Java到Active Directory LDAP Java.net.SocketException:连接或出站已关闭

晚上好,

到现在为止，我已经面对这个错误好几天了，尽管我在网上寻找解决方案，我还是可以修复这个错误

import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.BasicAttribute;
import javax.naming.directory.BasicAttributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;

public class LDAPtest {
public static void main(String[] args) {
    
    try {
        
        String keystorePath = "C:/Program Files/Java/jdk-13.0.2/lib/security/cacerts";
        System.setProperty("javax.net.ssl.keyStore", keystorePath);
         
        System.setProperty("javax.net.ssl.keyStorePassword", "changeit");
        
        Hashtable<String, String> ldapEnv = new Hashtable<>(); 
        ldapEnv.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
        ldapEnv.put(Context.PROVIDER_URL, "ldaps://localhost:10636");
        ldapEnv.put(Context.SECURITY_AUTHENTICATION,"simple");
        ldapEnv.put(Context.SECURITY_PRINCIPAL,"uid=admin,ou=system");
        ldapEnv.put(Context.SECURITY_CREDENTIALS,"secret");
        
        DirContext connection = new InitialDirContext(ldapEnv);
        System.out.println("Benvenuto " + connection);
        NamingEnumeration enm = connection.list("");

        while (enm.hasMore()) {
            System.out.println(enm.next());
        }

        enm.close();
        connection.close();
        
        
    }catch(Exception e) {
        e.printStackTrace();
    }
    
}

与

我使用Apache Directory Studio为LDAP服务器进行了设置，并在这里遵循本教程，以使LDAP正常工作：

所以我制作了证书，甚至安装了它，并用keytool将其导入到cacerts中。 我为所选端口（10636）启用了端口转发，但仍然出现以下异常：

javax.naming.CommunicationException: simple bind failed: localhost:10636 [Root exception is 
java.net.SocketException: Connection or outbound has closed]
at java.naming/com.sun.jndi.ldap.LdapClient.authenticate(LdapClient.java:219)
at java.naming/com.sun.jndi.ldap.LdapCtx.connect(LdapCtx.java:2795)
at java.naming/com.sun.jndi.ldap.LdapCtx.<init>(LdapCtx.java:320)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxFromUrl(LdapCtxFactory.java:225)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(LdapCtxFactory.java:189)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(LdapCtxFactory.java:243)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(LdapCtxFactory.java:154)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(LdapCtxFactory.java:84)
at java.naming/javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:730)
at java.naming/javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:305)
at java.naming/javax.naming.InitialContext.init(InitialContext.java:236)
at java.naming/javax.naming.InitialContext.<init>(InitialContext.java:208)
at java.naming/javax.naming.directory.InitialDirContext.<init>(InitialDirContext.java:130)
at Prova3.main(Prova3.java:31)
Caused by: java.net.SocketException: Connection or outbound has closed
at java.base/sun.security.ssl.SSLSocketImpl$AppOutputStream.write(SSLSocketImpl.java:1246)
at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81)
at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142)
at java.naming/com.sun.jndi.ldap.Connection.writeRequest(Connection.java:398)
at java.naming/com.sun.jndi.ldap.Connection.writeRequest(Connection.java:371)
at java.naming/com.sun.jndi.ldap.LdapClient.ldapBind(LdapClient.java:359)
at java.naming/com.sun.jndi.ldap.LdapClient.authenticate(LdapClient.java:214)
... 13 more

