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Question

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PKIX path building failed: unable to find valid certification path to requested target

有效证书路径我有一个问题。已经很久没有挣扎了。 这是我的代码：

package com.XYZ.spr.server; 

import org.apache.commons.mail.Email; 
import org.apache.commons.mail.SimpleEmail; 

public class GeneratorMaili { 
    public static final String HOSTNAME = "smtp.XYZ.com"; 
    public static final String ADDRESS_FROM = "user@XYZ.com"; 
    public static final String TOPIC= "Topic"; 

    public static void wyslijEmail(String reciver) throws Exception { 
     System.setProperty("javax.net.ssl.trustStore", "cacerts"); 
     System.setProperty("javax.net.ssl.trustStorePassword", "changeit"); 
     Email email = new SimpleEmail(); 
     email.setSmtpPort(587); 
//  email.setTLS(true); 
     email.setSSL(true); 
     System.out.println("fdfdf"); 
     email.setAuthentication("user@.XYZ.pl", "pass"); 
     email.setDebug(true); 
     email.setHostName(HOSTNAME); 
     email.setFrom(ADDRESS_FROM); 
     email.setSubject(TOPIC); 
     email.setMsg("Test"); 
     email.addTo(reciver); 
     System.out.println(reciver); 
     email.send(); 
     System.out.println("Ok!"); 
    } 
} 

我有证书问题。 下面是我做的步骤：

1. 我用我的浏览器有下载证书，我已经保存为cert.cer
2. 我用这个命令：keytool的-import -keystore -trustcacerts cacerts -storepass changeit -noprompt -file cert.cer
3. 我使用GWT，所以我复制cacerts到我的WEB-INF文件夹。

不幸的是，越来越仍然收到此错误：

DEBUG SMTP: exception reading response: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 
org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.XYZ.com:587 
    at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1242) 
    at org.apache.commons.mail.Email.send(Email.java:1267) 
    at com.XYZ.spr.server.GeneratorMaili.wyslijEmail(GeneratorMaili.java:28) 
    at com.XYZ.spr.server.SprawozdaniaServiceImpl.addSprawozdanie(SprawozdaniaServiceImpl.java:123) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:569) 
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208) 
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248) 
    at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) 
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362) 
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) 
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) 
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729) 
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) 
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 
    at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49) 
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 
    at org.mortbay.jetty.Server.handle(Server.java:324) 
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505) 
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843) 
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647) 
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:205) 
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380) 
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395) 
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488) 
Caused by: javax.mail.MessagingException: Exception reading response; 
    nested exception is: 
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 
    at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:1611) 
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1369) 
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:412) 
    at javax.mail.Service.connect(Service.java:310) 
    at javax.mail.Service.connect(Service.java:169) 
    at javax.mail.Service.connect(Service.java:118) 
    at javax.mail.Transport.send0(Transport.java:188) 
    at javax.mail.Transport.send(Transport.java:118) 
    at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1232) 
    ... 30 more 
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 
    at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readDataRecord(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.AppInputStream.read(Unknown Source) 
    at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:110) 
    at java.io.BufferedInputStream.fill(Unknown Source) 
    at java.io.BufferedInputStream.read(Unknown Source) 
    at com.sun.mail.util.LineInputStream.readLine(LineInputStream.java:88) 
    at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:1589) 
    ... 38 more 
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 
    at sun.security.validator.PKIXValidator.doBuild(Unknown Source) 
    at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) 
    at sun.security.validator.Validator.validate(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.validate(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) 
    ... 51 more 
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 
    at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) 
    at java.security.cert.CertPathBuilder.build(Unknown Source) 
    ... 57 more 

Answer 1

I use GWT, so I copied cacerts to my WEB-INF folder.

使用未加载javax.net.ssl.trustStore财产使用的类加载器，从而将其放置在类路径中的Java信任库指定的无轴承上结果。您需要在调用System.setProperty时指定信任库的绝对路径。