我有一个类,将从https服务器下载文件。当我运行它时,它返回了很多错误。我的证书好像有问题。是否可以忽略客户机-服务器身份验证?如果有,怎么做?

package com.da;

import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.CharBuffer;
import java.util.concurrent.Future;

import org.apache.http.HttpResponse;
import org.apache.http.client.utils.URIUtils;
import org.apache.http.impl.nio.client.DefaultHttpAsyncClient;
import org.apache.http.nio.IOControl;
import org.apache.http.nio.client.HttpAsyncClient;
import org.apache.http.nio.client.methods.AsyncCharConsumer;
import org.apache.http.nio.client.methods.HttpAsyncGet;
import org.apache.http.nio.client.methods.HttpAsyncPost;

public class RSDDownloadFile {
    static FileOutputStream fos;

    public void DownloadFile(String URI, String Request) throws Exception
    {
        java.net.URI uri = URIUtils.createURI("https", "176.66.3.69:6443", -1, "download.aspx",
                "Lang=EN&AuthToken=package", null);
        System.out.println("URI Query: " + uri.toString());

        HttpAsyncClient httpclient = new DefaultHttpAsyncClient();
        httpclient.start();
        try {
            Future<Boolean> future = httpclient.execute(
                    new HttpAsyncGet(uri),
                    new ResponseCallback(), null);

            Boolean result = future.get();
            if (result != null && result.booleanValue()) {
                System.out.println("\nRequest successfully executed");
            } else {
                System.out.println("Request failed");
            }              
        } 
        catch(Exception e){
            System.out.println("[DownloadFile] Exception: " + e.getMessage());
        }
        finally {
            System.out.println("Shutting down");
            httpclient.shutdown();
        }
        System.out.println("Done");  

    }

    static class ResponseCallback extends AsyncCharConsumer<Boolean> {

        @Override
        protected void onResponseReceived(final HttpResponse response) {
             System.out.println("Response: " + response.getStatusLine());
             System.out.println("Header: " + response.toString());
             try {   
                 //if(response.getStatusLine().getStatusCode()==200)
                     fos = new FileOutputStream( "Response.html" );
             }catch(Exception e){
                 System.out.println("[onResponseReceived] Exception: " + e.getMessage());
             }
        }

        @Override
        protected void onCharReceived(final CharBuffer buf, final IOControl ioctrl) throws IOException {
            try
            {
                while (buf.hasRemaining()) 
                {
                    //System.out.print(buf.get());
                    fos.write(buf.get());
                }
            }catch(Exception e)
            {
                System.out.println("[onCharReceived] Exception: " + e.getMessage());
            }
        }

        @Override
        protected void onCleanup() {
            try
            {             
                if(fos!=null)
                    fos.close();
            }catch(Exception e){
                System.out.println("[onCleanup] Exception: " + e.getMessage());         
            }
             System.out.println("onCleanup()");
        }

        @Override
        protected Boolean buildResult() {
            return Boolean.TRUE;
        }

    }
}

错误:

URI Query: https://176.66.3.69:6443/download.aspx?Lang=EN&AuthToken=package
Aug 2, 2011 3:47:57 PM org.apache.http.impl.nio.client.NHttpClientProtocolHandler exception
SEVERE: I/O error: General SSLEngine problem
javax.net.ssl.SSLHandshakeException: General SSLEngine problem
    at com.sun.net.ssl.internal.ssl.Handshaker.checkThrown(Unknown Source)
    at com.sun.net.ssl.internal.ssl.SSLEngineImpl.checkTaskThrown(Unknown Source)
    at com.sun.net.ssl.internal.ssl.SSLEngineImpl.writeAppRecord(Unknown Source)
    at com.sun.net.ssl.internal.ssl.SSLEngineImpl.wrap(Unknown Source)
    at javax.net.ssl.SSLEngine.wrap(Unknown Source)
    at org.apache.http.impl.nio.reactor.SSLIOSession.doHandshake(SSLIOSession.java:154)
    at org.apache.http.impl.nio.reactor.SSLIOSession.isAppInputReady(SSLIOSession.java:276)
    at org.apache.http.impl.nio.client.InternalClientEventDispatch.inputReady(InternalClientEventDispatch.java:79)
    at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:161)
    at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:335)
    at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315)
    at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:275)
    at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
    at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:542)
    at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
    at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
    at com.sun.net.ssl.internal.ssl.SSLEngineImpl.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$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.net.ssl.internal.ssl.Handshaker$DelegatedTask.run(Unknown Source)
    at org.apache.http.impl.nio.reactor.SSLIOSession.doHandshake(SSLIOSession.java:180)
    ... 9 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.checkServerTrusted(Unknown Source)
    at com.sun.net.ssl.internal.ssl.JsseX509TrustManager.checkServerTrusted(Unknown Source)
    ... 16 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)
    ... 21 more
onCleanup()