javax.naming.CommunicationException:简单绑定失败：localhost:10636[根异常为
java.net.SocketException:连接或出站已关闭]
位于java.naming/com.sun.jndi.ldap.LdapClient.authenticate（LdapClient.java:219）
位于java.naming/com.sun.jndi.ldap.LdapCtx.connect（LdapCtx.java:2795）
位于java.naming/com.sun.jndi.ldap.LdapCtx.（LdapCtx.java:320）
位于java.naming/com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxFromUrl（LdapCtxFactory.java:225）
位于java.naming/com.sun.jndi.ldap.LdapCtxFactory.getUsingURL（LdapCtxFactory.java:189）
位于java.naming/com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs（LdapCtxFactory.java:243）
位于java.naming/com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance（LdapCtxFactory.java:154）
位于java.naming/com.sun.jndi.ldap.LdapCtxFactory.getInitialContext（LdapCtxFactory.java:84）
位于java.naming/javax.naming.spi.NamingManager.getInitialContext（NamingManager.java:730）
位于java.naming/javax.naming.InitialContext.getDefaultInitCtx（InitialContext.java:305）
位于java.naming/javax.naming.InitialContext.init（InitialContext.java:236）
位于java.naming/javax.naming.InitialContext。（InitialContext.java:208）
位于java.naming/javax.naming.directory.InitialDirContext。（InitialDirContext.java:130）
位于Prova3.main（Prova3.java:31）
原因：java.net.SocketException:连接或出站已关闭
位于java.base/sun.security.ssl.SSLSocketImpl$AppOutputStream.write（SSLSocketImpl.java:1246）
位于java.base/java.io.BufferedOutputStream.flushBuffer（BufferedOutputStream.java:81）
位于java.base/java.io.BufferedOutputStream.flush（BufferedOutputStream.java:142）
位于java.naming/com.sun.jndi.ldap.Connection.writeRequest（Connection.java:398）
位于java.naming/com.sun.jndi.ldap.Connection.writeRequest（Connection.java:371）
位于java.naming/com.sun.jndi.ldap.LdapClient.ldapBind（LdapClient.java:359）
位于java.naming/com.sun.jndi.ldap.LdapClient.authenticate（LdapClient.java:214）
... 还有13个

提前感谢谷歌用户

：

简单绑定失败

错误几乎总是与SSL连接相关

使用

nc

或

telnet

，检查客户端与远程主机和端口之间是否可以建立连接

使用

SSLPoke.java

（一个检查SSL连接的简单java类），检查证书是否正确导入和使用，同时检查TLS版本是否正确。使用类似于

java-Dhttps.protocols=TLSv1、TLSv1.1、TLSv1.2-Djavax.net.debug=all-SSLPoke google.com 443>log.txt 2>&1的代码

寻找：


警告：找不到合适的证书-在没有客户端身份验证的情况下继续
=检查是否已设置
javax.net.ssl.trustStore
致命（握手失败）：无法启动握手
=可能是不匹配的TLS版本
还要检查您的中间CA是否已过期
我在JDK8中也有同样的问题。这似乎不是如中所回答的JDK版本问题
ldapEnv.put(Context.PROVIDER_URL, "ldap://localhost:10389");

javax.naming.CommunicationException: simple bind failed: localhost:10636 [Root exception is 
java.net.SocketException: Connection or outbound has closed]
at java.naming/com.sun.jndi.ldap.LdapClient.authenticate(LdapClient.java:219)
at java.naming/com.sun.jndi.ldap.LdapCtx.connect(LdapCtx.java:2795)
at java.naming/com.sun.jndi.ldap.LdapCtx.<init>(LdapCtx.java:320)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxFromUrl(LdapCtxFactory.java:225)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(LdapCtxFactory.java:189)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(LdapCtxFactory.java:243)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(LdapCtxFactory.java:154)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(LdapCtxFactory.java:84)
at java.naming/javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:730)
at java.naming/javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:305)
at java.naming/javax.naming.InitialContext.init(InitialContext.java:236)
at java.naming/javax.naming.InitialContext.<init>(InitialContext.java:208)
at java.naming/javax.naming.directory.InitialDirContext.<init>(InitialDirContext.java:130)
at Prova3.main(Prova3.java:31)
Caused by: java.net.SocketException: Connection or outbound has closed
at java.base/sun.security.ssl.SSLSocketImpl$AppOutputStream.write(SSLSocketImpl.java:1246)
at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81)
at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142)
at java.naming/com.sun.jndi.ldap.Connection.writeRequest(Connection.java:398)
at java.naming/com.sun.jndi.ldap.Connection.writeRequest(Connection.java:371)
at java.naming/com.sun.jndi.ldap.LdapClient.ldapBind(LdapClient.java:359)
at java.naming/com.sun.jndi.ldap.LdapClient.authenticate(LdapClient.java:214)
... 13 more