIXCertPathBuilderImpl.java:595)
at com.ibm.security.cert.PKIXCertPathBuilderImpl.buildCertPath(PKIXCertPathBuilderImpl.java:595)
at com.ibm.security.cert.PKIXCertPathBuilderImpl.engineBuild(PKIXCertPathBuilderImpl.java:357)
... 95 more
Caused by: java.security.cert.CertPathValidatorException: Certificate chaining error
at com.ibm.security.cert.CertPathUtil.findIssuer(CertPathUtil.java:298)
at com.ibm.security.cert.BasicChecker.(BasicChecker.java:108)