[DownloadFile] Exception: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
Shutting down
Done

当前回答

Download the certificate from Nexus3 Browser (click on the lock-pad for View Site Information in case of Edge broser)
Click on Connection is secure
Click on the certificate details
Click on Copy To file (it opens up export certificate wizard)
Choose Base-64 encoding
Browse and select a download location and file-name (let’s say mycert)
Open cmd
Goto the download location and execute the below command
keytool -import -alias mycert -keystore  "<<your-JAVA_HOME-directory>>\jre\lib\security\cacerts" -file mycert.cer
Restart the machine
Execute maven build again.

其他回答

AVG版本18.1.3044 (Windows 10)干扰我的本地Spring应用程序。

解决方法:在AVG的“网页和邮件”部分输入,关闭“邮件保护”。 如果站点不安全,AVG会阻止证书。

我遵循的简单步骤。

问题:我试图连接到一个端点(https://%s.blob.core.windows.net)使用一个简单的java类(主要方法)。

我遇到了这个认证问题就像上面提到的。

解决方案:

使用浏览器(chrome)获取证书。为此,在浏览器中粘贴端点URL并输入。现在你会看到一个锁图标,点击它——>证书——>细节——>拷贝到文件——>下载它。 以admin的身份打开cmd(我使用的是windows),然后导航到你下载了.cer文件的目录。

3.(可选)如果你在同一台机器上使用多个JDK,那么修改你的JDK版本,使其与你在应用程序中使用的版本一致。

现在使用下面的命令

导入mycertificate -keystore "C:\程序 文件\Java\jdk-11.0.5\lib\security\cacerts" -file myurlcrt.cer

给出默认密码:changeit 相信这个证书:是的

这样就做完了。

谢谢!

这适用于任何你只需要安装JDK的操作系统:

从远程服务器下载证书: Keytool -printcert -rfc -sslserver <您的远程服务器主机名> > /tmp/䲟-cert.crt 将证书导入到JDK密钥存储库: Keytool -importcert -file /tmp/悔恨证书。> -storepass changeit -keystore "${JAVA_HOME}/lib/security/cacerts" -noprompt . crt -alias <远程服务器的别名

有很多方法可以解决这个问题…

一种方法是在keystore文件中设置TrustStore证书,并将其放在应用程序的路径中,并在main方法中设置这些系统属性:

public static void main(String[] args) {
  System.setProperty("javax.net.ssl.trustStore", "trust-store.jks");
  System.setProperty("javax.net.ssl.trustStorePassword", "TrustStore");
  ...
}

另一种方法是将密钥存储库作为资源文件放在项目jar文件中并加载它:

public static SSLContext createSSLContext(String resourcePath, String pass) throws NoSuchAlgorithmException, KeyStoreException, IOException, CertificateException, UnrecoverableKeyException, KeyManagementException {
  // initialise the keystore
  final char[] password = pass.toCharArray();
  KeyStore ks = KeyStore.getInstance("JKS");
  ks.load(ThisClass.class.getResourceAsStream(resourcePath
  ), password);

  // Setup the key manager factory.
  KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
  kmf.init(ks, password);

  // Setup the trust manager factory.
  TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
  tmf.init(ks);

  SSLContext sslc = SSLContext.getInstance("TLS");
  sslc.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
  return sslc;
}

public static void main(String[] args) {
  SSLContext.setDefault(
    createSSLContext("/trust-store.jks", "TrustStore"));
  ...
}

在windows中,您也可以尝试这个解决方案:https://stackoverflow.com/a/59056537/980442


我从证书颁发机构CA .crt文件中创建了keystore文件,如下所示:

keytool -import -alias ca -keystore trust-store.jks -storepass TrustStore -trustcacerts -file ca.crt

供参考:https://docs.oracle.com/javadb/10.8.3.0/adminguide/cadminsslclient.html

有这样的问题。

Tried a few solutions. But found that even if it's same project, when it's on other one's working place, it's totally fine. No extra settings needed. So we guessed it's an enviroment issue. We tried changing JDK version, IDE but didn't work. it took about 4 hours for investigation, until we tried the top-rated answer. I didn't find the error mentioned in that answer but I found via my browser about HTTP URL (lock) that there was a certification of Charles. Then I realized my charles was on all the time. As long as I turned that off, it's working all fine.

所以我留下了我的经验可能对你的案子有帮助。